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Hydrologie : des mesures sur l'eau ArchiMer
Guesdon, Stephane; Soletchnik, Patrick.
Ce poster présente les stratégies spatio temporelles de mesures hydrologiques dans les pertuis charentais; (1) la "basse fréquence", par prélèvements d'échantillons d'eau de mer et (2) la "haute fréquence", par mesure in situ à partir de sonde multi paramètres immergées. Les objectifs de ces réseaux sont la surveillance et la recherche. Un exemple de déssalure "furtive" est présenté en rivière Seudre
Tipo: Text Palavras-chave: Marennes Oléron Bassin; Nutriment; Oxygène dissous; Chlorophylle; Matières en suspension; Turbidité; Salinité; Température; Hydrologie.
Ano: 2008 URL: http://archimer.ifremer.fr/doc/2008/acte-4039.pdf
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Reproduction de l'huître creuse (Crassostra gigas) dans le Bassin de Marennes Oléron. La pêche expérimentale de larves d'huîtres, indicateurs de ponte et de recrutuement. Analyse spatio-temporelle et relation avec l'environnement ArchiMer
Soletchnik, Patrick.
This study is based on catched larvae data base produced since C. gigas was first imported into the Charentais Sounds (late 1960s, early 1970s). The method for catching larvae using a towed net remained unchanged between 1950 and 1998. Four sites have been sampled in the Bay since 1970, two situated in the Seudre estuary and two in the middle of the Bay. Two other sites from near the mouth of the Charente River have been sampled since 1982. For each sample, oyster larvae were counted in four size classes, from the young larva (1-4 days) to near metamorphosis (16-20 days). Each year, 100 to 150 captures were carried out at all sample sites between June and September. Captures from July and August represent 99% of the total. The main variables were: capture...
Tipo: Text Palavras-chave: Crassostrea gigas; Marennes Oléron Bassin; Pertuis Charentais; Analyse spatio temporelle; Recrutement; Saison; Larve; Ponte; Huîtrs; Reproduction.
Ano: 2000 URL: http://archimer.ifremer.fr/doc/2008/rapport-4125.pdf
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