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Meiobenthic distribution and nematode community structure in five European estuaries OMA
Soetaert, K.; Vincx, M.; Wittoeck, J.; Tulkens, M..
Meiofauna from the intertidal zone of five European estuaries (Ems, Westerschelde, Somme, Gironde, Tagus) was investigated. Samples represented a cross section of various benthic habitats from near-freshwater to marine, from pure silts to fine-sandy bottoms. The meiobenthic community comprised everywhere a fauna strongly dominated by nematodes, with meiobenthic density increasing with increasing salinity. The Ems differed from the other estuaries due to the presence of a well developed community of Copepods, Gastrotrichs, large Ciliates and/or soft-shelled Foraminiferans in some sites. The Westerschelde stood out due to the near-absence of harpacticoid copepods and, as in the Tagus, the lower meiobenthic densities in the marine part of the estuary. For...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Estuaries Intertidal environment Marine invertebrates Meiobenthos Population density Species diversity Copepoda [copepods] Gastrotricha Nematoda [Nematodes] Polychaeta [Bristle worms] ANE; Ems Estuary ANE; France; Gironde Estuary ANE; France; Picardie; Somme Estuary ANE; Netherlands; Westerschelde Portugal; Tagus R..
Ano: 1995 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=8456
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Uptake of dissolved inorganic nitrogen in turbid, tidal estuaries OMA
Middelburg, J.J.; Nieuwenhuize, J..
Ammonium and nitrate uptake was measured in 6 European tidal estuaries (Ems, Rhine, Scheldt, Loire, Gironde and Douro) using <sup>15</sup>N-tracer techniques. Uptake rates of ammonium and nitrate ranged from 0.005 to 1.56 µmol N l<sup>-1</sup>h<sup>-1</sup> and 0.00025 to 0.25 µmol N l<sup>-1</sup> h<sup>-1</sup>, respectively, and differed significantly between and within estuaries. Analysis of nitrogen uptake using the relative preferential index (RPI) indicated ammonium to be the preferred substrate. The turnover times of particulate nitrogen (0.7 to 31 d) and dissolved ammonium (0.1 to 27 d) were similar to or shorter than estuarine-water residence times, whereas turnover times of dissolved...
Tipo: Info:eu-repo/semantics/article Palavras-chave: ANE; Ems Estuary ANE; France; Gironde Estuary ANE; France; Pays de Loire; Loire Estuary ANE; Netherlands; Rhine estuary ANE; Netherlands; Westerschelde ANE; Portugal; Douro Estuary.
Ano: 2000 URL: http://www.vliz.be/imisdocs/publications/144317.pdf
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Comparative study of the hyperbenthos of three European estuaries OMA
Mees, J.; Fockedey, N.; Hamerlynck, O..
The hyperbenthic fauna of the subtidal channels of the Eems (N. Netherlands), Westerschelde (S.W. Netherlands), and Gironde (S.W. France) estuaries was sampled within a 15-day period in summer 1991. In each estuary, quantitative samples were taken at regularly spaced stations covering the entire salinity gradient from marine conditions at the mouth to nearly freshwater conditions upstream. The diversity of the samples and the distribution of the species along the main estuarine gradients were assessed. Hyperbenthic communities were identified using different multivariate statistical techniques. The species composition and the density and biomass of the dominant species of each community were compared among communities.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Biological sampling Biomass Community composition Comparative studies Ecological distribution Estuaries Population density Salinity gradients Zoobenthos Mysidacea ANE; Ems Estuary ANE; France; Gironde Estuary ANE; Netherlands; Westerschelde.
Ano: 1995 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=5647
Registros recuperados: 3
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