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Atlantic reef fish biogeography and evolution

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dc.contributor.author Floeter, S. R. en
dc.contributor.author Rocha, Luiz A. en
dc.contributor.author Robertson, D. Ross en
dc.contributor.author Joyeux, J. C. en
dc.contributor.author Smith-Vaniz, William F. en
dc.contributor.author Edwards, A. J. en
dc.contributor.author Barreiros, J. P. en
dc.contributor.author Ferreira, C. E. L. en
dc.contributor.author Gasparini, Joao Luiz en
dc.contributor.author Brito, A. en
dc.contributor.author Falcon, J. M. en
dc.contributor.author Bowen, Brian W. en
dc.contributor.author Bernardi, Giacomo en
dc.date.accessioned 2011-02-09T20:03:09Z
dc.date.available 2011-02-09T20:03:09Z
dc.date.issued 2008
dc.identifier.citation Floeter, S. R., Rocha, Luiz A., Robertson, D. Ross, Joyeux, J. C., Smith-Vaniz, William F., Edwards, A. J., Barreiros, J. P., Ferreira, C. E. L., Gasparini, Joao Luiz, Brito, A., Falcon, J. M., Bowen, Brian W., and Bernardi, Giacomo. 2008. "<a href="https://repository.si.edu/handle/10088/11896">Atlantic reef fish biogeography and evolution</a>." <em>Journal of Biogeography</em>. 35 (1):22&ndash;47. en
dc.identifier.issn 1365-2699
dc.identifier.uri http://hdl.handle.net/10088/11896
dc.description.abstract Aim To understand why and when areas of endemism (provinces) of the tropical Atlantic Ocean were formed, how they relate to each other, and what processes have contributed to faunal enrichment. Location Atlantic Ocean. Methods The distributions of 2605 species of reef fishes were compiled for 25 areas of the Atlantic and southern Africa. Maximum-parsimony and distance analyses were employed to investigate biogeographical relationships among those areas. A collection of 26 phylogenies of various Atlantic reef fish taxa was used to assess patterns of origin and diversification relative to evolutionary scenarios based on spatio-temporal sequences of species splitting produced by geological and palaeoceanographic events. We present data on faunal (species and genera) richness, endemism patterns, diversity buildup (i.e. speciation processes), and evaluate the operation of the main biogeographical barriers and/or filters. Results Phylogenetic (proportion of sister species) and distributional (number of shared species) patterns are generally concordant with recognized biogeographical provinces in the Atlantic. The highly uneven distribution of species in certain genera appears to be related to their origin, with highest species richness in areas with the greatest phylogenetic depth. Diversity buildup in Atlantic reef fishes involved (1) diversification within each province, (2) isolation as a result of biogeographical barriers, and (3) stochastic accretion by means of dispersal between provinces. The timing of divergence events is not concordant among taxonomic groups. The three soft (non-terrestrial) inter-regional barriers (mid-Atlantic, Amazon, and Benguela) clearly act as 'filters' by restricting dispersal but at the same time allowing occasional crossings that apparently lead to the establishment of new populations and species. Fluctuations in the effectiveness of the filters, combined with ecological differences among provinces, apparently provide a mechanism for much of the recent diversification of reef fishes in the Atlantic. Main conclusions Our data set indicates that both historical events (e.g. Tethys closure) and relatively recent dispersal (with or without further speciation) have had a strong influence on Atlantic tropical marine biodiversity and have contributed to the biogeographical patterns we observe today; however, examples of the latter process outnumber those of the former. en
dc.relation.ispartof Journal of Biogeography en
dc.title Atlantic reef fish biogeography and evolution en
dc.type Journal Article en
dc.identifier.srbnumber 74267
rft.jtitle Journal of Biogeography
rft.volume 35
rft.issue 1
rft.spage 22
rft.epage 47
dc.description.SIUnit NH-EOL en
dc.description.SIUnit STRI en
dc.citation.spage 22
dc.citation.epage 47

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