@article{fdi:010067793,
  title = {{E}ffects of lower trophic level biomass and water temperature on fish communities : a modelling study},
  author = {{G}uiet, {J}{\'e}r{\^o}me and {A}umont, {O}livier and {P}oggiale, {J}. {C}. and {M}aury, {O}livier},
  editor = {},
  language = {{ENG}},
  abstract = {{P}hysical and biogeochemical changes of the oceans have complex influences on fish communities. {V}ariations of resource and temperature affect metabolic rates at the individual level, biomass fluxes at the species level, and trophic structure as well as diversity at the community level. {W}e use a {D}ynamic {E}nergy {B}udget-, trait-based model of the consumers' community size-spectrum to assess the effects of lower trophic level biomass and water temperature on communities at steady state. {F}irst, we look at the stressors separately in idealized simulations, varying one while the second remains constant. {A} multi-domain response is observed. {L}inked to the number of trophic levels sustained in the consumers' community, the regimes highlighted present similar properties when lower trophic level biomass is increased or temperature decreased. {T}hese trophic-length domains correspond to different efficiencies of the transfer of biomass from small to large individuals. {T}hey are characterized by different sensitivities of fish communities to environmental changes. {M}oreover, differences in the scaling of individuals' metabolism and prey assimilation with temperature lead to a shrinking of fish communities with warming. {I}n a second step, we look at the impact of simultaneous variations of stressors along a mean latitudinal gradient of lower trophic level biomass and temperature. {T}he model explains known observed features of global marine ecosystems such as the fact that larger species compose fish communities when latitude increases. {T}he structure, diversity and metabolic properties of fish communities obtained with the model at different latitudes are interpreted in light of the different trophic-length domains characterized in the idealized experiments. {F}rom the equator to the poles, the structure of consumers' communities is predicted to be heterogeneous, with variable sensitivities to environmental changes.},
  keywords = {},
  booktitle = {},
  journal = {{P}rogress in {O}ceanography},
  volume = {146},
  numero = {},
  pages = {22--37},
  ISSN = {0079-6611},
  year = {2016},
  DOI = {10.1016/j.pocean.2016.04.003},
  URL = {https://www.documentation.ird.fr/hor/fdi:010067793},
}