Navigate

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

Vickers, D. M., Georgia Southern University, Statesboro, USA, dvickers23@gmail.com
Mullis, D. , Georgia Southern University, Statesboro, USA, dm02767@georgiasouthern.edu
Colon-Gaud, C. , Georgia Southern University, Statesboro, USA, jccolongaud@georgiasouthern.edu

MACROINVERTEBRATES ASSOCIATED WITH BEAVER DAMS IN A SOUTHEASTERN COASTAL PLAIN RIVER SYSTEM

Beaver dams are known to produce changes in stream physical habitat that result in changes in water flow, organic matter standing stocks, and consumer diversity. We sampled benthic macroinvertebrate communities and organic matter standing stocks in three sites along the Ohoopee River (2 impacted with dams and 1 control) to assess the effects of beaver dams on consumer community structure. At impacted sites (i.e., with beaver dams), two separate habitats were studied; the sedentary slough immediately upstream of the dam, and the flowing area immediately downstream of the dam. Four benthic core samples were retrieved, and water parameters measured at each site seasonally (i.e., Summer, Fall, Winter). Organic matter standing stocks were found to be consistently higher above beaver impoundments suggesting that restricted water flow influences rates of material transport. Based on abundance and biomass shredders were determined to be the dominant feeding group in upstream habitats, while collector/gatherers dominated the downstream habitat. Differences in macroinvertebrate feeding group biomass and abundance suggest that influences of water flow on material transport may also influence consumer functional composition.

Poster presentation

Session #:S11
Date: 5/22/2013

Presentation is given by student: Yes

Presenting authors are bolded.