$(document).ready(function() { var obj = document.createElement("audio"); obj.src="/uploads/vft/gulf_watch/audio/fetcheduphardaground.mp3"; obj.volume=0.10; obj.autoPlay=false; obj.preLoad=true; $(".playSound").click(function() { obj.play(); }); });     animatedcollapse.addDiv('A', 'fade=1') animatedcollapse.ontoggle=function($, divobj, state){ //fires each time a DIV is expanded/contracted //$: Access to jQuery //divobj: DOM reference to DIV being expanded/ collapsed. Use "divobj.id" to get its ID //state: "block" or "none", depending on state } animatedcollapse.init() animatedcollapse.addDiv('B', 'fade=1') animatedcollapse.ontoggle=function($, divobj, state){ //fires each time a DIV is expanded/contracted //$: Access to jQuery //divobj: DOM reference to DIV being expanded/ collapsed. Use "divobj.id" to get its ID //state: "block" or "none", depending on state } animatedcollapse.init()         On March 24, 1989, an oil tanker leaving the port of Valdez, Alaska hit a shallow reef and spilled 11 million gallons of oil into the sea. This spill spread southwest, covering nearly 1,300 miles of coastline in thick, sticky oil. Oil was even found washed up near the village of Chignik, 470 miles away from the spill site. It is estimated that 250,000 seabirds, 2,800 sea otters, 300 harbor seals, 250 bald eagles, up to 22 orcas, and billions of salmon and herring eggs were lost in the spill. It is difficult to know how many intertidal plants and animals, such as barnacles, sea stars, and hermit crabs, were also impacted. The Gulf of Alaska is part of the North Pacific Ocean. It stretches from the Alaska Peninsula in the west to the islands of Alaska’s southeast. The coast includes mountains, glaciers, forests, towns, and cities. The waters are full of life and support one of the country’s largest fishing industries. Powerful currents circulate marine life and bring up nutrients from deep waters. Seabirds and marine mammals feed in the many bays and estuaries of the gulf. These areas also provide nursery habitats for fish. So many factors influence the Gulf of Alaska! The major factors include: Precipitation in the form of snow and rain Freshwater runoff from rivers, glaciers, and melting snow The upwelling & downwelling of water carrying nutrients that get mixed by the tides and currents Click the image below for a closer look at some of these factors. Be sure to use the vocabulary list at the right if you run into any terms you are not familiar with! Thousands of workers, volunteers, and community members worked together to clean up the spill. However, oil still remains hidden below the sand and rocks on the beaches and scientists want to know what this means for the Gulf of Alaska ecosystem. Since 1989, scientists have continued to study how the Gulf of Alaska's ecosystem is responding to the Exxon Valdez oil spill (EVOS). All of Earth’s ecosystems are affected by both natural changes and human activities. After the 1989 spill, scientists realized something important. We did not have enough data to fully understand how complex the northern Gulf of Alaska ecosystem really is. We were lacking what researchers call “baseline” data. A baseline is a measure of how things are (or were) at a particular time. Without baseline data, it is hard to understand how ecosystems respond to changes in environmental conditions, which can occur naturally or as a result of human activities. Think of a baseline like this: If you measure your heartbeat when you are resting, it’s beating regularly and probably pretty slowly. This is your baseline to measure from. If you suddenly run up a long flight of steps, your heart starts beating much faster and you are probably out of breath. If you count your heartbeat now, you can measure how much it changed from the baseline. That change is the impact caused by running up the steps. For example, in the Gulf of Alaska it is difficult to know exactly how the 1989 oil spill changed sea otter population numbers. This is hard to measure because baseline data for the number of sea otters living there before the spill doesn't exist. In order to improve our understanding of baselines and change for the entire Gulf of Alaska ecosystem, the Exxon Valdez Oil Spill Trustee Council created and continues to fund the work of the Gulf Watch Alaska long-term monitoring program. Gulf Watch Alaska is a team of scientists and researchers who work together to measure and monitor different parts of the ecosystem in the spill area. They compare their data to get a “bigger picture” about how the ecosystem works and how healthy it is. VIDEO: Introduction to Gulf Watch Alaska Introduction to the Gulf Watch Alaska ecosystem monitoring program. (1:14) Video Transcript On March 24, 1989, the oil tanker Exxon Valdez ran aground in Alaska’s Prince William Sound, spilling more than 10 million gallons of crude oil into the Gulf of Alaska. Today, more than 26 years after the accident, scientists are still trying to understand the full impacts of the spill on the waters and wildlife of the Gulf. To that end, Gulf Watch Alaska has brought together twelve different organizations and over 40 scientists to study all aspects of the Gulf of Alaska and its state of recovery from the spill. Monitoring the lasting effects of the oil spill is no small task. Like a large puzzle, the Gulf of Alaska is a complex system made up of ever smaller components. The four main components being studied by Gulf Watch Alaska are the driving environmental forces of the Gulf, the pelagic ecosystem of its waters, the nearshore ecosystems of its coast, and the lingering oil that still remains from the Exxon Valdez spill. By closely monitoring these components simultaneously, the scientists of Gulf Watch Alaska hope to better understand the whole picture of the Gulf of Alaska and its continuing recovery from the spill.   The Gulf Watch Alaska monitoring program is organized into four related ecosystem monitoring components. Click below to discover each component.       Who is watching the Gulf?   Baseline data (n): a measure of normal or how things usually are before change   Carbon pump (n): the ocean's biologically-driven transfer of carbon from the atmosphere to the deep sea   Detritus (n): waste or debris of any kind, but especially organic matter produced by the decomposition of organisms   Downwelling/Upwelling (n): the downward (or upward) movement of fluid, especially in the sea   Ecosystem (n): a community of living things and its nonliving surroundings linked together by energy and nutrient exchange   Eddy (n): a circular movement of water counter to a main current   Estuary (n): where the salty ocean tide meets freshwater from the land at the mouth of a river, stream, creek, or the toe of a glacier   EVOS (n): Exxon Valdez oil spill   Exxon Valdez Oil Spill Trustee Council (n): organization formed after EVOS to oversee the restoration of the injured ecosystem   Habitat (n): a place that provides an animal or plant with adequate food, water, shelter, and living space to feed, breed, seek shelter, and raise young   Impact (n): a powerful or major influence or effect   Lunar forcing (n): the effect that the gravitational pull of the moon has upon the oceans, creating the tide cycles   Monitor (v): to observe and check the progress or quality of (something) over a period of time; keep under systematic review   Photic boundary (n): the depth of the ocean that indicates the division between the photic (or sunlight) zone and the aphotic zone where photosynthesis becomes impossible  

  animatedcollapse.addDiv('A', 'fade=1') animatedcollapse.ontoggle=function($, divobj, state){ //fires each time a DIV is expanded/contracted //$: Access to jQuery //divobj: DOM reference to DIV being expanded/ collapsed. Use "divobj.id" to get its ID //state: "block" or "none", depending on state } animatedcollapse.init() animatedcollapse.addDiv('B', 'fade=1') animatedcollapse.ontoggle=function($, divobj, state){ //fires each time a DIV is expanded/contracted //$: Access to jQuery //divobj: DOM reference to DIV being expanded/ collapsed. Use "divobj.id" to get its ID //state: "block" or "none", depending on state } animatedcollapse.init()         Thousands of individual animals died as a result the Exxon Valdez oil spill. Some died soon after contact with the oil. Others died more slowly as a result of the toxins. It is difficult to measure how animal populations continue to be affected by contact with oil after the cleanup. The long-term harm from chronic exposure to the chemicals in oil remains a problem in some areas, especially where oil can still be found under rocks. Since 1990, scientists have been gathering data about locations where oil continues to linger, as well as the movement of toxic chemicals throughout the Prince William Sound ecosystem. The Lingering Oil project is studying the recovery of harlequin duck and northern sea otter populations in Prince William Sound because there are long-term health concerns for both of these populations. The Gulf Watch Alaska team is collecting data by taking samples in both oiled and non-oiled sites in Prince William Sound. Click on the images below to learn more about these two species. Scientists use a variety of skills to capture ducks and otters in order to collect tissue samples. These methods are designed to safely capture the animals and then release them unharmed. According to Dr. Esler, “It might not be the greatest day for the animals, [but] their long-term survival is not compromised.” To capture harlequin ducks, the team uses a floating mist net. This net sits above the water like an invisible wall. As the ducks come in for a landing, they are trapped in the net. Researchers can then safely remove the ducks and take them to the veterinarian for sampling. Capturing sea otters is a bit more challenging. These cute and fuzzy creatures are, in fact, the largest member of the weasel family (the Mustelids). This is a group of animals who are not known for their sweet and cuddly personalities. Think of a sea otter as a floating badger or wolverine! Watch the video below to see divers use a Wilson Trap to safely capture and handle sea otters for sampling. VIDEO: Capturing Sea Otters United States Geological Survey (USGS) video showing how divers use Wilson traps to capture sea otters in the wild. (3:53) Video Transcript (This video contains music and some ambient sounds but no dialogue.) Watch the video below to learn more about the scientists' field work as they monitor the effects of lingering oil in Prince William Sound. VIDEO: Lingering Oil Dan Esler describes how scientists are studying the effects of lingering oil on harlequin ducks and sea otters. (1:48) Video Transcript The lingering oil studies occur in western Prince William Sound, which is where the oil from the Exxon Valdez oil spill landed, and actually there’s still some oil out there today – small pockets of oil that’s buried in sediments on beaches, throughout western Prince William Sound. So that’s where the lingering oil issues are still important to track. From the USGS perspective, we’re looking at effects of that lingering oil on wildlife. So considering effects of exposure to that lingering oil, and also to understand what that might mean to individuals and populations of the wildlife that live out there. The main species that we’re thinking about in terms of lingering oil are harlequin ducks and sea otters, and that’s because there’s a long history of understanding that lingering oil’s been an important constraint on population recovery of those two species, and so we’ve spent a lot of time trying to understand the timeline and the mechanisms by which those species are recovering from the oil spill. We’ve measured exposure in a number of different ways. For example, with harlequin ducks we’ve used an enzyme called cytochrome P450 1A. It’s a long word basically for an enzyme that gets induced when any vertebrate’s exposed to hydrocarbons. So if you and I were exposed to oil, we would have an induction of that enzyme that would be measurable and then could tell us whether one has been exposed to that. The enzyme itself is part of a cascade of physiological processes that any vertebrate goes through once they’ve been exposed to oil. And it could be indicative of physiological harm, or it could be indicative of just exposure without physiological harm. So we’re not inferring harm from induction of the enzyme, what we’re inferring is that they’re still exposed to oil with the potential for harm.         Who is watching the Gulf?   Concentration (n): the amount of something in a specific place or given volume   Recovery (n): a return to a normal state of health   Tissue sampling (n): various procedures to obtain bodily fluids, muscle, skin, fur or feathers for testing  

animatedcollapse.addDiv('A', 'fade=1') animatedcollapse.ontoggle=function($, divobj, state){ //fires each time a DIV is expanded/contracted //$: Access to jQuery //divobj: DOM reference to DIV being expanded/ collapsed. Use "divobj.id" to get its ID //state: "block" or "none", depending on state } animatedcollapse.init() animatedcollapse.addDiv('B', 'fade=1') animatedcollapse.ontoggle=function($, divobj, state){ //fires each time a DIV is expanded/contracted //$: Access to jQuery //divobj: DOM reference to DIV being expanded/ collapsed. Use "divobj.id" to get its ID //state: "block" or "none", depending on state } animatedcollapse.init()           Nearshore and benthic (bottom-dwelling) organisms are good gauges of change in the environment. Many are sedentary, sensitive to change, and easy to access for study. Scientists are usually more able to discover the source of change in this kind of habitat. Once those sources are found, they can identify and compare changes that are natural from those that are man-made. Click the image below to discover the different zones of the nearshore ecosystem. The Nearshore Ecosystems team collects data in the tidal areas. Researchers are focused on learning about the variety and abundance of the species living at sites in Prince William Sound, the outer Kenai Peninsula, and Lower Cook Inlet. This data will help scientists find answers for questions like: • Is the nearshore environment changing significantly from year to year? • Have resources in this environment recovered from the 1989 oil spill? If not, are there reasons other than the oil spill? • Are changes in offshore conditions also causing changes in the nearshore habitats? This project focuses on organisms that are considered crucial to the nearshore ecosystem’s health. One such key species is the black oystercatcher. These shorebirds are good candidates for monitoring projects because they have a long lifespan. Over that lifetime, the oystercatcher lives in and depends upon intertidal habitats. This is where they mate, nest, and raise their young. Even though black oystercatchers aren’t benthic animals, they eat a diet of creatures that are. Their menu of mussels, limpets, and chitons are easily effected by changes in the environment. If oystercatchers aren’t healthy, it probably means that something significant has happened to the shellfish that they eat. Click on the image below to learn more about the black oystercatcher, a critical species of the Nearshore Benthic Systems in the Gulf of Alaska project. Click the audio icon to hear the call of the black oystercatcher. Scientists, like the National Park Service’s Heather Coletti, are trying to address the following questions: • Are the numbers of black oystercatcher nests changing from year to year? • Is the number of eggs or chicks in each nest changing? • Are chicks supplied with the same variety and amount of food each year? • Does this data change from one location to another? Heather and her team monitor the habitat of black oystercatchers using a variety of methods, including the use of shoreline transects to survey nest sites and sample prey remains at oystercatcher nesting sites. VIDEO: Monitoring Nearshore Systems Heather Coletti describes her work studying black oystercatchers for the nearshore systems component of Gulf Watch Alaska. (1:50) Video Transcript The nearshore is that interface between the terrestrial system – land – and the oceans. And there are several influences from the ocean that meet at the nearshore and then we have anthropogenic and natural influences from the terrestrial, and in some heavily populated areas that’s pollution and runoff, and how the nearshore really is affected by all those influences. And it’s essentially where the densest human populations live, along the coasts. Our program is essentially monitoring the nearshore food web. So we start out at the sea grasses and algae, which are the primary producers of that system. And then we look at invertebrates – benthic invertebrates – whether it’s mussels, clams, limpets… And then we have surveys for higher trophic level predators, like your sea ducks, sea otters, sea stars. We monitor oystercatchers, which are a pretty charismatic shorebird that is essentially confined to the nearshore and the intertidal. They feed exclusively in the intertidal on benthic invertebrates. So that’s your mussels, your limpets, that’s their two primary food sources, but they’ll eat some barnacles and some worms. So we have several aspects of their biology that we are monitoring. The goal of any monitoring program is to look at change over time and understand change over time, what’s driving it and if there’s any way to predict what those outcomes may be. That’s ultimately the goal and we are in our first few years of monitoring, and right now looking at what the natural variation in these systems is like. That hasn’t been fully documented yet.       Who is watching the Gulf?   Abundance (n): the quantity or amount of something   Benthic (adj): pertaining to the seafloor and the organisms that live there   Data (n): values for something measured   Density (n): the number of inhabitants per unit of area   Distribution (n): the way in which something is spread over an area   Intertidal (n): the benthic shore area between the extreme reaches of high and low tides   Nearshore (n): the marine zone that extends from the high tide line to depths of about 20 meters   Organism (n): an individual life form   Prey (n): an animal taken by predators as food   Riparian zone (n): the area of land next to a lake, river, stream, or wetland   Subtidal (n): the benthic area below low tide that is covered by water most of the time and exposed briefly during extreme low tides   Tide (n): the alternate rising and falling of the sea at a particular place, due to the gravitional attraction of the moon and sun   Transect (n): a path along which scientists count animal populations and plant distributions    

animatedcollapse.addDiv('A', 'fade=1') animatedcollapse.ontoggle=function($, divobj, state){ //fires each time a DIV is expanded/contracted //$: Access to jQuery //divobj: DOM reference to DIV being expanded/ collapsed. Use "divobj.id" to get its ID //state: "block" or "none", depending on state } animatedcollapse.init() animatedcollapse.addDiv('B', 'fade=1') animatedcollapse.ontoggle=function($, divobj, state){ //fires each time a DIV is expanded/contracted //$: Access to jQuery //divobj: DOM reference to DIV being expanded/ collapsed. Use "divobj.id" to get its ID //state: "block" or "none", depending on state } animatedcollapse.init() animatedcollapse.addDiv('C', 'fade=1') animatedcollapse.ontoggle=function($, divobj, state){ //fires each time a DIV is expanded/contracted //$: Access to jQuery //divobj: DOM reference to DIV being expanded/ collapsed. Use "divobj.id" to get its ID //state: "block" or "none", depending on state } animatedcollapse.init()         Pelagic animals live in the open seas, away from the coast or seafloor. The Pelagic Ecosystem team has the task of studying these predator and prey species in Prince William Sound. Despite the challenge, scientists have already managed to collect decades of data that focus on the interactions between whales, seabirds and their prey. This information is useful in answering questions such as: • What are the population trends of key open-ocean predators, such as orcas, tufted puffins, and humpback whales? • Are the numbers of forage fish, like herring, sand lance, and capelin, going up or down? • Is it possible to monitor forage fish population trends? • If it is possible to monitor them, what is the best way to do so? Forage fish have a big impact on marine ecosystems. They convert a huge amount of energy from lower trophic levels and this energy is transferred into food for larger fish, marine mammals, and seabirds. Forage fish have great numbers of offspring and short lifespans. These traits can cause major changes in their abundance from year to year. If the abundance of forage fish increases or decreases significantly, the predators that eat them will also experience shifts in their population numbers. Humpback whales are predators of herring. Many humpback whales migrate from Prince William Sound to Hawaii for the winter. Some humpback whales, however, stay in or near the Sound. During the winter, there is not much plankton for humpbacks to feed on, and fish like herring become a good alternative source of food for these whales. Watch the video below to see how the predators of the pelagic hunt their herring prey. VIDEO: Bait Ball Feast - BBC One In late summer, the plankton bloom is at its height and vast shoals of herring gather to feed on it. Diving birds round the fish up into a bait ball and then a humpback whale roars in to scoop up the entire ball of herring in one huge mouthful. From "Nature's Great Events: The Great Feast" by BBC. (1:14) Video Transcript The murres only attack from beneath, trapping the fish against the surface. But they push the herring within range of the gulls. It’s a feeding frenzy. The table is set for the mightiest predator of them all: the humpbacks have reached their feeding grounds. Scientists want to know the best way to estimate the numbers of specific fish species, such as herring. They get the data they need using a combination of aerial surveys, hydroacoustics, and various fish-capture techniques. Check out the video below to hear Mayumi Arimitsu explain some of these techniques. VIDEO: Forage Fish Studies Mayumi Arimitsu describes the methods scientists use to monitor forage fish populations. (0:55) Video Transcript We have observers in a plane that are looking at schools of fish in the ocean very close to the shoreline. We do a couple of things. One is use hydroacoustics from the boat, and with basically a scientific fish finder we’re able to quantify the biomass and density and depth distribution of these different forage fish. We also are trying to validate the aerial survey observations so we have a team in a skiff that are communicating with the pilot in the plane, and they are trying to catch what the observers in the plane are seeing. Scientists working on the humpback whale monitoring project are trying to understand if the whales are having an impact on the recovery of herring populations in Prince William Sound. An important part of this project is maintaining an up-to-date humpback “fluke identification catalog,” a kind of “Who’s Who?” in the Gulf of Alaska whale world. Watch the video below to learn about how scientists observe and photograph whales included in the fluke identification catalog. VIDEO: Tracking Humpback Whales John Moran describes how scientists are studying the importance of humpback whales in the Gulf of Alaska ecosystem. (2:08) Video Transcript (Narrator) These small silver fish are Pacific herring, one of the many species being monitored by Gulf Watch Alaska. Scientists are monitoring their population for signs of recovery after the Exxon Valdez oil spill. They are also interested in other potential factors that could be affecting their recovery. One of these potential factors may be humpback whales. (John Moran) We want to know if humpback whales are having an impact on the recovering herring population in Prince William Sound. Basically we want to know how many herring are whales eating, and is that important. So the first thing we need to do is figure out how many whales are there, so we use Photo ID. All the whales have unique patterns on their flukes. When the whale dives it shows the underside of its fluke, and we’ll take a picture of that and that can identify the individual whale. So basically we get on the boat and we go look for whales. That the base of our research is getting the fluke IDs. And from that you can get a lot more information out of it. We need to figure out what they’re eating, so we use the echo sounder on the boat, we’ll use nets and jigs, so we’ll see whatever prey is around the whale and try to catch that. Or if there’s any scales that slip out of their mouth, or any kind of sign of things on the surface, or fish jumping out of the whale’s mouth, we’ll try to document that. And we also use biopsies. We have a cross bow or a rifle that takes a little blubber plug out of the whale. So we approach the whale and get a little sample, and from that we can use stable isotopes or fatty acids to get at what the diet’s been from that whale. Humpbacks are kind of new players on the scene, they’re population was really low. In the late sixties & early seventies, there may have been 1,500-2,000 humpbacks in the North Pacific. And then there was this survey called the SPLASH survey that took place in 2006 that put the population at over 20,000. So that’s a huge increase. It impacts managers. If you’re managing a herring fishery and you have these humpbacks population weren’t really there 20, 30, 40 years ago, you’ve got to account for these new predators, how many herring are they taking, it’s all important to know if you’re trying to manage a fishery. We haven’t had them there, so how they impact the ecosystem is going to be new to us.       Who is watching the Gulf?   Biomass (n): the amount of living matter in a given habitat (i.e. the weight of organisms per unit area, or the volume of organisms per unit of habitat)   Forage fish (n): small schooling fishes that feed on plankton and are eaten by larger predators   Hydroacoustics (n): the study of sound in water   Pelagic (adj): the open sea, away from the coast or seafloor   Trophic level (n): the position of an organism or species in a food web or food chain    

          WELCOME, TEACHERS! The Alaska SeaLife Center and Gulf Watch Alaska are excited to present this virtual field trip (VFT). Join the Gulf Watch Alaska team of scientists as they investigate the long term effects of the Exxon Valdez oil spill on the ecosystems of the Gulf of Alaska. Learn about the work of a collaborative team of scientists from many different ocean science disciplines, who represent over 15 different government agencies, non-profit research institutions, and universities. GRADE LEVEL: 6-8th TIME NEEDED: Between one and four 1-hour class periods (teachers may choose to use all or only some of the supplementary lessons). NUTSHELL: Students will learn about the long-term monitoring projects that have been studying the effects of the 1989 Exxon Valdez oil spill in Prince William Sound and the northern Gulf of Alaska. They will explore the various projects and how, collectively, they can inform us about the overall ecosystem. LEARNING OBJECTIVES: After completing this virtual field trip, students will be able to: • Explain how the long-term monitoring project called Gulf Watch Alaska was founded and what its overall goals are. • Understand the collaborative nature of science and how researchers from various disciplines working together can provide a ‘big picture’ view of a massive project. • Explain the various levels of a biome and how all components of an ecosystem depend upon each other for a healthy environment. BACKGROUND: In this virtual field trip, students will meet various scientists and researchers working for the Gulf Watch Alaska long-term ecosystem monitoring program, a project of the Exxon Valdez Oil Spill Trustee Council, encompassing the marine ecosystems affected by the 1989 oil spill. This program is organized into four related ecosystem monitoring components, with data management, modeling, and synthesis components providing overall integration across the program. This VFT can be used in a number of ways. Individuals may navigate through the pages on their own and meet the scientists through the links provided on the right-hand bar. Self-guided exploration can be completed in a couple of hours. Alternatively, teachers may facilitate a structured experience, working through each page of the VFT together in a class. Lesson plans (links included on the right-hand column of this page) are available to supplement online content. TO USE THIS VIRTUAL FIELD TRIP YOU WILL NEED: • Internet access, video-streaming capabilities • Projection system (with audio) to display content or a computer lab (with headphones) • Corresponding lesson plans (linked as PDFs in the right hand column of this page) UNABLE TO RUN THE STREAMING VERSION? REQUEST A FREE COPY OF ALL MATERIALS ON CD BY EMAILING education@alaskasealife.org. ADDITIONAL RESOURCES: • Gulf Watch Alaska • Alaska Ocean Observing System • Nearshore Ecosystem Projects • Ecological Trends in Kachemak Bay • Nearshore Benthic Systems in the Gulf of Alaska • National Park Service SWAN Nearshore Monitoring • Environmental Drivers Projects • Continuous Plankton Recorder • Gulf of Alaska Mooring (GAK1) Monitoring • Oceanographic Conditions in Lower Cook Inlet and Kachemak Bay • Oceanographic Conditions in Prince William Sound • The Seward Line: Marine Ecosystem Monitoring in the Northern Gulf of Alaska • Lingering Oil Projects • Weathering and Tracking • Harlequin ducks and sea otters • EVOS Status of Injured Resources and Services • Pelagic Ecosystem • Detection of Seabird Populations • Fall and Winter Seabird Abundance • Forage Fish • Humpback Whales • Killer Whales • Prince William Sound Marine Bird Population Trends   Contact Us: If you have any questions about this virtual field trip, please contact the Alaska SeaLife Center Education Department at education@alaskasealife.org or 907-224-6306. For more information on classes we offer, including our inquiry-based 50-minute Distance Learning programs, visit our website at www.alaskasealife.org.         CURRICULUM SUPPLEMENTS Use the .pdf links below to access classroom activities for each section of the Gulf Watch Alaska virtual field trip experience. Lesson 1 Nearshore.pdf Lesson 2 Drivers.pdf Lesson 3 Lingering_Oil.pdf Lesson 4 Pelagic.pdf Gulf Watch Whale Fluke ID.pdf Who's that Whale? slideshow          

animatedcollapse.addDiv('1', 'fade=1') animatedcollapse.ontoggle=function($, divobj, state){ //fires each time a DIV is expanded/contracted //$: Access to jQuery //divobj: DOM reference to DIV being expanded/ collapsed. Use "divobj.id" to get its ID //state: "block" or "none", depending on state } animatedcollapse.init() animatedcollapse.addDiv('2', 'fade=1') animatedcollapse.ontoggle=function($, divobj, state){ //fires each time a DIV is expanded/contracted //$: Access to jQuery //divobj: DOM reference to DIV being expanded/ collapsed. Use "divobj.id" to get its ID //state: "block" or "none", depending on state } animatedcollapse.init() Who is watching walrus? CONTINENTAL SHELF - the area of shallow ocean water around the edge of a continent before the seabed slopes down into the deep ocean HAUL OUT (v) - to leave the water and rest on land, rocks, or floating ice HAULOUT (n) - a place where marine mammals leave the water to rest STAMPEDE - a sudden rush of many individuals, usually in a panic DISTURBANCE - when an animal or group of animals changes its behavior as a result an event           In the cold northern ocean between Alaska and Russia, freezing weather is possible during any month of the year. Throughout the long winter, temperatures in the Arctic are so cold that the surface of the ocean freezes for millions of square miles! Remarkably, animals like the Pacific walrus are adapted to live in this chilly climate, and they use sea ice as part of their habitat. In recent summers, scientists and local residents have noticed less sea ice than normal in the Arctic. In September 2009, sea ice in the Chukchi Sea melted past the edge of the continental shelf. As a result, 3,500 walruses who usually rest in small groups on floating sea ice were forced to haul out together on land at Icy Cape. Something startled the walrus while they were resting there. When startled, walrus will leave their haulout and rush into the water. As the huge group of walrus at Icy Cape rushed to the water, younger and smaller animals were trampled. Alaska SeaLife Center scientists and veterinarians were on the team that was sent to Icy Cape after the stampede. They found more than 130 young walrus dead on the beach. This dramatic scene sparked their interest in studying walrus. Land-based haulouts in the Chukchi Sea were first seen in the United States less than ten years ago. A walrus's choice to haul out on land is directly linked to the availablity of sea ice. If ice is available within their range, they will haul out on it. If ice is not available, they will haul out on land. Scientists fear that, if we continue to have summers with less-than-normal sea ice, events like the stampede at Icy Cape will become more common. Scientists at the Alaska SeaLife Center want to understand how walrus use these new land haulouts. They also want to learn how walrus will respond to disturbances while they are on land. The challenge is that walrus live in isolated, wild areas spread across a huge region. To study walrus, scientists must find a way to observe them closely without causing any disturbance events themselves. How will the scientists do it? Join our team as they come up with a plan. To get started, let's learn more about the Icy Cape stampede by checking out the videos and news release below. You'll be amazed how crowded the walrus haulouts can get! VIDEO: Icy Cape Stampede 2009 When large numbers of walrus haul out together on land, a disturbance event can mean disaster. This video, including images from the 2009 Icy Cape stampede, examines what can happen when walrus haul out on land in large groups. (1 minute) Video Transcript Over the past few decades, sea ice in the Arctic has been shrinking at increasing rates. When the ice recedes past the continental shelf, walrus females and calves are forced to leave the ice and haul out on shore to stay near their feeding grounds. As you can see in this video taken near Point Lay in 2011, conditions on shore can get very crowded. If the walruses are disturbed, they may rush to the water in a massive stampede. In September 2009 scientists observed thousands of walruses hauling out together on land near Icy Cape on the shore of the Chukchi Sea. When researchers surveyed the area a few days later, they found over 130 walruses dead on the beach. Veterinarians and scientists from the Alaska SeaLife Center and other organizations investigated the event and determined that most of the fatalities were young animals that had died as a result of a stampede. Though the cause of this disturbance at Icy Cape is unknown, the number of fatalities can be attributed to the crowded conditions at the haul out.   Click here for more information on walrus haulout events in Alaska's North Slope Borough, including the 2009 Icy Cape event.   Now that we've observed the same event that sparked the interest of our Alaska SeaLife Center marine mammal research team, let's learn more about Pacific walrus and what they need to survive.      

animatedcollapse.addDiv('1', 'fade=1') animatedcollapse.ontoggle=function($, divobj, state){ //fires each time a DIV is expanded/contracted //$: Access to jQuery //divobj: DOM reference to DIV being expanded/ collapsed. Use "divobj.id" to get its ID //state: "block" or "none", depending on state } animatedcollapse.init() animatedcollapse.addDiv('2', 'fade=1') animatedcollapse.ontoggle=function($, divobj, state){ //fires each time a DIV is expanded/contracted //$: Access to jQuery //divobj: DOM reference to DIV being expanded/ collapsed. Use "divobj.id" to get its ID //state: "block" or "none", depending on state } animatedcollapse.init() animatedcollapse.addDiv('3', 'fade=1') animatedcollapse.ontoggle=function($, divobj, state){ //fires each time a DIV is expanded/contracted //$: Access to jQuery //divobj: DOM reference to DIV being expanded/ collapsed. Use "divobj.id" to get its ID //state: "block" or "none", depending on state } animatedcollapse.init() animatedcollapse.addDiv('4', 'fade=1') animatedcollapse.ontoggle=function($, divobj, state){ //fires each time a DIV is expanded/contracted //$: Access to jQuery //divobj: DOM reference to DIV being expanded/ collapsed. Use "divobj.id" to get its ID //state: "block" or "none", depending on state } animatedcollapse.init() Who is watching walrus? BASELINE (n) - Information about what is "normal" or expected. This kind of information helps researchers measure change. DATA (n) - factual information             Action! Dr. Polasek decided that, because her research questions were complex, they would take many years to answer. Her first goals were to establish a baseline and test out their monitoring method. To accomplish these goals, in the first year of the project the team would only set up cameras at sites in Bristol Bay. Haulouts in Bristol Bay are "established". This means that walrus are known to haul out there every summer. The animals in Bristol Bay are males. Although male walrus do not depend on summer sea ice, their behavior at haulouts will give researchers the baseline they need to make comparisons with females and calves in the north. As Dr. Polasek explained in her research hypotheses, she hopes to find out whether walrus at new haulouts in the Chukchi Sea will react differently to disturbances than walrus at established haulouts in the southern parts of the Bering Sea. Installation took the research team on remote adventures as they installed cameras at five sites in Bristol Bay: Round Island (West Main) Round Island (First Beach) Cape Peirce Hagemeister Island Cape Seniavin The two videos below highlight the experiences of our scientists as they set up cameras for the 2011 summer season. VIDEO: Round Island Join our researchers as they head out to Round Island to place the first set of cameras. (3 minutes) Video Transcript How did you travel to Round Island? There was a lot of planning necessary before we could travel to Round Island. Round Island is very remote, and we had to make sure that we had all the equipment and materials that we would need to set up the cameras. If we forgot something, we wouldn’t be able to run back and get it. For our travel out there we had to schedule multiple flights and work with partners and other scientists to make travel plans. Once all the planning was done, we drove from Seward to Anchorage and then got on a small plane and flew from Anchorage to Togiak. We flew on the same plane that delivers groceries for the store. The town of Togiak is located at the head of Togiak Bay, which leads out into Bristol Bay. It lies in the Togiak Wildlife Refuge and is the gateway to the Walrus Island Game Sanctuary. Togiak is a small traditional Yup’ik Eskimo village with a fishing and subsistence lifestyle. We spent the night in Togiak in a U.S. Fish & Wildlife bunkhouse, and then took a helicopter to Round Island. The helicopter could fit the pilot, two people and our gear, but it was a tight squeeze. Some of our gear had to be tied to the outside of the helicopter so we could make it out in one trip. The helicopter was an amazing way to see Bristol Bay and Round Island. You can see the steep cliffs and rocky beaches of Round Island. These cliffs are one of the reasons that we picked Round Island to set the cameras up on, as they would give us a good vantage point over the walruses. You can also see the cabin where we would spend three nights while we were setting up the cameras. Once we had unloaded all of our gear and got set up in the cabin, it was time to get to work. We walked the length of the island, about two miles, to pick the best camera site that would allow us to capture the walruses on their haulout and the surrounding area. We then had to carry all the camera equipment to the site we chose. Some of the materials, like the car batteries and all the tools, were very heavy. The whole process took about twelve hours to set up one of the camera pairs. There are several haulouts on Round Island. We chose two sites to monitor: we put cameras at First Beach and West Main Beach.   VIDEO: Cape Seniavin Learn about the researchers’ next adventure: placing remote cameras on Cape Seniavin. (1.5 minutes) Video Transcript How did you travel to Cape Seniavin? Just like Round Island, we had to spend time planning and preparing for the trip to Cape Seniavin. This time we flew from Anchorage to a town called King Salmon. King Salmon is a small town of about 400 people on the western Alaska Peninsula. It’s located at the Naknek River about 15 miles from Bristol Bay. Instead of a helicopter we took a small fixed-wing plane from King Salmon to Cape Seniavin. We flew over King Salmon and the Naknek River. As we approach Cape Seniavin, you can see the steep sandy bluffs and the beaches below. Like the cliffs on Round Island, the bluffs provide a great vantage point to set up the cameras to view the walrus haulout. No one lives at Cape Seniavin, and there is no landing strip. We landed right on the beach, with the waves crashing next to us. It was beautiful, but it does give you an idea of how remote we were. This time we had to carry all the equipment up the steep bluff to the spot where we wanted to place the cameras. Then we picked a good site for installing the cameras and got to work. We only chose one site at Cape Seniavin. The whole process this time took about eight hours to set up the cameras. We were much faster the second time around. Once the cameras were up and we had tested them, it was time to leave. Just like at Round Island, the cameras will stay up all summer watching the walrus, and in the fall we will travel back and pick them up. Then next spring we get to do it all over again. With their cameras in place, data collection began! Since the scientists were trying to observe walrus disturbances, it was very important that they not disturb the walrus during the actual study. For this reason, they visited the Bristol Bay haulouts in early spring and late fall, when the walrus were not present. This meant many months of images were recorded! Watch the two videos below to learn about the camera timing systems and what the researchers hoped to capture on film. VIDEO: TAKING Pictures Jll Prewitt describes how often the cameras are taking pictures and how the researchers chose to take pictures at those times.  (1.5 minutes) Video Transcript How often are these cameras taking pictures? We’re going to end up with a lot of pictures, because we’re limited just by the camera card size, but we’re trying to take them as often as possible. In the early morning hours they’re just going to be taken once an hour from 6am to 10am, then at 10am they’re actually taking pictures once a minute. And then in the later evening hours they’re being taken – from 6pm to 10pm – once an hour again. And the reason why we wanted to take them once a minute during the majority of the time is to be able to actually detect a disturbance. So, if we were just taking them once an hour all day, we might just, you know, in one picture have 300 walrus, and then in the next picture have zero walrus and we don’t know why. But if we’re taking them once a minute we might be able to actually see a vessel go by, or a plane land, or something else happen and all of the herd disperse or abandon the haulout all at one time, so we wanted that fine scale, once a minute. So there will be thousands of pictures at the end of the summer. VIDEO: COLLECTING Data Jill Prewitt explains what information she’ll be collecting from the pictures. (1 minute) Video Transcript What data are you collecting from these pictures? So what we’re recording, what we’re looking at primarily, is presence or absence of walrus in the picture. If we see walrus, what we’re going to try to do is count them as much as possible. Then we’ll take a look closely at the herd and see if we can detect any juveniles, especially calves, in the pictures, so we can get kind of an idea of who’s using that haulout. And then disturbance of course is one of our biggest questions, so we’ll be looking at the behavior. Whenever there’s walrus in the picture we’ll be looking at them serially, looking at them one after another, to detect whether walrus are reacting to disturbances such as lifting their head, moving, shifting around, or completely abandoning the haulout, and what might be causing that. So what data did these cameras really capture? What did Dr. Polasek and her team learn? Click "Results" to find out!      

animatedcollapse.addDiv('1', 'fade=1') animatedcollapse.ontoggle=function($, divobj, state){ //fires each time a DIV is expanded/contracted //$: Access to jQuery //divobj: DOM reference to DIV being expanded/ collapsed. Use "divobj.id" to get its ID //state: "block" or "none", depending on state } animatedcollapse.init() animatedcollapse.addDiv('2', 'fade=1') animatedcollapse.ontoggle=function($, divobj, state){ //fires each time a DIV is expanded/contracted //$: Access to jQuery //divobj: DOM reference to DIV being expanded/ collapsed. Use "divobj.id" to get its ID //state: "block" or "none", depending on state } animatedcollapse.init() Who is watching walrus? IMPACT (v) - to affect or change something else FORAGE (v) - to search for and collect food MIGRATE (of animal) (v)- to move seasonally from one area to another           Background Scientists know that when summer sea ice in the Arctic melts away from their shallow feeding grounds, Pacific walrus will haul out on land to stay near their food. The Icy Cape stampede showed scientists that land haulouts in the Chukchi Sea can be dangerous for young walrus. Scientists wonder how walrus populations will be impacted when the walrus have to use land haul outs more and more often. To understand how walrus populations might be affected by changes in their Arctic habitat, scientists first had to understand "normal" Pacific walrus behavior. Take a look at the videos and fact sheet below to explore what researchers already know about the mysterious Pacific walrus. VIDEO: The Pacific Walrus Understanding walruses' relationship with sea ice is important to understanding their behavior. (1 minute) Video Transcript Pacific walrus feed in relatively shallow water, hunting for small invertebrates on the ocean floor. In the Bering and Chukchi Seas, the continental shelf provides a vast area of shallow, rich feeding grounds for the walrus. Walrus haul out on sea ice or on land to rest between feeding trips. Although they are good swimmers, they don’t typically swim long distances, so they prefer to rest near where they eat. In the winter, arctic sea ice extends south into the Bering Sea, where large herds of male and female walrus spend the winter together. Then in the springtime, females and calves follow the melting sea ice north into the Chukchi Sea, while adult males separate from the rest of the population and migrate south to spend the summer in Bristol Bay. The male walruses in Bristol Bay typically haul out on land and feed near shore. In the Chukchi Sea, the females and calves spend their summer floating on the sea ice, drifting over the shallow continental shelf. In recent years, summer sea ice in the Arctic has melted beyond the edge of the continental shelf, leaving the females and calves without their traditional feeding and resting platforms.   WALRUS FACT SHEET (click to download .pdf) Female walrus and their calves use sea ice all year. They migrate to the Chukchi sea in summer because there is so much food available for them there. Watch the video below to hear Dr. Lori Polasek talk more about how females and calves may be affected if they can't haul out on sea ice and must move to areas on land, instead. VIDEO: Females and Calves Dr. Lori Polasek describes how females and calves might be impacted by hauling out on land instead of sea ice. (1.5 minutes) Video Transcript What are some of the possible impacts of females and calves hauling out on land instead of sea ice? There are several important facts about walrus that we had to understand before starting this project, and one of those is that land haulouts are primarily used by male walruses, of all ages, and ice is primarily used by females and calves. And the importance of ice, you can think of it as a mom and calf are floating around on a piece of ice and that keeps them moving across the water so it allows them to utilize different resources so they don’t impact a resource and completely deplenish [deplete] it. Also, by allowing them to float around, they’re not congregated together, where they’re more susceptible to predators, where then you allow the whole herd’s offspring to potentially be wiped out by a predator. It also takes your young, your offspring which are more susceptible to disease, and separates them from the population so that disease can’t spread as fast. So these new emerging haulouts with moms & calves packed together, then wipe out all of those protections of those calves by exposing them to disease as a group, by allowing them higher exposure to predators, and then by also having them together totally deplete resources in a localized area. Arctic sea ice extent is impacted by changes in seasonal and global climate. Walrus respond to changes in sea ice by migrating and adapting their behavior. Understanding how sea ice forms and why it melts can help scientists understand more specifically how walrus will be influenced. Check out the sea ice fact sheet below! SEA ICE FACT SHEET (click to download .pdf) This important background knowledge helped scientists from the Alaska SeaLife Center develop a research project studying walrus.      

animatedcollapse.addDiv('1', 'fade=1') animatedcollapse.ontoggle=function($, divobj, state){ //fires each time a DIV is expanded/contracted //$: Access to jQuery //divobj: DOM reference to DIV being expanded/ collapsed. Use "divobj.id" to get its ID //state: "block" or "none", depending on state } animatedcollapse.init() animatedcollapse.addDiv('2', 'fade=1') animatedcollapse.ontoggle=function($, divobj, state){ //fires each time a DIV is expanded/contracted //$: Access to jQuery //divobj: DOM reference to DIV being expanded/ collapsed. Use "divobj.id" to get its ID //state: "block" or "none", depending on state } animatedcollapse.init() Who is watching walrus? REMOTE (adj) - far from cities. In Alaska, this almost always means a place that is not on the road system and can only be reached by boat, plane, dogsled, snowmachine, or helicopter. DURATION (n) - the length of time CENSUS (n) - a count of individuals METHOD (n) - the way information is collected STILL CAMERA (n) - a camera that takes photos (not video) COST EFFECTIVE (adj) - worth the price MARITIME (adj) - related to marine (ocean) environments or conditions           The Plan Figuring out how to observe walrus at land haulouts was a challenge for the research team. Their system needed to be: Low cost Low maintenance (because sites are in remote locations) Able to measure duration (from the first walrus to arrive to the last walrus to leave) Able to visually observe the presence of walrus and allow for a census count Able to observe the cause(s) of possible disturbances Minimally disruptive to the animals While brainstorming, many methods were considered. The team thought about using airplanes to fly over haulout sites. They considered asking locals to report observations or stationing their own research staff near haulouts throughout the entire summer season. Finally, the team talked about placing remote video or still cameras at known haulout locations. The pros and cons for each method were evaluated. Flying over sites would be expensive and time consuming because the range of Pacific walruses covers thousands of miles. The sound of low flying planes might also disturb the animals. Local observations are impossible in many areas because haulouts are so remote. And stationing field researchers at known haulouts all season could prove very expensive. In the end, the team concluded that setting up remote cameras was the most cost-effective choice. They also decided that using still cameras set on timers would let them get the most data about how walrus were using land haulouts. Watch the two videos below to learn about the equipment Dr. Polasek's team used and some of the challenges they had to deal with while designing a plan to observe walrus using remote cameras. VIDEO: Equipment But won’t it get wet? Terril Efird talks about the equipment the team chose and how they keep it dry and functioning in the maritime climate. (1 minute) Video Transcript What equipment are you using to study walruses in remote areas? This is an example of one of the camera setups that we’ll have out in the field. It’s a Nikon digital camera, eight megapixel camera, and that’s wired into a 12-volt battery to keep it charged. A lot of these cameras will be going out for months at a time, so keeping the battery charged is really important, and to do that we’ll have a solar panel out there that will charge the larger battery. We’ll put the camera inside of this weatherproof and waterproof housing, and that’ll keep everything nice and dry so the electronics don’t fry while we’re out there. And we’ll have two of these at each of the sites, one looking at the haulout and then another one just looking offshore to see if we can capture any boats or predators of walrus that might be coming by and see how the walrus respond to that. VIDEO: Challenges Terril Efird describes some of the challenges involved in monitoring walrus. (35 seconds) Video Transcript What challenges did you face while planning for this project? One of the most challenges parts was picking our sites. We want to make sure that we have sites where we can go put these cameras up and we know that the walrus are going to come and be at those sites during the season. And not only have the walrus there but also have cliffs or bluffs that we can set these cameras up on top of so we can get a good vantage point, so we can get good estimates of how many walrus are hauling out and also what the immediate water access is like. With these challenges in mind, the scientists put a lot of thought into selecting the best locations to set up their cameras. Continue on to the "Action!" page to see which sites along Alaska's coastline they chose.      

animatedcollapse.addDiv('1', 'fade=1') animatedcollapse.ontoggle=function($, divobj, state){ //fires each time a DIV is expanded/contracted //$: Access to jQuery //divobj: DOM reference to DIV being expanded/ collapsed. Use "divobj.id" to get its ID //state: "block" or "none", depending on state } animatedcollapse.init() animatedcollapse.addDiv('2', 'fade=1') animatedcollapse.ontoggle=function($, divobj, state){ //fires each time a DIV is expanded/contracted //$: Access to jQuery //divobj: DOM reference to DIV being expanded/ collapsed. Use "divobj.id" to get its ID //state: "block" or "none", depending on state } animatedcollapse.init() Who is watching walrus? HYPOTHESIS (n) - a scientific explanation to a problem. Scientists form hypotheses to explain something that they observed. Scientists then test the hypothesis to determine how true it is.               Questions   Dr. Lori Polasek is a marine mammal scientist. When she has a scientific question, she designs a research project to help her find answers. She wants to learn how walrus use land haulouts. Dr. Polasek works together with her team to decide which specific questions they hope to answer. With this project, the team wants to learn: How many walruses are using a haulout? How long are they at the haulout? How often do the walruses use a haulout site? They already know that walruses are easily startled by things like airplanes or predators in the area, so they also want to learn more about how walrus react to disturbances while hauled out on land. Watch the videos below to learn more about the questions and hypotheses Dr. Polasek plans to look at with her study. VIDEO: DR. POLASEK'S RESEARCH Questions Learn what questions Dr. Polasek had about walrus that made her want to study them. (1 minute) Video Transcript Why did you want to study walruses? I think walruses as a whole are a very interesting species, they’re very tactile and gregarious. Why I specifically wanted to look at this particular study with walruses is because we had the mortality event that you guys heard about in 2009, where with ice loss moms and calves moved onto a land haulout, and we don’t really understand how the population will interact with humans and other species while they’re hauled out. What questions did you have? The question that I wanted to specifically look at was: what causes walruses to abandon a haulout – what disturbs them – and then how long does it take for them to come back?   VIDEO: DR. POLASEK'S Hypotheses Dr. Polasek explains four hypotheses that she will be testing in this investigation. (1 minute) Video Transcript What are your hypotheses? For this project we have four primary hypotheses specifically looking at disturbance: 1. The first hypothesis is that the new emerging haulouts will have a different reaction than the established haulouts. 2. That ice extent will impact how the two different haulouts will respond to disturbance events. 3. That mother and calves using the new haulouts will have a different reaction to disturbance events than males that are using the pre-established haulouts. 4. And lastly, that the time for recovery from a disturbance event will be different with the females and calves on the new haulouts versus the established haulouts with males. To answer these research questions, Dr. Polasek and her team needed to come up with a way to consistently observe walrus on their haulouts. Join the researchers as they develop a plan for watching walrus.        

animatedcollapse.addDiv('1', 'fade=1') animatedcollapse.ontoggle=function($, divobj, state){ //fires each time a DIV is expanded/contracted //$: Access to jQuery //divobj: DOM reference to DIV being expanded/ collapsed. Use "divobj.id" to get its ID //state: "block" or "none", depending on state } animatedcollapse.init() animatedcollapse.addDiv('2', 'fade=1') animatedcollapse.ontoggle=function($, divobj, state){ //fires each time a DIV is expanded/contracted //$: Access to jQuery //divobj: DOM reference to DIV being expanded/ collapsed. Use "divobj.id" to get its ID //state: "block" or "none", depending on state } animatedcollapse.init() Who is watching walrus? DEPLOY (v)- to set something up so that it is ready for action BLIND SPOT (n) - an area that cannot be seen because something is blocking your view DATA SET (n)- all of the information collected UPGRADE (v) - to improve the quality of something; to buy the next version of a product             Results   Cameras at the five sites captured data during the season of May-September 2011. For each of the sites, the timeline below shows (1) when the cameras were deployed, (2) when the first walrus was spotted at that location, (3) the date when the largest number of animals were counted on that site, and (4) the date of the last image taken by the cameras. The team collected census data by examining the photos at the end of the season and counting the walruses. Below are images captured from the haulout site on Cape Seniavin on August 4th, 2011. On this day, over 1,400 male walruses were counted hauled out in this single spot. Click on the thumbnail images below to see the larger versions: Researchers decided to add more cameras at this site in 2012 to avoid blind spots like the one created by the rock in the pictures above. On Hagemeister Island, cameras recorded the disturbance event seen below. Click on the thumbnail images below to see the larger versions: In the fourth photo you can see that these walrus quickly returned to the beach. The scientists couldn't see what caused the disturbance, but they think it was likely a bear or other land-based predator nearby. With clear images like the ones above, Dr. Polasek and her team agreed that camera monitoring at these remote sites is both possible and useful for understanding Pacific walrus behavior. Unfortunately, the type of camera the Alaska SeaLife Center team installed for the 2011 season tended to fail often. Many of the cameras stopped taking pictures before the last walrus left the site at the end of the season. So the 2011 data set isn't as complete as the team had hoped. They knew camera monitoring worked, but they needed to find a better type of camera. In 2011, the scientists were able to begin establishing their baseline. In 2012, they purchased new, more reliable cameras and added more haulout sites to their study. They're continuing to work on their baseline using male walrus in Bristol Bay, but with the help of the residents of Point Lay they've also set up their first cameras along the Chukchi Sea. Check the updates section for images captured in the second season!        

animatedcollapse.addDiv('1', 'fade=1') animatedcollapse.ontoggle=function($, divobj, state){ //fires each time a DIV is expanded/contracted //$: Access to jQuery //divobj: DOM reference to DIV being expanded/ collapsed. Use "divobj.id" to get its ID //state: "block" or "none", depending on state } animatedcollapse.init() animatedcollapse.addDiv('2', 'fade=1') animatedcollapse.ontoggle=function($, divobj, state){ //fires each time a DIV is expanded/contracted //$: Access to jQuery //divobj: DOM reference to DIV being expanded/ collapsed. Use "divobj.id" to get its ID //state: "block" or "none", depending on state } animatedcollapse.init() CURRICULUM SUPPLEMENTS Use the .pdf links below to access classroom activities for each section of the Watching Walrus virtual field trip. Teachers Guide.pdf Introduction_Activities.pdf Background_Activities.pdf Questions_Activities.pdf Plan_Activities.pdf Action_Activities.pdf Results_Activities.pdf Glossary.pdf               Welcome Teachers!   Educators and scientists at the Alaska SeaLife Center have teamed up to bring you a new and unique teaching tool. "Watching Walrus" is a virtual field trip (VFT) designed to introduce students to the process of designing a scientific research plan.  Throughout this exploration, students watch videos, examine images, and read fact sheets as they follow real-life scientists into the wilds of Alaska to study Pacific walrus populations.  This VFT can be used in a number of ways.  Individuals may choose to navigate through the slides independently, learning about Pacific walrus and why changes in Arctic climate have scientists concerned about these animals.  Self-guided exploration can be completed in under an hour.  Alternately, teachers may wish to facilitate a structured experience using the curriculum supplements.  Overview for Teachers Grade Level: 5th-8th Time needed:  6-8 one-hour class periods Nutshell: Students will gain experience designing a scientific research plan while learning about an actual research project that studies Pacific walrus in Alaska. Objectives: After completing this virtual field trip, students will be able to: - Describe how the research plan they develop meets the objectives set out by Alaska SeaLife Center scientists - Explain how Arctic animals, like Pacific walrus, may be impacted by decreased availability of sea ice - Locate geographic features of the Arctic and subarctic oceans using a world map Background: Pacific walrus are a marine mammal species native to the Bering and Chukchi Sea area between Alaska and Russia. A member of the pinniped (fin-footed) family, walrus are ocean bottom feeders that can weigh up to one and a half tons. Walrus live along the continental shelf where water is shallow and food resources are plentiful. Floating sea ice provides females and calves with access to varied food resources, protection from predators, and isolation from disease. Though walrus are a social, gregarious species (males are known to haul-out together in large numbers), females with calves usually stay separate from the herd, depending on sea ice for their haulouts. As a consequence of warming Arctic climate, scientists have observed that sea ice in the Arctic Region is shrinking. This means decreased habitat for Pacific walrus, particularly for vulnerable segments of the population like females with calves. As a result of these changes in habitat, walrus have been observed hauling out on land in numbers rarely seen before. Not only does this make populations more susceptible to disease, predation, and depletion of food resources, it also means moms and calves are living in large herds rather than in small groups or pairs. Walrus are known to abandon a haulout upon disturbance (e.g., by the presence of boats, people, predators). In such cases, walrus move quickly from land into water when they are on ice. As walrus are observed gathering in large groups (as many as 14,000 walrus have been observed hauling out together) scientists are concerned about the increased consequences of such disturbances. Instances of stampede have been recorded, including that at Icy Cape (described in Watching Walrus), leaving hundreds of animals dead. Such events led scientists at the Alaska SeaLife Center to begin research observing Pacific walrus. Their intention is to increase the understanding of what causes these animals to abandon a haulout.  They are particularly interested in how the patterns in walrus response differ between established land haulout outs and newly emergent ones. The research of lead Marine Mammal Scientist Dr. Lori Polasek, Marine Mammal Research Associate Jill Prewitt, and Research Coordinator Terril Efird inspired this virtual field trip. Join us as we explore some of Alaska’s most remote coastline and work to learn more about how sea ice loss is impacting Pacific walrus. Throughout their exploration of Watching Walrus, students will engage in discussions, make observations, complete a research ma,p and design their own research plan for observing walrus as they use land haulouts.  To use this virtual field trip you will need: - Internet access, video-streaming capabilities - Access to Watching Walrus the virtual field trip - Projection system (with audio) to display VFT content or a computer lab - Teacher guide and corresponding curriculum supplements (arranged as PDFs in the right hand column of this page) Specials Notes to Teachers: Guide to State & National Standards addressed in this field trip (Click to download .pdf) Using the Virtual Field Trip Teachers may choose to have the class navigate through Watching Walrus as one large group, using a projection system to display content, or have students work independently in a computer lab setting.  All activities included in the curriculum supplements work best in a classroom setting with tables arranged into small groups. Using Curriculum Supplements We encourage teachers to read through the Teacher’s Guide and all Curriculum Supplements before beginning Watching Walrus with your students.  Some projects, like the Research Map, will be completed over the course of this exploration.  Videos and PDFs Many sections of Watching Walrus include embedded videos and .pdf documents.  Teachers may elect to print class sets of the .pdfs or use them digitally.  All .pdf files are 1-2 pages long.  Most videos are less than 3 minutes long (exact durations can be found in the description of each video).  Video transcripts can be accessed by clicking the video transcript button below each clip.  Vocabulary Important vocabulary terms are included in the VOCABULARY box in the lower right-hand corner of each section.  A complete glossary of terms is included as a .pdf in the FOR TEACHERS section.  Age appropriateness This virtual field trip is designed to meet Alaska state and National science content for students in grades 5-8.  We understand that students in grades 5-8 may display a variety of skill sets and reading levels; therefore, this grade distinction is designed only as a guideline.  The scientific process discussed in this virtual field trip is appropriate for and may be enjoyed by older students, as well.  Older students may progress through this virtual field trip at a faster rate than that outlined above.  Additional Resources: Web Resources: Walrus Natural History Alaska Department of Fish & Game (ADF&G): Walrus Profile Walrus Information from SeaWorld/Busch Gardens National Geographic Kids Creature Features: Walrus NOVA: How to Speak Walrus USFWS Species Info: Walrus ADF&G Walrus Island, State Game Sanctuary Sea Ice National Snow and Ice Data Center NASA Earth Observatory: Sea Ice Print Resources: For an overview of Pacific walrus facts, and information on other Alaskan marine mammals: Wynne, Kate. Guide to Marine Mammals of Alaska. Fairbanks, AK: University of Alaska, Fairbanks, Alaska Sea Grant College Program, 2007. For more information on Alaska marine invertebrates, including those predated by Pacific walrus: Field, Carmen M., and Conrad J. Field. Alaska's Seashore Creatures: a Guide to Selected Marine Invertebrates. Anchorage: Alaska Northwest, 1999. For more information about the Bering Sea region: Johnson, Terry Lee. The Bering Sea and Aleutian Islands: Region of Wonders. Fairbanks, AK: University of Alaska, Fairbanks, Alaska Sea Grant College Program, 2003.   Contact Us: If you have any questions about this virtual field trip, please contact the Alaska SeaLife Center Education Department at education@alaskasealife.org or 907-224-6306. For more information on classes we offer, including our inquiry-based 50-minute Distance Learning programs, visit our website at www.alaskasealife.org.          

animatedcollapse.addDiv('1', 'fade=1') animatedcollapse.ontoggle=function($, divobj, state){ //fires each time a DIV is expanded/contracted //$: Access to jQuery //divobj: DOM reference to DIV being expanded/ collapsed. Use "divobj.id" to get its ID //state: "block" or "none", depending on state } animatedcollapse.init() animatedcollapse.addDiv('2', 'fade=1') animatedcollapse.ontoggle=function($, divobj, state){ //fires each time a DIV is expanded/contracted //$: Access to jQuery //divobj: DOM reference to DIV being expanded/ collapsed. Use "divobj.id" to get its ID //state: "block" or "none", depending on state } animatedcollapse.init() Who is watching walrus? DISTRIBUTION (n) - how thickly or evenly something is spread out over an area             2012 Updates from Bristol Bay In May 2012, the researchers returned to Bristol Bay. Installing cameras was again a big adventure. After their plane broke down, the team unexpectedly spent a night sleeping on the beach of a remote island! Check out some of their observations from the 2012 season! We'll continue adding data as more is analyzed over the winter. Cape Seniavin Disturbance (click to download .pdf) VIDEO: Foot Traffic Disturbance Walruses at Cape Seniavin are disturbed by people walking along the beach. (1 minute) Sometimes just the presence of people on the beach is enough to disturb walrus. These folks might not have known it, but the Marine Mammal Protection Act makes it illegal to get within 100 yards of any marine mammal. VIDEO: Airplane Disturbance Walruses at Cape Seniavin are disturbed by an airplane flying overhead. (1 minute) Just the sound of a plane flying low overhead was enough to disturb these walrus at Cape Seniavin. Scientists are curious what impact repeated disturbances (like planes flying over daily or people using the area regularly) might have on the number of walrus using a haulout. Next Steps In the summer of 2012, the scientists took a huge step. They installed their first cameras along the Chukchi Sea near the village of Point Lay, Alaska. Dr. Lori Polasek hoped that, if the season's sea ice melted past the edge of the walruses' normal range, the animals might choose to haulout on land in this area. She had good reason to expect this, because walrus had hauled out near Point Lay twice in recent summers. Since the beach in this area is so flat, the team could not rely on cliffs or other natural features to provide good vantage points for their cameras. Instead, they constructed a tower. The tower was designed so that local volunteers could rotate the camera angles depending on where along the beach the walrus had hauled out. However, the team didn't get any data from the Point Lay cameras in 2012. This time, it wasn't because the cameras failed to work. Instead, sea ice remained available in that area, so no walrus hauled out at the site this year. An organization called the National Snow and Ice Data Center works together with NASA to monitor sea ice coverage in the Arctic using satellites. Data is collected daily and is used to form models that help scientists predict how much sea ice will cover the Arctic during different times of the year. Satellite monitoring of Arctic sea ice began in 1979. When scientists compare historical data with recent ice conditions, they can say with confidence that conditions in the Arctic are changing. In fact, satellite data shows that the amount of sea ice covering the Arctic was lower in the summer of 2012 than in any other year since monitoring began! So why didn't walrus haul out on land in Alaska if there was less sea ice in the Arctic than ever before? It all comes down to the distribution of ice. Although there was less ice overall in 2012, patchy areas of ice remained floating in the Chukchi Sea. There was enough floating sea ice to allow females and calves to stay near their feeding grounds without having to move to land-based haulouts. This year's results don't mean the end of the research project and Dr. Lori Polasek isn't abandoning the idea of monitoring haulouts in the Chukchi Sea. In fact, the team hopes to add more monitoring sites along this area in upcoming years. Global climate patterns are changing and the impact is evident in the Arctic. These changes are visible in warmer-than-average annual global temperatures and in a decrease in the extent of summer sea ice in the Arctic over many decades. Climate scientists know that looking at the conditions in one year doesn't paint a clear picture of long-term conditions in the Arctic. In the same way, the walrus research team recognizes that, just because walrus did not use Alaska land-based haulouts along the Chukchi in 2012, it doesn't mean they won't rely on these areas in the future. Stay tuned for more information as this research project continues. In the mean time, educate yourself about how humans are impacting climate in the Arctic and around the globe. Do your part to help lessen our impact: learn about your carbon footprint and about what earth-friendly actions you can take in your everyday life. Dr. Lori Polasek and her team would like to thank all the sponsors and partners for this research project, including the Alaska Department of Fish and Game, Defenders of Wildlife, the National Fish and Wildlife Foundation, SeaWorld & Busch Garden’s Conservation Fund, and the United States Fish and Wildlife Service. 2012 Updates from US Geological Survey   Walruses at Cape Seniavin are disturbed by people walking along the beach. (1 minute)      

  animatedcollapse.addDiv('A', 'fade=1') animatedcollapse.ontoggle=function($, divobj, state){ //fires each time a DIV is expanded/contracted //$: Access to jQuery //divobj: DOM reference to DIV being expanded/ collapsed. Use "divobj.id" to get its ID //state: "block" or "none", depending on state } animatedcollapse.init() animatedcollapse.addDiv('B', 'fade=1') animatedcollapse.ontoggle=function($, divobj, state){ //fires each time a DIV is expanded/contracted //$: Access to jQuery //divobj: DOM reference to DIV being expanded/ collapsed. Use "divobj.id" to get its ID //state: "block" or "none", depending on state } animatedcollapse.init()         A research vessel is a busy place! On a ship the size of the U.S. Coast Guard Cutter Healy, several groups of scientists will be working on the boat at once, each with their own research project. Watch the video below to learn about what daily life was like as the research team collected samples for their sea ice project. VIDEO: A DAY IN THE LIFE Martin Schuster describes daily life working as a research technician on the sea ice project. (2:45) Video Transcript "My name is Martin. I've been a grad students at UAF (University of Alaska Fairbanks) in the Masters program in Marine Biology for about four years now. "In the sea ice project working with Rolf my role was as technician, so I was basically organizing our gear before we would go out, and making sure all our sleds were loaded up with all the various paraphernalia that you need to go out and dirll holes in the sea ice and sample water. Our project was to get off the ice breaker on either a little ladder that they would lower down to the ice, or with a helicopter, which was the preferred way to do it. My job was basically to pack all the gear before we got out. To double, triple check and make sure that we had everything, because once you're twenty miles away from the ice breaker, if you forget something it's not a good thing. And then once we got onto the ice we would unpack everything. We would take some ice cores and then we would section the ice cores so that we could look at each individual strata in the sea ice later on and determine what kind of biota is living inside there. We'd also cut a larger hole in the sea ice so we could lower a device called a ctd. This thing would basically give us various water temperature and clorofil readings as it goes down into the water and then we'd pull it back up by hand. Most of the work was definitely getting things together and then cleaning up afterword. You have a pretty limited time on the ice and you want to get as much work done as you can. And then as soon as you're done it's time to go back to the ship because of polar bears." Text on screen "Wait a second.... POLAR BEARS" Martin: "It was a worry, I mean whenever we were on the ice directly from the ship we had what's called a bear guard. It was a Coast Guard person, fully dressed up in their survival suit with a rifle. And they would stand and watch us the whole time, just to make sure there were no bears around. So it was expected that we would see some bears, but sadly we did not. "We were just out during the day which was really neat because we got to see every sunrise and sunset, which on the sea ice is just spectacular. It was really, really cool. Just go, go go all the time. Whenever there's a chance to work, we were working. You get into sort of a motion after the first couple days, and time just starts to fly by. You really lose all sense of what day it is in the week, because it doesn't really matter. You have your work cut out for you that day, you know what you're going to do. You set all your stuff out, and you just do it. One day just begins to blend into the next. And it's actually better to be busy on a ship like that than it is to be idle, because you can get bored pretty easily. At the end of the busy day there's still work to be done. Back on the ship, the scientists have to download data to their computers and store samples for later analysis. Finally, they repack the gear for another day on the ice. On the USCGC Healy, every day is a work day. The team will continue this routine each day for several weeks! The team is excited to begin piecing together the food web, but analysis will have to wait until later, back in the lab in Fairbanks.       WHO IS STUDYING SEA ICE?   BIOTA (n)- the animal or plant life in an area   CHLOROPHYLL (n)- a green pigment found in plants and algae    

  animatedcollapse.addDiv('1', 'fade=1') animatedcollapse.ontoggle=function($, divobj, state){ //fires each time a DIV is expanded/contracted //$: Access to jQuery //divobj: DOM reference to DIV being expanded/ collapsed. Use "divobj.id" to get its ID //state: "block" or "none", depending on state } animatedcollapse.init() animatedcollapse.addDiv('2', 'fade=1') animatedcollapse.ontoggle=function($, divobj, state){ //fires each time a DIV is expanded/contracted //$: Access to jQuery //divobj: DOM reference to DIV being expanded/ collapsed. Use "divobj.id" to get its ID //state: "block" or "none", depending on state } animatedcollapse.init()         Before setting out to explore what's living within the Bering Sea's annual sea ice, scientists need to understand the sea ice itself. The first important step is to understand how sea ice forms. When we think of the world’s oceans, we usually imagine large bodies of blue-green salt water. However, in the polar regions of our planet, conditions can be so cold that the surface of the ocean freezes. This happens when cool air temperatures and wind combine to chill the top layer of seawater to less than 28.8°F (-1.8°C). Take a look at the videos below to learn more about how sea ice forms and how it fits into the Bering Sea ecosystem: VIDEO: THE SCIENCE OF SEA ICE This video explains how sea ice differs from ice formed on fresh water lakes and describes why sea ice is an important part of the Bering Sea ecosystem. (1:55) Video Transcript Salt water and fresh water have very different physical properties.  You may have noticed one example of this already- seawater freezes at a cooler temperature.    This is because of the dissolved salt that makes sea water salty. When ocean water freezes, only the fresh water forms ice crystals leaving the salts behind in concertrated liquid droplets called brine. As the water continues to freeze, the brine droplets grow and accumulate to form tiny passageways called brine channels. So instead of being solid like an ice cube, sea ice is laced with these little brine channels that are filled with extremely salty water.  Because sea water freezes at a lower temperature than fresh water, sea ice can only exist in very cold locations.  The National Snow and Ice Data Center estimates that only about “15% of the world’s oceans are covered by sea ice during part of the year”.  Most of this sea ice is in the Arctic Ocean and the Southern Ocean surrounding Antarctica.  Some areas of the ocean are covered with sea ice all year, while in other areas sea ice is only present during the coldest months of the winter. The Bering Sea is an example of a region that only has sea ice during part of the year.  Arctic sea ice begins to grow in September, extending South into the Bering Sea as the winter continues.  The maximum sea ice extent is in March, and in the spring ice begins to melt away.  Plants, wildlife and humans all rely on the timing of the Spring sea ice melt. For plants, melting ice means access to light for photosynthesis.  For animals and humans it means access to the food resources they depend on.  Scientists expect that changes in the timing and extent of sea ice cover in the Bering Sea may impact the whole ecosystem. Brine channels inside the sea ice provide a unique habitat for ice algae. When sea ice melts in the spring, this algae is released into the water below. In areas like the Bering Sea, where sea ice is not always present, the spring sea ice melt is an important annual event for the ecosystem. VIDEO: SEA ICE ALGAE THROUGH THE SEASONS This animation illustrates how sea ice algae in the Bering Sea varies through the seasons. (0:55) To help them describe different parts of the ocean from the top down, scientists divide it into zones based on types of habitats. In the Bering Sea, three habitat zones exist: the sympagic, the pelagic and the benthic. Dr. Gradinger and his team believe that, in the spring, plants and animals in the sympagic, pelagic and benthic zones are all impacted by sea ice.  What they want to better understand is exactly how these species are impacted, by learning how they fit together in the food web. Understanding what life is like in different areas of the Bering Sea ecosystem during the springtime helps Dr. Gradinger and his team begin to predict how the ecosystem might respond if Arctic sea ice coverage continues to recede.  The research team's curiosity with this previously understudied ecosystem led to the development of specific research questions and a project proposal that took them out on the ice!       WHO IS STUDYING SEA ICE?   POLAR (adj)- Describing the area of the Earth's surface around the North and South poles.   BRINE (n)- very salty water   PELAGIC (adj)- in the open ocean environment   BENTHIC (adj)- in the sea floor environment   SYMPAGIC (adj)- in the ice environment   PRIMARY CONSUMER (n)- an animal that feeds on plants; an herbivore   LARVAL STAGE (n)- a juvenile stage many animals go through before they grow into adults  

  Spring/Summer 2026 Availability March 5 - August 31: 3:00 pm Daily   Duration: Approximately 30-minute tour Maximum of 6 people per tour - Open to all ages All brain, no bones! Immerse yourself in a world of suckers and beaks. Go behind the scenes and join a member of our Aquarium Team to participate in an octopus feeding and learn more about these fascinating creatures. One Group Per Tour Group Size of 1-2 Guests: $289.95 Group Size of 3 Guests: $339.95 Group Size of 4 Guests: $389.95 Group Size of 5 Guests: $439.95 Group Size of 6 Guests: $489.95 Members get a 20% discount, buy your membership today and use the benefits immediately.  (does not include admission) *Guests under 16 must be accompanied by a paying adult Tickets only valid for date selected. Online tickets must be purchased at least one day in advance.    

  BBDonorFormLoader.newBlackbaudDonationFormZoned('tcs', 'p-3Wba-LFiGkm-LNS_YH9QNg', '000f8ac0-36d4-4053-95a1-2fee011f4e6b', 'usa')   The Alaska SeaLife Center generates and shares scientific knowledge to promote understanding and stewardship of Alaska's marine ecosystems.   The Alaska SeaLife Center is a 501(c)(3) nonprofit organization with tax identification number 92-0132479 Legal name: Seward Association for the Advancement of Marine Science dba Alaska SeaLife Center Checks can be mailed to PO Box 1329, Seward, AK 99664

  animatedcollapse.addDiv('1', 'fade=1') animatedcollapse.ontoggle=function($, divobj, state){ //fires each time a DIV is expanded/contracted //$: Access to jQuery //divobj: DOM reference to DIV being expanded/ collapsed. Use "divobj.id" to get its ID //state: "block" or "none", depending on state } animatedcollapse.init() animatedcollapse.addDiv('2', 'fade=1') animatedcollapse.ontoggle=function($, divobj, state){ //fires each time a DIV is expanded/contracted //$: Access to jQuery //divobj: DOM reference to DIV being expanded/ collapsed. Use "divobj.id" to get its ID //state: "block" or "none", depending on state } animatedcollapse.init()         At the northern fringe of the Pacific Ocean, along the United States’ most remote boundary, lies the Bering Sea.  Covering an area more than three times the size of Texas (nearly 900,000 sq. mi.), and supporting some of the most valuable fisheries in the world, the Bering Sea’s remote waters have attracted explorers for thousands of years.  This cold maritime environment is home to a huge diversity of life. From migrating whales to clams, seabirds, seals and fish, organisms in the Bering Sea have evolved to make up one of the world’s most unique ecosystems.  The Bering Sea’s high northern latitude means nearly continuous daylight throughout the summer months.  In contrast, the winters are long and dark. Winter conditions are so harsh that the surface of the ocean, over much of the Bering Sea, freezes.  Organisms living in this region have had to adapt to these challenging, extreme, and changeable polar conditions. VIDEO: INTRODUCTION TO THE BERING SEA Discover why the Bering Sea is important to people in Alaska and around the world (1:50) Video Transcript Despite its remoteness, the coastline of the Bering Sea is home to many Alaskans. There are no roads connecting these remote communities to Alaska’s larger cities, so people living along the coast rely on the ocean to sustain their way of life. Subsistence hunting and fishing of marine animals has traditionally been an important source of food, material for clothing, fuel and culture for many people living in these villages. Successful harvest of these marine resources requires an understanding of the Bering Sea ecosystem including the ability to predict how weather and species distribution vary throughout the year. However, it isn’t only people who live beside the Bering Sea who are affected by it. Even if you’ve never heard of the Bering Sea, chances are it’s had an impact on your life. If you’ve ever eaten fish sticks or tried ‘artificial’ crab meat, you were probably eating Pollock. Pollock is a species of cod that live in the Bering Sea. These fish make up the largest single species fishery in the United States. On average two billion pounds of Pollock are harvested in Alaska every year (that’s equal to about 100 times the weight of the Eiffel Tower in Paris). The Pollock fishery in Alaska is worth about three hundred million dollars a year, making it an important part of our state and national economy. So whether you live beside Alaska’s coast, or thousands of miles from it, the Bering Sea is worth caring about. It’s home to unique animals and dynamic people. It provides American jobs and is a source of food, insight and inspiration. Recently, people living in coastal areas, companies exploring and building along the coast, and researchers with an eye on the Bering Sea have observed significant and measureable changes. Sea ice has been arriving later in the winter.  Animals are migrating farther north and the distribution of species is changing.  Some animal populations are growing quickly, while others seem to be in decline. These changes directly impact everyone who relies on the Bering Sea.  They make it harder for local communities to support their food and infrastructure needs, and harder for companies to plan on the expected ice or weather conditions two years down the road.   VIDEO: ARCTIC MELT IN ACTION This NOAA visualization illustrates how sea ice cover in the Arctic changes annually across the seasons. Compare 2012's record melt season to the historic (1979-2000) median. (0:34) Changes in the Bering Sea won’t just affect people and their activities; they may also impact the balance of the marine ecosystem. This has scientists concerned. They realize that before we can make predictions about what these changes may mean for this important marine ecosystem, we need to learn more about the area as it is now. Dr. Rolf Gradinger and his colleagues at the University of Alaska Fairbanks are one group of researchers working to better understand the Bering Sea. Observations they've made have sparked scientific questions and inspired futher research about the Bering Sea food web.  VIDEO: INTRODUCTION TO THE RESEARCH PROJECT Dr. Rolf Gradinger explains why the team is interested in studying the Bering Sea ecosystem. (1:30) Video Transcript "My name is Rolf Gradinger. I'm a faculty member at the School of Fisheries and Oceans Sciences (at UAF). I have a research interest in Arctic Ecology and I've been doing this now for quite a while. "Since 2008 I worked in the Bering Sea in spring. The Bering Sea is very unique, it's a unique ocean because it's part of the Arctic system. The Bering Ecosystem is very rich in a lot of marine resources, there are lots of fish living in the Bering Sea like Pollock, and most of the US fisheries are actually happening in the Bering Sea. In addition to that you will find lots of marine mammals and seabirds in the Bering Sea. And a lot of people living in that region, like native populations on Saint Lawrence Island or on the Alaskan coastline rely on marine resources. "Now the big question is, which you might have heard, that ice conditions in the Arctic are changing. Summer sea ice is disappearing, ice melts happen much sooner, so there is a tremendous change in the Arctic. "The question is, what does it all mean to the ecosystem if ice conditions change? For really addressing that question you need to know what lives with the ice. You know about the Polar bears and the seals living on the ice, but there's actually little critters that live within the ice, and they grow within the ice, and they only exist within the ice. Our part was to learn as much as possible about the spring biology, in association with ice in the Bering Sea." Dr. Rolf Gradinger and his team know that among the many species of plant and animal life living with the sea ice are marine plants called algae. The team wants to better understand the role that this sea ice algae plays in the entire Bering Sea food web during the spring. Dr. Gradinger knows that to accurately hypothesize the importance of this algae bloom, the researchers will need to study the science of sea ice as well as discover what types of living things make their homes throughout the sea ice ecosystem.        WHO IS STUDYING SEA ICE?   FISHERY (n)- an area where fish are caught   MIGRATE (v)- to move seasonally from one area to another   ORGANISM (n)- an individual life form   ECOSYSTEM (n)- a community of interacting living organisms and their physical environment   LATITUDE (n)- a measure of the distance north or south of the equator, expressed in degrees   SUBSISTENCE (n)- a style of living where a person relies on the local environment for survival   DISTRIBUTION (n)- the way something is spread over an area   ALGAE (n)- any aquatic plant or plant-like organism (seaweed)    

  animatedcollapse.addDiv('1', 'fade=1') animatedcollapse.ontoggle=function($, divobj, state){ //fires each time a DIV is expanded/contracted //$: Access to jQuery //divobj: DOM reference to DIV being expanded/ collapsed. Use "divobj.id" to get its ID //state: "block" or "none", depending on state } animatedcollapse.init() animatedcollapse.addDiv('2', 'fade=1') animatedcollapse.ontoggle=function($, divobj, state){ //fires each time a DIV is expanded/contracted //$: Access to jQuery //divobj: DOM reference to DIV being expanded/ collapsed. Use "divobj.id" to get its ID //state: "block" or "none", depending on state } animatedcollapse.init()         Many factors needed to be considered as Dr. Gradinger and his team planned their research. In addition to having the necessary sampling equipment, it was important that they time the research trips so they would be collecting samples during the spring sea ice melt season.  If they traveled too early, their measurements might underestimate the importance of ice algae. If they traveled too late, the ice would all have melted and there would be no ice algae for them to measure.  The team chose research sites in the eastern Bering Sea because it is a very productive region of water. Picking the research area was only the beginning. Next, they had to select the right tools to help them answer their research questions. Navigate through the images below to learn how each tool helped the team answer their research questions: With many samples to collect at every study site, a researcher's job is never dull. Can you imagine what daily life would be like on a 400-foot long ship floating in the middle of the Bering Sea?       WHO IS STUDYING SEA ICE?   MELT SEASON (n)- the time of the year when melting occurs   PRODUCTIVE (adj)- being rich in resources; in this case, with valuable resources like fish   PROPEL (v)- to push or move in a particular direction   WATER COLUMN (n)- the area of water between the surface and the sea floor   ALGAL GROWTH (n)- the process of algae growing   ROV (n)- a remotely-operated vehicle  

  animatedcollapse.addDiv('1', 'fade=1') animatedcollapse.ontoggle=function($, divobj, state){ //fires each time a DIV is expanded/contracted //$: Access to jQuery //divobj: DOM reference to DIV being expanded/ collapsed. Use "divobj.id" to get its ID //state: "block" or "none", depending on state } animatedcollapse.init() animatedcollapse.addDiv('2', 'fade=1') animatedcollapse.ontoggle=function($, divobj, state){ //fires each time a DIV is expanded/contracted //$: Access to jQuery //divobj: DOM reference to DIV being expanded/ collapsed. Use "divobj.id" to get its ID //state: "block" or "none", depending on state } animatedcollapse.init()         Designing a research project takes a lot of careful thought. Before scientists can be awarded funds to begin their project, they must design a detailed proposal explaining what they hope to learn with their study. This process begins with a scientific question and expands to include what the scientists expect to find, also known as a hypothesis. VIDEO: RESEARCH QUESTIONS Dr. Katrin Iken outlines the team's research questions for the sea ice project. (1:45) Video Transcript "My name is Katrin Iken, and I am a faculty member here in the School of Fisheries and Ocean Sciences at the University of Alaska Fairbanks, and my specialty as a faculty member is in Marine Biology. "A big question in this project is- what is the significance of the sea ice for the (eco)system, and what would it mean if sea ice were to go away if climate becomes warmer, so we need to understand what happens, how organisms react to this. My specific role was to look at loss of sea ice in terms of how important is that sea ice for the food web. "What I like about the benthic environment in a way is that it stays where it is. They don't move a whole lot. The conditions around it might change, but the organisms themselves actually stay in place. If you are a worm sitting in the mud, then you are sitting in that mud, you're not moving around a whole lot. Even if they move they often move over very small areas. That's very different than water column organisms that get just swept away with currents. "So if I am interested in how do conditions in a certain region change over time, again we are investigating quite a bit of climate change related scenarios, then having something that stays in place and is exposed to changing conditions, you can actually look at how changes are reflected in those organisms." Scientists hypothesize that the algae that grows on sea ice is an important food source for primary consumers living in the pelagic and benthic zones. They are concerned that, as ice conditions change as result of changing climate, it will affect the species that rely on this ice algae. The problem is, little data had been collected in the past, so not much was known about how much ice algae grows in the Bering Sea in spring or which species of animals were eating it. During the spring of 2008, 2009 and 2010, Dr. Gradinger and his colleagues completed field work in the eastern Bering Sea in an effort to answer these questions with financial support from the National Science Foundation (award 0732767). In order to test their hypotheses, Dr. Iken and the other scientists had to develop a plan. How would they get to the Bering Sea?  What tools would they use to sample and study the ice and the ice algae?  How would they discover which species were dependent on sea ice and how the food web fit together?  All of these challenges had to be carefully considered before the team even traveled to the field. After all, once you’re out in the middle of the Bering Sea, there’s no going back for something you forgot!         WHO IS STUDYING SEA ICE?   PROPOSAL (n)- a plan put forward for consideration; in this case, a science project   HYPOTHESIS (n)- a proposed explanation to a question that must be tested   FOOD WEB (n)- all the interconnected food chains in an ecosystem   DATA (n)- factual information    

  animatedcollapse.addDiv('1', 'fade=1') animatedcollapse.ontoggle=function($, divobj, state){ //fires each time a DIV is expanded/contracted //$: Access to jQuery //divobj: DOM reference to DIV being expanded/ collapsed. Use "divobj.id" to get its ID //state: "block" or "none", depending on state } animatedcollapse.init() animatedcollapse.addDiv('2', 'fade=1') animatedcollapse.ontoggle=function($, divobj, state){ //fires each time a DIV is expanded/contracted //$: Access to jQuery //divobj: DOM reference to DIV being expanded/ collapsed. Use "divobj.id" to get its ID //state: "block" or "none", depending on state } animatedcollapse.init()         Three years of spring sampling trips resulted in thousands upon thousands of data samples. Back at the University of Alaska Fairbanks, the scientists resettle into their lab. Now with all their samples in front of them, they work to draw meaning from these snippets of information. It's like putting together a puzzle, but this one will take years to finish! Dr. Rolf Gradinger quickly discovered that there was a huge amount of ice algae production happening in the Bering Sea, even more than the team had hypothesized! Dr. Gradinger found that as much as 50% of all the algae growing in the Bering Sea in spring was growing with the sea ice. Armed with this knowledge, Dr. Bluhm and Dr. Iken set to work decoding the food web. First, they wanted to figure out which animals in the Bering Sea feed directly on ice algae. The two scientists are especially interested in animals that feed directly on the sea ice, because changes in the food available for these species will impact animals all the way up the food chain. To study the diet of these primary consumers they used a process called stable isotope analysis. VIDEO: BUILDING A FOODWEB USING STABLE ISOTOPES Learn about how researchers can piece together the marine food web by looking at muscle tissue (1:35) Video Transcript You might have heard the saying before, "you are what you eat". It turns out it's true! Certain chemicals from the foods we eat stay inside our body's tissue long after the food has been digested. Because different foods have different chemicals in them, each type of food has its own chemical signature, it's kind of like a fingerprint. Scientists can look at these signatures inside an animals tissues to see what kinds of food the animal has been eating. The chemicals that scientists look for are called stable isotopes.   In marine ecosystems like the Bering Sea, scientists use this technique to figure out which animals are eating certain types of algae. Imagine you're a clam. You live in the silty sediments at the bottom of the Bering Sea. In the springtime you eat 10 units of food in a day. Of these ten units, eight are of sea ice algae and two are from phytoplankton from the pelagic zone. You go along like this, every day eating eight units of sea ice algae and two units of phytoplankton, until one day.... SCOOP... you end up in our researchers sediment grab sampler. You're hauled up to the surface and taken to the laboratory where a sample of your muscle tissue is removed and tested for stable isotope signatures. The scientists recognize the signature of the stable isotopes from the algae you ate, so they can tell that the ice algae was an important part of your diet. This same techique can be used on animals higher up the food chain. Even the walrus who ate the clam who ate the sea ice algae will have muscle tissue with the sea ice algae's special signature. With the help of stable isotope analysis, the pieces begin falling into place. Dr. Bluhm and Dr. Iken are able to connect primary consumers to the ice algae they ate using their muscle tissue. The food chain doesn't stop there! These primary consumers can be connected to secondary consumers, who can be connected to one of the ecosystem's top predators: the polar bear. Suddenly, scientists are able to show that sea ice isn't just important to a few species; it connects animals throughout the food web! Navigate through the food web below to see what scientists have learned about how arctic organisms are interconnected: The evidence collected as part of this project clearly supports the team's hypothesis that sea ice is an important food source for pelagic and benthic Bering Sea communities during the springtime. The question now is: What will it mean for marine life as sea ice conditions in the Bering Sea continue to change? Scientists aren't sure yet, but they know that research projects like this one are important because they will provide baseline information which will help the science community quantify ecosystem changes over time.       WHO IS STUDYING SEA ICE?   ISOTOPES (n)- different forms of the same chemical   INTERCONNECTED (adj)- connected with each other   CLIMATE (n)- the general weather conditions in an area over a long period of time   BASELINE (n)- a starting value that is used for comparison to future values   QUANTIFY (v)- to assign a quantity to something              

  animatedcollapse.addDiv('1', 'fade=1') animatedcollapse.ontoggle=function($, divobj, state){ //fires each time a DIV is expanded/contracted //$: Access to jQuery //divobj: DOM reference to DIV being expanded/ collapsed. Use "divobj.id" to get its ID //state: "block" or "none", depending on state } animatedcollapse.init() animatedcollapse.addDiv('2', 'fade=1') animatedcollapse.ontoggle=function($, divobj, state){ //fires each time a DIV is expanded/contracted //$: Access to jQuery //divobj: DOM reference to DIV being expanded/ collapsed. Use "divobj.id" to get its ID //state: "block" or "none", depending on state } animatedcollapse.init()         WELCOME TEACHERS! The Alaska SeaLife Center and COSEE-Alaska are excited to present the second in a series of virtual field trips. Meltdown is a virtual field trip (VFT) designed to immerse students in the important field of polar research as they learn about how a changing climate is impacting sea ice ecosystems in the Arctic. Educators and scientists from across Alaska have teamed up to bring you this new and innovative teaching tool. Meltdown takes students on an Arctic expedition where they'll connect with researchers studying the marine foodweb in the Bering Sea. Throughout this exploration, students will watch videos, examine images, and piece together foodwebs as they follow Dr. Rolf Gradinger and his team of real-life scientists out onto the ice. OVERVIEW FOR TEACHERS This VFT can be used in a number of ways. Teachers may facilitate a structured experience using the curriculum supplements included on this page. Alternatively, individuals may choose to navigate through the pages on their own, learning about sea ice ecosystems and why changes in arctic climate have scientists concerned. Self-guided exploration can be completed in about an hour.  GRADE LEVEL: 5th-8th TIME NEEDED:  One to eight 1-hour class periods (teachers may choose to use all or some of the supplementary lessons- see teachers guide for details). NUTSHELL: Students will learn about the role of sea ice in the Arctic ecosystem while studying the Bering Sea food web. LEARNING OBJECTIVES: After completing this virtual field trip, students will be able to: - Illustrate how changes in the population of one species may affect population dynamics throughout a food web. - Differentiate between the physical properties of sea ice and freshwater ice and justify the reason for these differences. - Describe the conditions necessary for sea ice algae to grow and explain the role of sea ice algae to the Bering Sea in spring. BACKGROUND: At the Northern fringe of the Pacific Ocean, along the United States’ most remote boundary, lies the Bering Sea. Covering an area more than three times the size of Texas (nearly 900,000 sq. mi.), and supporting some of the most valuable fisheries in the world, the Bering Sea’s remote waters have attracted explorers for thousands of years. Now your students can join in the process of discovery as they accompany modern-day explorers onto the ice! In this virtual field trip, students will meet Dr. Rolf Gradinger, a Sea Ice Biologist conducting research in the Bering Sea. They will follow his research team into the field as they work to answer the question 'What does sea ice mean to the Bering Sea ecosystem?' and 'What would it mean if arctic sea ice were to disappear as a result of climate change?' Their quest for answers leads the researchers to look under the ice, where they'll investigate the role of sea ice algae (tiny marine plants that grow on the bottom surface of sea ice during the spring) in the spring Bering Sea foodweb. As your class navigates through this field trip they'll be introduced to the process of science: from initial questions, through development of hypotheses, data collection and, finally, data analysis. Watch as an unfamiliar world unfolds, revealing a complex spring foodweb all stemming from the sea ice algae. The research of Drs. Rolf Gradinger, Katrin Iken and Bodil Bluhm inspired this virtual field trip. Join us as we explore how climate change may impact one of the world's most productive marine ecosystems, the Bering Sea. We also recommend listening to Encounters Radio: Ice Algae, a recorded interview in which host Elizabeth Arnold interviews Rolf Gradinger about this research project. (10 minutes) TO USE THIS VIRTUAL FIELD TRIP YOU WILL NEED: - Internet access, video-streaming capabilities - Access to Meltdown the virtual field trip - Projection system (with audio) to display VFT content or a computer lab (with headphones) - Teacher's guide and corresponding curriculum supplements (arranged as PDFs in the right hand column of this page) UNABLE TO RUN THE STREAMING VERSION? REQUEST A COPY OF ALL MATERIALS ON CD BY EMAIL: education@alaskasealife.org SPECIAL NOTES FOR TEACHERS: Guide to State & National Standards addressed in this field trip (Click to download .pdf) Using Curriculum Supplements We encourage teachers to read through all Curriculum Supplements before beginning Meltdown with your students.  Some projects, like the invertebrate research project, will be completed over the course of several sections.  Videos and weblinks Many sections of Meltdown include embedded videos and weblinks.  All weblinks require internet access.  In the CD version of the virtual field trip, all videos will play without internet, unless noted.  In the online version of Meltdown, all videos will stream from YouTube.  Each video is less than 3 minutes long (exact durations can be found in the description below each video).  Video transcripts are available for each video and can be accessed by clicking the ‘Video Transcript’ button below each clip.  Vocabulary Important vocabulary terms are included in the VOCABULARY box in the lower right-hand corner of each section.  A complete glossary of terms is included as a .pdf in the FOR TEACHERS section.  Age appropriateness This virtual field trip is designed to meet Alaska state and National science content standards for students in grades 5-8.  We understand that students in grades 5-8 may display a variety of skill sets and reading levels, therefore this grade distinction is designed only as a guideline.  The scientific process discussed in this virtual field trip is appropriate for and may be enjoyed by older students as well.  Older students may progress through this virtual field trip at a faster rate than that outlined above.  ADDITIONAL RESOURCES: Resources for Invertebrate Research Project: OCEANUS: Arctic Ecosystem Interactive Arctic Ocean Diversity Project: Species Info ARKive: Marine Invertebrates Info General information about Sea Ice: National Snow and Ice Data Center NASA Earth Observatory: Sea Ice International Polar Year: Sea Ice Fact Sheet Resources highlighting Bering Sea & Arctic Ocean research and education: BEST-BSIERP-Bering Sea Project Bering Sea Project: Profile on Sea Ice Arctic Ocean Diversity Project Education Resources Related to Climate Change: NOAA Education Resources: Climate Change Impacts Contact Us: If you have any questions about this virtual field trip, please contact the Alaska SeaLife Center Education Department at education@alaskasealife.org or 907-224-6306. For more information on classes we offer, including our inquiry-based 50-minute Distance Learning programs, visit our website at www.alaskasealife.org.         CURRICULUM SUPPLEMENTS Use the .pdf links below to access classroom activities for each section of the MELTDOWN virtual field trip. Teachers Guide.pdf Introduction_Activities.pdf Background_Activities.pdf Questions_Activities.pdf Plan_Activities.pdf Action_Activities.pdf Results_Activities.pdf Glossary.pdf        

  animatedcollapse.addDiv('A', 'fade=1') animatedcollapse.ontoggle=function($, divobj, state){ //fires each time a DIV is expanded/contracted //$: Access to jQuery //divobj: DOM reference to DIV being expanded/ collapsed. Use "divobj.id" to get its ID //state: "block" or "none", depending on state } animatedcollapse.init() animatedcollapse.addDiv('B', 'fade=1') animatedcollapse.ontoggle=function($, divobj, state){ //fires each time a DIV is expanded/contracted //$: Access to jQuery //divobj: DOM reference to DIV being expanded/ collapsed. Use "divobj.id" to get its ID //state: "block" or "none", depending on state } animatedcollapse.init()         Eiders are sea ducks, which means that they live in coastal areas where they dabble for small invertebrates or dive for crustaceans and molluscs. Steller's eiders nest on the arctic and subarctic tundra. These birds are sexually dimorphic, so males generally look very different from females. Click on the images below to discover the advantages of different colors on the tundra: Steller's eiders are migratory and winter comes early on the Alaskan tundra. Before ice covers the ponds and coastal waters near the Steller's beeding grounds, the birds must travel south to areas where the coast doesn't freeze over, allowing them to access food resources in the ocean. Watch the video to learn where the Steller's eiders of Alaska travel throughout the year. VIDEO: Annual Cycle of Steller's Eiders in Alaska Discover the life history of Steller's eiders in Alaska. (2:44) Video Transcript In Alaska, Steller’s eiders spend the winter on the coast along the Aleutian Islands, the Alaska Peninsula, and the Kodiak Archipelago. As spring arrives, the birds wait for the sea ice to melt along their migratory paths. Before they migrate, the males begin to dance. All efforts are geared toward finding a mate. Then, the Steller’s eiders that winter in Alaska diverge into two separate breeding populations. Most of them fly northwest to breed and nest in Russia. Others fly north to breed and nest near Barrow, Alaska. These birds comprise the Alaskan breeding population. Historically, Steller’s eiders also nested on the Yukon-Kuskokwim, or Y-K Delta. Now Steller’s eiders are a rare sight on the Y-K Delta, and very few Steller’s nests have been discovered there in the past several decades. In late May or early June the Steller’s Eiders reach their breeding grounds on the arctic tundra. By late June the hens are ready to make a nest on the tundra in close proximity to tundra ponds. The males stay around to guard while the females construct elaborate grass nests lined with cozy down feathers. The end result is so well camouflaged that it virtually disappears into the tundra. By early July the Steller’s hens will lay up to 9 olive-brown eggs. While the females tend to their eggs, the males leave to travel south and return to their molting grounds. Adult eiders molt their flight feathers once each year, leaving them unable to fly for about a month as they grow new feathers. Males travel to protected bays and lagoons to molt before continuing on to their wintering sites. Meanwhile, on the tundra the hens incubate their eggs up to 26 days before the ducklings hatch. Within 24 hours of hatching the ducklings leave the nest to follow their mother around the coastal tundra. In 5 to 7 weeks the young birds are able to fly. Fall will soon give way to winter, so the mothers and their young must fly south to the molting and wintering grounds. The females reunite with the males and with the breeding population that spent its summer in Russia. And the annual cycle of the Steller’s eiders begins again. Every species of bird has different requirements for successful nesting but, with so few of these birds in the wild and so little known about them, how will researchers know what Steller's eiders need? In captivity, these birds won’t have to worry about predators or the challenges of migration. But will the scientists be able to provide them with requirements they need to nest and raise ducklings hundreds of miles away from the tundra?       CLICK BELOW TO LEARN ABOUT SEADUCK SCIENTISTS!   CAMOUFLAGE (n) - concealment that alters or obscures the appearance; helps an organism to hide from its predators.   FORAGE (v) - to search for and collect food.   INCUBATE (v) - to keep an egg or organism at an appropriate temperature for it to develop.   IRIDESCENT (adj) - shining with many different colors when seen from different angles.   LIFE HISTORY (n) - the series of changes a living thing goes through during its lifetime.   MIGRATION (n) - seasonal movement from one area to another.   MOLT (v) - to lose a covering of hair, feathers, etc., and replace it with new growth.   PLUMAGE (n) - the feathers that cover the body of a bird.   SEXUAL DIMORPHISM (n) - when the male and female of the same species look distinctly different from one another.  

  animatedcollapse.addDiv('A', 'fade=1') animatedcollapse.ontoggle=function($, divobj, state){ //fires each time a DIV is expanded/contracted //$: Access to jQuery //divobj: DOM reference to DIV being expanded/ collapsed. Use "divobj.id" to get its ID //state: "block" or "none", depending on state } animatedcollapse.init() animatedcollapse.addDiv('B', 'fade=1') animatedcollapse.ontoggle=function($, divobj, state){ //fires each time a DIV is expanded/contracted //$: Access to jQuery //divobj: DOM reference to DIV being expanded/ collapsed. Use "divobj.id" to get its ID //state: "block" or "none", depending on state } animatedcollapse.init()         Every step is an act of balance in a vast land full of ponds, rivers, and streams where more than half the landscape is water. There are no roads and your tent could be the highest point on the horizon. Trekking though the swampy tundra of the Yukon-Kuskokwim Delta (Y-K Delta), scientists are on the lookout for nests. Counting every species they encounter, one bird eludes them all: the Steller's eider. This mysterious bird is a rare sight for researchers across Alaska. Surprisingly, one of the best places to observe these birds in Alaska is at a facility that is located hundreds of miles from their natural habitat. Watch the video for a glimpse into the strange lengths that scientists are going to in order to learn as much as possible about the elusive Steller's eider. Can you guess what the researchers are doing - and why? VIDEO: Mystery on the Tundra Scientists are going out of their way to learn more about Steller's eiders. (1:34) Why are scientists going to such great extents to learn more about the Steller’s eider? The number of Steller's eiders in the wild are declining. While two breeding populations exist in northern Russia, the breeding population of Steller’s eiders in Alaska has all but vanished and is now classified as Threatened under the Endangered Species Act. No one knows why these birds started disappearing in the 1970's. Scientists have proposed a few possible explanations, such as lead poisoning from ingestion of spent lead shot; increased predation from gulls, foxes and ravens; and changes in the coastal environment. As temperatures warm and sea levels rise near the eiders' preferred habitats, will the few remaining pairs of birds continue to be successful nesting in Alaska? Concerned for the Alaskan population, scientists collected Steller’s eider eggs from Barrow, Alaska in an effort to prevent a complete disappearance of breeding eiders. With these eggs, the scientists have created a captive-breeding “reservoir” population. This breeding population resides at the Alaska SeaLife Center in Seward, Alaska, where researchers and aviculturists have the skills to keep the birds healthy while they learn more about this rare species. VIDEO: Introduction to the Research Project Dr. Tuula Hollmen describes the Steller's eider research project and its overall goals. (1:51) Video Transcript My name is Tuula Hollmen and I am a research professor at University of Alaska Fairbanks and a scientist at the SeaLife Center. I have been working with birds for, I think it is over 25 years now. The main goal of the eider research program is to help support the recovery of eiders in Alaska and the main focus of the program at the SeaLife Center facility right now is the captive breeding program. One of the main goals of having the eiders here is to help buffer the species against extinction. We are also collecting a lot of data throughout the year to help learn more about the basic biology and physiology of the species. The third big goal for that program is to develop captive breeding techniques for Steller’s eiders with the potential that those methods that we develop could be used in the future in a field program to help augment or reestablish a population by using reintroduction as a tool. The Steller’s eider is a unique arctic species. It is the only species in its genus, Polysticta. There is no other Polysticta species. So if we lose the Steller’s eider we lose not just a species but a genus. I think that everything that I have been learning about the species just makes me more convinced that they are a unique species. I think the world will be a different place if we lose this unique species that is not necessarily similar to any other species. Dr. Tuula Hollmen has been studying Steller's eiders at the Alaska SeaLife Center since 2001. Her project allows scientists to keep their eyes on eiders, to observe and learn about a bird rarely seen nesting in the wild.       CLICK BELOW TO LEARN ABOUT SEADUCK SCIENTISTS!   AVICULTURE (n) - the raising and care of birds (especially wild birds) in captivity.   ENDANGERED SPECIES ACT (n) - signed on December 28, 1973, this act provides for the conservation of species that are endangered or threatened throughout all or a significant portion of their range, and the conservation of the ecosystems on which they depend.   ECOSYSTEM (n) - a system formed by the interaction of a community of organisms with their environment.   INGEST (v) - to take something into your body (such as food).   LEAD SHOT (n) - small pellets of lead that are shot from a shotgun; used for hunting birds and small game.   PHYSIOLOGY (n) - the way in which a living organism or bodily part functions.   RESERVOIR (n) - an extra supply of a resource to be used when needed.   SPECIES (n) - a group of animals or plants that are similar and can produce young.   THREATENED SPECIES (n) - any species that is likely to become an endangered species within the foreseeable future.   TUNDRA (n) - a flat or rolling treeless plain that is characteristic of arctic and subarctic regions; subsoil is permanently frozen and dominant vegetation consists of mosses, lichens, herbs, and dwarf shrubs.