FN Archimer Export Format PT J TI On the robustness of an eastern boundary upwelling ecosystem exposed to multiple stressors BT AF Diogoul, Ndague Brehmer, Patrice Demarcq, Herve El Ayoubi, Salaheddine Thiam, Abou Sarre, Abdoulaye Mouget, Anne Perrot, Yannick AS 1:1,2,5;2:1,2;3:3;4:4;5:5;6:1;7:2;8:2; FF 1:;2:;3:;4:;5:;6:;7:;8:; C1 Institut Sénégalais de Recherches agricoles (ISRA), Centre de Recherches Océanographiques de Dakar-Thiaroye (CRODT), Dakar, Senegal IRD, CNRS, Univ Brest, Ifremer, DR Ouest, Lemar, Plouzané, France IRD, IFREMER, CNRS, Univ Montpellier, Marbec, Sète, France Institut National de Recherche Halieutique INRH, Agadir, Morocco University Cheikh Anta Diop (UCAD), Institute of Environmental Science (ISE), BP 5005, Dakar, Senegal C2 ISRA, SENEGAL IRD, FRANCE IRD, FRANCE INRH, MOROCCO UNIV CHEIKH ANTA DIOP (UCAD), SENEGAL UM LEMAR MARBEC IN WOS Cotutelle UMR DOAJ copubli-int-hors-europe copubli-sud IF 4.997 TC 8 UR https://archimer.ifremer.fr/doc/00676/78789/81019.pdf https://archimer.ifremer.fr/doc/00676/78789/81020.pdf https://archimer.ifremer.fr/doc/00676/78789/83148.pdf LA English DT Article AB The resistance of an east border upwelling system was investigated using relative index of marine pelagic biomass estimates under a changing environment spanning 20-years in the strongly exploited southern Canary Current Large marine Ecosystem (sCCLME). We divided the sCCLME in two parts (north and south of Cap Blanc), based on oceanographic regimes. We delineated two size-based groups (“plankton” and “pelagic fish”) corresponding to lower and higher trophic levels, respectively. Over the 20-year period, all spatial remote sensing environmental variables increased significantly, except in the area south of Cap Blanc where sea surface Chlorophyll-a concentrations declined and the upwelling favorable wind was stable. Relative index of marine pelagic abundance was higher in the south area compared to the north area of Cap Blanc. No significant latitudinal shift to the mass center was detected, regardless of trophic level. Relative pelagic abundance did not change, suggesting sCCLME pelagic organisms were able to adapt to changing environmental conditions. Despite strong annual variability and the presence of major stressors (overfishing, climate change), the marine pelagic ressources, mainly fish and plankton remained relatively stable over the two decades, advancing our understanding on the resistance of this east border upwelling system. PY 2021 PD JAN SO Scientific Reports SN 2045-2322 PU Springer Science and Business Media LLC VL 11 IS 1 UT 000612982200051 DI 10.1038/s41598-021-81549-1 ID 78789 ER EF