Comparative phylogeographic analysis suggests a shared history among eastern North American boreal forest birds

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dc.contributor.authorRalston, Joel
dc.contributor.authorFitzGerald, Alyssa M.
dc.contributor.authorBurg, Theresa M.
dc.contributor.authorStarkloff, Naima C.
dc.contributor.authorWarkentin, Ian G.
dc.contributor.authorKirchman, Jeremy J.
dc.date.accessioned2022-10-14T21:45:17Z
dc.date.available2022-10-14T21:45:17Z
dc.date.issued2021
dc.descriptionAccepted author manuscripten_US
dc.description.abstractPhylogeographic structure within high-latitude North American birds is likely shaped by a history of isolation in refugia during Pleistocene glaciations. Previous studies of individual species have come to diverse conclusions regarding the number and location of likely refugia, but no studies have explicitly tested for biogeographic concordance in a comparative phylogeographic framework. Here we use a hierarchical approximate Bayesian computation analysis of mitochondrial DNA sequences from 653 individuals of 6 bird species that are currently co-distributed in the boreal forest of North America to test for biogeographic congruence. We find support for congruent phylogeographic patterns across species, with shallow divergence dating to the Holocene within each species. Combining genetic results with paleodistribution modeling, we propose that these species shared a single Pleistocene refugium south of the ice sheets in eastern North America. Additionally, we assess modern geographic genetic structure within species, focusing on Newfoundland and disjunct high-elevation populations at the southern periphery of ranges. We find evidence for a “periphery effect” in some species with significant genetic structure among peripheral populations and between peripheral and central populations. Our results suggest that reduced gene flow among peripheral populations, rather than discordant biogeographic histories, can explain the small differences in genetic structure and levels of genetic diversity among co-distributed boreal forest birdsen_US
dc.description.peer-reviewYesen_US
dc.identifier.citationRalston, J., FitzGerald, A. M., Burg, T. M., Starkloff, N. C., Warkentin, I. G., & Kirchman, J. J. (2021). Comparative phylogeographic analysis suggests a shared history among eastern North American boreal forest birds. Ornithology, 138(3). https://doi.org/10.1093/ornithology/ukab018en_US
dc.identifier.urihttps://hdl.handle.net/10133/6351
dc.language.isoen_USen_US
dc.publisherOxford Academicen_US
dc.publisher.departmentDepartment of Biological Sciencesen_US
dc.publisher.facultyArts and Scienceen_US
dc.publisher.institutionSaint Mary's Collegeen_US
dc.publisher.institutionUniversity of Californiaen_US
dc.publisher.institutionUniversity of Lethbridgeen_US
dc.publisher.institutionState University of New York at Albanyen_US
dc.publisher.institutionNew York State Museumen_US
dc.publisher.institutionMemorial University of Newfoundlanden_US
dc.publisher.urlhttps://doi.org/10.1093/ornithology/ukab018en_US
dc.subjectBoreal birdsen_US
dc.subjectCoalescenceen_US
dc.subjectHierarchical approximate Bayesian computationen_US
dc.subjectPaleodistributionen_US
dc.subjectPhylogeographyen_US
dc.subjectRange peripheryen_US
dc.subjectSpruce-firen_US
dc.subject.lcshPhylogeography--North America
dc.subject.lcshTiagas--North America
dc.subject.lcshForest birds--North America
dc.titleComparative phylogeographic analysis suggests a shared history among eastern North American boreal forest birdsen_US
dc.typeArticleen_US
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