@article{fdi:010086143,
  title = {{U}nderstanding the drivers of fish variability in an end-to-end model of the {N}orthern {H}umboldt {C}urrent {S}ystem},
  author = {{C}ruz, {M}. {H}. and {F}renger, {I}. and {G}etzlaff, {J}. and {K}riest, {I}. and {X}ue, {T}. {F}. and {S}hin, {Y}unne-{J}ai},
  editor = {},
  language = {{ENG}},
  abstract = {{T}he {N}orthern {H}umboldt {C}urrent {S}ystem is the most productive eastern boundary upwelling system, generating about 10 % of the global fish production, mainly coming from small pelagic fish. {I}t is bottom-up and top-down affected by environmental and anthropogenic variability, such as {E}l-{N}ino {S}outhern {O}scillation and fishing pressure, respectively. {T}he high variability of small pelagic fish in this system, as well as their economic importance, call for a careful management aided by the use of end-to-end models. {T}his type of models represent the ecosystem as a whole, from the physics, through plankton up to fish dynamics. {I}n this study, we utilised an end-to-end model consisting of a physical-biogeochemical model ({CROCO}-{B}io{EBUS}) coupled one-way with an individual-based fish model ({OSMOSE}). {W}e investigated how time-variability in plankton food production affects fish populations in {OSMOSE} and contrasted it against the sensitivity of the model to two parameters with high uncertainty: the plankton accessibility to fish and fish larval mortality. {R}elative interannual variability in the modelled fish is similar to plankton variability. {I}t is, however, small compared with the high variability seen in fish observations in this productive ecosystem. {I}n contrast, changes in larval mortality have a strong effect on anchovies. {I}n {OSMOSE}, it is a common practice to scale plankton food for fish, accounting for processes that may make part of the total plankton in the water column unavailable. {W}e suggest that this scaling should be done constant across all plankton groups when previous knowledge on the different availabilities is lacking. {I}n addition, end-to-end modelling systems should consider environmental impacts on other biological processes such as larval mortality in order to better capture the interactions between environmental processes, plankton and fish.},
  keywords = {{E}cosystem modelling ; {OSMOSE} ; {E}nd-to-end model ; {CROCO} ; {B}io{EBUS} ; {N}orthern {H}umboldt {C}urrent {S}ystem ; {E}astern boundary upwelling system ; {F}isheries ; {H}igher trophic levels ; {T}rophic interactions ; physical-biogeochemical model ; {PACIFIQUE} ; {HUMBOLDT} {COURANT}},
  booktitle = {},
  journal = {{E}cological {M}odelling},
  volume = {472},
  numero = {},
  pages = {110097 [16 ]},
  ISSN = {0304-3800},
  year = {2022},
  DOI = {10.1016/j.ecolmodel.2022.110097},
  URL = {https://www.documentation.ird.fr/hor/fdi:010086143},
}