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  Amazon forest response to CO2 fertilization dependent on plant phosphorus acquisition

Fleischer, K., Rammig, A., Kauwe, M. G. D., Walker, A. P., Domingues, T. F., Fuchslueger, L., et al. (2019). Amazon forest response to CO2 fertilization dependent on plant phosphorus acquisition. Nature Geoscience, 12(9), 736-741. doi:10.1038/s41561-019-0404-9.

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 Urheber:
Fleischer, Katrin, Autor
Rammig, Anja, Autor
Kauwe, Martin G. De, Autor
Walker, Anthony P., Autor
Domingues, Tomas F., Autor
Fuchslueger, Lucia, Autor
Garcia, Sabrina, Autor
Goll, Daniel S., Autor
Grandis, Adriana, Autor
Jiang, Mingkai, Autor
Haverd, Vanessa, Autor
Hofhansl, Florian, Autor
Holm, Jennifer A., Autor
Kruijt, Bart, Autor
Leung, Felix, Autor
Medlyn, Belinda E., Autor
Mercado, Lina M., Autor
Norby, Richard J., Autor
Pak, Bernard, Autor
von Randow, Celso, Autor
Quesada, Carlos A., AutorSchaap, Karst J., AutorValverde-Barrantes, Oscar J., AutorWang, Ying-Ping, AutorYang, Xiaojuan, AutorZaehle, Sönke1, 2, Autor           Zhu, Qing, AutorLapola, David M., Autor mehr..
Affiliations:
1Terrestrial Biosphere Modelling, Dr. Sönke Zähle, Department Biogeochemical Integration, Dr. M. Reichstein, Max Planck Institute for Biogeochemistry, Max Planck Society, ou_1938309              
2Terrestrial Biosphere Modelling, Dr. Sönke Zähle, Department Biogeochemical Integration, Prof. Dr. Martin Heimann, Max Planck Institute for Biogeochemistry, Max Planck Society, ou_1497787              

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 Zusammenfassung: 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.

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 Datum: 2019-08-052019-09
 Publikationsstatus: Erschienen
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 Identifikatoren: Anderer: BGC3114
DOI: 10.1038/s41561-019-0404-9
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Titel: Nature Geoscience
Genre der Quelle: Zeitschrift
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Ort, Verlag, Ausgabe: London : Nature Publishing Group
Seiten: - Band / Heft: 12 (9) Artikelnummer: - Start- / Endseite: 736 - 741 Identifikator: ISSN: 1752-0894
CoNE: https://pure.mpg.de/cone/journals/resource/1752-0894