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Distance-Decay and Taxa-Area Relationships for Bacteria, Archaea and Methanogenic Archaea in a Tropical Lake Sediment
University of Federal Rio de Janeiro, Brazil.
Max Planck Institute Terr Microbiol, Germany.
Max Planck Institute Terr Microbiol, Germany.
Max Planck Institute Terr Microbiol, Germany.
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2014 (English)In: PLoS ONE, ISSN 1932-6203, Vol. 9, no 10, e110128- p.Article in journal (Refereed) Published
Abstract [en]

The study of of the distribution of microorganisms through space (and time) allows evaluation of biogeographic patterns, like the species-area index (z). Due to their high dispersal ability, high reproduction rates and low rates of extinction microorganisms tend to be widely distributed, and they are thought to be virtually cosmopolitan and selected primarily by environmental factors. Recent studies have shown that, despite these characteristics, microorganisms may behave like larger organisms and exhibit geographical distribution. In this study, we searched patterns of spatial diversity distribution of bacteria and archaea in a contiguous environment. We collected 26 samples of a lake sediment, distributed in a nested grid, with distances between samples ranging from 0.01 m to 1000 m. The samples were analyzed using T-RFLP (Terminal restriction fragment length polymorphism) targeting mcrA (coding for a subunit of methyl-coenzyme M reductase) and the genes of Archaeal and Bacterial 16S rRNA. From the qualitative and quantitative results (relative abundance of operational taxonomic units) we calculated the similarity index for each pair to evaluate the taxa-area and distance decay relationship slopes by linear regression. All results were significant, with mcrA genes showing the highest slope, followed by Archaeal and Bacterial 16S rRNA genes. We showed that the microorganisms of a methanogenic community, that is active in a contiguous environment, display spatial distribution and a taxa-area relationship.

Place, publisher, year, edition, pages
Public Library of Science , 2014. Vol. 9, no 10, e110128- p.
National Category
Earth and Related Environmental Sciences
URN: urn:nbn:se:liu:diva-112647DOI: 10.1371/journal.pone.0110128ISI: 000343942100040PubMedID: 25330320OAI: diva2:768945

Funding Agencies|National Council of Scientific and Technological Development (CNPq) (Brazil) [477260/2011-0]; Max Planck Society (Germany)

Available from: 2014-12-05 Created: 2014-12-05 Last updated: 2014-12-09

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Enrich Prast, Alex
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