Show simple item record Adams, Rachael V. Burg, Theresa M. 2016-04-02T20:08:22Z 2016-04-02T20:08:22Z 2015
dc.identifier.citation Adams, R. V., & Burg, T. M. (2015). Gene flow of a forest-dependent bird across a fragmented landscape. PLoS ONE, 10(11), e0140938. doi:10.1371/journal.p one.0140938 en_US
dc.description Sherpa Romeo green journal en_US
dc.description.abstract Habitat loss and fragmentation can affect the persistence of populations by reducing connectivity and restricting the ability of individuals to disperse across landscapes. Dispersal corridors promote population connectivity and therefore play important roles in maintaining gene flow in natural populations inhabiting fragmented landscapes. In the prairies, forests are restricted to riparian areas along river systems which act as important dispersal corridors for forest dependent species across large expanses of unsuitable grassland habitat. However, natural and anthropogenic barriers within riparian systems have fragmented these forested habitats. In this study, we used microsatellite markers to assess the finescale genetic structure of a forest-dependent species, the black-capped chickadee (Poecile atricapillus), along 10 different river systems in Southern Alberta. Using a landscape genetic approach, landscape features (e.g., land cover) were found to have a significant effect on patterns of genetic differentiation. Populations are genetically structured as a result of natural breaks in continuous habitat at small spatial scales, but the artificial barriers we tested do not appear to restrict gene flow. Dispersal between rivers is impeded by grasslands, evident from isolation of nearby populations (~ 50 km apart), but also within river systems by large treeless canyons (>100 km). Significant population genetic differentiation within some rivers corresponded with zones of different cottonwood (riparian poplar) tree species and their hybrids. This study illustrates the importance of considering the impacts of habitat fragmentation at small spatial scales as well as other ecological processes to gain a better understanding of how organisms respond to their environmental connectivity. Here, even in a common and widespread songbird with high dispersal potential, small breaks in continuous habitats strongly influenced the spatial patterns of genetic variation. en_US
dc.language.iso en_CA en_US
dc.publisher Public Library of Science en_US
dc.subject Gene flow en_US
dc.subject Population genetics en_US
dc.subject Birds -- Dispersal en_US
dc.subject Black-capped chickadee en_US
dc.subject Fragmented landscapes en_US
dc.subject Southern Alberta en_US
dc.title Gene flow of a forest-dependent bird across a fragmented landscape en_US
dc.type Article en_US
dc.publisher.faculty Arts and Science en_US
dc.publisher.department Department of Biological Sciences en_US
dc.description.peer-review Yes en_US
dc.publisher.institution University of Lethbridge en_US

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