Consulta: subjectFacets:"Clam fisheries"
Registros recuperados: 9
Data/hora: 01/06/2024 02:49:19

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

Breve caracterización de la Caleta de los Loros y consideraciones sobre las actividades pesqueras
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Morsan, E.M.
La Caleta de los Loros es una llanura de marea que ha sido establecida como "Reserva de Usos Múltiples", con una zonación interior que determina los usos permitidos. En este informe se realiza una caracterización ambiental y se hacen consideraciones sobre la utilización de los recursos, con especial énfasis en el mejillón
Tipo: Report
Palavras-chave: Environmental conditions; Environmental surveys; Environmental protection; Coastal zone management; Clam fisheries; Multiple use of resources; Environmental conditions; Environmental protection; Http://aims.fao.org/aos/agrovoc/c_32980; Http://aims.fao.org/aos/agrovoc/c_15898.
Ano: 2005
URL: http://hdl.handle.net/1834/3714

Pesquerías de bivalvos: mejillón, vieiras (tehuelche y patagónica) y otras especies
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Ciocco, N.F.; Lasta, M.L.; Bremec, C.
Fisheries of the mussel Mytilus edulis platensis, the tehuelche scallop Aequipecten tehuelchus and Patagonian scallop Zygochlamys patagonica are described. Information about catches of purple clam Amiantis purpurata in San Matias Gulf, mussel Aulacomya ater ater and hard shell clam Ameghinomya antiqua in San José Gulf is also presented. Regarding mytilus fishery, it is observed that the main catches were situated in Faro Querandí and Quequén beds (Buenos Aires Province, Argentina), where high densities occured in an area between 35 and 60 m depths. Those beds were exploited until the production was no more commercially interesting. The tehuelche scallop is a very well known resource from the Argentine Sea and its fisheries from San Matías and San José...
Tipo: Book Section
Palavras-chave: Mussel fisheries; Scallop fisheries; Clam fisheries; Fishery surveys; Catch/effort; Fishing grounds; Fishing grounds; Http://aims.fao.org/aos/agrovoc/c_2947.
Ano: 1998
URL: http://hdl.handle.net/1834/2579

Situación de la pesquería del recurso almeja (Venus antiqua) en la X región. Investigación situación pesquerías bentónicas, 2006
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Barahona T., N.; González Y., J.
El objetivo de esta investigación es establecer el estado de la pesquería del recurso almeja en la X región, en función de la tendencia en los indicadores pesqueros relevantes, con el propósito de disponer de una visión diagnóstica para el manejo de la pesquería.
Tipo: Report
Palavras-chave: Benthic environment; Clam fisheries; Stock assessment; Stock assessment; Benthic environment; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_877.
Ano: 2007
URL: http://hdl.handle.net/1834/4109

Dinámica poblacional y explotación de la almeja púrpura, Amiantis purpurata L
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Morsan, E.
The purple clam, Amiantis purpurata, inhabits the warm-temperate waters of the southwestern Atlantic, from Espírito Santo (Brazil) to the San Matías Gulf (Argentina). There are no previous studies dealing with its biology and populations dynamics. Astock located in Playa Villarino (San Antonio Este, San Matías Gulf) supports the only artisanal fishery targeting this species. Some peculiar aspects of its dynamics revealed by this study have significant implications for management: 1. It constitutes the southernmost population of this species, and appears to be isolated from other populations located to the north 2. Individuals are slow-growing 3. It seems to be composed of just one or a few annual classes, which are older than 10 years . 4. The spatial...
Tipo: Theses and Dissertations
Palavras-chave: Population dynamics; Artisanal fishing; Fishery biology; Clam fisheries; Fishery resources; Resource exploitation.
Ano: 2000
URL: http://hdl.handle.net/1834/5034

Regulación denso-dependiente del crecimiento individual de la almeja púrpura (Amiantis purpurata, Lamarck 1818)
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Pappalardo, M.P.; Morsan, E.M.
In this study we analyze growth, mortality and estimated biomass trend of purple clam, Amiantis purpurata, population placed in Playa Villarino, (Northern San Matias gulf, Argentina) in the southern most boundary of its geographical distribution. Previously, the population structure was described composed by three consecutive cohorts settled among 1978-1980, and the individual growth rate showed high spatial variability. The hypothesis to test in this study is that growth rate is regulated by local biomass. We choice four sites with different densities, to assess growth rate, natural mortality and retrospective estimated biomass trend. During February 2003, densities and growth rate (using external growth bands measurements) were analyzed matching with a...
Tipo: Journal Contribution
Palavras-chave: Growth rate; Clam fisheries; Mortality; Growth curves; Density dependence; Biomass; Growth; Biomass.
Ano: 2005
URL: http://hdl.handle.net/1834/4385

Estado de situación de los recursos pesqueros del Golfo San Matías, sus pesquerías, especies asociadas y ambiente: informe ad hoc para la evaluación preliminar de las pesquerías marinas de Río Negro con vistas a la certificación de su sustentabilidad
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Coller, M.; Osovnikar, P.; Narvarte, M.; Perier, R.; González, R.A.; Di Giácomo, E.; Morsan, E.M.; Braicovich, P.; Curtolo, L.; Ocampo, M.
Se realiza una sinopsis del estado de situación de los recursos pesqueros del Golfo San Matías, de sus pesquerías y especies asociadas a las mismas y del ecosistema marino. El objetivo de este informe es presentar información histórica y actualizada sobre los recursos pesqueros y las pesquerías marinas de Río Negro, a los fines de su empleo como guía de análisis para la evaluación de las mismas con vistas a la potencial certificación de una gestión sustentable de las mismas a partir de los estándares del Marine Stewardship Council (MSC). Se presenta información sobre la organización y estructura del sector institucional y del marco legal en el que se desarrolla la actividad. Se desarrolla una caracterización de las pesquerías a partir de diferentes...
Tipo: Report
Palavras-chave: Fishery resources; Fishery management; Clam fisheries; Coastal fisheries; Biodiversity; Environments; Associated species; Yield; Potential yield; Fishery regulations; Certification; Standards; Sustainability; Fishing fleet; Fishery management; Certification; Fishery resources; Coastal fisheries; Biodiversity; Sustainability.
Ano: 2004
URL: http://hdl.handle.net/1834/3719

Descripción de las principales especies de invertebrados sujetas a explotación pesquera artesanal en el Golfo San Matías y caracterización sinóptica del sistema pesquero rionegrino relacionado con esas pesquerías
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Narvarte, M.; Morsan, E.M.
Se presenta una sinopsis sobre la situación d las pesquerias artesanales de invertebrados del Golfo San Matías, de los principales recursos (almeja púrpura, vieira tehuelche, mejillón y pulpito) y del ecosistema marino donde se desarrollan las mismas. Se brinda una guía de análisis para proceder a la evaluación de las mismas con vistas a la potencial certificación de una gestión sustentable. Además se incluye una memoria descriptiva del sector institucional y los organismos encargados de la administración, manejo, investigación y control de las pesquerías, como asi también del marco legal en la que se desarrolla la actividad
Tipo: Report
Palavras-chave: Artisanal fishing; Coastal fisheries; Fishery management; Clam fisheries; Stock assessment; Legislation; Fishery regulations; Certification; Fishery management; Stock assessment; Coastal fisheries; Legislation; Certification; Http://aims.fao.org/aos/agrovoc/c_24026; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_1696; Http://aims.fao.org/aos/agrovoc/c_4253; Http://aims.fao.org/aos/agrovoc/c_35702.
Ano: 2005
URL: http://hdl.handle.net/1834/3712