Plant diversity predicts beta but not alpha diversity of soil microbes across grasslands worldwide

Ecology Letters
By: , and 

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Abstract

Aboveground–belowground interactions exert critical controls on the composition and function of terrestrial ecosystems, yet the fundamental relationships between plant diversity and soil microbial diversity remain elusive. Theory predicts predominantly positive associations but tests within single sites have shown variable relationships, and associations between plant and microbial diversity across broad spatial scales remain largely unexplored. We compared the diversity of plant, bacterial, archaeal and fungal communities in one hundred and forty-five 1 m2 plots across 25 temperate grassland sites from four continents. Across sites, the plant alpha diversity patterns were poorly related to those observed for any soil microbial group. However, plant beta diversity (compositional dissimilarity between sites) was significantly correlated with the beta diversity of bacterial and fungal communities, even after controlling for environmental factors. Thus, across a global range of temperate grasslands, plant diversity can predict patterns in the composition of soil microbial communities, but not patterns in alpha diversity.

Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Plant diversity predicts beta but not alpha diversity of soil microbes across grasslands worldwide
Series title Ecology Letters
DOI 10.1111/ele.12381
Volume 18
Issue 1
Year Published 2015
Language English
Publisher Wiley
Contributing office(s) Forest and Rangeland Ecosystem Science Center
Description 11 p.
First page 85
Last page 95
Other Geospatial Africa, Australia, Europe, North America
Online Only (Y/N) N
Additional Online Files (Y/N) N