Data/hora: 16/06/2024 08:48:05

Provedor de dados: | 5
País: | France
Título: | Répartition des foraminifères benthiques actuels sur le plateau continental sénégalais au sud de Dakar
Autores: | Redois, F; Debenay, Jp.
Data: | 1999-03
Ano: | 1999
Palavras-chave: | Foraminifère actuel; Plateau continental; Atlantique; Sénégal; Recent foraminifer; Continental shelf; Atlantic; Senegal.
Resumo: | Two hundred and twenty four benthic foraminiferal species were recognized in the total assemblages of fifty samples collected from the Senegalese continental shelf south of Dakar (down to a depth of 200 m). A factor analysis based on nineteen dominant species shows three main factors. The first two seem to be associated with temperature and its seasonal variations; they are depth-related and determine two main faunal changes. The third factor is substrate-related. The main depth-related species are: i) Cribrononion gerthi, Quinqueloculina akneriana, Quinqueloculina lamarckiana, Cribrolinoides curtus, Elphidium fichtellianum and Textularia sagittula in th coastal zone; ii) Discorbinella bertheloti, Cancris aff. C. sagrum, Textularia truncata, Nonion fabum, Bulimina elegans and Hanzawaia solei in the inner shelf; iii) Trifarina bradyana, Trifarina Fornasinii, Uvigerina peregrina and Cassidulina laevigata in the outer shelf. The species that are substrate-related are: i) N. fabum, B. elegans, C. gerthi and H. solei in the fine-grained sands and ii) Lobatula lobatula, C. curtus, T. sagittula and D. bertheloti in the coarse-grained sands. The reduction in planktonic percentage and diversity in the outer shelf are related to the upwelling seasonal influence.
Tipo: | Text
Idioma: | Francês

Identificador:

http://archimer.ifremer.fr/doc/00325/43622/43920.pdf

DOI:10.1016/S0399-1784(99)80047-4

http://archimer.ifremer.fr/doc/00325/43622/

Editor: | Gauthier-villars/editions Elsevier
Formato: | application/pdf
Fonte: | Oceanologica Acta (0399-1784) (Gauthier-villars/editions Elsevier), 1999-03 , Vol. 22 , N. 2 , P. 215-232

Fonte:

Elsevier, Paris / Ifremer / Cnrs / Ird

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