Skip to Main Content
Influence of fire on native and nonnative salmonid populations and habitat in a western Montana basinAuthor(s): Clint M Sestrich; Thomas E. McMahon; Michael K. Young
Source: Transactions of the American Fisheries Society. 140: 136-146.
Publication Series: Miscellaneous Publication
PDF: View PDF (411.56 KB)
DescriptionAnticipated increases in the frequency and severity of wildfire may threaten the persistence of native salmonid populations in headwater streams in western North America. This study used extensive pre- and postfire data to assess whether wildfire leads to hypothesized declines in native westslope cutthroat trout Oncorhynchus clarkii lewisi and bull trout Salvelinus confluentus populations along with increases in the prevalence and abundance of nonnative brook trout S. fontinalis. Postfire cutthroat trout density was negatively correlated with the proportion of basin area that burned at moderate to high severity, but the declines in density after fires were less pronounced for bull trout and brook trout. Recovery of cutthroat trout was generally rapid in severely affected reaches. Contrary to expectation, there was no evidence of a marked increase in abundance or invasion by brook trout after wildfire. Brook trout exhibited the most severe declines in debris flow-affected reaches among all species and exhibited less recovery in severely burned reaches than did cutthroat trout.
- You may send email to email@example.com to request a hard copy of this publication.
- (Please specify exactly which publication you are requesting and your mailing address.)
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
CitationSestrich, Clint M; McMahon, Thomas E.; Young, Michael K. 2011. Influence of fire on native and nonnative salmonid populations and habitat in a western Montana basin. Transactions of the American Fisheries Society. 140: 136-146.
Keywordsnative salmonid populations, wildfire, westslope cutthroat trout, Oncorhynchus clarkii
- Role of climate and invasive species in structuring trout distributions in the interior Columbia River Basin, USA
- Competition and predation as mechanisms for displacement of greenback cutthroat trout by brook trout
- Alien invasions in aquatic ecosystems: toward an understanding of brook trout invasions and potential impacts on inland cutthroat trout in western North America
XML: View XML