Microbial community composition in sediments resists perturbation by nutrient enrichment

被引：112

作者：

Bowen, Jennifer L. ^{[1
]}

Ward, Bess B. ^{[2
]}

Morrison, Hilary G. ^{[3
]}

Hobbie, John E. ^{[1
]}

Valiela, Ivan ^{[1
]}

Deegan, Linda A. ^{[1
]}

Sogin, Mitchell L. ^{[3
]}

机构：

[1] Marine Biol Lab, Ctr Ecosyst, Woods Hole, MA 02543 USA

[2] Princeton Univ, Dept Geosci, Princeton, NJ 08544 USA

[3] Marine Biol Lab, Josephine Bay Paul Ctr Comparat Mol Biol & Evolut, Woods Hole, MA 02543 USA

来源：

ISME JOURNAL | 2011年 / 5卷 / 09期

基金：

美国国家科学基金会;

关键词：

salt marsh; eutrophication; estuaries; denitrification; resistance; nirS; SALT-MARSH; NITROGEN; BIOSPHERE; DENITRIFICATION; REDUCTION; DIVERSITY; NIRS;

D O I：

10.1038/ismej.2011.22

中图分类号：

Q14 [生态学（生物生态学）];

学科分类号：

071012 ; 0713 ;

摘要：

Functional redundancy in bacterial communities is expected to allow microbial assemblages to survive perturbation by allowing continuity in function despite compositional changes in communities. Recent evidence suggests, however, that microbial communities change both composition and function as a result of disturbance. We present evidence for a third response: resistance. We examined microbial community response to perturbation caused by nutrient enrichment in salt marsh sediments using deep pyrosequencing of 16S rRNA and functional gene microarrays targeting the nirS gene. Composition of the microbial community, as demonstrated by both genes, was unaffected by significant variations in external nutrient supply in our sampling locations, despite demonstrable and diverse nutrient-induced changes in many aspects of marsh ecology. The lack of response to external forcing demonstrates a remarkable uncoupling between microbial composition and ecosystem-level biogeochemical processes and suggests that sediment microbial communities are able to resist some forms of perturbation. The ISME Journal (2011) 5, 1540-1548; doi:10.1038/ismej.2011.22; published online 17 March 2011

引用

页码：1540 / 1548

页数：9

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