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| Deschemin, Karine. |
| Le but de la présente étude est la recherche des causes des mortalités survenues pendant l'été 1992 au sein des populations de la coque Cerastoderma edule du Banc d'Arguin. Pour cela, une étude a porté sur les parasitoses pouvant être rencontrées chez C.edule, et une autre a eu pour objet l'étude des facteurs environnementaux. Les résultats de l'étude histo-pathologique a pennis de montrer que les coques sont infestés notamment par le Trématode Labratema minimus, mais ni le taux d'infestation ni les caractéristiques de l'invasion parasitaire peuvent laisser pressager un lien quelconque avec les mortalités constatées. Les analyses en composantes principales menées sur l'ensemble des paramètres hydrologiques étudiés ont pennis de mettre en évidence que 1992... |
| Tipo: Text |
Palavras-chave: Mortalités; Banc d'Arguin; Cerastoderma edule; Parasitisme; Environnement. |
| Ano: 1993 |
URL: http://archimer.ifremer.fr/doc/00430/54132/55459.pdf |
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| Compton, Tanya J.; Troost, Tineke A.; Van Der Meer, Jaap; Kraan, Casper; Honkoop, Pieter J. C.; Rogers, Danny I.; Pearson, Grant B.; De Goeij, Petra; Bocher, Pierrick; Lavaleye, Marc S. S.; Leyrer, Jutta; Yates, Mick G.; Dekinga, Anne; Piersma, Theunis. |
| Diverse species assemblages are often associated with a diversity of habitat structures. Sedimentary systems seem to be no exception, as within sedimentary systems benthic species diversity within a sample point appears to correlate with sediment grain size complexity. However, it remains to be shown whether total benthic species diversity relates to a system's sediment heterogeneity across multiple systems. In the present paper we examined whether bivalve diversity is associated with: (1) sediment heterogeneity across systems and (2) sediment grain size complexity within systems, at 9 temperate and tropical tidal flat systems. Although bivalve life-history strategies, like post-settlement habitat selection, might suggest that sediment heterogeneity should... |
| Tipo: Text |
Palavras-chave: Aiguillon Bay; Marennes Oleron Bay; Mont Saint Michel Bay; Wadden Sea; The Wash; Roebuck Bay; Banc d'Arguin; Sediment diversity. |
| Ano: 2008 |
URL: http://archimer.ifremer.fr/doc/2008/publication-6141.pdf |
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| Wijnsma, G; Wolff, Wj; Meijboom, A; Duiven, P; De Vlas, J. |
| The Banc d'Arguin in Mauritania, West Africa, is an area of tidal flats and shallow inshore waters bordering the sandy desert of the Sahara. The project Banc d'Arguin 1985-1986 investigated predominantly benthic biomass and production, the same data allow investigation of the species diversity and the distribution of the tidal flat fauna of the Banc d'Arguin. We sieved and analysed 410 core samples (diameter 10 cm) from 82 locations with 0.6 mm mesh size. A total of 111 taxa were identified. Polychaeta were most diverse with 42 species belonging to 20 families. Other large species groups were Gastropoda (20 species, 14 families), Amphipoda (14 taxa, 8 families) and Bivalvia (15 species, 10 families). Densities ranged from 152 to 5635 ind. m(-2), with an... |
| Tipo: Text |
Palavras-chave: Banc d'Arguin; Bethos; Diversité; Limicole; Banc d'Arguin; Benthos; Diversity; Shorebirds. |
| Ano: 1999 |
URL: http://archimer.ifremer.fr/doc/00325/43623/43309.pdf |
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| Carlier, Antoine; Chauvaud, Laurent; Van Der Geest, Matthijs; Le Loc'H, Francois; Le Duff, Michel; Vernet, Marc; Raffray, Jean; Diakhate, Djibril; Labrosse, Pierre; Wague, Abdoulaye; Le Goff, Clement; Gohin, Francis; Chapron, Bertrand; Clavier, Jacques. |
| Banc d’Arguin (BA), Mauritania, is a nationally protected shallow gulf > 10,000 km2 between the Sahara desert and the upwelling system off the Mauritanian coast. In the southeast, BA consists of a 500 km2 tidal flat, the most important wintering site for shorebirds using the East Atlantic Flyway. The Mauritanian upwelling-driven phytoplankton production supports the most productive fisheries worldwide, but little is known about its trophic role in the functioning of the inshore BA food web. Using stable isotopes as trophic tracers to distinguish between upwelling-driven phytoplankton, open ocean phytoplankton, and benthic primary producers, we assessed the spatial extent to which the inshore BA food web is fuelled by upwelling-driven phytoplankton... |
| Tipo: Text |
Palavras-chave: Banc d'Arguin; West Africa; Food web structure; Remote sensing; Stable isotope; Upwelling. |
| Ano: 2015 |
URL: https://archimer.ifremer.fr/doc/00269/37999/36078.pdf |
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