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Key Dates

Abstract Submittal Deadline
31 January 2013

Late Registration
Fees Imposed

Beginning 16 April 2013

Program and Schedules Available
Late March 2013

Meeting
19-23 May 2013

Robillard, K. J., Georgia Southern University- Biology Department, Statesboro, USA, kr02996@georgiasouthern.edu
Vives, S. P., Georgia Southern University- Biology Department, Statesboro, USA, svives@georgiasouthern.edu
Colon-Gaud, J. C., Georgia Southern University- Biology Department, Statesboro, USA, jccolongaud@georgiasouthern.edu

ASSESSMENT OF FISH ASSEMBLAGE UTILIZATION OF FLOODPLAIN HABITAT THROUGHOUT FLOOD PULSE EVENT IN GEORGIA’S ALTAMAHA RIVER

Inundated floodplains provide vital feeding and spawning habitats to many river-dwelling fishes. During seasonal flooding, fish community composition is predicted to change in response to changing hydrology and consequent changes in water quality. Furthermore, as flood waters recede, many fish using this habitat return to the main channel where they enter the river food web. To assess the effects of seasonal flooding on fish communities, we studied fish assemblages in a floodplain of the Altamaha River throughout the 2012-2013 flood pulse by means of backpack electrofishing and dipnetting. Abundance, richness, diversity, and catch per unit effort (CPUE) were evaluated over different flood stages (pre-, peak-, and post-flood). Preliminary results indicate a pre-flood assemblage dominated by Centrarchids (8 of 20 total species) and relative abundance (73%). Of these, Lepomis macrochirus was the dominant species, accounting for >64% of individuals. Understanding the importance of floodplain access to fish communities is necessary to inform water management practices, especially as weather extremes (e.g., droughts and floods) are forecast to increase with a changing climate.

Poster presentation

Session #:T15
Date: 5/22/2013

Presentation is given by student: Yes

Presenting authors are bolded.