Data/hora: 16/06/2024 10:41:48

Provedor de dados: | 5
País: | France
Título: | Studying the contribution of different fishing gears to the Sardinella small-scale fishery in Senegalese waters
Autores: | Diankha, Ousmane; Demarcq, Herve; Fall, Massal; Thiao, Djiga; Thiaw, Modou; Sow, Bamol Ali; Gaye, Amadou Thierno; Brehmer, Patrice.
Data: | 2017-08
Ano: | 2017
Palavras-chave: | Effects of fishing; Generalized additive model; Sardinella aurita; Sardinella maderensis; Purse seine; Surrounding gillnet; Senegal.
Resumo: | This study investigated variations of landings of two key species, Sardinella aurita and Sardinella maderensis, in Senegalese waters over a ten-year period (2004-2013). Using generalized additive models, it was found that fishing gear played a major role in explaining differences in monthly landings for both species (51-71% deviance explained). Its effect was more significant in the southern part of Senegal. Fishing effort (number of trips) accounted only for 4-18% of variability in landings. Purse seine (PS) fishing was the most important contributor to the landings of both species. In addition, in the southern area, surrounding gillnet fishing was also important for S. maderensis. Modeling results showed that the relationship between monthly effort and landings was generally positive and leveling off, while it was dome shaped for PSs and surrounding gillnets. Thus, when estimating fishing effort indices for management in Senegal, it is necessary to account for differences in fishing gears and the non-linear relationship between fishing effort and landings.
Tipo: | Text
Idioma: | Inglês

Identificador:

https://archimer.ifremer.fr/doc/00616/72808/72585.pdf

DOI:10.1051/alr/2017027

https://archimer.ifremer.fr/doc/00616/72808/

Editor: | Edp Sciences S A
Formato: | application/pdf
Fonte: | Aquatic Living Resources (0990-7440) (Edp Sciences S A), 2017-08 , Vol. 30 , N. 8 , P. 8p.

Fonte:

info:eu-repo/semantics/openAccess

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