Data from: Population structure over a broad spatial scale driven by non-anthropogenic factors in a wide-ranging migratory mammal, Alaskan caribou
Wide-ranging mammals face significant conservation threats, and knowledge of the spatial scale of population structure and its drivers is needed to understand processes that maintain diversity in these species. We analysed DNA from 655 Alaskan caribou (Rangifer tarandus granti) from 20 herds that va...
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Online Access: | https://doi.org/10.5061/dryad.3hp5v |
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fttriple:oai:gotriple.eu:50|dedup_wf_001::70de6286c0bbb46f0b0f7514c6fab634 2023-05-15T18:04:17+02:00 Data from: Population structure over a broad spatial scale driven by non-anthropogenic factors in a wide-ranging migratory mammal, Alaskan caribou Mager, Karen H. Colson, Kevin E. Groves, Pamela Hundertmark, Kris J. Groves, Pam 2020-06-27 https://doi.org/10.5061/dryad.3hp5v undefined unknown Dryad https://dx.doi.org/10.5061/dryad.3hp5v http://dx.doi.org/10.5061/dryad.3hp5v lic_creative-commons 10.5061/dryad.3hp5v oai:easy.dans.knaw.nl:easy-dataset:87365 oai:services.nod.dans.knaw.nl:Products/dans:oai:easy.dans.knaw.nl:easy-dataset:87365 10|openaire____::9e3be59865b2c1c335d32dae2fe7b254 re3data_____::r3d100000044 10|re3data_____::84e123776089ce3c7a33db98d9cd15a8 10|re3data_____::94816e6421eeb072e7742ce6a9decc5f 10|eurocrisdris::fe4903425d9040f680d8610d9079ea14 10|openaire____::081b82f96300b6a6e3d282bad31cb6e2 microsatellites Rangifer tarandus population structure Random Forests Landscape Genetics Alaska Life sciences medicine and health care envir geo Dataset https://vocabularies.coar-repositories.org/resource_types/c_ddb1/ 2020 fttriple https://doi.org/10.5061/dryad.3hp5v 2023-01-22T17:23:41Z Wide-ranging mammals face significant conservation threats, and knowledge of the spatial scale of population structure and its drivers is needed to understand processes that maintain diversity in these species. We analysed DNA from 655 Alaskan caribou (Rangifer tarandus granti) from 20 herds that vary in population size, used 19 microsatellite loci to document genetic diversity and differentiation in Alaskan caribou, and examined the extent to which genetic differentiation was associated with hypothesized drivers of population subdivision including landscape features, population size and ecotype. We found that Alaskan caribou are subdivided into two hierarchically structured clusters: one group on the Alaska Peninsula containing discrete herds and one large group on the Mainland lacking differentiation between many herds. Population size, geographic distance, migratory ecotype and the Kvichak River at the nexus of the Alaska Peninsula were associated with genetic differentiation. Contrary to previous hypotheses, small Mainland herds were often differentiated genetically from large interconnected herds nearby, and genetic drift coupled with reduced gene flow may explain this pattern. Our results raise the possibility that behaviour helps to maintain genetic differentiation between some herds of different ecotypes. Alaskan caribou show remarkably high diversity and low differentiation over a broad geographic scale. These results increase information for the conservation of caribou and other migratory mammals threatened by population reductions and landscape barriers and may be broadly applicable to understanding the spatial scale and ecological drivers of population structure in widespread species. caribou_Mager_et_al_MolEcol_DRYADData is a single Excel workbook with multiple worksheets. Sheet 1: msats_Alaskan_caribou Microsatellite genotypes at 19 loci for 655 caribou from 20 populations (herds). Microsatellite allele sizes are in base pairs. Missing data is indicated by '0'. Sheet 2: CBfactors_herdpairs_n>4 ... Dataset Rangifer tarandus Alaska Unknown |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
fttriple |
language |
unknown |
topic |
microsatellites Rangifer tarandus population structure Random Forests Landscape Genetics Alaska Life sciences medicine and health care envir geo |
spellingShingle |
microsatellites Rangifer tarandus population structure Random Forests Landscape Genetics Alaska Life sciences medicine and health care envir geo Mager, Karen H. Colson, Kevin E. Groves, Pamela Hundertmark, Kris J. Groves, Pam Data from: Population structure over a broad spatial scale driven by non-anthropogenic factors in a wide-ranging migratory mammal, Alaskan caribou |
topic_facet |
microsatellites Rangifer tarandus population structure Random Forests Landscape Genetics Alaska Life sciences medicine and health care envir geo |
description |
Wide-ranging mammals face significant conservation threats, and knowledge of the spatial scale of population structure and its drivers is needed to understand processes that maintain diversity in these species. We analysed DNA from 655 Alaskan caribou (Rangifer tarandus granti) from 20 herds that vary in population size, used 19 microsatellite loci to document genetic diversity and differentiation in Alaskan caribou, and examined the extent to which genetic differentiation was associated with hypothesized drivers of population subdivision including landscape features, population size and ecotype. We found that Alaskan caribou are subdivided into two hierarchically structured clusters: one group on the Alaska Peninsula containing discrete herds and one large group on the Mainland lacking differentiation between many herds. Population size, geographic distance, migratory ecotype and the Kvichak River at the nexus of the Alaska Peninsula were associated with genetic differentiation. Contrary to previous hypotheses, small Mainland herds were often differentiated genetically from large interconnected herds nearby, and genetic drift coupled with reduced gene flow may explain this pattern. Our results raise the possibility that behaviour helps to maintain genetic differentiation between some herds of different ecotypes. Alaskan caribou show remarkably high diversity and low differentiation over a broad geographic scale. These results increase information for the conservation of caribou and other migratory mammals threatened by population reductions and landscape barriers and may be broadly applicable to understanding the spatial scale and ecological drivers of population structure in widespread species. caribou_Mager_et_al_MolEcol_DRYADData is a single Excel workbook with multiple worksheets. Sheet 1: msats_Alaskan_caribou Microsatellite genotypes at 19 loci for 655 caribou from 20 populations (herds). Microsatellite allele sizes are in base pairs. Missing data is indicated by '0'. Sheet 2: CBfactors_herdpairs_n>4 ... |
format |
Dataset |
author |
Mager, Karen H. Colson, Kevin E. Groves, Pamela Hundertmark, Kris J. Groves, Pam |
author_facet |
Mager, Karen H. Colson, Kevin E. Groves, Pamela Hundertmark, Kris J. Groves, Pam |
author_sort |
Mager, Karen H. |
title |
Data from: Population structure over a broad spatial scale driven by non-anthropogenic factors in a wide-ranging migratory mammal, Alaskan caribou |
title_short |
Data from: Population structure over a broad spatial scale driven by non-anthropogenic factors in a wide-ranging migratory mammal, Alaskan caribou |
title_full |
Data from: Population structure over a broad spatial scale driven by non-anthropogenic factors in a wide-ranging migratory mammal, Alaskan caribou |
title_fullStr |
Data from: Population structure over a broad spatial scale driven by non-anthropogenic factors in a wide-ranging migratory mammal, Alaskan caribou |
title_full_unstemmed |
Data from: Population structure over a broad spatial scale driven by non-anthropogenic factors in a wide-ranging migratory mammal, Alaskan caribou |
title_sort |
data from: population structure over a broad spatial scale driven by non-anthropogenic factors in a wide-ranging migratory mammal, alaskan caribou |
publisher |
Dryad |
publishDate |
2020 |
url |
https://doi.org/10.5061/dryad.3hp5v |
genre |
Rangifer tarandus Alaska |
genre_facet |
Rangifer tarandus Alaska |
op_source |
10.5061/dryad.3hp5v oai:easy.dans.knaw.nl:easy-dataset:87365 oai:services.nod.dans.knaw.nl:Products/dans:oai:easy.dans.knaw.nl:easy-dataset:87365 10|openaire____::9e3be59865b2c1c335d32dae2fe7b254 re3data_____::r3d100000044 10|re3data_____::84e123776089ce3c7a33db98d9cd15a8 10|re3data_____::94816e6421eeb072e7742ce6a9decc5f 10|eurocrisdris::fe4903425d9040f680d8610d9079ea14 10|openaire____::081b82f96300b6a6e3d282bad31cb6e2 |
op_relation |
https://dx.doi.org/10.5061/dryad.3hp5v http://dx.doi.org/10.5061/dryad.3hp5v |
op_rights |
lic_creative-commons |
op_doi |
https://doi.org/10.5061/dryad.3hp5v |
_version_ |
1766175629055623168 |