gchange  > 气候变化事实与影响
DOI: 10.1002/2017GB005799
Scopus ID: 2-s2.0-85044845218
Title:
The Impact of Variable Phytoplankton Stoichiometry on Projections of Primary Production, Food Quality, and Carbon Uptake in the Global Ocean
Author: Kwiatkowski L; , Aumont O; , Bopp L; , Ciais P
Source Publication: Global Biogeochemical Cycles
ISSN: 8866236
Indexed By: SCI ; SCI-E
Publishing Year: 2018
Language: 英语
Keyword: Food quality ; Ocean biogeochemistry ; Ocean carbon uptake ; Primary production ; Variable stoichiometry
English Abstract: Ocean biogeochemical models are integral components of Earth system models used to project the evolution of the ocean carbon sink, as well as potential changes in the physical and chemical environment of marine ecosystems. In such models the stoichiometry of phytoplankton C:N:P is typically fixed at the Redfield ratio. The observed stoichiometry of phytoplankton, however, has been shown to considerably vary from Redfield values due to plasticity in the expression of phytoplankton cell structures with different elemental compositions. The intrinsic structure of fixed C:N:P models therefore has the potential to bias projections of the marine response to climate change. We assess the importance of variable stoichiometry on 21st century projections of net primary production, food quality, and ocean carbon uptake using the recently developed Pelagic Interactions Scheme for Carbon and Ecosystem Studies Quota (PISCES-QUOTA) ocean biogeochemistry model. The model simulates variable phytoplankton C:N:P stoichiometry and was run under historical and business-as-usual scenario forcing from 1850 to 2100. PISCES-QUOTA projects similar 21st century global net primary production decline (7.7%) to current generation fixed stoichiometry models. Global phytoplankton N and P content or food quality is projected to decline by 1.2% and 6.4% over the 21st century, respectively. The largest reductions in food quality are in the oligotrophic subtropical gyres and Arctic Ocean where declines by the end of the century can exceed 20%. Using the change in the carbon export efficiency in PISCES-QUOTA, we estimate that fixed stoichiometry models may be underestimating 21st century cumulative ocean carbon uptake by 0.5-3.5% (2.0-15.1 PgC). ©2018. American Geophysical Union.
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被引频次[WOS]:3   [查看WOS记录]     [查看WOS中相关记录]
Document Type: 期刊论文
Identifier: http://119.78.100.177/globalchange/handle/2HF3EXSE/77675
Appears in Collections:气候变化事实与影响

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Affiliation: Laboratoire des Sciences du Climat et de l'Environnement, IPSL, CEA/CNRS/UVSQ Gif-sur-Yvette France; Laboratoire d'Océanographie et de Climatologie: Expérimentation et Approches Numériques, IPSL, CNRS/UPMC/IRD/MNHN Paris France; Laboratoire de Météorologie Dynamique (LMD/IPSL), CNRS/Ecole Normale Supérieure Paris Cedex 05 France

Recommended Citation:
Kwiatkowski L,, Aumont O,, Bopp L,et al. The Impact of Variable Phytoplankton Stoichiometry on Projections of Primary Production, Food Quality, and Carbon Uptake in the Global Ocean[J]. Global Biogeochemical Cycles,2018-01-01
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