Microbial biomass,functional capacity,and community structure after 12 years of soil warming |
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| Authors: | S.D. Frey R. Drijber H. Smith J. Melillo |
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| Affiliation: | 1. Department of Natural Resources and the Environment, University of New Hampshire, Durham, NH 03824, USA;2. Department of Agronomy, University of Nebraska–Lincoln, Lincoln, NE 68583, USA;3. The Ecosystem Center, Woods Hole Marine Biological Laboratory, Woods Hole, MA 02543, USA |
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| Abstract: | We examined the effect of chronic soil warming on microbial biomass, functional capacity, and community structure in soil samples collected from the Soil Warming Study located at the Harvard Forest Long-term Ecological Research (LTER) site. Twelve years of chronic soil warming at 5 °C above the ambient temperature resulted in a significant reduction in microbial biomass and the utilization of a suite of C substrates which included amino acids, carbohydrates, and carboxylic acids. Heating significantly reduced the abundance of fungal biomarkers. There was also a shift in the mineral soil microbial community towards gram positive bacteria and actinomycetes. |
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