<?xml version='1.0' encoding='utf-8'?>
<oai_dc:dc xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
  <dc:contributor>Stephen T. Ross</dc:contributor>
  <dc:creator>Pamela J. Schofield</dc:creator>
  <dc:date>2003</dc:date>
  <dc:description>&lt;p&gt;&lt;i&gt;Percina (Cottogaster) aurora&lt;/i&gt;&lt;span&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;is an imperiled species under consideration for listing by the U.S. Fish and Wildlife Service. To better understand habitat use of&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;/span&gt;&lt;i&gt;P. aurora&lt;/i&gt;&lt;span&gt;, we studied a related and more abundant&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;/span&gt;&lt;i&gt;Cottogaster&lt;/i&gt;&lt;span&gt;species,&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;/span&gt;&lt;i&gt;Percina copelandi&lt;/i&gt;&lt;span&gt;, 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&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;/span&gt;&lt;i&gt;P. copelandi&lt;/i&gt;&lt;span&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;over three temperature regimes (summer, spring, and winter).&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;/span&gt;&lt;i&gt;Percina copelandi&lt;/i&gt;&lt;span&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;selected pool habitats over riffles and selected pools with coarse substrata (&lt;/span&gt;&lt;i&gt;e.g.&lt;/i&gt;&lt;span&gt;, cobble) over fine substrata (&lt;/span&gt;&lt;i&gt;e.g.&lt;/i&gt;&lt;span&gt;, gravel). In riffles,&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;/span&gt;&lt;i&gt;P. copelandi&lt;/i&gt;&lt;span&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;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 These data, and various published and unpublished field data for&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;/span&gt;&lt;i&gt;P. aurora&lt;/i&gt;&lt;span&gt;, suggest that habitat use of&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;/span&gt;&lt;i&gt;P. aurora&lt;/i&gt;&lt;span&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;is also centered around deep runs and pools, with large substrata likely being more important at low water temperatures.&lt;/span&gt;&lt;/p&gt;</dc:description>
  <dc:format>application/pdf</dc:format>
  <dc:identifier>10.1080/02705060.2003.9664491</dc:identifier>
  <dc:language>en</dc:language>
  <dc:publisher>Taylor and Francis</dc:publisher>
  <dc:title>Habitat selection of the channel darter, Percina (Cottogaster) copelandi, a surrogate for the imperiled pearl darter, Percina aurora</dc:title>
  <dc:type>article</dc:type>
</oai_dc:dc>