2023 Early Hearing Detection & Intervention Conference
March 5-7, 2023 • Cincinnati, OH
5/24/2021 | 2:00 PM - 3:30 PM | Climate change may affect aquatic insect subsidies emerging from streams and impact energy budgets for avian aerial insectivores | Virtual Platform
Climate change may affect aquatic insect subsidies emerging from streams and impact energy budgets for avian aerial insectivores
Aquatic insect larvae metamorphose into flying terrestrial adults that subsidize terrestrial ecosystems with energy and nutrients. The magnitude of this effect should be controlled by the quantity of insects that emerge from aquatic ecosystems, but it is not clear how climate change could impact aquatic insect emergence. Here, we modeled 1) production of emergent aquatic insects per-unit area from 92 studies and 2) surface area of streams from 2,077 measurements of wetted stream width under present-day climate and two climate scenarios for 2070. We then extrapolate these results to the nearly 2.3 million streams of the contiguous United States and explore how the quantity of emergent aquatic insects may or may not satisfy the metabolic demands of common avian aerial insectivores. Our estimates suggest that these ecosystems can export 78,197 (95% PI: 2,155 - 2.19 x 106) metric tons of insect biomass under present-day conditions, and that climate change could increase emergent biomass by 250% in some regions while decreasing it by 50% in others. Collectively, our results demonstrate that climate change effects on one ecosystem will resonate throughout other ecosystems due to cross-ecosystem linkages.
- Meta-ecosystems
- Energy flows
- Climate change
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Presenters/Authors
Darin Kopp
(), University of Oklahoma, darinkopp@gmail.com;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
Daniel Allen
(), University of Oklahoma, dcallen@ou.edu;
ASHA DISCLOSURE:
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Nonfinancial -