%0 Journal Article %T Fertile forests produce biomass more efficiently %+ Department of Biology %+ Laboratoire des Sciences du Climat et de l'Environnement [Gif-sur-Yvette] (LSCE) %+ Centre de Recerca Ecològica i Aplicacions Forestals (CREAF) %+ department of biology %+ Institute of Arctic Biology %+ ICOS-ATC (ICOS-ATC) %+ University of York [York, UK] %+ Swedish University of Agricultural Sciences (SLU) %+ Johann Heinrich von Thünen Institut %+ Oregon State University (OSU) %+ School of Geography and the Environment [Oxford] (SoGE) %+ Università degli studi della Tuscia [Viterbo] %+ Peking University [Beijing] %+ Max Planck Institute for Biogeochemistry (MPI-BGC) %A Vicca, S. %A Luyssaert, S. %A Peñuelas, J. %A Campioli, M. %A Chapin, F.S., Iii %A Ciais, P. %A Heinemeyer, A. %A Högberg, P. %A L. Kutsch, W. %A E. Law, B. %A Malhi, Y. %A Papale, D. %A L. Piao, S. %A Reichstein, M. %A D. Schulze, E. %A A. Janssens, I. %< avec comité de lecture %@ 1461-023X %J Ecology Letters %I Wiley %V 15 %P 520-526 %8 2012 %D 2012 %R 10.1111/j.1461-0248.2012.01775.x %K global forest database %K biomass production %K photosynthesis %K biomass production 42 efficiency %K carbon allocation %K nutrients %K root symbionts %Z Environmental SciencesJournal articles %X Trees with sufficient nutrition are known to allocate carbon preferentially to aboveground plant parts. Our global study of 49 forests revealed an even more fundamental carbon allocation response to nutrient availability: forests with high-nutrient availability use 58 $\pm$ 3% (mean $\pm$ SE; 17 forests) of their photosynthates for plant biomass production (BP), while forests with low-nutrient availability only convert 42 $\pm$ 2% (mean ± SE; 19 forests) of annual photosynthates to biomass. This nutrient effect largely overshadows previously observed differences in carbon allocation patterns among climate zones, forest types and age classes. If forests with low-nutrient availability use 16 $\pm$ 4% less of their photosynthates for plant growth, what are these used for? Current knowledge suggests that lower BP per unit photosynthesis in forests with low- versus forests with high-nutrient availability reflects not merely an increase in plant respiration, but likely results from reduced carbon allocation to unaccounted components of net primary production, particularly root symbionts. %G English %2 https://cea.hal.science/cea-00853260/document %2 https://cea.hal.science/cea-00853260/file/adInfo.pdf %L cea-00853260 %U https://cea.hal.science/cea-00853260 %~ SDE %~ CEA %~ INSU %~ CNRS %~ OPENAIRE %~ GIP-BE %~ ERC-CEA %~ UVSQ %~ LSCE %~ LSCE-CEA %~ GS-GEOSCIENCES