Macroecological rules predict how biomass scales with species richness in nature

• 成果类型: Article
• 署名作者: Pigot, Alex L.; Dee, Laura E.; Richardson, Anthony J.; Cooper, Declan L. M.; Eisenhauer, Nico; Gregory, Richard D.; Lewis, Simon L.; Macgregor, Callum J.; Massimino, Dario; Maynard, Daniel S.; Phillips, Helen R. P.; Rillo, Marina; Loreau, Michel; Haegeman, Bart
• 署名单位: University of London; University College London; University of Colorado System; University of Colorado Boulder; University of Queensland; Commonwealth Scientific & Industrial Research Organisation (CSIRO); CSIRO Environment; University of London; University College London; German Research Foundation (DFG); German Centre for Integrative Biodiversity Research (iDiv); Leipzig University; Royal Society for Protection of Birds; University of Leeds; British Trust for Ornithology; Royal Netherlands Academy of Arts & Sciences; Netherlands Institute of Ecology (NIOO-KNAW); Saint Marys University - Canada; University of Helsinki; Carl von Ossietzky Universitat Oldenburg; Centre National de la Recherche Scientifique (CNRS); Peking University; Sorbonne Universite; Centre National de la Recherche Scientifique (CNRS)
• 刊物名称: SCIENCE
• ISSN/ISSBN: 0036-13580
• DOI: 10.1126/science.adq3278
• 发表日期: 2025-03-21
• 页码: 1272-1276
• 关键词: body-size; plant diversity; r package; biodiversity; PRODUCTIVITY; abundance; Extrapolation; rarefaction; patterns; linking

摘要

Despite advances in theory and experiments, how biodiversity influences the structure and functioning of natural ecosystems remains debated. By applying new theory to data on 84,695 plant, animal, and protist assemblages, we show that the general positive effect of species richness on stocks of biomass, as well as much of the variation in the strength and sign of this effect, is predicted by a fundamental macroecological quantity: the scaling of species abundance with body mass. Standing biomass increases with richness when large-bodied species are numerically rare but is independent of richness when species size and abundance are uncoupled. These results suggest a new fundamental law in the structure of ecological communities and show that the impacts of changes in species richness on biomass are predictable.