Microbial respiration and substrate weight loss—I: A general model of the influences of abiotic variables |
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| Authors: | FL Bunnell DEN Tait PW Flanagan K Van Clever |
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| Institution: | 1. Faculty of Forestry, University of British Columbia, Vancouver, B.C. V6T 1W5, Canada;2. Department of Biology, University of Alaska, Fairbanks, Alaska 99701, U.S.A.;3. Forest Soils Laboratory, University of Alaska, Fairbanks, Alaska 99701, U.S.A. |
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| Abstract: | A general model of the influences of abiotic variables on microbial respiration and substrate weight loss is presented. The model, a complex hypothesis relating microbial respiration to temperature. moisture, O2 and substrate, “explains” 71–96% of the variation in aerobic respiration rates measured from a variety of natural substrates. The model can project seasonal patterns of weight loss and thus permits evaluation of laboratory respirometry against field measures using litter bags. Using data from several countries simulated losses due to microbial respiration are 70–90% of the measured litter bag loss. |
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