Sabiia Seb
PortuguêsEspañolEnglish
Embrapa
        Busca avançada

Botão Atualizar


Botão Atualizar

Ordenar por: RelevânciaAutorTítuloAnoImprime registros no formato resumido
Registros recuperados: 8
Primeira ... 1 ... Última
Imagem não selecionada

Imprime registro no formato completo
Diagnostic étendu de l'eutrophisation (DIETE). Rôle des sédiments dans le cycle des nutriments et impacts sur l'eutrophisation de la baie de Vilaine (2014-2017) ArchiMer
Souchu, Philippe; Cochennec-laureau, Nathalie; Ratmaya, Widya; Retho, Michael; Andrieux, Francoise; Le Merrer, Yoann; Barille, Laurent; Barille, Anne-laure; Goubert, Evelyne; Plus, Martin; Laverman, Anniet.
Le projet DIETE a exploré les données hydrobiologiques (paramètres physico-chimiques, nutriments, phytoplancton) acquises depuis les années 80 dans les eaux côtières au large de la Loire et de la Vilaine, parallèlement à celles des deux fleuves. L’augmentation des concentrations de nitrates dans les eaux de la Loire, appuyée par les réserves sédimentaires de phosphates et de silicate ont entraîné de profonds bouleversements dans la dynamique du phytoplancton de la baie de Vilaine ces deux dernières décennies avec 1) une augmentation substantielle de la biomasse, 2) une modification importante de l’évolution saisonnière, 3) un changement dans les proportions entre diatomées et dinoflagellés au profit des diatomées. Ces résultats ouvrent tout un champ...
Tipo: Text Palavras-chave: Eutophisation; Azote; Phosphore; Silicium; Sédiments; Modélisation.
Ano: 2018 URL: http://archimer.ifremer.fr/doc/00425/53695/54593.pdf
Imagem não selecionada

Imprime registro no formato completo
Evolution annuelle du phytoplancton dans le Pertuis Breton - Charente-Maritime ArchiMer
Barille, Anne-laure.
Afin d'améliorer les gestion des bassins conchylicoles, de nombreux auteurs ont élaboré des modèles mathématiques simulant les activités physiques et biologiques des bassins étudiés (Bacher et al.. 1990, bassin de Marennes-Oléron ; Bioteau, 1993, étang de Thau ; Chapelle, 1993, Baie de la Vilaine ; Radford. 1993, mer du Nord ; Smaal et Scholten, 1989, bassins mytilicoles hollandais; Santhanam et al., 1990, sud-est de l'Inde ; Keizer et al., 1987, bassin de Cumberland). Un des problèmes majeurs qui se pose au modélisateur est l'estimation de la capacité trophique d'un bassin. Quel facteur est le plus représentatif de la nourriture disponible pour les mollusques filtreurs ? Widdows et al. (1979) caractérisent le potentiel nutritif disponible pour les...
Tipo: Text Palavras-chave: Phytoplancton; Variations annuelles; Facteurs climatiques; Répartition; Marennes Oléron; Pertuis Breton.
Ano: 1994 URL: http://archimer.ifremer.fr/doc/00078/18905/16491.pdf
Imagem não selecionada

Imprime registro no formato completo
Growth of the Pacific oyster (Crassostrea gigas) in a high-turbidity environment: Comparison of model simulations based on scope for growth and dynamic energy budgets ArchiMer
Barille, Laurent; Lerouxel, Astrid; Dutertre, Mickael; Haure, Joel; Barille, Anne-laure; Pouvreau, Stephane; Alunno-bruscia, Marianne.
We compared growth simulations by dynamic energy budget (DEB) and scope for growth (SFG) models of the Pacific oyster Crassostrea gigas, cultivated in Bourgneuf Bay on the French Atlantic coast. This bay is located at a latitude in the middle of the European range of the species, and is characterized by high concentrations of suspended particulate matter (SPM) and a marked gradient between high-turbidity sites in the north (daily SPM > 500 mg L-1) and intermediate-turbidity sites in the south. The models use two forcing variables: seawater temperature and food density. We tested two indices of food availability: chlorophyll a and microalgal concentrations. In the SFG model, food intake is simulated by a type-II Holling functional response, as in the DEB...
Tipo: Text Palavras-chave: Oyster; Dynamic Energy Budget model; Scope for growth model; Turbidity.
Ano: 2011 URL: http://archimer.ifremer.fr/doc/00043/15433/12783.pdf
Imagem não selecionada

Imprime registro no formato completo
Hydrobiologie d'un écosystème conchylicole : le Pertuis Breton (17) ArchiMer
Barille, Anne-laure.
La Baie de l'Aiguillon fut le berceau de la conchyliculture: les premiers parcs à moules furent établis au XIII""'· siècle par un irlandais P. Walton, naufragé en 1235 prés du port d'Esnande. C'est à lui que l'on attribut l'invention des bouchots. L'élevage traditionnel sur bouchot, initialement implanté à l'intérieur de la Baie de l'Aiguillon, a entraîné un tel envasement, que la culture des moules y est devenue impraticable. Les mytiliculteurs ont du installer leur bouchot à la sortie de la baie. Cette culture représente 20 000 tonnes; ce qui fait . du Pertuis Breton le plus important secteur de production mytilicole de la façade Atlantique. Cet élevage traditionnel occupe actuellement tous les sites exploitables, il faut donc conquérir de nouveaux...
Tipo: Text Palavras-chave: Hydrobiologie; Capacité trophique; Estimation biomasse; Mytiliculture; Mytilus edulis; Pertuis Breton.
Ano: 1993 URL: http://archimer.ifremer.fr/doc/00165/27639/25787.pdf
Imagem não selecionada

Imprime registro no formato completo
Implementation of a new index to assess intertidal seaweed communities as bioindicators for the European Water Framework Directory ArchiMer
Ar Gall, E; Le Duff, M.; Sauriau, P. -g.; De Casamajor, Marie-noelle; Gevaert, F.; Poisson, E.; Hacquebart, P.; Joncourt, Y.; Barille, Anne-laure; Buchet, Remi; Breret, M.; Miossec, Laurence.
An index CCO (cover, characteristic species, opportunistic species) has been developed for the implementation of the European Water Framework Directory (WFD) in coastal waters, using intertidal macroalgal communities as bio-indicator (Biological Quality Element). CCO is based on the calculation of three metrics corresponding to the global cover of macroalgal communities (metric 1), the number of characteristic species per topographic level/seaweed community (metric 2) and the cover of opportunistic species (metric 3). The final rating is obtained by pooling the scores of the three metrics. Results are given for 32 sites in 29 water bodies, grouped into four biogeographic regions along the Channel–Atlantic coasts of France. Over the six-year study, most of...
Tipo: Text Palavras-chave: Water Framework Directory; Macroalgal communities; Intertidal seaweeds; Quality index; Coastal water bodies.
Ano: 2016 URL: https://archimer.ifremer.fr/doc/00273/38445/37198.pdf
Imagem não selecionada

Imprime registro no formato completo
Mise en place de la DCE dans les masses d'eau côtières des Pays de la Loire - Prospection de la flore et de la faune benthiques et proposition d'un réseau de surveillance ArchiMer
Barille, Anne-laure; Harin, Nicolas; Sauriau, Pierre-guy; Truhaud, Nicolas; Oger-jeanneret, Helene.
The Water Framework Directive (WFD) sets an objective of "good condition" for aquatic environments by 2015. Its implementation along the shoreline is the object of a well-established collaboration between the Ministry of Ecology and Sustainable Development (which became the Ministry of Sustainable Ecology, Development and Urban Planning), the Water Agencies and IFREMER. While the MEDD/IFREMER national agreement brings elements of methodology and general knowledge for managing French shoreline policy, it covers only very partially the needs of shoreline politics in Brittany and the Pays de la Loire region, and requires supplementary items linked to the specifics of the Loire-Brittany shoreline: very widespread and numerous water masses due to the presence...
Tipo: Text
Ano: 2007 URL: http://archimer.ifremer.fr/doc/2007/rapport-2591.pdf
Imagem não selecionada

Imprime registro no formato completo
Multiscale patterns in the diversity and organization of benthic intertidal fauna among French Atlantic estuaries ArchiMer
Blanchet, Hugues; Gouillieux, Benoit; Alizier, Sandrine; Amouroux, Jean-michel; Bachelet, Guy; Barille, Anne-laure; Dauvin, Jean-claude; De Montaudouin, Xavier; Derolez, Valerie; Desroy, Nicolas; Grall, Jacques; Gremare, Antoine; Hacquebart, Pascal; Jourde, Jerome; Labrune, Celine; Lavesque, Nicolas; Meirland, Alain; Nebout, Thiebaut; Olivier, Frederic; Pelaprat, Corine; Ruellet, Thierry; Sauriau, Pierre-guy; Thorin, Sebastien.
Based on a parallel sampling conducted during autumn 2008, a comparative study of the intertidal benthic macrofauna among 10 estuarine systems located along the Channel and Atlantic coasts of France was performed in order to assess the level of fauna similarity among these sites and to identify possible environmental factors involved in the observed pattern at both large (among sites) and smaller (benthic assemblages) scales. More precisely this study focused on unraveling the observed pattern of intertidal benthic fauna composition and diversity observed at among-sites scale by exploring both biotic and abiotic factors acting at the among- and within-site scales. Results showed limited level of similarity at the among-site level in terms of intertidal...
Tipo: Text Palavras-chave: Estuaries; Macrozoobenthos; Diversity; Structuring Factors; WFD.
Ano: 2014 URL: http://archimer.ifremer.fr/doc/00179/29016/27444.pdf
Imagem não selecionada

Imprime registro no formato completo
Temperature and seston quantity and quality effects on field reproduction of farmed oysters, Crassostrea gigas, in Bourgneuf Bay, France ArchiMer
Dutertre, Mickael; Beninger, Peter G.; Barille, Laurent; Papin, Mathias; Rosa, Philippe; Barille, Anne-laure; Haure, Joel.
The proliferation of the voluntarily-introduced cupped oyster, Crassostrea gigas, has attained the proportions of species invasion in many intertidal habitats in Europe, presumably resulting from successful reproduction of farmed individuals. It is thus imperative to better understand the reproductive characteristics of farmed oysters, since they are directly under human control. We quantified the dry tissue mass (DTM), gametosomatic index (GSI), and reproductive cycle of farmed oysters at two sites in Bourgneuf Bay, France, in relation to environmental parameters using continuously-recording probes in 2005 and 2006. The GSI was developed for this study, based on the actual area occupied by gametes, rather than the area of the gonad previously used for...
Tipo: Text Palavras-chave: Atlantic Ocean; Crassostrea gigas; Oyster farming; Bivalve; Gametosomatic index; Biological invasion; Atresia; Oocytes; Turbidity; Temperature; Reproduction.
Ano: 2009 URL: http://archimer.ifremer.fr/doc/2009/publication-6871.pdf
Registros recuperados: 8
Primeira ... 1 ... Última
 

Empresa Brasileira de Pesquisa Agropecuária - Embrapa
Todos os direitos reservados, conforme Lei n° 9.610
Política de Privacidade
Área restrita

Embrapa
Parque Estação Biológica - PqEB s/n°
Brasília, DF - Brasil - CEP 70770-901
Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco

Valid HTML 4.01 Transitional