@inproceedings{fdi:010089464, title = {{A}coustics surveys in {N}orth-{W}est {A}frica reveal a spatial shift of small pelagic fish related to intense warming [r{\'e}sum{\'e}]}, author = {{S}arre, {A}. and {D}emarcq, {H}erv{\'e} and {K}eenlyside, {N}. and {K}rakstad, {J}.{O}. and {E}l {A}youbi, {S}. and {J}eyid, {A}.{M}. and {F}aye, {S}. and {M}baye, {A}. and {S}idibeh, {M}. and {B}rehmer, {P}atrice}, editor = {}, language = {{ENG}}, abstract = {{I}n the southern part of the {CCLME}, northward shifts in the distribution of sardinella and other species have been attributed to an intense warming trend in sea surface temperature. {S}uch warming is higher than 0.5 °{C} per decade in the southern part of the {CCLME}, the greatest in-crease in {SST} observed in the tropical {A}tlantic. {T}he acoustics abundance of {S}ardinella aurita, the most abundant species along the coast, has increased in the subtropics and fallen in the inter-tropical region. {S}mall pelagic acoustics assessment surveys confirm a robust northward shift of around 180 km per decade in {S}. aurita habitat, while {S}. maderensis did not move significantly. {S}patial shifts in biomass from 70 to 230 kilometres were observed for six others exploited small pelagic species during the last 20 years, at similar ranges to those recorded for surface isotherms in their habitat. {T}he change occurs more quickly in the central part of the {CCLME}. {T}his shift widely overlaps national boundaries and combined to overexploitation adds a new threat on the pelagic fish resources. {S}uch results are an advocacy to continue to lead acoustics survey on small pelagic in the {W}est {A}frica.}, keywords = {{ATLANTIQUE} ; {AFRIQUE} {DE} {L}'{OUEST} ; {ZONE} {TROPICALE}}, volume = {4}, numero = {54}, pages = {32--33}, booktitle = {{W}orking group of fisheries acoustics, science and technology ({WGFAST})}, year = {2022}, ISSN = {2618-1371}, URL = {https://www.documentation.ird.fr/hor/fdi:010089464}, }