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Identifying Habitat Linkages for American Black Bears in North Carolina, USA

Identifieur interne : 000B49 ( Istex/Corpus ); précédent : 000B48; suivant : 000B50

Identifying Habitat Linkages for American Black Bears in North Carolina, USA

Auteurs : Jason L. Kindall ; Frank T. Van Manen

Source :

RBID : ISTEX:2F02E303754EE26906A31D6F621F2AEDB73A3D75

English descriptors

Abstract

ABSTRACT Understanding landscape structure and the role of habitat linkages is important to managing wildlife populations in fragmented landscapes. We present a data‐based method for identifying local‐ and regional‐scale habitat linkages for American black bears (Ursus americanus) on the Albemarle‐Pamlico Peninsula of North Carolina, USA. We used weights‐of‐evidence, a discrete multivariate technique for combining spatial data, to make predictions about bear habitat use from 1,771 telemetry locations on 2 study areas (n = 35 bears). The model included 3 variables measured at a 0.2‐km2 scale: forest cohesion, forest diversity, and forest‐agriculture edge density, adequately describing important habitat characteristics for bears on our study area. We used 2 categories of unique habitat conditions to delineate favorable bear habitat, which correctly classified 79.5% of the bear locations in a 10‐fold model validation. Forest cohesion and forest‐agriculture edge density were the most powerful predictors of black bear habitat use. We used predicted probabilities of bear occurrence from the model to delineate habitat linkages among local and regional areas where bear densities were relatively high. Our models clearly identified 2 of the 3 sites previously recommended for wildlife underpasses on a new, 4‐lane highway in the study area. Our approach yielded insights into how landscape metrics can be integrated to identify linkages suitable as habitat and dispersal routes.

Url:
DOI: 10.2193/2005-709

Links to Exploration step

ISTEX:2F02E303754EE26906A31D6F621F2AEDB73A3D75

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<abstract>ABSTRACT Understanding landscape structure and the role of habitat linkages is important to managing wildlife populations in fragmented landscapes. We present a data‐based method for identifying local‐ and regional‐scale habitat linkages for American black bears (Ursus americanus) on the Albemarle‐Pamlico Peninsula of North Carolina, USA. We used weights‐of‐evidence, a discrete multivariate technique for combining spatial data, to make predictions about bear habitat use from 1,771 telemetry locations on 2 study areas (n = 35 bears). The model included 3 variables measured at a 0.2‐km2 scale: forest cohesion, forest diversity, and forest‐agriculture edge density, adequately describing important habitat characteristics for bears on our study area. We used 2 categories of unique habitat conditions to delineate favorable bear habitat, which correctly classified 79.5% of the bear locations in a 10‐fold model validation. Forest cohesion and forest‐agriculture edge density were the most powerful predictors of black bear habitat use. We used predicted probabilities of bear occurrence from the model to delineate habitat linkages among local and regional areas where bear densities were relatively high. Our models clearly identified 2 of the 3 sites previously recommended for wildlife underpasses on a new, 4‐lane highway in the study area. Our approach yielded insights into how landscape metrics can be integrated to identify linkages suitable as habitat and dispersal routes.</abstract>
<subject lang="en">
<genre>keywords</genre>
<topic>American black bear</topic>
<topic>habitat analysis</topic>
<topic>habitat linkages</topic>
<topic>least‐cost‐path</topic>
<topic>North Carolina</topic>
<topic>transportation infrastructure</topic>
<topic>Ursus americanus</topic>
<topic>weights‐of‐evidence</topic>
</subject>
<relatedItem type="host">
<titleInfo>
<title>The Journal of Wildlife Management</title>
</titleInfo>
<genre type="journal">journal</genre>
<identifier type="ISSN">0022-541X</identifier>
<identifier type="eISSN">1937-2817</identifier>
<identifier type="DOI">10.1002/(ISSN)1937-2817</identifier>
<identifier type="PublisherID">JWMG</identifier>
<part>
<date>2007</date>
<detail type="volume">
<caption>vol.</caption>
<number>71</number>
</detail>
<detail type="issue">
<caption>no.</caption>
<number>2</number>
</detail>
<extent unit="pages">
<start>487</start>
<end>495</end>
<total>9</total>
</extent>
</part>
</relatedItem>
<identifier type="istex">2F02E303754EE26906A31D6F621F2AEDB73A3D75</identifier>
<identifier type="DOI">10.2193/2005-709</identifier>
<identifier type="ArticleID">JWMG1478</identifier>
<accessCondition type="use and reproduction" contentType="copyright">2007 The Wildlife Society</accessCondition>
<recordInfo>
<recordContentSource>WILEY</recordContentSource>
<recordOrigin>Blackwell Publishing Ltd</recordOrigin>
</recordInfo>
</mods>
</metadata>
<serie></serie>
</istex>
</record>

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