2023 Early Hearing Detection & Intervention Conference
March 5-7, 2023 • Cincinnati, OH
6/08/2017 | 12:00 PM - 12:15 PM | COUPLING OF ASYNCHRONOUS ENERGY CHANNELS IN SPATIALLY COMPLEX META-FOOD WEBS: TESTING GENERAL THEORY IN RIVERS AND THEIR FLOODPLAINS | 306B
COUPLING OF ASYNCHRONOUS ENERGY CHANNELS IN SPATIALLY COMPLEX META-FOOD WEBS: TESTING GENERAL THEORY IN RIVERS AND THEIR FLOODPLAINS
The science of streams and rivers possesses untapped potential to empirically test general ecological theory. One avenue is evaluating theoretical expectations that certain characteristics of food web complexity promote stability and biodiversity, with the added layer that spatial heterogeneity may facilitate the emergence of such characteristics at meta-food web scales. Recent river and river-floodplain studies have empirically shown that increasing food web complexity and spatial heterogeneity may mediate patterns associated with theoretically stable food webs, such as shifting the distribution of predator-prey interaction strengths toward weaker interactions. However, the mechanisms by which food web patterns and processes thought to impart stability operate in spatially complex and naturally biodiverse ecosystems are poorly understood. We review here theory regarding these relationships, focusing on the role of detrital subsidies and the coupling of asynchronous “fast” and “slow” energy channels in spatially heterogeneous meta-food webs, illustrating why, and proposing a novel approach as to how, river-floodplains may be used to confront this body of theory. Overall, our goal is to spur investigations in rivers and streams that reconcile general theory with empirical observation.
- C11 Community Ecology
- C06 Large River Ecology
- C25 Food Webs
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Presenters/Authors
James Paris
(), Stream Ecology Center, Dept. Biological Sciences, Idaho State University, parijame@isu.edu;
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Colden Baxter
(), Idaho State University, baxtcold@isu.edu;
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J. Ryan Bellmore
(), Forest Service, Pacific Northwest Research Station, Juneau, AK, jbellmore@fs.fed.us;
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