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A phylogenetic basis for species-area relationships among three Pacific Island floras

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dc.contributor.author Price, Jonathan P. en
dc.contributor.author Wagner, Warren L. en
dc.date.accessioned 2011-08-08T12:43:29Z
dc.date.available 2011-08-08T12:43:29Z
dc.date.issued 2011
dc.identifier.citation Price, Jonathan P. and Wagner, Warren L. 2011. "<a href="https%3A%2F%2Frepository.si.edu%2Fhandle%2F10088%2F16782">A phylogenetic basis for species-area relationships among three Pacific Island floras</a>." <em>American Journal of Botany</em>. 98 (3):449&ndash;459. <a href="https://doi.org/10.3732/ajb.1000388">https://doi.org/10.3732/ajb.1000388</a> en
dc.identifier.issn 0002-9122
dc.identifier.uri http://hdl.handle.net/10088/16782
dc.description.abstract * Premise of the study: The angiosperm floras of the Hawaiian, Society, and Marquesas archipelagoes are remarkably comparable ecologically and evolutionarily, a result of similar geologic history, climate, and isolation. * Methods: We characterized variation in species richness among islands and whole archipelagoes by analyzing species-area relationships (SARs). By partitioning each flora into putative phylogenetic lineages each derived from a given colonization event, we explored several ways in which speciation contributes to SARs. * Key results: Specifically, these groups exhibit expected island SARs and a whole archipelago SAR characterized by a steep slope. The number of species added by net cladogenesis increases with area much more quickly than the number contributed by net colonization from outside. In each of the three archipelagoes, most colonists do not speciate, while many species occur in a few diverse colonist lineages. Colonization events that are unique to a given archipelago are in more prone to speciation than lineages with close relatives in the other archipelagoes. Most lineages with relatives in all three archipelagoes have one species in each, suggesting a similar tendency not to diversify. On the other hand, a correlation between lineage size in one archipelago and that of related lineages in other archipelagoes suggests a consistent tendency among diverse groups to speciate extensively. Lineages with multiple species in each archipelago also tend to have far more species in the largest archipelago, the Hawaiian Islands. * Conclusions: The most diverse lineages exhibit a strong response to archipelago area. These diverse, area-sensitive lineages contribute substantially to the slope of the inter-archipelago SAR. Regional species pools elsewhere may exhibit similar steep-sloped SARs; thus, these findings may inform how the behavior of lineages with different responses to increasing shapes these patterns. en
dc.relation.ispartof American Journal of Botany en
dc.title A phylogenetic basis for species-area relationships among three Pacific Island floras en
dc.type Journal Article en
dc.identifier.srbnumber 99207
dc.identifier.doi 10.3732/ajb.1000388
rft.jtitle American Journal of Botany
rft.volume 98
rft.issue 3
rft.spage 449
rft.epage 459
dc.description.SIUnit NH-Botany en
dc.description.SIUnit NMNH en
dc.description.SIUnit Peer-reviewed en
dc.citation.spage 449
dc.citation.epage 459

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