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231224s2011 xx |||||o 00| ||eng c |
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|a 10.1111/j.1523-1739.2011.01720.x
|2 doi
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|a eng
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|a Leidner, Allison K
|e verfasserin
|4 aut
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|a Combining measures of dispersal to identify conservation strategies in fragmented landscapes
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|c 2011
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|a Text
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|a ƒaComputermedien
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|a Date Completed 03.01.2012
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|a Date Revised 09.02.2021
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a ©2011 Society for Conservation Biology.
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|a Understanding the way in which habitat fragmentation disrupts animal dispersal is key to identifying effective and efficient conservation strategies. To differentiate the potential effectiveness of 2 frequently used strategies for increasing the connectivity of populations in fragmented landscapes-corridors and stepping stones-we combined 3 complimentary methods: behavioral studies at habitat edges, mark-recapture, and genetic analyses. Each of these methods addresses different steps in the dispersal process that a single intensive study could not address. We applied the 3 methods to the case study of Atrytonopsis new species 1, a rare butterfly endemic to a partially urbanized stretch of barrier islands in North Carolina (U.S.A.). Results of behavioral analyses showed the butterfly flew into urban and forested areas, but not over open beach; mark-recapture showed that the butterfly dispersed successfully through short stretches of urban areas (<500 m); and genetic studies showed that longer stretches of forest (>5 km) were a dispersal barrier, but shorter stretches of urban areas (≤5 km) were not. Although results from all 3 methods indicated natural features in the landscape, not urbanization, were barriers to dispersal, when we combined the results we could determine where barriers might arise: forests restricted dispersal for the butterfly only when there were long stretches with no habitat. Therefore, urban areas have the potential to become a dispersal barrier if their extent increases, a finding that may have gone unnoticed if we had used a single approach. Protection of stepping stones should be sufficient to maintain connectivity for Atrytonopsis new species 1 at current levels of urbanization. Our research highlights how the use of complementary approaches for studying animal dispersal in fragmented landscapes can help identify conservation strategies
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Research Support, U.S. Gov't, Non-P.H.S.
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| 700 |
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|a Haddad, Nick M
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Conservation biology : the journal of the Society for Conservation Biology
|d 1999
|g 25(2011), 5 vom: 15. Okt., Seite 1022-31
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|x 1523-1739
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|g volume:25
|g year:2011
|g number:5
|g day:15
|g month:10
|g pages:1022-31
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|u http://dx.doi.org/10.1111/j.1523-1739.2011.01720.x
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