2023 Early Hearing Detection & Intervention Conference
March 5-7, 2023 • Cincinnati, OH
6/08/2017 | 12:00 PM - 12:15 PM | INVERTEBRATE RESISTANCE/RESILIENCE MECHANISMS IN AN INTERMITTENT STREAM AMONG YEARS WITH VARYING HYDROPERIODS | 302C
INVERTEBRATE RESISTANCE/RESILIENCE MECHANISMS IN AN INTERMITTENT STREAM AMONG YEARS WITH VARYING HYDROPERIODS
In the southeastern US, more variable precipitation, warming, and human water demand are causing water deficits and a trend towards intermittency in streams. Following the end of a severe drought in the lower Flint River, Georgia, we examined mechanisms of invertebrate resistance/resilience in an intermittent stream during a year with multiple flow periods and a year with an average winter-spring flow. While richness and total abundance did not differ significantly, shifts were seen in the dominant taxa between years. Higher abundances of Simuliidae and a greater dominance of non-tanypodinae characterized the multi-flow year compared to a higher abundance of Isopoda and Baetidae in the average flow year. This suggest that the multiple flow periods favored rapid colonizers over those taxa that normally persist in refugia during average years. Variations in the hydroperiod will inherently favor taxa with certain traits over others and over time could alter assemblage composition of streams within the watershed. Awareness of biological responses will be increasingly important for regional water planning and conservation efforts to minimize the effects of changing climate and human demand.
- C03 Invertebrates
- C22 Disturbance
- C11 Community Ecology
Presentation:
This presentation has not yet been uploaded.
Handouts:
Handout is not Available
Transcripts:
CART transcripts are NOT YET available, but will be posted shortly after the conference
Presenters/Authors
Chelsea Smith
(), The Jones Center at Ichauway, chelsea.smith@jonesctr.org;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
Nicholas Marzolf
(), J.W. Jones Ecological Research Center, nmarzolf@jonesctr.org;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
Stephen Golladay
(), The Jones Center at Ichauway, steve.golladay@jonesctr.org;
ASHA DISCLOSURE:
Financial -
Nonfinancial -