@inproceedings{fdi:010072128, title = {{I}nfluence of fine scale processes on fish larvae retention in the {S}enegalese upwelling region [r{\'e}sum{\'e}]}, author = {{M}baye, {B}.{C}. and {N}doye, {S}. and {C}apet, {X}. and {M}achu, {E}ric}, editor = {}, language = {{ENG}}, abstract = {{M}esoscale physical processes can affect the fate and distribution of fish eggs and larvae by aggregating and retaining them in favorable habitats or spreading them away to inappropriate areas. {H}ere we examined the effect of fine scale processes on fish larval retention through a biophysical model of the early life stages of {S}ardinella aurita taken as an example within the {S}enegalese upwelling region. {A} set of 3 {ROMS} configurations is used from coarser (~ 9km, 7.5km) to finer (~ 2km) resolution. {T}he {ICHTHYOP} individual based model is then forced by the different model experiments. {T}o take into account more realistic physical forcing, the finer resolution configuration was used to test the effect of synoptic winds and tides. {W}e first show that a finer resolution of physical processes provides a retention twice stronger. {I}n addition that experiment shows 2 contrasted results in the region which differ from previous modelling work : 1) the northern domain considered so far as a low retention area displays high retention values and 2) a better resolution of the hydrodynamic of the {S}enegalese shelf modifies significantly the retention spatial patterns in the southern area although the seasonality remains similar. {S}imulation using synoptic winds and tidal forcing suggest a reduction of retention induced by a higher larval mortality due to enhanced export transport and stronger lethal temperature exposure.}, keywords = {{AFRIQUE} {DE} {L}'{OUEST} ; {SENEGAL} ; {ATLANTIQUE}}, numero = {}, pages = {83}, booktitle = {{I}nternational conference {ICAWA} 2016 : 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 = {2017}, ISBN = {978-2-9553602-0-5}, URL = {https://www.documentation.ird.fr/hor/fdi:010072128}, }