The spatial factor, rather than elevated CO₂, controls the soil bacterial community in a temperate Forest Ecosystem.

ABSTRACT: The global atmospheric carbon dioxide (CO₂) concentration is expected to increase continuously over the next century. However, little is known about the responses of soil bacterial communities to elevated CO₂ in terrestrial ecosystems. This study aimed to partition the relative influences of CO₂, nitrogen (N), and the spatial factor (different sampling plots) on soil bacterial communities at the free-air CO₂ enrichment research site in Duke Forest, North Carolina, by two independent techniques: an entirely sequencing-based approach and denaturing gradient gel electrophoresis. Multivariate regression tree analysis demonstrated that the spatial factor could explain more than 70% of the variation in soil bacterial diversity and 20% of the variation in community structure, while CO₂ or N treat

SUBMITTER: Ge Y 

PROVIDER: S-EPMC2976193 | biostudies-literature | 2010 Nov

REPOSITORIES: biostudies-literature