Consulta: creatorFacets:"Desprez, M"
Registros recuperados: 3
Data/hora: 01/06/2024 04:51:04

Impact biosedimentologique d'amenagements portuaires en estuaire de Seine
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Desprez, M; Dupont, J.
Many harbour installations have reduced the intertidal zone and involved estuary choking by marine sediments. In 1980, weirs were built in dikes of navigation channels. This study strikes the balance of their impact on estuarine biofacies and points out indicator species for the study of biological impact of environmental design.
Tipo: Text
Palavras-chave: Indicator species; Biofacies; Estuarine sedimentation; Benthos; Port installations; Environmental impact; Coastal zone management.
Ano: 1985
URL: http://archimer.ifremer.fr/doc/1985/acte-1314.pdf

Crise de la production des coques (Cerastoderma edule ) en baie de Somme. 2. Impact de la dynamique biosedimentaire.
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Ducrotoy, J; Desprez, M; Elkaim, B.
The recent collapse in the landings of cockles (Cerastoderma edule) from the Bay of Somme (France) required to investigate if a change in the environmental factors was liable for the drop of the bivalve populations. This project has led to a preliminary assessment of the situation and has been drawn up from the data collected by the Groupe d'Etude des Milieux Estuariens et Littoraux since 1978. It relies on the survey of the spatio-temporal changes of bio-facies. it is suggested that the impact of changes in sediment characteristics is important as well as competition with species as Pygospio elegans (Polychaeta). The above parameters are assessed as essential in the fluctuations of the cockle numbers but they do not explain entirely the collapse in the...
Tipo: Text
Palavras-chave: Landing statistics; Clam fisheries; Stock assessment; Population dynamics; Marine mollusks.
Ano: 1985
URL: http://archimer.ifremer.fr/doc/1985/publication-1784.pdf

Crise de la production des coques (Cerastoderma edule ) en baie de Somme. 1. Synthese des connaissances biologiques.
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Desprez, M; Ducrotoy, J; Elkaim, B.
In this paper, the results collected since 1978 on the cockle (Cerastoderma edule) in the Bay of Somme have been recapitulated. A synthesis is brought up about causes of the bivalve population collapse which was portended as early as 1982 from the animal cinetics study. In order to back up the discussion, the main results dealing with the biology and ecology of the species are recalled in illustrated form. A review of the international literature leads to a comment upon the diagrams. A comparison with data from European estuaries tends to take climatic and oceanic disturbances into account as well as local pollution such as eutrophication which is probable on the littoral of Picardy.
Tipo: Text
Palavras-chave: Clam fisheries; Stock assessment; Recruitment; Population dynamics; Marine mollusks.
Ano: 1985
URL: http://archimer.ifremer.fr/doc/1985/publication-1783.pdf