RT Journal Article
T1 Dynamics of anchovy and sardine populations in the Canary Current off NW Africa: responses to environmental and climate forcing in a climate-to-fish ecosystem model.
A1 Sánchez-Garrido, José Carlos
A1 Fiechter, Jerome
A1 Rose, Kenneth
A1 Werner, Francisco
A1 Curchitser, Enrique
K1 Anchoas - Ecología -  Modelos matemáticos
K1 Sardinas - Ecología - Modelos matemáticos
AB A 50-year-long (1958–2008) historical simulation of a climate-to-fish ecosystem model for anchovy (Eugralis encrasicolus) and sardine (Sardina pilchardus) populations in the upwelling ecosystem off NW Africa is revisited and analyzed. Anchovy and sardine annual adult abundances were correlated at interannual and decadal time scales in the historical run. A three-step analysis method applied unraveled the environmental and life stage-specific drivers underlying the bottom-up mechanisms responsible for the simulated variability in anchovy and sardine populations. Changes in anchovy adult abundance were primarily controlled by larval survival, prey availability, and local upwelling strength, whereas sardine adult abundance was controlled by age-1 growth affecting age-2 fecundity and egg production via prey availability. Despite different diet preferences, the common sensitivity of anchovy and sardine to prey availability had a synchronizing effect on the two populations, with both anchovy and sardine doing better during years of higher plankton biomass and colder ocean temperatures. Analysis of potential links with modes of climate variability showed that anchovy dynamics were more tightly connected to the AMO while sardine dynamics were correlated to the NAO. This difference stemmed from the vulnerability of the anchovy population to enhanced coastal upwelling causing increased larval drift mortality. Finally, based on an earlier, similar modeling study for the Californian anchovy and Pacific sardine, we argue that the relatively warmer habitat off NW Africa compared to the coastal region off central California is a key feature explaining synchronous populations in the Canary Current versus out-of-phase anchovy and sardine cycles in the California Current.
PB Wiley
YR 2020
FD 2020-10-28
LK https://hdl.handle.net/10630/29771
UL https://hdl.handle.net/10630/29771
LA eng
NO Sánchez-Garrido, J. C., Fiechter, J., Rose, K. A., Werner, F. E., and Curchitser, E. N. (2021). Dynamics of anchovy and sardine populations in the Canary Current off NW Africa: responses to environmental and climate forcing in a climate-to-fish ecosystem model. Fish. Oceanogr. 30, 232–252. doi: 10.1111/fog.12516
NO Política de acceso abierto tomada de: https://v2.sherpa.ac.uk/id/publication/13942
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 21 ene 2026