caa a22 4500 605516960 CHVBK 20210128100717.0 cr unu---uuuuu 210128e20150201xx s 000 0 eng 10.1007/s10533-014-0058-z doi (NATIONALLICENCE)springer-10.1007/s10533-014-0058-z Scaling microbial biomass, metabolism and resource supply [Elektronische Daten] [Robert Sinsabaugh, Jennifer Shah, Stuart Findlay, Kevin Kuehn, Daryl Moorhead] The microbiome concept has drawn attention to the complex signal and syntrophic networks that underlie microbial community organization. This self-organization may lead to patterns in the allometric scaling of microbial community metabolism that differ from those of macrobial communities. Using meta-analyses, we analyzed the power scaling relationships between community production, respiration, extracellular enzyme activity and biomass for bacteria and fungi across aquatic and terrestrial ecosystems. The scaling exponents for community production versus biomass for fungi and bacteria were 0.85±0.06 (95%CI) and 0.72±0.07, respectively. The scaling exponent for fungal respiration versus production was 0.61±0.06. Previous studies reported exponents of 0.41, 0.44 and 0.58 for bacterial respiration versus production. Carbon use efficiency increased with biomass for both fungi and bacteria with an exponent of 0.27±0.06. The potential activities of four widely measured extracellular enzymes were directly related to community production with power scaling exponents of 1.0-1.2. The frequency distribution of biomass turnover times (median 112h for bacteria and 1,128h for fungi) overlapped substantially with those for environmental substrate turnover, presented in a prior analysis of extracellular enzyme kinetics. These metabolic relationships, which have scaling exponents of 0.5, are linked by the ratio of assimilation to carbon use efficiency. This connection ties ecological stoichiometry and metabolic theory to microbial community homeostasis. At the ecosystem scale, allometry of microbial communities has similarities to that of eusocial insects but differs from that of plant communities, perhaps as a result of proto-cooperative processes that contribute to microbial community organization. Springer International Publishing Switzerland, 2014 Carbon use efficiency nationallicence Ecological stoichiometry nationallicence Ecosystem allometry nationallicence Extracellular enzymes nationallicence Microbial biomass nationallicence Microbial metabolism nationallicence Sinsabaugh Robert Biology Department, University of New Mexico, 87131, Albuquerque, NM, USA aut Shah Jennifer Biology Department, University of New Mexico, 87131, Albuquerque, NM, USA aut Findlay Stuart Cary Institute of Ecosystem Studies, 12545, Millbrook, NY, USA aut Kuehn Kevin Department of Biological Sciences, University of Southern Mississippi, 39406, Hattiesburg, MS, USA aut Moorhead Daryl Department of Environmental Science, University of Toledo, 43606, Toledo, OH, USA aut Biogeochemistry Springer International Publishing 122/2-3(2015-02-01), 175-190 0168-2563 122:2-3<175 2015 122 10533 https://doi.org/10.1007/s10533-014-0058-z text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10533-014-0058-z text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Sinsabaugh Robert Biology Department, University of New Mexico, 87131, Albuquerque, NM, USA aut NATIONALLICENCE 700 1- Shah Jennifer Biology Department, University of New Mexico, 87131, Albuquerque, NM, USA aut NATIONALLICENCE 700 1- Findlay Stuart Cary Institute of Ecosystem Studies, 12545, Millbrook, NY, USA aut NATIONALLICENCE 700 1- Kuehn Kevin Department of Biological Sciences, University of Southern Mississippi, 39406, Hattiesburg, MS, USA aut NATIONALLICENCE 700 1- Moorhead Daryl Department of Environmental Science, University of Toledo, 43606, Toledo, OH, USA aut NATIONALLICENCE 773 0- Biogeochemistry Springer International Publishing 122/2-3(2015-02-01), 175-190 0168-2563 122:2-3<175 2015 122 10533