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Titlebook: Ecological Studies in the Coastal Waters of Mauritania; Proceedings of a Sym W. J. Wolff,J. Land,P. A. W. J. Wilde Conference proceedings 1

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发表于 2025-3-21 16:57:35 | 显示全部楼层 |阅读模式
书目名称Ecological Studies in the Coastal Waters of Mauritania
副标题Proceedings of a Sym
编辑W. J. Wolff,J. Land,P. A. W. J. Wilde
视频video
丛书名称Developments in Hydrobiology
图书封面Titlebook: Ecological Studies in the Coastal Waters of Mauritania; Proceedings of a Sym W. J. Wolff,J. Land,P. A. W. J. Wilde Conference proceedings 1
描述This volume on the ecology of Mauritanian coastal waters and inparticular the Banc d‘Arguin, allows us to understand the functioningof this remarkable coastal wetland. Major questions concern theinteraction between the Banc d‘Arguin ecosystem on the one hand andthe adjoining systems of the open ocean with its intensive upwellingphenomena and the Sahara desert on the other. Is the Banc d‘Arguinecosystem relatively isolated from its surroundings and does itfunction as a tropical pocket in a more temperate surrounding, assuggested by Sevrin-Reyssac (1983); or does it interact with both theSahara and the Atlantic Ocean?.At the Banc d‘Arguin, the area between the estuarine parts and theopen ocean is extremely shallow and largely uncharted. Large researchvessels cannot penetrate the shallows, whereas small vessels are oftenunable to negotiate the outer part of the shallow area due to roughweather conditions. Hence, separate teams report on work at theseaward side of this shallow sill and at the landward side. Inaddition, other teams address different questions, such as theproductivity of the seagrass beds and the benthic fauna, the number ofbirds spending the summer at the Banc d‘Arguin,
出版日期Conference proceedings 1993
关键词biomass; desert; ecology; ecosystem; fauna; fish; invertebrates; ocean; plankton; pollution; sponges; temperatu
版次1
doihttps://doi.org/10.1007/978-94-011-1986-3
isbn_softcover978-94-010-4877-4
isbn_ebook978-94-011-1986-3
copyrightSpringer Science+Business Media Dordrecht 1993
The information of publication is updating

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发表于 2025-3-21 20:17:37 | 显示全部楼层
,Wind, surface water temperature, surface salinity and pollution in the area of the Banc d’Arguin, Mr wind speed and direction. Average wind speed reaches a maximum in May-June (9m s.) and a minimum in November-December (6 m s.). About 85% of the time winds blow from northerly directions. Based on a data set collected since 1952 maps of surface water temperatures are constructed. Based on these ma
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,Hydrographical observations west of the Banc d’Arguin, Mauritania, in May 1988,uring the first leg of the Dutch Mauritania Expedition in May 1988 with the R/V ‘TYRO’ and comprise measurements of water temperature (T), salinity (S) and dissolved oxygen contents (O.) in the area off the Banc d’Arguin. The time of investigation fell in the transitional period between the cold and
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Heavy metals (Cu, Zn, Pb, Cd) in sediment, Zooplankton and epibenthic invertebrates from the area osediment. No significant geographical trend in the metal concentrations of the surface sediments was found, nor a correlation between concentrations in bulk sediment as well as in the silt fraction and the % silt could be established. In general, the metal concentrations in both bulk sediment and si
发表于 2025-3-22 13:49:52 | 显示全部楼层
,Leaf dynamics and standing stocks of intertidal , Hornem. and , (Ucria) Ascherson on the Banc d’Argd September 1988. Standing stocks of . Hörnern, suggest a unimodal seasonal curve similar to what is found for populations at higher latitudes. Also, leaf growth rates (0.03 cm. cm. day. on average) were similar to those found at higher latitudes in these months. Variation in leaf loss over tidal de
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Primary production and distribution of phytopigments in the water column and sediments on the upwelduction was also measured and sedimentation of organic matter was estimated using moored sediment traps. On the basis of simultaneous hydrographic measurements, two water types could be distinguished. Upwelling water covered the southern shelf and the outer part of the northern shelf. The other wate
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,The benthic infauna and benthic respiration off the Banc d’Arguin (Mauritania, Northwest Africa), Banc d’Arguin. The main emphasis of the present paper is put on the macrobenthos, but results of a gross analysis of the meibenthos are discussed as well. Macrofaunal and meiofaunal density showed no consistent decrease with distance from the shore. The composition of the macrofauna taxa appeared t
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