Environment drives high phylogenetic turnover among oceanic bacterial communities

Pommier, Thomas, Douzery, Emmanuel J.P., and Mouillot, David (2012) Environment drives high phylogenetic turnover among oceanic bacterial communities. Biology Letters, 8 (4). pp. 562-566.

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Abstract

Although environmental filtering has been observed to influence the biodiversity patterns of marine bacterial communities, it was restricted to the regional scale and to the species level, leaving the main drivers unknown at large biogeographic scales and higher taxonomic levels. Bacterial communities with different species compositions may nevertheless share phylogenetic lineages, and phylogenetic turnover (PT) among those communities may be surprisingly low along any biogeographic or environmental gradient. Here, we investigated the relative influence of environmental filtering and geographical distance on the PT between marine bacterial communities living more than 8000 km apart in contrasted abiotic conditions. PT was high between communities and was more structured by local environmental factors than by geographical distance, suggesting the predominance of a lineage filtering process. Strong phenotype-environment mismatches observed in the ocean may surpass high connectivity between marine microbial communities.

Item ID: 25627
Item Type: Article (Research - C1)
ISSN: 1744-957X
Keywords: diversity; phylogenetic turnover; biogeography
Date Deposited: 19 Mar 2013 05:13
FoR Codes: 06 BIOLOGICAL SCIENCES > 0603 Evolutionary Biology > 060302 Biogeography and Phylogeography @ 100%
SEO Codes: 96 ENVIRONMENT > 9608 Flora, Fauna and Biodiversity > 960808 Marine Flora, Fauna and Biodiversity @ 100%
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