2022 Early Hearing Detection & Intervention Virtual Conference
March 13 - 15, 2022
5/26/2021 | 8:30 AM - 10:30 AM | CLIMATE-DRIVEN VARIATION IN A SOUTHERN APPALACHIAN STREAM INVERTEBRATE COMMUNITY DIFFERS BY HABITAT TYPE | Virtual Platform
CLIMATE-DRIVEN VARIATION IN A SOUTHERN APPALACHIAN STREAM INVERTEBRATE COMMUNITY DIFFERS BY HABITAT TYPE
Long-term data can provide insights into how stream populations and communities respond to climate change, driven by both gradual changes and extreme events in hydrologic and thermal regimes. These master variables define the physical environment and control biological activity in streams. Thus, responses of communities to such variables can help inform conservation and management. Using a long-term (13-yr) data set of monthly invertebrate abundance and biomass in a southern Appalachian stream, we quantified changes in community structure and explored whether observed differences were associated with variation in discharge and temperature. Further, we assessed whether habitat type (rock-face vs. cobble) mediates response to climate variables. Initial analyses suggest that changes in cobble community structure were not related to any climate variables that we tested, despite periods of historically intense drought and rainfall during the study. Changes in rock-face community structure were correlated with total annual precipitation and the mean annual minimum discharge. Our results suggest that habitat type mediates responses to climate variation and that invertebrate communities in the dominant cobble habitat of small forest streams are relatively robust to historical variation in discharge and temperature over the 13-yr period.
- Climate variability
- Flow
- Species interactions
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Presenters/Authors
Phillip Bumpers
(), Odum School of Ecology, University of Georgia, bumpersp@gmail.com;
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Seth Wenger
(), Odum School of Ecology, University of Georgia, swenger@uga.edu;
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Amy Rosemond
(), University of Georgia, rosemond@uga.edu;
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Jonathan P. Benstead
(), The University of Alabama, jbenstead@ua.edu;
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Mary Freeman
(), US Geological Survey, mcfreeman@usgs.gov;
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Sue Eggert
(), USDA Forest Service, Northern Research Station, seggert@fs.fed.us;
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J. Bruce Wallace
(), Dept. Entomology and Odum School of Ecology, University of Georgia, bwallace@uga.edu;
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