|Credit Nicole Rafferty|
Topic: When are biotic interactions necessary to model species distributions?
Meeting dates: February 1-4, 2013; September 23-26, 2013; May 12-16, 2014; May 11-15, 2015
One of the fundamental challenges in ecology is to predict species' geographic distributions. A strong understanding of this basic question is necessary to make predictions about the distribution of biodiversity and biosecurity threats. Though large datasets are now available to predict species distributions, existing models are limited by our poor understanding of how the distribution of one species is affected by its interactions with other organisms.
This working group will address this substantial ambiguity by formally linking ecological theory on species interactions to empirical species' distribution models. We will investigate the relative importance of species interactions and the abiotic environment at large spatial scales, determine whether omitting some species interactions (e.g. predation) produces poorer inferences than omitting other interactions (e.g. competition) and identify the conditions under which we must disentangle the effects of species interactions from dispersal and population stochasticity.
|1||Feb 1-4, 2013||Link||Link||Report|
|2||Sep 23-26, 2013||Link||Link|
|3||May 12-16, 2014||Link||Link|
|4||May 11-15, 2015||Link||Link|
Meeting 1 Summary. The stated goal of our working group is to develop an intuitive and quantitatively rich understanding of when information on species interactions is necessary to model species distributions. During our first meeting we surveyed available statistical and mathematical methods to incorporate species interactions into inferences of species' distributions, discussed potential methodological advancements, and further examined more broadly the mutual interplay of species coexistence theory and range theory, and the overlap of both these with empirical species' distributional modeling.
Meeting 2 Summary. During our second meeting, we tested scientists' ability to learn about the influence of biotic interactions on species' distributions using simulated datasets. To accomplish this, we have used relatively simple models focusing solely on species interactions and more sophisticated models that also include dispersal and environmental fluctuations. We used mathematical modeling to compare many different types of species interactions that can potentially shape species' distributions notably predation, mutualism and competition. We then applied these mathematical ideas to living species that would be difficult to study in the absence of theory, for example, to study the role of fish mediated dispersal in shaping the distribution of threatened mollusk species.
Meeting 3 Summary. During the third meeting, we tested scientists' ability to learn about the influence of biotic interactions on species' distributions using simulated datasets. Ecologists have used mathematics to study the effects of one species on another, such as predation, for decades. In the past, it has been hard to connect this work to empirical studies of species' distributions. Our most important insight: theories about species interactions that result in elimination of a species can provide powerful guidance on where a species will be present. We have used this insight to derive new mathematical results, design simulations, and review and re-interpret available theory. Our next goal is to publish important components of this work.
Meeting 4 Summary. Our working group has tested scientist's ability to learn about the influence of biotic interactions on species' distributions using simulated datasets. Ecologists have used mathematics to study the effects of one species on another, such as predation, for decades. In the past it has been hard to connect this work to empirical studies of species' distributions. Our most important insight has been that theory describing when species interactions can eliminate one species can provide powerful guidance on where a species will be present. We have used this insight to derive new mathematical results, simulate interactions, and review and re-interpret available theory.
|Meeting 1 participants. (Back row, L to R): Chris Cosner, Yetta Jager, Miguel Araujo, Fred Adler, Will Godsoe, Nat Holland, Otso Ovaskainen, Michael Bode, Bruce Kendall, Robert Holt; (Seated, L to R): Jill Jankowski, Janet Franklin, Robin Snyder, Lauren Beth Buckley. Not pictured: Jane Elith|
|Meeting 2 participants. (L to R): Robin Snyder, Chris Cosner, Jill Jankowski, Michael Bode, Janet Franklin, Robert Holt, Guillaume Blanchet, Otso Ovaskainen, Tony King, Jane Elith, Fred Adler, Bruce Kendall; (Back row): Will Godsoe, Yetta Jager; (Not Pictured): Lauren Beth Buckley|
|Meeting 3 participants: (Back, L to R) Yetta Jager, Guillaume Blanchet, Otso Ovaskainen, Chris Cosner, Robert Holt, Will Godsoe, Jill Jankowski, Bruce Kendall, Fred Adler, Tony King|
|Meeting 4 participants (L to R): Otso Ovaskainen, Jill Jankowski, Robert Holt, Anna Norberg, Dominique Gravel, Will Godsoe, Guillaume Blanchet, Yetta Jager.|
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