Stream microhabitat use by salamanders (Eurycea cirrigera and Desmognathus conanti) in the Georgia piedmont
Smith, Stacy Noelle
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I assessed non-random microhabitat use by larval and adult southern two-lined salamanders (Eurycea cirrigera) and adult spotted dusky salamanders (Desmognathus conanti) in two Georgia Piedmont streams from April 2000 to April 2001. Southern two-lined larvae were generally under-represented in deep areas with low percentages of coarse substratum and in microhabitats dominated by bedrock substrata. Spotted dusky and southern two-lined salamander adults were typically over-represented in microhabitats with higher percentages of gravel, pebble, and cobble substrata. Spotted dusky salamander capture locations were found to have greater number of invertebrates than random locations. Invertebrate distribution did not seem to affect the microdistribution of adult southern-two lined salamanders. Between stream and seasonal differences in microhabitat use for all species generally reflected differences in microhabitat availability. Consequently, anthropogenic disturbance that reduces stream complexity and the availability of coarse substratum may decrease stream salamander populations for these species in Georgia.