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Evolution du phytoplancton dans des bassins de culture ArchiMer
Nival, Paul; Malara, G.; Lelong, P.; Cellario, C.; Charra, R.; Riva, A..
The concentration of chlorophyll a in large out-door continuous cul­ture was analysed in spring 1977 and 1978, and autumn - winter 1977-1978. The growth of marine phytoplankton in springsl977 is analysed with more details and shows three phases : - first, the diatoms (especially Skeletonema costatum) grow rapidely (27/4 to 3/5). The growth rate estimated by the chlorophyll measurements is 1.36 day“1. - then (3/5 to.13/5) the concentration of chlorophyll remains more or less constant (23.611.2 mg/m3) as well as the concentration of particulate organic matter. - at the end of the experiment (13/5 to 20/5) the concentration of chlo­rophyll falls as soon as Skeletonema costatum decrease in number.The declin of the phytoplankton biomass is followed by an...
Tipo: Text Palavras-chave: Phytoplancton; Culture; Croissance; Composition chimique; Espèces; Phytoplankton; Culture; Growth; Chemical composition; Species.
Ano: 1979 URL: http://archimer.ifremer.fr/doc/00305/41668/40877.pdf
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Synthèse des pêcheries 2000 - Flotte Mer du Nord, Manche, Atlantique ArchiMer
Berthou, Patrick; Daures, Fabienne; Guyader, Olivier; Merrien, Claude; Jezequel, Michele.
This summary of the French fisheries of the North Sea/English Channel/Atlantic for the year 2000 is done in the context of the programme "Halieutic Information Systems" that has as its goal the creation of a permanent and operational observatory of fishing. It brings together several types of data: statistical data of administrative origin, data from the IFREMER pollsters network, economic data and data acquired during sea campaigns. This first annual summary of French fisheries, meant for all actors in the fishing industry (from research to professionals and managers) and the general public, is limited to the Atlantic coast. The first part of this document contains an overall description of the English Channel Atlantic fleet, that is, all trades included....
Tipo: Text Palavras-chave: Fishing gear; French fisheries; Fishing fleet; Species; Metier; Atlantic Ocean; Channel; North Sea; Pêcheries françaises; Flottille de pêche; Engins de pêche; Espèces; Métier; Atlantique; Manche; Mer du Nord.
Ano: 2002 URL: http://archimer.ifremer.fr/doc/2002/rapport-2629.pdf
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