Diversification in the tropical Pacific: comparisons between marine and terrestrial systems and the importance of founder speciation
SYNOPSIS. Patterns of distribution and processes of differentiation have often been contrasted between terrestrial and marine biotas. The islands of Oceania offer an excellent setting to explore this contrast, because the geographic setting for terrestrial and shallow-water, benthic, marine organism...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.502.9812 2023-05-15T17:13:48+02:00 Diversification in the tropical Pacific: comparisons between marine and terrestrial systems and the importance of founder speciation Gustav Paulay Chris Meyer The Pennsylvania State University CiteSeerX Archives 2002 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.502.9812 http://icb.oxfordjournals.org/content/42/5/922.full.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.502.9812 http://icb.oxfordjournals.org/content/42/5/922.full.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://icb.oxfordjournals.org/content/42/5/922.full.pdf text 2002 ftciteseerx 2016-01-08T09:13:59Z SYNOPSIS. Patterns of distribution and processes of differentiation have often been contrasted between terrestrial and marine biotas. The islands of Oceania offer an excellent setting to explore this contrast, because the geographic setting for terrestrial and shallow-water, benthic, marine organisms are the same: the myriad islands strewn across the vast Pacific. The size of species ranges and the geographic distribution of endemism are two biogeographic attributes that are thought to differ markedly between terrestrial and marine biotas in the Pacific. While terrestrial species are frequently confined to single islands or archipel-agoes throughout Oceania, marine species tend to have wide to very wide distributions, and are rarely restricted to single island groups except for the most isolated archipelagoes. We explore the conditions under which species can reach an island by dispersal and differentiate. Genetic differentiation can occur either through founder speciation or vicariance; these processes are requisite ends of a continuum. We show that founder speciation is most likely when few propagules enter the dispersal medium and survive well while they travel far. We argue that conditions favorable to founder speciation are common in marine as well as terrestrial systems, and that terrestrial-type, archipelagic-level endemism is likely common in marine taxa. We give examples of marine groups that show archipelagic level endemism on most Pacific island groups as well as of terrestrial species that are widespread. Thus both the patterns and processes of insular diver-sification are variable, and overlap more between land and sea than previously considered. Text Myriad Islands Single Island Unknown Myriad Islands ENVELOPE(-64.393,-64.393,-65.077,-65.077) Pacific Single Island ENVELOPE(68.667,68.667,-69.817,-69.817) |
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English |
description |
SYNOPSIS. Patterns of distribution and processes of differentiation have often been contrasted between terrestrial and marine biotas. The islands of Oceania offer an excellent setting to explore this contrast, because the geographic setting for terrestrial and shallow-water, benthic, marine organisms are the same: the myriad islands strewn across the vast Pacific. The size of species ranges and the geographic distribution of endemism are two biogeographic attributes that are thought to differ markedly between terrestrial and marine biotas in the Pacific. While terrestrial species are frequently confined to single islands or archipel-agoes throughout Oceania, marine species tend to have wide to very wide distributions, and are rarely restricted to single island groups except for the most isolated archipelagoes. We explore the conditions under which species can reach an island by dispersal and differentiate. Genetic differentiation can occur either through founder speciation or vicariance; these processes are requisite ends of a continuum. We show that founder speciation is most likely when few propagules enter the dispersal medium and survive well while they travel far. We argue that conditions favorable to founder speciation are common in marine as well as terrestrial systems, and that terrestrial-type, archipelagic-level endemism is likely common in marine taxa. We give examples of marine groups that show archipelagic level endemism on most Pacific island groups as well as of terrestrial species that are widespread. Thus both the patterns and processes of insular diver-sification are variable, and overlap more between land and sea than previously considered. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Gustav Paulay Chris Meyer |
spellingShingle |
Gustav Paulay Chris Meyer Diversification in the tropical Pacific: comparisons between marine and terrestrial systems and the importance of founder speciation |
author_facet |
Gustav Paulay Chris Meyer |
author_sort |
Gustav Paulay |
title |
Diversification in the tropical Pacific: comparisons between marine and terrestrial systems and the importance of founder speciation |
title_short |
Diversification in the tropical Pacific: comparisons between marine and terrestrial systems and the importance of founder speciation |
title_full |
Diversification in the tropical Pacific: comparisons between marine and terrestrial systems and the importance of founder speciation |
title_fullStr |
Diversification in the tropical Pacific: comparisons between marine and terrestrial systems and the importance of founder speciation |
title_full_unstemmed |
Diversification in the tropical Pacific: comparisons between marine and terrestrial systems and the importance of founder speciation |
title_sort |
diversification in the tropical pacific: comparisons between marine and terrestrial systems and the importance of founder speciation |
publishDate |
2002 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.502.9812 http://icb.oxfordjournals.org/content/42/5/922.full.pdf |
long_lat |
ENVELOPE(-64.393,-64.393,-65.077,-65.077) ENVELOPE(68.667,68.667,-69.817,-69.817) |
geographic |
Myriad Islands Pacific Single Island |
geographic_facet |
Myriad Islands Pacific Single Island |
genre |
Myriad Islands Single Island |
genre_facet |
Myriad Islands Single Island |
op_source |
http://icb.oxfordjournals.org/content/42/5/922.full.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.502.9812 http://icb.oxfordjournals.org/content/42/5/922.full.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766070993480056832 |