2023 Early Hearing Detection & Intervention Conference
March 5-7, 2023 • Cincinnati, OH
6/05/2017 | 9:30 AM - 9:45 AM | CAN WE RELATE TERRESTRIAL-AQUATIC LINKAGES TO HYDROPOWER FLOWS DOWNSTREAM OF A LARGE DAM? | 301A
CAN WE RELATE TERRESTRIAL-AQUATIC LINKAGES TO HYDROPOWER FLOWS DOWNSTREAM OF A LARGE DAM?
The importance of ecological subsidies of energy, nutrients, organism, and other resources from streams and rivers to adjacent terrestrial ecosystems is now well recognized in ecology. However, the extent to which the magnitude and ecological importance of these subsidies are affected by a broad array of anthropogenic activities is only beginning to be understood. In this presentation, we will discuss results from the first year of studying aquatic-terrestrial linkages in the iconic Colorado River ecosystem downstream of Glen Canyon Dam, in Arizona, USA. The goal of this project is to understand whether flow variation due to hydropower generation, which affects local aquatic invertebrate production, propagates out of the river ecosystem and also controls the distribution and production of terrestrial consumers. Specifically, we will address the extent to which terrestrial consumers in river reaches with contrasting levels of diel varial zone water stage fluctuations rely more or less extensively on aquatic invertebrate resources, based on abundance, species richness, and stable isotope-based trophic relationships of terrestrial arthropods.
- C28 Land-Water Interfaces
- C25 Food Webs
- S14 Stressors in linked aquatic-terrestrial ecosystems: New developments and solutions
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Presenters/Authors
Jeffrey Muehlbauer
(), USGS Grand Canyon Monitoring and Research Center, jmuehlbauer@usgs.gov;
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Thomas Quigley
(), USGS Grand Canyon Monitoring and Research Center, tquigley@usgs.gov;
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Ted Kennedy
(), USGS Southwest Biological Science Center, Grand Canyon Monitoring and Research Center, tkennedy@usgs.gov;
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