Edges and Overlaps in Northwest Atlantic Phylogeography

As marine environments change, the greatest ecological shifts—including resource usage and species interactions—are likely to take place in or near regions of biogeographic and phylogeographic transition. However, our understanding of where these transitional regions exist depends on the defining cr...

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Main Authors: James E. Byers, John P. Wares, James M. Pringle, John D. Robinson, Safra Altman
Format: Article
Language:English
Published: MDPI AG 2013-04-01
Series:Diversity
Subjects:
Online Access:http://www.mdpi.com/1424-2818/5/2/263
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author James E. Byers
John P. Wares
James M. Pringle
John D. Robinson
Safra Altman
author_facet James E. Byers
John P. Wares
James M. Pringle
John D. Robinson
Safra Altman
author_sort James E. Byers
collection DOAJ
description As marine environments change, the greatest ecological shifts—including resource usage and species interactions—are likely to take place in or near regions of biogeographic and phylogeographic transition. However, our understanding of where these transitional regions exist depends on the defining criteria. Here we evaluate phylogeographic transitions using a bootstrapping procedure that allows us to focus on either the strongest genetic transitions between a pair of contiguous populations, versus evaluation of transitions inclusive of the entire overlap between two intraspecific genetic lineages. We compiled data for the Atlantic coast of the United States, and evaluate taxa with short- and long-dispersing larval phases separately. Our results are largely concordant with previous biogeographic and phylogeographic analyses, indicating strong biotic change associated with the regions near Cape Cod, the Delmarva Peninsula, and eastern Florida. However, inclusive analysis of the entire range of sympatry for intraspecific lineages suggests that broad regions—the Mid-Atlantic Bight and eastern Florida–already harbor divergent intraspecific lineages, suggesting the potential for ecological evaluation of resource use between these lineages. This study establishes baseline information for tracking how such patterns change as predicted environmental changes take place.
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spelling doaj.art-912c222d023a46e984cac87cbacbffdb2022-12-22T02:58:37ZengMDPI AGDiversity1424-28182013-04-015226327510.3390/d5020263Edges and Overlaps in Northwest Atlantic PhylogeographyJames E. ByersJohn P. WaresJames M. PringleJohn D. RobinsonSafra AltmanAs marine environments change, the greatest ecological shifts—including resource usage and species interactions—are likely to take place in or near regions of biogeographic and phylogeographic transition. However, our understanding of where these transitional regions exist depends on the defining criteria. Here we evaluate phylogeographic transitions using a bootstrapping procedure that allows us to focus on either the strongest genetic transitions between a pair of contiguous populations, versus evaluation of transitions inclusive of the entire overlap between two intraspecific genetic lineages. We compiled data for the Atlantic coast of the United States, and evaluate taxa with short- and long-dispersing larval phases separately. Our results are largely concordant with previous biogeographic and phylogeographic analyses, indicating strong biotic change associated with the regions near Cape Cod, the Delmarva Peninsula, and eastern Florida. However, inclusive analysis of the entire range of sympatry for intraspecific lineages suggests that broad regions—the Mid-Atlantic Bight and eastern Florida–already harbor divergent intraspecific lineages, suggesting the potential for ecological evaluation of resource use between these lineages. This study establishes baseline information for tracking how such patterns change as predicted environmental changes take place.http://www.mdpi.com/1424-2818/5/2/263phylogeographyAtlanticbootstrappingmarine
spellingShingle James E. Byers
John P. Wares
James M. Pringle
John D. Robinson
Safra Altman
Edges and Overlaps in Northwest Atlantic Phylogeography
Diversity
phylogeography
Atlantic
bootstrapping
marine
title Edges and Overlaps in Northwest Atlantic Phylogeography
title_full Edges and Overlaps in Northwest Atlantic Phylogeography
title_fullStr Edges and Overlaps in Northwest Atlantic Phylogeography
title_full_unstemmed Edges and Overlaps in Northwest Atlantic Phylogeography
title_short Edges and Overlaps in Northwest Atlantic Phylogeography
title_sort edges and overlaps in northwest atlantic phylogeography
topic phylogeography
Atlantic
bootstrapping
marine
url http://www.mdpi.com/1424-2818/5/2/263
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AT safraaltman edgesandoverlapsinnorthwestatlanticphylogeography