Environmental and Anthropogenic Controls over Bacterial Communities in Wetland Soils

Overview

Journal Proc Natl Acad Sci U S A

Specialty Science

Date 2008 Nov 14

PMID 19004771

Citations 98

Authors

Wyatt H Hartman

Curtis J Richardson

Rytas Vilgalys

Gregory L Bruland

Affiliations

Soon will be listed here.

Abstract

Soil bacteria regulate wetland biogeochemical processes, yet little is known about controls over their distribution and abundance. Bacteria in North Carolina swamps and bogs differ greatly from Florida Everglades fens, where communities studied were unexpectedly similar along a nutrient enrichment gradient. Bacterial composition and diversity corresponded strongly with soil pH, land use, and restoration status, but less to nutrient concentrations, and not with wetland type or soil carbon. Surprisingly, wetland restoration decreased bacterial diversity, a response opposite to that in terrestrial ecosystems. Community level patterns were underlain by responses of a few taxa, especially the Acidobacteria and Proteobacteria, suggesting promise for bacterial indicators of restoration and trophic status.

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