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Macroinvertebrate Biomonitoring in Intermittent Coastal Plain Streams Impacted by Animal Agriculture

Stephanie Davisa,c, Stephen W. Golladay*,a, George Vellidisb and Catherine M. Pringlec

a J.W. Jones Ecological Research Center, Route 2, Box 2324, Newton, GA 31770
b Dep. of Biological and Agricultural Engineering, Univ. of Georgia, Tifton, GA 31793-0748
c Institute of Ecology, Univ. of Georgia, Athens, GA 30602-2602



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  		Fig. 1. Map of Piscola Creek watershed, with study sites.

 


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  		Fig. 2. Means (+1 SE) of metrics that had large differences between the reference site and one or more of the impaired sites during the flow and intermittent flow periods.

 


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  		Fig. 3. Box plots of metrics that showed significant differences among most and least impacted sites during the flow period. Metrics were analyzed using a Kruskal–Wallis one-way analysis of variance (ANOVA) on ranks followed by multiple comparison procedure. For a given metric, boxes with different letters are significantly different (p < 0.05).

 


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  		Fig. 4. Velocity measurements at each study site. A star indicates a tropical storm or hurricane.

 




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