Multiscale landscape genetics of American marten at their southern range periphery
Abstract American marten ( Martes americana ) are a conservation priority in many forested regions of North America. Populations are fragmented at the southern edge of their distribution due to suboptimal habitat conditions. Facilitating gene flow may improve population resilience through genetic an...
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crspringernat:10.1038/s41437-020-0295-y 2023-05-15T13:21:50+02:00 Multiscale landscape genetics of American marten at their southern range periphery Aylward, Cody M. Murdoch, James D. Kilpatrick, C. William Vermont Department of Fish and Wildlife 2020 http://dx.doi.org/10.1038/s41437-020-0295-y http://www.nature.com/articles/s41437-020-0295-y.pdf http://www.nature.com/articles/s41437-020-0295-y en eng Springer Science and Business Media LLC https://creativecommons.org/licenses/by/4.0 https://creativecommons.org/licenses/by/4.0 CC-BY Heredity volume 124, issue 4, page 550-561 ISSN 0018-067X 1365-2540 Genetics(clinical) Genetics journal-article 2020 crspringernat https://doi.org/10.1038/s41437-020-0295-y 2022-01-04T13:37:20Z Abstract American marten ( Martes americana ) are a conservation priority in many forested regions of North America. Populations are fragmented at the southern edge of their distribution due to suboptimal habitat conditions. Facilitating gene flow may improve population resilience through genetic and demographic rescue. We used a multiscale approach to estimate the relationship between genetic connectivity and landscape characteristics among individuals at three scales in the northeastern United States: regional, subregional, and local. We integrated multiple modeling techniques and identified top models based on consensus. Top models were used to parameterize resistance surfaces at each scale, and circuit theory was used to identify potential movement corridors. Regional gene flow was affected by forest cover, elevation, developed land cover, and slope. At subregional and local scales, the effects were site specific and included subsets of temperature, elevation, developed land cover, and slope. Developed land cover significantly affected gene flow at each scale. At finer scales, lack of variance in forest cover may have limited the ability to detect a relationship with gene flow. The effect of slope on gene flow was positive or negative, depending on the site examined. Occupancy probability was a relatively poor predictor, and we caution its use as a proxy for landscape resistance. Our results underscore the importance of replication and multiscale approaches in landscape genetics. Climate warming and landscape conversion may reduce the genetic connectivity of marten populations in the northeastern United States, and represent the primary challenges to marten conservation at the southern periphery of their range. Article in Journal/Newspaper American marten Martes americana Springer Nature (via Crossref) Heredity 124 4 550 561 |
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Springer Nature (via Crossref) |
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English |
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Genetics(clinical) Genetics |
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Genetics(clinical) Genetics Aylward, Cody M. Murdoch, James D. Kilpatrick, C. William Multiscale landscape genetics of American marten at their southern range periphery |
topic_facet |
Genetics(clinical) Genetics |
description |
Abstract American marten ( Martes americana ) are a conservation priority in many forested regions of North America. Populations are fragmented at the southern edge of their distribution due to suboptimal habitat conditions. Facilitating gene flow may improve population resilience through genetic and demographic rescue. We used a multiscale approach to estimate the relationship between genetic connectivity and landscape characteristics among individuals at three scales in the northeastern United States: regional, subregional, and local. We integrated multiple modeling techniques and identified top models based on consensus. Top models were used to parameterize resistance surfaces at each scale, and circuit theory was used to identify potential movement corridors. Regional gene flow was affected by forest cover, elevation, developed land cover, and slope. At subregional and local scales, the effects were site specific and included subsets of temperature, elevation, developed land cover, and slope. Developed land cover significantly affected gene flow at each scale. At finer scales, lack of variance in forest cover may have limited the ability to detect a relationship with gene flow. The effect of slope on gene flow was positive or negative, depending on the site examined. Occupancy probability was a relatively poor predictor, and we caution its use as a proxy for landscape resistance. Our results underscore the importance of replication and multiscale approaches in landscape genetics. Climate warming and landscape conversion may reduce the genetic connectivity of marten populations in the northeastern United States, and represent the primary challenges to marten conservation at the southern periphery of their range. |
author2 |
Vermont Department of Fish and Wildlife |
format |
Article in Journal/Newspaper |
author |
Aylward, Cody M. Murdoch, James D. Kilpatrick, C. William |
author_facet |
Aylward, Cody M. Murdoch, James D. Kilpatrick, C. William |
author_sort |
Aylward, Cody M. |
title |
Multiscale landscape genetics of American marten at their southern range periphery |
title_short |
Multiscale landscape genetics of American marten at their southern range periphery |
title_full |
Multiscale landscape genetics of American marten at their southern range periphery |
title_fullStr |
Multiscale landscape genetics of American marten at their southern range periphery |
title_full_unstemmed |
Multiscale landscape genetics of American marten at their southern range periphery |
title_sort |
multiscale landscape genetics of american marten at their southern range periphery |
publisher |
Springer Science and Business Media LLC |
publishDate |
2020 |
url |
http://dx.doi.org/10.1038/s41437-020-0295-y http://www.nature.com/articles/s41437-020-0295-y.pdf http://www.nature.com/articles/s41437-020-0295-y |
genre |
American marten Martes americana |
genre_facet |
American marten Martes americana |
op_source |
Heredity volume 124, issue 4, page 550-561 ISSN 0018-067X 1365-2540 |
op_rights |
https://creativecommons.org/licenses/by/4.0 https://creativecommons.org/licenses/by/4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1038/s41437-020-0295-y |
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Heredity |
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124 |
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4 |
container_start_page |
550 |
op_container_end_page |
561 |
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