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The Benguela ecosystem: part VI. Seabirds
Berruti, A.; Adams, N.J.; Jackson, S. (1989). The Benguela ecosystem: part VI. Seabirds. Oceanogr. Mar. Biol. Ann. Rev. 27: 273-335
In: Oceanography and Marine Biology: An Annual Review. Aberdeen University Press/Allen & Unwin: London. ISSN 0078-3218, more
Peer reviewed article  

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    Breeding; Ecological distribution; Literature reviews; Marine birds; Upwelling; Marine

Authors  Top 
  • Berruti, A.
  • Adams, N.J.
  • Jackson, S.

    The ecology of seabirds in the Benguela upwelling system off western southern Africa is reviewed. The marine avifauna comprises a distinctive assemblage of 12 breeding seabirds and 36 species which are regular non-breeding visitors. Research has concentrated on the resident seabirds, particularly on the interaction between the three most abundant species, the Cape gannet Morus capensis , jackass penguin, Spheniscus demersus , and Cape cormorant Phalacrocorax capensis, and their commercially-exploited fish prey, notably the pilchard Sardinops ocellatus and anchovy Engraulis japonicus capensis . Changes in the population sizes and the diets of these three species are consistent with changes in the catches of the purse-seine fisheries. The pelagic ecology of the non-breeding seabirds and the responses of seabirds to small-scale and mesoscale variability are poorly known. Bottom-trawling activities appear, however, to be an important determinant of the distribution of the larger non-breeding species.

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