@inproceedings{fdi:010091463,
  title = {{T}oward new scenario on small pelagic fish spatial population dynamics related on both hydrodynamic and biogeochemical simulations [r{\'e}sum{\'e}]},
  author = {{B}rochier, {T}imoth{\'e}e and {A}uger, {P}.{A}. and {B}rehmer, {P}atrice and {C}apet, {X}. and {L}ett, {C}hristophe and {M}achu, {E}ric and {M}baye, {B}.{C}. and {P}ecquerie, {L}aure and {T}hiaw, {M}. and {B}raham, {C}.{B}. and {E}ttahiri, {O}. and {C}harouki, {N}. and {V}erley, {P}hilippe},
  editor = {},
  language = {{ENG}},
  abstract = {{S}mall pelagic fish species are keystones species in upwelling ecosystems because they are dominant in biomass and they transfer energy from low trophic levels to top predators. {U}pwelling ecosystems are often referred to as "wasp-waist" because only a few small pelagic species are present and operate this transfer. {T}he atmospheric variability usually causes high fluctuation in the upwelling intensity, duration and extent. {T}he responses of the small pelagic fish species to this variability is complex. {T}his complexity integrates mainly fish migration, larval retention, predation, competition, fishing, food, oxygen and temperature limitations. {A} growing number of studies have shown that it is now possible to capture a large part of this complexity with spatially explicit biophysical individual-based models forced with accurate hydrodynamic and biogeochemical simulations of their environment. {A}pplying a systematic sensitivity test to such a model can give important insight into the main drivers of the small pelagic fish biomass variability. {H}ere we describe such a generic model that can be adapted for different small pelagic fish species and geographical areas. {I}t is a full life cycle multi-generational model, which allows us to study age truncation effects, homing behaviour and evolutionary effects. {A}s an illustration, we present results obtained for the {S}ardinella aurita population off {N}orth-{W}est {A}frica, the main small pelagic fish species in the region. {T}he hydrodynamic and biogeochemical environment were simulated by the coupled regional models ({ROMS}-{PISCES}) in a configuration covering the area 05°-40°{N} and 05°-30°{W}, with a ~8 km resolution over three decade(1980-2009). {W}e argue that this approach is well-suited to data poor ecosystems. {I}ndeed, the needs for a new species/area configuration mainly consist in (1) an accurate, i.e ?validated?, inter-annual hydrodynamic and biogeochemical simulations of the environment; (2) specific {D}ynamic {E}nergy {B}udget parameters; and (3) simple rules to reproduce fish schools kinematics. {T}he whole provides a new framework to analyse observed fish spatio-temporal distribution and biomass complexity. {S}uch issue can be achieved by confrontation between the different scales and aspect the modelled fish populations and the one found in the observations through the {P}attern {O}riented {M}odelling approach.},
  keywords = {{AFRIQUE} {DE} {L}'{OUEST} ; {ATLANTIQUE}},
  numero = {},
  pages = {34},
  booktitle = {{PREFACE}-{PIRATA}-{CLIVAR} {T}ropical {A}tlantic {V}ariability {C}onference},
  year = {2015},
  URL = {https://www.documentation.ird.fr/hor/fdi:010091463},
}