All research starts with one or more questions. Dr. Tuula Hollmen and her team are tackling a broad question: What do Steller’s eiders need to breed successfully? The team isn't going to find the answer just by looking in a textbook. Steller’s eiders are unique. Little is known about their needs and they don’t follow the same breeding behaviors of other well-studied waterfowl like domestic ducks. So, why is Dr. Hollmen interested in this particular question when it comes to eiders?
VIDEO: STELLER'S EIDERS RESEARCH QUESTIONS
Dr. Tuula Hollmen discusses the factors that led to her research questions and how she plans to investigate those questions. (1:46)
The eider is a long-lived species that has a high adult survival but very variable and potentially low annual productivity or reproductive success. And it works because the species lives a long time, so each individual can have a really long reproductive career, and they don’t have to be successful every year, because they have (in eider’s case) they potentially have at least 15 years to breed.
Reproductive success is really one of the key questions for the recovery. If that continues to be low or doesn’t reach some certain threshold, recovery will either not happen or take a really long time. But if they can increase productivity then we might see recovery.
I would like to ask the question: what does an eider need to breed successfully? We have a suite of sub questions: What makes an eider pairing successful? What kinds of nests are successful? How do you set the incubation conditions for successful hatching? So those are sub-questions.
So when we set up to answer the question in our program here, we think about all these factors that the eiders are faced with in the wild and we transfer that to our own virtual reality that we are creating here. The habitat is not the natural habitat, but we are learning from the wild birds as to what are the key features of their habitat that they need to go through all the different steps of the reproductive cycle. So we would try to mimic the available nest sites, the privacy, the ponds, the water quality, all those kinds of things to the best we can and match them to the natural environment.
Dr. Hollmen has to think about how to convert the complex, wild system that the eiders come from into a virtual habitat at the Alaska SeaLife Center so that her team can learn from the captive reservoir population. With little existing research, a small wild population in Barrow, sporadic nesting on the Y-K Delta, and hundreds of variables, how will the scientists figure out what a pair of Steller’s eider needs to breed successfully? Here’s the benefit of science: they can try out different materials and techniques (experimentation!) and use careful observation to figure out a strategy that works for the captive eiders.
The research question cannot be answered in one year. Every breeding season tests if the scientists’ current arrangement helps the birds breed successfully. Scientific inquiry is a process, and the eider team knows it well as they continue to learn, question, and adapt. It's what they've been doing for over a decade!
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ADAPT (n) - to change behaviors or physical traits to survive in a specific environment.
BROOD (n) - the offspring of an animal, especially of a bird.
BROOD (v) - to sit on eggs to hatch them.
EXPERIMENT (v) - to do a scientific test in which you perform a series of actions and carefully observe their effects.
INQUIRY (n) - an act of asking or searching for information.
THRESHOLD (n) - a level, point, or value above which something is true or will take place.
VARIABLE (n) - an element, feature, or factor that can vary or change.
VIRTUAL (adj) - very close to being something without actually being it.
