%0 Conference Proceedings
%9 ACTI : Communications avec actes dans un congrès international
%A Tiedemann, M.
%A Fock, H.
%A Brehmer, Patrice
%A Döring, J.
%A Börner, G.
%A Dove, S.
%A Ekau, W.
%A Möllmann, C.
%T Hydrographic control on larval fish assemblages : lessons from the Canary current ecosystem [résumé]
%S International conference ICAWA 2017 and 2018 : extended book of abstract : the AWA project : ecosystem approach to the management of fisheries and the marine environment in West African waters
%C [s.l.]
%D 2019
%E Brehmer, Patrice
%E Diogoul, N.
%E Zenk, C.
%E Vareilles, M. de
%E Keenlyside, N.
%E Nascimento, J.M.
%E Ramos, V. M.
%E Sow, B.A.
%E Fock, H.
%E Schmidt, J.
%E Ekau, W.
%E Mbaye, A.
%E Fall. A.
%E Monteiro, I.
%E Kouassi, A.M.
%E Silva, O.
%E Brochier, Timothée
%E Sall. M.
%E Mayif, M.
%E Koné, V.
%E Gorgues, Thomas
%E Ferreira Santos, C.
%E Bamy, I.L.
%E Barry, I.
%E Sidibe, M.
%E Diadhou, H.
%L fdi:010078264
%G ENG
%I SRFC/CSRP ; IRD
%@ 978-9553602-0-06
%K AFRIQUE DE L'OUEST ; ATLANTIQUE ; CANARIAS
%K CANARIES
%P 123
%U https://www.documentation.ird.fr/hor/fdi:010078264
%> https://horizon.documentation.ird.fr/exl-doc/pleins_textes/divers20-05/010078264.pdf
%W Horizon (IRD)
%X Fronts, eddies, and upwelling shape larval fish habitats in the Canary Current Ecosystem. In the last five years, five sea-going expeditions have been undertaken to investigate the influence of these ocean processes on the life of fishes and their early life stages. The use of different sampling techniques (e.g. midi/maxi multinet, GULF VII, and CTD) allowed us to understand horizontal and vertical larval fish distribution patterns. Frontal zones that function as natural barrier for plankton drift were identified enabling the formation of spatially segregated larval fish assemblages. Mesoscale eddies compensated an offshore drift of water masses during the upwelling process retaining fish larvae at the shelf break. An upwelling intensity driven spatio-temporal niche partitioning was observed between larval round sardinella (Sardinella aurita) and larval European sardine (Sardina pilchardus). While climate models predict a change of the upwelling intensity in upwelling ecosystems, we suggest that dominance relationships of small pelagic fishes will fluctuate according to upwelling intensity variation. The results of our studies improve the understanding of how fishes avail the dominant physical features in upwelling ecosystems and aid to comprehend population dynamics.
%B ICAWA : International Conference AWA
%8 2018/04/17-20
%$ 030 ; 034 ; 021