@article{fdi:010071240, title = {{D}oes upwelling intensity determine larval fish habitats in upwelling ecosystems ? {T}he case of {S}enegal and {M}auritania}, author = {{T}iedemann, {M}. and {F}ock, {H}. {O}. and {B}rehmer, {P}atrice and {D}oring, {J}. and {M}ollmann, {C}.}, editor = {}, language = {{ENG}}, abstract = {{E}uropean sardine ({S}ardina pilchardus) and round sardinella ({S}ardinella aurita) comprise two-thirds of total landings of small pelagic fishes in the {C}anary {C}urrent {E}astern {B}oundary {E}cosystem ({CCEBE}). {T}heir spawning habitat is the continental shelf where upwelling is responsible for high productivity. {W}hile upwelling intensity is predicted to change through ocean warming, the effects of upwelling intensity on larval fish habitat expansion is not well understood. {L}arval habitat characteristics of both species were investigated during different upwelling intensity regimes. {T}hree surveys were carried out to sample fish larvae during cold (permanent upwelling) and warm (low upwelling) seasons along the southern coastal upwelling area of the {CCEBE} (13 degrees-22.5 degrees {N}). {S}ardina pilchardus larvae were observed in areas of strong upwelling during both seasons. {L}arval habitat expansion was restricted from 22.5 degrees {N} to 17.5 degrees {N} during cold seasons and to 22.5 degrees {N} during the warm season. {S}ardinella aurita larvae were observed from 13 degrees {N} to 15 degrees {N} during cold seasons and 16-21 degrees {N} in the warm season under low upwelling conditions. {G}eneralized additive models predicted upwelling intensity driven larval fish abundance patterns. {O}bservations and modeling revealed species-specific spawning times and locations, that resulted in a niche partitioning allowing species' co-existence. {A}lterations in upwelling intensity may have drastic effects on the spawning behavior, larval survival, and probably recruitment success of a species. {T}he results enable insights into the spawning behavior of major small pelagic fish species in the {CCEBE}. {U}nderstanding biological responses to physical variability are essential in managing marine resources under changing climate conditions.}, keywords = {{C}anary {C}urrent {L}arge {M}arine {E}cosystem ; fish larvae ; generalized additive models ; {N}orthwest {A}frica ; {S}ardina pilchardus ; {S}ardinella aurita ; small pelagic fish ; upwelling index ; {SENEGAL} ; {MAURITANIE}}, booktitle = {}, journal = {{F}isheries {O}ceanography}, volume = {26}, numero = {6}, pages = {655--667}, ISSN = {1054-6006}, year = {2017}, DOI = {10.1111/fog.12224}, URL = {https://www.documentation.ird.fr/hor/fdi:010071240}, }