EARLY HEARING DETECTION AND INTERVENTION VIRTUAL CONFERENCE
MARCH 2-5, 2021
(Virtually the same conference, without elevators, airplane tickets, or hotel room keys)
6/05/2017 | 9:15 AM - 9:30 AM | ARE THE EFFECTS OF SUBSIDIES AT THE FRESWHATER-TERRESTRIAL BOUNDARY CONSISTENT ACROSS MULTIPLE ECOSYSTEM BOUNDARIES? | 301A
ARE THE EFFECTS OF SUBSIDIES AT THE FRESWHATER-TERRESTRIAL BOUNDARY CONSISTENT ACROSS MULTIPLE ECOSYSTEM BOUNDARIES?
One way that stressors affect aquatic-terrestrial linkages is by disrupting the amount of resources and consumers that cross the aquatic-terrestrial boundary. Freshwater ecologists have recognized the importance of these linkages for decades, making the freshwater-terrestrial boundary a potential model system for the study of cross-ecosystem linkages in general. To understand whether the effects of subsidies and consumer fluxes at the freshwater-terrestrial interface are similar in direction and strength at other ecosystem boundaries, we conducted a meta-analysis of 1426 observations from 166 studies. At the freshwater-terrestrial boundary, resource subsidies increased recipient consumer responses (e.g. density or growth) by ~1.5 fold, while consumer fluxes (e.g. dragonfly emergence) reduced prey responses by a similar amount. The indirect effects of these two fluxes differed, attenuating rapidly for consumer fluxes, but not for resource fluxes. Strikingly, these patterns were consistent at each of the other 5 ecosystem boundaries (e.g. marine-terrestrial, freshwater-terrestrial). Our results indicate that the continued study of the effects of stressors on aquatic-terrestrial linkages can not only yield insight into the ecology and management of freshwater-terrestrial ecosystems, but can also yield insight into the effects of stressors on ecosystems in general.
- C28 Land-Water Interfaces
- C11 Community Ecology
- S14 Stressors in linked aquatic-terrestrial ecosystems: New developments and solutions
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Presenters/Authors
Jeff Wesner
(), University of South Dakota, Jeff.Wesner@usd.edu;
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Lauren Henning
(), University of South Dakota, lauren.henning@usd.edu;
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Daniel Allen
(), University of Oklahoma, dcallen@ou.edu;
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