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. 2009 Dec 10;462(7274):795-8.
doi: 10.1038/nature08632.

Ecoenzymatic stoichiometry of microbial organic nutrient acquisition in soil and sediment

Robert L Sinsabaugh  1 , Brian H Hill, Jennifer J Follstad Shah
Affiliations

Ecoenzymatic stoichiometry of microbial organic nutrient acquisition in soil and sediment

Robert L Sinsabaugh et al. Nature. .

Erratum in

  • Nature. 2010 Nov 4;468(7320):122

Abstract

Biota can be described in terms of elemental composition, expressed as an atomic ratio of carbon:nitrogen:phosphorus (refs 1-3). The elemental stoichiometry of microoorganisms is fundamental for understanding the production dynamics and biogeochemical cycles of ecosystems because microbial biomass is the trophic base of detrital food webs. Here we show that heterotrophic microbial communities of diverse composition from terrestrial soils and freshwater sediments share a common functional stoichiometry in relation to organic nutrient acquisition. The activities of four enzymes that catalyse the hydrolysis of assimilable products from the principal environmental sources of C, N and P show similar scaling relationships over several orders of magnitude, with a mean ratio for C:N:P activities near 1:1:1 in all habitats. We suggest that these ecoenzymatic ratios reflect the equilibria between the elemental composition of microbial biomass and detrital organic matter and the efficiencies of microbial nutrient assimilation and growth. Because ecoenzymatic activities intersect the stoichiometric and metabolic theories of ecology, they provide a functional measure of the threshold at which control of community metabolism shifts from nutrient to energy flow.

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References

    1. Proc Natl Acad Sci U S A. 2004 Jul 27;101(30):11001-6 - PubMed
    1. Science. 2007 Jan 19;315(5810):361-4 - PubMed
    1. Science. 2008 Aug 1;321(5889):684-6 - PubMed
    1. Biol Rev Camb Philos Soc. 2006 May;81(2):259-91 - PubMed
    1. Ecology. 2010 May;91(5):1455-65 - PubMed

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