| Abstract: | Percina (Cottogaster) aurora is an imperiled species under consideration for listing by the U.S. Fish and Wildlife Service. To better understand habitat Use of P. aurora, we studied a related and more abundant Cottogaster species, Percina copelandi, from the Ouachita River, Arkansas. We used a laboratory stream system to examine mesohabitat selection (pools versus riffles) and microhabitat selection (substratum particle size) of P. copelandi over three temperature regimes (summer, spring, and winter). Percina copelandi selected pool habitats over riffles and selected pools with coarse substrata (e.g., cobble) over free substrata (e.g., gravel). In riffles, P. copelandi selected large substrata during winter and spring but did not show particle size selection during summer. These data, and various published and unpublished field data for P. aurora, suggest that habitat use of P. aurora is also centered around deep runs and pools, with large substrata likely being more important at low water temperatures. |
| Genre: | Article |
| ProdID: | 70025410 |
| Citation Author: | Schofield, P. J.; Ross, S. T. |
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| Citation End Page: | 257 |
| Citation Issue: | 2 |
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| Citation Language: | English |
| Citation Larger Work Title: | Journal of Freshwater Ecology |
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| Citation Number Of Pages: | 9 |
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| Citation Search Results Text: | Habitat selection of the channel darter, Percina (Cottogaster) copelandi, a surrogate for the imperiled pearl darter, Percina aurora; 2003; Article; Journal; Journal of Freshwater Ecology; Schofield, P. J.; Ross, S. T. |
| Citation Start Page: | 249 |
| Citation Volume: | 18 |
| Citation Year: | 2003 |
| Type: | citation/reference |
| Text: | Habitat selection of the channel darter, Percina (Cottogaster) copelandi, a surrogate for the imperiled pearl darter, Percina aurora; 2003; Article; Journal; Journal of Freshwater Ecology; Schofield, P. J.; Ross, S. T. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Wed, 1 Jan 2003 00:00 -0600 |
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