气候变化领域集成服务门户(CCPortal): The Impact of Variable Phytoplankton Stoichiometry on Projections of Primary Production, Food Quality, and Carbon Uptake in the Global Ocean

CCPortal

DOI	10.1002/2017GB005799
	The Impact of Variable Phytoplankton Stoichiometry on Projections of Primary Production, Food Quality, and Carbon Uptake in the Global Ocean
	Kwiatkowski L.; Aumont O.; Bopp L.; Ciais P.
发表日期	2018
ISSN	0886-6236
EISSN	1944-9224
起始页码	516
结束页码	528
卷号	32 期号:4
英文摘要	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. All Rights Reserved.
英文关键词	food quality; ocean biogeochemistry; ocean carbon uptake; primary production; variable stoichiometry
语种	英语
scopus关键词	biogeochemistry; biological uptake; carbon budget; carbon sink; climate change; ecological impact; food quality; global ocean; isotopic composition; marine ecosystem; net primary production; oligotrophic environment; phytoplankton; primary production; Redfield ratio; stoichiometry; subtropical region; Arctic Ocean; Pisces
来源期刊	Global Biogeochemical Cycles
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/129844
作者单位	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
推荐引用方式 GB/T 7714	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],2018,32(4).
APA	Kwiatkowski L.,Aumont O.,Bopp L.,&Ciais P..(2018).The Impact of Variable Phytoplankton Stoichiometry on Projections of Primary Production, Food Quality, and Carbon Uptake in the Global Ocean.Global Biogeochemical Cycles,32(4).
MLA	Kwiatkowski L.,et al."The Impact of Variable Phytoplankton Stoichiometry on Projections of Primary Production, Food Quality, and Carbon Uptake in the Global Ocean".Global Biogeochemical Cycles 32.4(2018).