Microbial mechanisms mediating increased soil C storage under elevated atmospheric N deposition.

ABSTRACT: Future rates of anthropogenic N deposition can slow the cycling and enhance the storage of C in forest ecosystems. In a northern hardwood forest ecosystem, experimental N deposition has decreased the extent of forest floor decay, leading to increased soil C storage. To better understand the microbial mechanisms mediating this response, we examined the functional genes derived from communities of actinobacteria and fungi present in the forest floor using GeoChip 4.0, a high-throughput functional-gene microarray. The compositions of functional genes derived from actinobacterial and fungal communities was significantly altered by experimental nitrogen deposition, with more heterogeneity detected in both groups. Experimental N deposition significantly decreased the richness and diversity of ge

SUBMITTER: Eisenlord SD 

PROVIDER: S-EPMC3568582 | biostudies-literature | 2013 Feb

REPOSITORIES: biostudies-literature