@article{fdi:010072864,
  title = {{T}he impact of variable phytoplankton stoichiometry on projections of primary production, food quality, and carbon uptake in the global ocean},
  author = {{K}wiatkowski, {L}. and {A}umont, {O}livier and {B}opp, {L}. and {C}iais, {P}.},
  editor = {},
  language = {{ENG}},
  abstract = {{O}cean biogeochemical models are integral components of {E}arth 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. {I}n such models the stoichiometry of phytoplankton {C}:{N}:{P} is typically fixed at the {R}edfield ratio. {T}he observed stoichiometry of phytoplankton, however, has been shown to considerably vary from {R}edfield values due to plasticity in the expression of phytoplankton cell structures with different elemental compositions. {T}he intrinsic structure of fixed {C}:{N}:{P} models therefore has the potential to bias projections of the marine response to climate change. {W}e assess the importance of variable stoichiometry on 21st century projections of net primary production, food quality, and ocean carbon uptake using the recently developed {P}elagic {I}nteractions {S}cheme for {C}arbon and {E}cosystem {S}tudies {Q}uota ({PISCES}-{QUOTA}) ocean biogeochemistry model. {T}he 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. {G}lobal phytoplankton {N} and {P} content or food quality is projected to decline by 1.2% and 6.4% over the 21st century, respectively. {T}he largest reductions in food quality are in the oligotrophic subtropical gyres and {A}rctic {O}cean where declines by the end of the century can exceed 20%. {U}sing 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 {P}g{C}).},
  keywords = {ocean biogeochemistry ; variable stoichiometry ; ocean carbon uptake ; primary production ; food quality},
  booktitle = {},
  journal = {{G}lobal {B}iogeochemical {C}ycles},
  volume = {32},
  numero = {4},
  pages = {516--528},
  ISSN = {0886-6236},
  year = {2018},
  DOI = {10.1002/2017gb005799},
  URL = {https://www.documentation.ird.fr/hor/fdi:010072864},
}