{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,20]],"date-time":"2026-03-20T02:48:43Z","timestamp":1773974923760,"version":"3.50.1"},"reference-count":49,"publisher":"Wiley","issue":"10","license":[{"start":{"date-parts":[[2013,6,7]],"date-time":"2013-06-07T00:00:00Z","timestamp":1370563200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Global Ecology and Biogeography"],"published-print":{"date-parts":[[2013,10]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Aim<\/jats:title><jats:p>While soil microorganisms play key roles in <jats:styled-content style=\"fixed-case\">E<\/jats:styled-content>arth's biogeochemical cycles, methodological constraints and sparse data have hampered our ability to describe and understand the global distribution of soil microbial biomass. Here, we present a comprehensive quantification of the environmental drivers of soil microbial biomass.<\/jats:p><\/jats:sec><jats:sec><jats:title>Location<\/jats:title><jats:p>Global.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>We used a comprehensive global dataset of georeferenced soil microbial biomass estimates and high\u2010resolution climatic and soil data.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>We show that microbial biomass carbon (<jats:styled-content style=\"fixed-case\">C<jats:sub>Mic<\/jats:sub><\/jats:styled-content>) is primarily driven by moisture availability, with this single variable accounting for 34% of the global variance. For the microbial carbon\u2010to\u2010soil organic carbon ratio (<jats:styled-content style=\"fixed-case\">C<jats:sub>Mic<\/jats:sub><\/jats:styled-content>\/<jats:styled-content style=\"fixed-case\">C<jats:sub>Org<\/jats:sub><\/jats:styled-content>), soil nitrogen content was an equally important driver as moisture. In contrast, temperature was not a significant predictor of microbial biomass patterns at a global scale, while temperature likely has an indirect effect on microbial biomass by influencing rates of evapotranspiration and decomposition. As our models explain an unprecedented 50% of the global variance of <jats:styled-content style=\"fixed-case\">C<jats:sub>Mic<\/jats:sub><\/jats:styled-content> and <jats:styled-content style=\"fixed-case\">C<jats:sub>Mic<\/jats:sub><\/jats:styled-content>\/<jats:styled-content style=\"fixed-case\">C<jats:sub>Org<\/jats:sub><\/jats:styled-content>, we were able to leverage gridded environmental information to build the first spatially explicit global estimates of microbial biomass and quantified the global soil microbial carbon pool to equal 14.6 <jats:styled-content style=\"fixed-case\">Pg C<\/jats:styled-content>.<\/jats:p><\/jats:sec><jats:sec><jats:title>Main Conclusions<\/jats:title><jats:p>Our unbiased models allowed us to build the first global spatially explicit predictions of microbial biomass. These patterns show that soil microbial biomass is not primarily driven by temperature, but instead, biomass is more heterogeneous through the effects of moisture availability and soil nutrients. Our global estimates provide important data for integration into large\u2010scale carbon and nutrient models that may imply a major step forward in our ability to predict the global carbon balance, now and in a future climate.<\/jats:p><\/jats:sec>","DOI":"10.1111\/geb.12070","type":"journal-article","created":{"date-parts":[[2013,6,7]],"date-time":"2013-06-07T09:33:25Z","timestamp":1370597605000},"page":"1162-1172","source":"Crossref","is-referenced-by-count":316,"title":["Global drivers and patterns of microbial abundance in soil"],"prefix":"10.1111","volume":"22","author":[{"given":"Hector M.","family":"Serna\u2010Chavez","sequence":"first","affiliation":[{"name":"Department of Ecological Science VU University Amsterdam  De Boelelaan 1085 1081 HV Amsterdam The Netherlands"},{"name":"Department of Life Sciences University of Coimbra  P3004\u2010517 Coimbra Portugal"}]},{"given":"Noah","family":"Fierer","sequence":"additional","affiliation":[{"name":"Department of Ecology and Evolutionary Biology and the Cooperative Institute for Research in Environmental Sciences University of Colorado  Boulder CO 80309 USA"}]},{"given":"Peter M.","family":"van Bodegom","sequence":"additional","affiliation":[{"name":"Department of Ecological Science VU University Amsterdam  De Boelelaan 1085 1081 HV Amsterdam The Netherlands"}]}],"member":"311","published-online":{"date-parts":[[2013,6,7]]},"reference":[{"key":"e_1_2_6_2_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0065-2504(08)60016-1"},{"key":"e_1_2_6_3_1","volume-title":"Crop evapotranspiration \u2013 guidelines for computing crop water requirements \u2013 FAO Irrigation and drainage paper 56","author":"Allen 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