Amazon forest response to CO2 fertilization dependent on plant phosphorus acquisition

16021 13 88153 3 251579 document 88153 26789_2_merged_1559831696.pdf application/pdf 8a4b4931457d75268435aef858d9bbff MD5 596585 2019-08-06 09:00:22 https://pure.iiasa.ac.at/id/eprint/16021/1/26789_2_merged_1559831696.pdf 16021 1 1 application/pdf text en public cc_by_nc_4

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accepted 88154 2 251582 document 88154 lightbox.jpg image/png ad72f2a99f7a3a5f2a87ffab13bf54f1 MD5 41184 2019-08-06 09:10:29 https://pure.iiasa.ac.at/id/eprint/16021/2/lightbox.jpg 16021 2 2 image/png other Thumbnails conversion from text to thumbnail_lightbox en staffonly

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http://eprints.org/relation/isVersionOf https://pure.iiasa.ac.at/id/document/88153 http://eprints.org/relation/isVolatileVersionOf https://pure.iiasa.ac.at/id/document/88153 http://eprints.org/relation/isIndexCodesVersionOf https://pure.iiasa.ac.at/id/document/88153 archive 353 disk0/00/01/60/21 2019-08-06 05:51:52 2024-09-09 12:45:58 2019-08-06 05:51:52 article show Fleischer K. Rammig A. De Kauwe M.G. Walker A.P. Domingues T.F. Fuchslueger L. Garcia S. Goll D.S. Grandis A. Jiang M. Haverd V. Hofhansl F. 2222 0000-0003-0073-0946 Holm J.A. Kruijt B. Leung F. Medlyn B.E. Mercado L.M. Norby R.J. Pak B. von Randow C. Quesada C.A. Schaap K.J. Valverde-Barrantes O.J. Wang Y.-P. Yang X. Zaehle S. Zhu Q. Lapola D.M. Amazon forest response to CO2 fertilization dependent on plant phosphorus acquisition pub prog_eep prog_esm Global terrestrial models currently predict that the Amazon rainforest will continue to act as a carbon sink in the future, primarily owing to the rising atmospheric carbon dioxide (CO2) concentration. Soil phosphorus impoverishment in parts of the Amazon basin largely controls its functioning, but the role of phosphorus availability has not been considered in global model ensembles—for example, during the Fifth Climate Model Intercomparison Project. Here we simulate the planned free-air CO2 enrichment experiment AmazonFACE with an ensemble of 14 terrestrial ecosystem models. We show that phosphorus availability reduces the projected CO2-induced biomass carbon growth by about 50% to 79 ± 63 g C m−2 yr−1 over 15 years compared to estimates from carbon and carbon–nitrogen models. Our results suggest that the resilience of the region to climate change may be much less than previously assumed. Variation in the biomass carbon response among the phosphorus-enabled models is considerable, ranging from 5 to 140 g C m−2 yr−1, owing to the contrasting plant phosphorus use and acquisition strategies considered among the models. The Amazon forest response thus depends on the interactions and relative contributions of the phosphorus acquisition and use strategies across individuals, and to what extent these processes can be upregulated under elevated CO2. 2019-08-05 published Nature Publishing Group 10.1038/s41561-019-0404-9 3022 public Nature Geoscience 12 736-741 TRUE 1752-0908 Effects of phosphorus limitations on Life, Earth system and Society (IMBALANCE-P, FP7 610028) Land use change: assessing the net climate forcing, and options for climate change mitigation and adaptation (LUC4C, FP7 603542) FALSE yes info:eu-repo/grantAgreement/EC/FP7/610028/EU/Effects of phosphorus limitations on Life, Earth system and Society/IMBALANCE-P; info:eu-repo/grantAgreement/EC/H2020/603542/EU//LUC4C info:eu-repo/semantics/article info:eu-repo/semantics/closedAccess