Authors
James R Junker, Wyatt F Cross, Jonathan P Benstead, Alexander D Huryn, James M Hood, Daniel Nelson, Gísli M Gíslason, Jón S Ólafsson
Publication date
2020/12
Journal
Ecology Letters
Volume
23
Issue
12
Pages
1809-1819
Description
Rising global temperatures are changing how energy and materials move through ecosystems, with potential consequences for the role of animals in these processes. We tested a central prediction of the metabolic scaling framework—the temperature independence of animal community production—using a series of geothermally heated streams and a comprehensive empirical analysis. We show that the apparent temperature sensitivity of animal production was consistent with theory for individuals (Epind = 0.64 vs. 0.65 eV), but strongly amplified relative to theoretical expectations for communities, both among (Epamong = 0.67 vs. 0 eV) and within (Epwithin = 1.52 vs. 0 eV) streams. After accounting for spatial and temporal variation in resources, we show that the apparent positive effect of temperature was driven by resource supply, providing strong empirical support for the temperature independence of …
Total citations
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