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	Provedor de dados ArchiMer (2) Autor Brehmer, Patrice (2) Auger, Pierre-amael (1) Ba, Kamarel (1) Balde, Bocar Sabaly (1) Brochier, Timothee (1) Diankha, Ousmane (1) Diouf, Malick (1) Ekau, Werner (1) Fall, Massal (1) Faye, Saliou (1) Kantoussan, Justin (1) Ngom, Fambaye (1) Sow, Fambaye N. (1) Thiaw, Modou (1) Mais... Palavra-chave Small pelagic (2) Climatic change (1) Data poor fisheries (1) Environmental variability (1) Oceanography (1) Sardinella aurita (1) Sardinella maderensis (1) Size structure (1) Small-scale fisheries (1) Spawning period (1) West Africa (1) Mais... Tipo do documento Text (2) Ano 2019 (1) 2017 (1) País France (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Variability of key biological parameters of round sardinella Sardinella aurita and the effects of environmental changes ArchiMer Balde, Bocar Sabaly; Sow, Fambaye N.; Ba, Kamarel; Ekau, Werner; Brehmer, Patrice; Kantoussan, Justin; Fall, Massal; Diouf, Malick. We examined growth rates and reproductive characteristics of Sardinella aurita off Senegal and other coastal areas over a 20 year period (1995-2014) to determine how they relate to variations in environmental characteristics of coastal waters. Based on fish length-frequency data and a coastal upwelling index, we found that S. aurita recruitment tends to occur during the periods of most intensive upwelling (March-April off Senegal). Peak reproduction corresponds to periods of low sea-surface temperature (in February or March). The sex ratio was remarkably consistent during the 30 year study period and so was not affected by environmental changes. We hypothesise that S. aurita takes advantage of the higher zooplankton productivity that occurs in coastal... Tipo: Text Palavras-chave: Data poor fisheries; Environmental variability; Size structure; Small pelagic; Spawning period; West Africa. Ano: 2019 URL: https://archimer.ifremer.fr/doc/00491/60229/67183.pdf Effect of environmental conditions on the seasonal and inter-annual variability of small pelagic fish abundance off North-West Africa: The case of both Senegalese sardinella ArchiMer Thiaw, Modou; Auger, Pierre-amael; Ngom, Fambaye; Brochier, Timothee; Faye, Saliou; Diankha, Ousmane; Brehmer, Patrice. The objective of this study was to assess the effect of environmental variations on the abundance of Sardinella aurita and Sardinella maderensis in Senegalese waters in the upwelling system. Monthly data indicating the abundance of sardinella were first estimated from commercial statistics, using Generalized Linear Model from 1966 to 2011. Abundance indices (AIs) were then compared with environmental indices, at the local scale, a Coastal Upwelling Index (CUI) and a coastal Sea Surface Temperature (SST) index, and on a large scale, the North Atlantic Oscillation (NAO), the Atlantic Multidecadal Oscillation (AMO) and the Multivariate El Nino Southern Oscillation Index (MEI), using correlations and times series analyses. The results showed that the abundance... Tipo: Text Palavras-chave: Climatic change; Oceanography; Sardinella aurita; Sardinella maderensis; Small pelagic; Small-scale fisheries. Ano: 2017 URL: https://archimer.ifremer.fr/doc/00611/72307/71213.pdf Registros recuperados: 2 Primeira ... 1 ... Última

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