Despite strong seasonal responses, soil microbial consortia are more resilient to long-term changes in rainfall than overlying grassland
- 12 March 2009
- journal article
- research article
- Published by Oxford University Press (OUP) in The ISME Journal
- Vol. 3 (6), 738-744
- https://doi.org/10.1038/ismej.2009.16
Abstract
Climate change impacts on soil microbial communities could alter the structure of terrestrial ecosystems and biogeochemical cycles of the Earth. We used 16S rRNA gene microarrays to evaluate changes in the composition of grassland soil microbial communities under rainfall amendments simulating alternative climate change scenarios, and to compare these to responses of overlying plants and invertebrates. Following 5 years of rainfall manipulation, soil bacteria and archaea in plots where natural rain was supplemented differed little from ambient controls, despite profound treatment-related changes in the overlying grassland. During the sixth and seventh year, seasonal differences in bacterial and archaeal assemblages emerged among treatments, but only when watering exacerbated or alleviated periods of particularly aberrant conditions in the ambient climate. In contrast to effects on plants and invertebrates, effects on bacteria and archaea did not compound across seasons or years, indicating that soil microbial communities may be more robust than associated aboveground macroorganisms to certain alterations in climate.Keywords
This publication has 46 references indexed in Scilit:
- Urban aerosols harbor diverse and dynamic bacterial populationsProceedings of the National Academy of Sciences of the United States of America, 2007
- Ecological and Evolutionary Responses to Recent Climate ChangeAnnual Review of Ecology, Evolution, and Systematics, 2006
- Fifteen years of climate change manipulations alter soil microbial communities in a subarctic heath ecosystemGlobal Change Biology, 2006
- Application of a High-Density Oligonucleotide Microarray Approach To Study Bacterial Population Dynamics during Uranium Reduction and ReoxidationApplied and Environmental Microbiology, 2006
- Role of Land-Surface Changes in Arctic Summer WarmingScience, 2005
- Diversity and Productivity in a Long-Term Grassland ExperimentScience, 2001
- Bulk and Rhizosphere Soil Bacterial Communities Studied by Denaturing Gradient Gel Electrophoresis: Plant-Dependent Enrichment and Seasonal Shifts RevealedApplied and Environmental Microbiology, 2001
- Diversity and Seasonal Fluctuations of the Dominant Members of the Bacterial Soil Community in a Wheat Field as Determined by Cultivation and Molecular MethodsApplied and Environmental Microbiology, 2001
- Microbial diversity, producer–decomposer interactions and ecosystem processes: a theoretical modelProceedings Of The Royal Society B-Biological Sciences, 2001
- Non‐parametric multivariate analyses of changes in community structureAustralian Journal of Ecology, 1993