Consulta: subjectFacets:"Lagune côtière"
Registros recuperados: 3
Data/hora: 16/06/2024 14:49:36

Spatial heterogeneity in the distribution of plants and benthic invertebrates in the lagoon of Orbetello (Italy)
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: De Biasi, Am; Benedetti-cecchi, L; Pacciardi, L; Maggi, E; Vaselli, S; Bertocci, I.
Many studies in marine coastal lagoons have focused on the marine-to-terrestrial gradient as a main source of variation for the structure of assemblages. In this paper, the magnitude of differences among locations arranged along the marine-to-terrestrial gradient of the western lagoon of Orbetello (Grosseto, Italy) was contrasted with the amount of spatial variability occurring among sets of locations that were not positioned along this axis. We propose that if the most important processes influencing assemblages were those associated with the external-internal gradient of the lagoon, as usually supposed, then assemblages should differ more among these locations than among any other locations. To test the above proposition, four locations arranged along...
Tipo: Text
Palavras-chave: Hétérogénéité spatiale; Phyto- et zoo-benthos; Lagune côtière; Méditerranée occidentale; Spatial heterogeneity; Phytozoobenthos; Coastal lagoon; Western Mediterranean.
Ano: 2003
URL: http://archimer.ifremer.fr/doc/00322/43283/43018.pdf

Accumulation des sels nutritifs dans un sédiment lagunaire et environnement hydrodynamique
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Gomez, E; Millet, B; Picot, B.
The Mejean-Perols Lagoon is situated on the French Mediterranean coast. It is a small (747 ha) and shallow (70 cm) lagoon. Some treated effluent from Montpellier flows into this hypereutrophic lagoon. The cartography of C, N and P concentrations in the sediment was studied based on 35 bottom samples. The nitrogen and organic carbon concentrations were more or less homogeneous, the highest concentrations being found in the middle of the lagoon. The phosphate was principally bound onto the sediment in the west zone. The observed distribution was independent of grain size, the distribution of which was rather homogeneous. In this lagoon water circulation is wind induced. Four different water flow structures were observed, as functions of the prevailing winds...
Tipo: Text
Palavras-chave: Sédiment; Lagune côtière; Hydrodynamique; Sels nutritifs; Carbone; Sediment; Coastal lagoon; Hydrodynamics; Nutrients; Carbon.
Ano: 1998
URL: http://archimer.ifremer.fr/doc/00325/43642/43247.pdf

Écologie de la reproduction de l’huître Crassostrea gigas en lagune méditerranéenne
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Lagarde, Franck.
The Mediterranean lagoons host many anthropogenic uses including shellfish aquaculture since the beginning of the 20th century. Imported in 1970, the cupped oyster, Crassostrea gigas, has adapted perfectly and has allowed an important development of oyster’s industry until 2008, the year of occurence of spat outbreak related to the emergence of an Ostreid Herpes-virus μvar. The scarcity of spat and the speculation on this product changed regionally cultural practices and the supply of juveniles, with in particular the wish of developing a local activity of spat collection. However the cycle of reproduction of the species and the recruitment of juveniles were poorly known in lagoon environments. In this context, the objective of this thesis is to...
Tipo: Text
Palavras-chave: Huître; Écologie larvaire; Ressource trophique; Connectivité; Recrutement; Lagune côtière; Oyster; Larval ecology; Trophic resource; Connectivity; Recruitment; Coastal lagoon.
Ano: 2018
URL: https://archimer.ifremer.fr/doc/00472/58347/60901.pdf