@article{fdi:010063646,
  title = {{S}patial and body-size dependent response of marine pelagic communities to projected global climate change},
  author = {{L}efort, {S}. and {A}umont, {O}livier and {B}opp, {L}. and {A}rsouze, {T}. and {G}ehlen, {M}. and {M}aury, {O}livier},
  editor = {},
  language = {{ENG}},
  abstract = {{T}emperature, oxygen, and food availability directly affect marine life. {C}limate models project a global warming of the ocean's surface (similar to+3 degrees {C}), a de-oxygenation of the ocean's interior (similar to-3%) and a decrease in total marine net primary production (similar to-8%) under the business as usual' climate change scenario ({RCP}8.5). {W}e estimated the effects of these changes on biological communities using a coupled biogeochemical ({PISCES}) - ecosystems ({APECOSM}) model forced by the physical outputs of the last generation of the {IPSL}-{CM} {E}arth {S}ystem {M}odel. {T}he {APECOSM} model is a size-structured bio-energetic model that simulates the 3{D} dynamical distributions of three interactive pelagic communities (epipelagic, mesopelagic, and migratory) under the effects of multiple environmental factors. {T}he {PISCES}-{APECOSM} model ran from 1850 to 2100 under historical forcing followed by {RCP}8.5. {O}ur {RCP}8.5 simulation highlights significant changes in the spatial distribution, biomass, and maximum body-size of the simulated pelagic communities. {B}iomass and maximum body-size increase at high latitude over the course of the century, reflecting the capacity of marine organisms to respond to new suitable environment. {A}t low- and midlatitude, biomass and maximum body-size strongly decrease. {I}n those regions, large organisms cannot maintain their high metabolic needs because of limited and declining food availability. {T}his resource reduction enhances the competition and modifies the biomass distribution among and within the three communities: the proportion of small organisms increases in the three communities and the migrant community that initially comprised a higher proportion of small organisms is favored. {T}he greater resilience of small body-size organisms resides in their capacity to fulfill their metabolic needs under reduced energy supply and is further favored by the release of predation pressure due to the decline of large organisms. {T}hese results suggest that small body-size organisms might be more resilient to climate change than large ones.},
  keywords = {biogeochemical model ; body-size of organisms ; climate change ; climate scenario ; high trophic level model ; pelagic communities ; trophic transfer},
  booktitle = {},
  journal = {{G}lobal {C}hange {B}iology},
  volume = {21},
  numero = {1},
  pages = {154--164},
  ISSN = {1354-1013},
  year = {2015},
  DOI = {10.1111/gcb.12679},
  URL = {https://www.documentation.ird.fr/hor/fdi:010063646},
}