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	Provedor de dados ArchiMer (4) Autor Bergeron, Jean-pierre (4) Koueta, Noussithe (3) Delmas, Daniel (1) Masse, Jacques (1) Palavra-chave Aspartate transcarbamylase (4) Bay of Biscay (3) Mesozooplankton (3) Anchovy biomass (1) Breeding season (1) Chlorophyll a (1) Continental shelf break (1) English Channel (1) Manche (1) Metabolic descriptors (1) Pelagic ecosystem (1) Pelagic fisheries (1) Production (1) Pyruvate kinase (1) Satellite imagery (1) Trypsin (1) Zooplancton (1) Zooplankton (1) Écosystème pélagique (1) Mais... Tipo do documento Text (4) Ano 2013 (1) 2011 (1) 2009 (1) 1986 (1) País France (4) Idioma Inglês (3) Francês (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 4 Primeira ... 1 ... Última Determining how the pelagic ecosystem over the continental shelf of the Bay of Biscay (NE Atlantic) functions: An approach using mesozooplankton enzyme activities as descriptors ArchiMer Bergeron, Jean-pierre; Delmas, Daniel; Koueta, Noussithe. A fisheries research cruise conducted in 2000 offered a first opportunity to take simultaneous measurements of the activities of three enzymes in mesozooplankton samples collected at a regional scale over the continental shelf of the Bay of Biscay in the NE Atlantic, with the aim of characterizing main aspects of the functioning of the biotic environment of small pelagic fish populations. The activity of the digestive endopeptidase trypsin was selected to characterize the assimilation rate of proteins, whereas pyruvate kinase (PK) was chosen as an indicator of carbohydrate assimilation and aspartate transcarbamylase (ATC) provided an overall assessment of mesozooplankton productivity. The Bay of Biscay region is subject to various strong physical driving... Tipo: Text Palavras-chave: Trypsin; Pyruvate kinase; Metabolic descriptors; Mesozooplankton; Bay of Biscay; Aspartate transcarbamylase. Ano: 2009 URL: http://archimer.ifremer.fr/doc/2009/publication-6359.pdf Interannual fluctuations in spring pelagic ecosystem productivity in the Bay of Biscay (northeast Atlantic) measured by mesozooplankton aspartate transcarbamylase activity and relationships with anchovy population dynamics ArchiMer Bergeron, Jean-pierre; Koueta, Noussithe; Masse, Jacques. The French part of the continental shelf of the Bay of Biscay (northeast Atlantic) is the habitat of an anchovy (Engraulis encrasicolus L.) population of scientific interest because of its economic importance and the trend towards greater interannual fluctuations in its abundance, particularly as a consequence of variations in recruitment. Each year a 1-month survey of this population and its pelagic environment is undertaken. Among the descriptors of ecosystem function characterized, mesozooplankton aspartate transcarbamylase (ATC) activity is measured with the goal of defining overall productivity of the mesozooplankton communities. Diverse physical forcing factors are responsible for the enhancement of productivity in the Bay of Biscay, and their... Tipo: Text Palavras-chave: Aspartate transcarbamylase; Anchovy biomass; Breeding season; Mesozooplankton; Pelagic fisheries; Bay of Biscay. Ano: 2013 URL: http://archimer.ifremer.fr/doc/00128/23889/21849.pdf Approche systémique des potentialités de production secondaire pélagique: inférences de fluctuations interannuelles ArchiMer Bergeron, Jean-pierre. Une méthode d'estimation des potentialités de production secondaire pélagique est proposée, tirant profit de l'homologie interspécifique de certains processus métaboliques élémentaires. Elle consiste à mesurer l'activité de l'aspartate transcarbamylase (A TC), enzyme contribuant à la biosynthèse de composants de base des acides nucléiques, sur des échantillons du peuplement mésozooplanctonique total. L'exécution de onze campagnes au cours des périodes printanières de trois. années consécutives, de 1978 à 1980, a permis d'appliquer cette approche à un écosystème néritique de région tempérée, situé au large de la côte nord de la Bretagne (Manche occidentale). Les onze séries de données ainsi acquises prêtent à caractériser les traits essentiels de... Tipo: Text Palavras-chave: Aspartate transcarbamylase; Écosystème pélagique; Manche; Production; Zooplancton; Aspartate transcarbamylase; Pelagic ecosystem; English Channel; Production; Zooplankton. Ano: 1986 URL: https://archimer.ifremer.fr/doc/00072/18315/15884.pdf Biological productivity enhancement over a continental shelf break (Bay of Biscay, NE Atlantic) evidenced by mesozooplankton aspartate transcarbamylase activity ArchiMer Bergeron, Jean-pierre; Koueta, Noussithe. During spring of 2005, satellite imagery revealed high sea surface chlorophyll a concentrations over the edge of a wide continental shelf in the Bay of Biscay (NE Atlantic). As a descriptor of biological productivity, mesozooplankton aspartate transcarbamylase specific activity was measured in situ during the bloom. Notably high values were detected in the bloom area relative to other parts of the study area. Tipo: Text Palavras-chave: Aspartate transcarbamylase; Chlorophyll a; Mesozooplankton; Satellite imagery; Continental shelf break; Bay of Biscay. Ano: 2011 URL: http://archimer.ifremer.fr/doc/00033/14474/11772.pdf Registros recuperados: 4 Primeira ... 1 ... Última

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