Skip to Main Content
Factors influencing behavior and transferability of habitat models for a benthic stream fishAuthor(s): Kevin N. Leftwich; Paul L. Angermeier; C. Andrew Dolloff
Source: Transactions of theAmerican Fisheries Society. 126: 725-734.10p.
Publication Series: Miscellaneous Publication
PDF: View PDF (181 B)
DescriptionThe authors examined the predictive power and transferability of habitat-based models by comparing associations of tangerine darter Percina aurantiaca and stream habitat at local and regional scales in North Fork Holston River (NFHR) and Little River, VA. The models correctly predicted the presence or absence of tangerine darters in NFHR for 64 percent (local model) and 78 percent (regional model) of the sampled habitat units (i.e., pools, runs, riffles). The distribution of tangerine darters apparently was influenced more by regional variables than local variables. Data from Little River and 37 historical records from VA were used to assess transferability of models developed from NFHR data. In general, the models did not transfer well to Little River; all models predicted that either no (regional model) or few (local model) habitat units in Little River would contain tangerine darter, even though the species was observed in 83 percent of the habitat units sampled. Conversely, the regional model correctly predicted presence of tangerine darters for 95 percent of the historical records. Principal components analysis showed extensive overlap in NFHR and Little River habitat, which suggests that the two streams are ecologically similar. The suitability of Little River for tangerine darters was shown more clearly by principal components analysis than by the authors' models. Because different limiting factors may apply in different systems, the elimination of potentially important ecological variables may compromise model transferability. Ahierarchical approach to habitat modeling, with regard to variable retention, may improve transferability of habitat models
- 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.
CitationLeftwich, Kevin N.; Angermeier, Paul L.; Dolloff, C. Andrew. 1997. Factors influencing behavior and transferability of habitat models for a benthic stream fish. Transactions of theAmerican Fisheries Society. 126: 725-734.10p.
- Observations of watersnake (Nerodia, Colubridae predation on Darters (Percidae)
- Conservation assessment of the Yazoo Darter (etheostoma raneyi)
- Local-Habitat, Watershed, and Biotic Features Associated with Bull Trout Occurrence in Montana Streams
XML: View XML