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Download Ecological Studies in the Coastal Waters of Mauritania: by J. Sevrin-Reyssac (auth.), W. J. Wolff, J. van der Land, P. PDF

By J. Sevrin-Reyssac (auth.), W. J. Wolff, J. van der Land, P. H. Nienhuis, P. A. W. J. de Wilde (eds.)

This quantity at the ecology of Mauritanian coastal waters and specifically the Banc d'Arguin, permits us to appreciate the functioning of this notable coastal wetland. significant questions drawback the interplay among the Banc d'Arguin surroundings at the one hand and the adjacent platforms of the open ocean with its in depth upwelling phenomena and the Sahara wasteland at the different. Is the Banc d'Arguin environment really remoted from its atmosphere and does it functionality as a tropical pocket in a extra temperate surrounding, as recommended via Sevrin-Reyssac (1983); or does it have interaction with either the Sahara and the Atlantic Ocean?
on the Banc d'Arguin, the realm among the estuarine components and the open ocean is intensely shallow and mostly uncharted. huge study vessels can't penetrate the shallows, while small vessels are frequently not able to barter the outer a part of the shallow quarter because of tough climatic conditions. therefore, separate groups document on paintings on the seaward aspect of this shallow sill and on the landward facet. furthermore, different groups handle diversified questions, reminiscent of the productiveness of the seagrass beds and the benthic fauna, the variety of birds spending the summer season on the Banc d'Arguin, and the distribution of a number of taxonomic teams of plants and fauna.

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Read Online or Download Ecological Studies in the Coastal Waters of Mauritania: Proceedings of a Symposium held at Leiden, The Netherlands 25–27 March 1991 PDF

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Additional info for Ecological Studies in the Coastal Waters of Mauritania: Proceedings of a Symposium held at Leiden, The Netherlands 25–27 March 1991

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C. Dugdale & D. W. Stuart, G. W. Heburn, 1981. Physical and Biological Structure and Variability in an Upwelling Center off Peru Near 15 S. In F. A. ), Coastal Upwelling. Am. Geophys. : 473-496. Kuipers, B. , H. J. Witte & S. R. Gonzalez, 1993. Zooplankton distribution in the coastal upwelling system along the Banc d'Arguin, Mauritania. Hydrobiologia 258: 133149. , 1988. Evolution de l'Hydroclimat et les Conditions Hydrologiques dans la ZEE Mauritanienne en 1979-1987. In Rapport du Groupe de Travail CNROPCRODTjISRA sur les Ressources Pelagiques Cotieres (Mauritanie-Senegal), 8-16 Juin 1988, Nouadhibou Mauritanie, Annexe V: 55-73.

Distribution of the principal characteristics of water at 30 m depth in the period 13-29 May. a. temperature c. crt. d. dissolved oxygen in ml 1- 1. °e. b. salinity. 31 zone changed from north to south. 6a-9a) the steepest gradients of temperature, salinity and oxygen, created by the water rising from the deeper layers, were registered at the depth of 50-60 m. This upwelling water did not reach beyond the 50 m isobath on the shelf. Along the section at 20 ° 00' N (Fig. 6b-9b) upwelling water was found nearer to the surface and reaching depths at the shelf of less than 30 m.

Salinity-distribution along three sections at different latitudes. a. at 20 0 40' Non 10 May. b. at 20 0 00' Non 11 May. c. at 19 0 20' Non 13 May. 27 Or-~--------~------~ -110 E -1110 -200 ' -__--L_____________-l 17 51W Fig. 8. ut-distribution along three sections at different latidues. a. at 20 0 40' N on 10 May. b. at 20 0 00' N on 11 May. c. at 19 0 20' Non 13 May. the form of cells where temperature and salinity values deviate from surrounding conditions by up to 1 °C and 1 respectively (Peters, 1976).

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