@inproceedings{fdi:010078266,
  title = {{A} promising effect of {E}l {N}iño on sardinella distribution along the northwest {A}frican coast : a potential source of seasonal predictability ? [r{\'e}sum{\'e}]},
  author = {{L}opez-{P}arages, {J}. and {R}odriguez de {F}onseca, {M}.{B}. and {B}rochier, {T}imoth{\'e}e and {A}uger, {P}ierre-{A}ma{\¨e}l and {Z}anchettin, {D}. and {R}ubino, {A}. and {G}aetan, {C}. and {K}eenlyside, {N}.},
  editor = {},
  language = {{ENG}},
  abstract = {{M}any questions remain open concerning the effect of environmental variability on abundance and distribution dynamics of round sardinella ({S}ardinella aurita) over the {C}anary upwelling system. {T}his issue is of special relevance due to the great role that sardinella plays in northwest {A}frican fisheries and marine ecosystems. {H}ere, the possible climate drivers of sardinella population migration along the northwest {A}frica are addressed. {T}o this aim, we have used data provided by the coupled model compounded by the {R}egional {O}ceanic {M}odelling {S}ystem {ROMS}, configured for the northwest {A}frican upwelling system, and by the biogeochemical model {PISCES}, which simulates plankton productivity and carbon biomass based upon the main nutrients. {T}his coupled model has been run over the period 1980-2009 using an atmospheric reanalysis and consistent oceanic boundary conditions. {F}inally, an evolutionary individual-based {L}agrangian model has been used to simulate the spatio-temporal behaviour of sardinella according to the environmental constraints obtained from {ROMS}-{PISCES}. {S}trikingly, a robust anomalous increase (decrease) of sardinella biomass has been identified from early to late winter off {C}ape {B}lanc ({S}aharan coast) in response to the {P}acific {E}l {N}iño conditions. {T}his dipolar pattern reflects an alteration of the normal migration of sardinella between the {S}aharan and the {M}auritanian waters and seems to be primarily mediated by the effect that {E}l {N}iño-related anomalous winds has on the meridional currents along the northwest {A}frican coast. {T}his sardinella response to {E}l {N}iño is reinforced in late winter through an anomalous warming of the {M}auritanian waters due to an anomalous weakening of coastal upwelling also forced by the aforementioned {E}l {N}iño-related anomalous winds. {A}ccording to our results this anomalous response of sardinella biomass might be predicted, for {E}l {N}iño years, few months in advance from the {E}l {N}iño-related {SST} patterns. {T}his fact opens the possibility to the development of predictive tools, which should be necessarily assessed in further works.},
  keywords = {{AFRIQUE} {DE} {L}'{OUEST} ; {AFRIQUE} {DU} {NORD} ; {ATLANTIQUE} ; {SAHARA} ; {CANARIES}},
  numero = {},
  pages = {126},
  booktitle = {{I}nternational conference {ICAWA} 2017 and 2018 : extended book of abstract : the {AWA} project : ecosystem approach to the management of fisheries and the marine environment in {W}est {A}frican waters},
  year = {2019},
  ISBN = {978-9553602-0-06},
  URL = {https://www.documentation.ird.fr/hor/fdi:010078266},
}