EVALUATING SIGNATURES OF GLACIAL REFUGIA FOR NORTH ATLANTIC BENTHIC MARINE TAXA
A goal of phylogeography is to relate patterns of genetic differentiation to potential historical geographic isolating events. Quaternary glaciations, particularly the one culminating in the Last Glacial Maximum ∼21 ka (thousands of years ago), greatly affected the distributions and population sizes...
Published in: | Ecology |
---|---|
Main Authors: | , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Wiley
2008
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1890/08-0257.1 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1890%2F08-0257.1 https://esajournals.onlinelibrary.wiley.com/doi/pdf/10.1890/08-0257.1 |
id |
crwiley:10.1890/08-0257.1 |
---|---|
record_format |
openpolar |
spelling |
crwiley:10.1890/08-0257.1 2024-06-23T07:55:02+00:00 EVALUATING SIGNATURES OF GLACIAL REFUGIA FOR NORTH ATLANTIC BENTHIC MARINE TAXA Maggs, Christine A. Castilho, Rita Foltz, David Henzler, Christy Jolly, Marc Taimour Kelly, John Olsen, Jeanine Perez, Kathryn E. Stam, Wytze Väinölä, Risto Viard, Frédérique Wares, John 2008 http://dx.doi.org/10.1890/08-0257.1 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1890%2F08-0257.1 https://esajournals.onlinelibrary.wiley.com/doi/pdf/10.1890/08-0257.1 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Ecology volume 89, issue sp11 ISSN 0012-9658 1939-9170 journal-article 2008 crwiley https://doi.org/10.1890/08-0257.1 2024-06-06T04:20:34Z A goal of phylogeography is to relate patterns of genetic differentiation to potential historical geographic isolating events. Quaternary glaciations, particularly the one culminating in the Last Glacial Maximum ∼21 ka (thousands of years ago), greatly affected the distributions and population sizes of temperate marine species as their ranges retreated southward to escape ice sheets. Traditional genetic models of glacial refugia and routes of recolonization include these predictions: low genetic diversity in formerly glaciated areas, with a small number of alleles/haplotypes dominating disproportionately large areas, and high diversity including “private” alleles in glacial refugia. In the Northern Hemisphere, low diversity in the north and high diversity in the south are expected. This simple model does not account for the possibility of populations surviving in relatively small northern periglacial refugia. If these periglacial populations experienced extreme bottlenecks, they could have the low genetic diversity expected in recolonized areas with no refugia, but should have more endemic diversity (private alleles) than recently recolonized areas. This review examines evidence of putative glacial refugia for eight benthic marine taxa in the temperate North Atlantic. All data sets were reanalyzed to allow direct comparisons between geographic patterns of genetic diversity and distribution of particular clades and haplotypes including private alleles. We contend that for marine organisms the genetic signatures of northern periglacial and southern refugia can be distinguished from one another. There is evidence for several periglacial refugia in northern latitudes, giving credence to recent climatic reconstructions with less extensive glaciation. Article in Journal/Newspaper North Atlantic Wiley Online Library Ecology 89 sp11 S108 S122 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
A goal of phylogeography is to relate patterns of genetic differentiation to potential historical geographic isolating events. Quaternary glaciations, particularly the one culminating in the Last Glacial Maximum ∼21 ka (thousands of years ago), greatly affected the distributions and population sizes of temperate marine species as their ranges retreated southward to escape ice sheets. Traditional genetic models of glacial refugia and routes of recolonization include these predictions: low genetic diversity in formerly glaciated areas, with a small number of alleles/haplotypes dominating disproportionately large areas, and high diversity including “private” alleles in glacial refugia. In the Northern Hemisphere, low diversity in the north and high diversity in the south are expected. This simple model does not account for the possibility of populations surviving in relatively small northern periglacial refugia. If these periglacial populations experienced extreme bottlenecks, they could have the low genetic diversity expected in recolonized areas with no refugia, but should have more endemic diversity (private alleles) than recently recolonized areas. This review examines evidence of putative glacial refugia for eight benthic marine taxa in the temperate North Atlantic. All data sets were reanalyzed to allow direct comparisons between geographic patterns of genetic diversity and distribution of particular clades and haplotypes including private alleles. We contend that for marine organisms the genetic signatures of northern periglacial and southern refugia can be distinguished from one another. There is evidence for several periglacial refugia in northern latitudes, giving credence to recent climatic reconstructions with less extensive glaciation. |
format |
Article in Journal/Newspaper |
author |
Maggs, Christine A. Castilho, Rita Foltz, David Henzler, Christy Jolly, Marc Taimour Kelly, John Olsen, Jeanine Perez, Kathryn E. Stam, Wytze Väinölä, Risto Viard, Frédérique Wares, John |
spellingShingle |
Maggs, Christine A. Castilho, Rita Foltz, David Henzler, Christy Jolly, Marc Taimour Kelly, John Olsen, Jeanine Perez, Kathryn E. Stam, Wytze Väinölä, Risto Viard, Frédérique Wares, John EVALUATING SIGNATURES OF GLACIAL REFUGIA FOR NORTH ATLANTIC BENTHIC MARINE TAXA |
author_facet |
Maggs, Christine A. Castilho, Rita Foltz, David Henzler, Christy Jolly, Marc Taimour Kelly, John Olsen, Jeanine Perez, Kathryn E. Stam, Wytze Väinölä, Risto Viard, Frédérique Wares, John |
author_sort |
Maggs, Christine A. |
title |
EVALUATING SIGNATURES OF GLACIAL REFUGIA FOR NORTH ATLANTIC BENTHIC MARINE TAXA |
title_short |
EVALUATING SIGNATURES OF GLACIAL REFUGIA FOR NORTH ATLANTIC BENTHIC MARINE TAXA |
title_full |
EVALUATING SIGNATURES OF GLACIAL REFUGIA FOR NORTH ATLANTIC BENTHIC MARINE TAXA |
title_fullStr |
EVALUATING SIGNATURES OF GLACIAL REFUGIA FOR NORTH ATLANTIC BENTHIC MARINE TAXA |
title_full_unstemmed |
EVALUATING SIGNATURES OF GLACIAL REFUGIA FOR NORTH ATLANTIC BENTHIC MARINE TAXA |
title_sort |
evaluating signatures of glacial refugia for north atlantic benthic marine taxa |
publisher |
Wiley |
publishDate |
2008 |
url |
http://dx.doi.org/10.1890/08-0257.1 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1890%2F08-0257.1 https://esajournals.onlinelibrary.wiley.com/doi/pdf/10.1890/08-0257.1 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Ecology volume 89, issue sp11 ISSN 0012-9658 1939-9170 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1890/08-0257.1 |
container_title |
Ecology |
container_volume |
89 |
container_issue |
sp11 |
container_start_page |
S108 |
op_container_end_page |
S122 |
_version_ |
1802647429762252800 |