2023 Early Hearing Detection & Intervention Conference
March 5-7, 2023 • Cincinnati, OH
5/23/2019 | 10:15 AM - 10:30 AM | EFFECTS OF CLIMATE VARIABILITY IN A LONG-TERM CONTEXT ON LEAF LITTER PROCESSING IN THE OGEECHEE RIVER | 254 B
EFFECTS OF CLIMATE VARIABILITY IN A LONG-TERM CONTEXT ON LEAF LITTER PROCESSING IN THE OGEECHEE RIVER
Leaf litter decomposition (LLD) in stream ecosystems is an important component of the energy and nutrient cycle, representing an important process in the stream and a food source for aquatic organisms. This has made LLD a useful tool for assessing long term responses to disturbance. The Intergovernmental Panel for Climate Change (IPCC) predicts a rise in temperatures and changes to precipitation patterns for the 21st century. Specifically, for the southeast region, a higher frequency of drought and floods is predicted. My objective is to use long-term data (6 years of LLD data from the same site) to evaluate and predict the potential effects of climate variability on the leaf decomposition process and the invertebrate community associated with it. Preliminary results from 2012, a year following an extensive drought (>1 yr), versus subsequent years, reveal a higher rate of decomposition, insect abundance and diversity, and a shift to a majority scraper functional feeding group in comparison to a majority collector-gatherers from consequent years. This suggests changes in the availability and contribution of basal resources that may result in a shift in trophic structure.
- Invertebrate
- Decomposition
- ClimateChange
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Presenters/Authors
Jose Sanchez-Ruiz
(), Montana State University, jas091988@gmail.com;
ASHA DISCLOSURE:
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Checo Colon-Gaud
(), Georgia Southern University, jccolongaud@georgiasouthern.edu;
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