Consulta: subjectFacets:"Demersal fisheries"
Registros recuperados: 50
Data/hora: 05/06/2024 04:28:37

How do demersal fishing fleets interact with aggregate extraction in a congested sea?
Provedor de dados: 5
Autores: Marchal, Paul; Desprez, Michel; Vermard, Youen; Tidd, Alex.
The effects of the aggregate extraction intensity and the distance to extraction sites on the distribution of fishing effort were investigated for a broad selection of French and English demersal fleets operating in the Eastern English Channel. The most prominent result was that most fleets fishing near to aggregate extraction sites were not deterred by extraction activities. The fishing effort of dredgers and potters could be greater adjacent to marine aggregates sites than elsewhere, and also positively correlated to extraction intensity with a lag of 0–9 months. The distribution of fishing effort of French netters remained consistent over the study period. However, it is of note that the fishing effort of netters has increased substantially in the...
Tipo: Text
Palavras-chave: Spatial management; Spatial planning; Demersal fisheries; Aggregate extraction; Eastern English Channel.
Ano: 2014
URL: http://archimer.ifremer.fr/doc/00206/31763/30651.pdf

Area-based management and fishing efficiency
Provedor de dados: 5
Autores: Marchal, Paul; Ulrich, Clara; Pastoors, M.
The scope of this study is to investigate the extent to which area-based management may have influenced the fishing efficiency of the Danish and Dutch demersal fleets harvesting cod, plaice and sole in the North Sea. Special consideration is given to the 'plaice box', a restricted area where fishing is prohibited to towed-gear fleets of horsepower exceeding 300 hp. An index of fishing power is calculated as the log-ratio between the catch per unit effort (CPUE) of any vessel and some survey abundance index. Annual trends in fishing are calculated as the year-effect derived from a general linear model (GLM) analysis of the index of fishing power. The fishing efficiency of Danish gill-netters and, to some extent, Danish seiners, has overall increased inside...
Tipo: Text
Palavras-chave: Fishing efficiency; Plaice box; Fisheries management; North Sea; Demersal fisheries.
Ano: 2002
URL: https://archimer.ifremer.fr/doc/00589/70118/68112.pdf

Distribución y abundancia de los recursos demersales en la plataforma continental del Ecuador durante octubre de 1995
Provedor de dados: 20
Autores: Revelo, W.
The demersal phase (from 18th to November 01th, 1995) of cruise T95/10/04 DO, covered an area of 15632,6 km2 between 00º36'0”N-80º34'3”O and 03º22'8”S-80º49'5”O, of the Ecuadorian Continental Plataform, the depth range from 14 to 115 meters. 120 species were recorded, divided into 85 osseous fish species, three sharks, 11 ray, 18 crustaceans, two molluscan and one holothurid (sea cucumber). Total biomass was estimated as 95297,5 t; with 97,3% of this biomass distributed between 01º00'0”S and 03º23'S. The most abundant species were: barriga juma (Larimus spp) (11153 t), corvina (Cynoscion spp) (4523 t), gallineta (Prionotus spp) (55651 t), perela (Palabrax callaensis) (3774 t) and ravi junco (Centrithmus signifer) (2407 t).
Tipo: Journal Contribution
Palavras-chave: Fishery resources; Demersal fisheries; Continental shelves; Abundance; Geographical distribution; Demersal fisheries; Geographical distribution; Fishery resources; Continental shelves; Http://aims.fao.org/aos/agrovoc/c_2173; Http://aims.fao.org/aos/agrovoc/c_5083; Http://aims.fao.org/aos/agrovoc/c_2942; Http://aims.fao.org/aos/agrovoc/c_32413.
Ano: 1996
URL: http://hdl.handle.net/1834/2970

Evaluation des stocks et aménagement des pêcheries de la ZEE mauritanienne
Provedor de dados: 20
Autores: Diop, M.; Inejih, C.A.O.; Tous, P.; Failler, P.; Dia, M.A.
Le cinquième groupe de travail destiné à l’évaluation des stocks et l’aménagement des pêcheries de la zone économique exclusive mauritanienne s’est réuni à l’Institut Mauritanien de Recherches Océanographiques et des Pêches (IMROP) du 9 au 17 décembre 2002. Les objectifs de ce groupe de travail étaient d’actualiser les résultats des groupes de travail précédents, en utilisant les nouvelles informations disponibles ; d’établir un diagnostic des différents stocks et pêcheries afin de définir les potentiels de capture ainsi que les caractéristiques de l’effort permissible et d’évaluer l’impact des mesures d’aménagement actuellement en vigueur et identifier les perspectives à venir. Les résultats obtenus ont contribué à la formulation de recommandations...
Tipo: Journal Contribution
Palavras-chave: Artisanal fishing; Catch composition; Catch statistics; Catch/effort; Cephalopod fisheries; Coastal fisheries; Demersal fisheries; Economic analysis; Environmental conditions; Fishery economics; Fishery management; Fishing effort; Fishing fleet; Landing statistics; Marine environment; Overfishing; Pelagic fisheries; Population dynamics; Prices; Quality assurance; Quality control; Research institutions; Research vessels; Seasonal distribution; Seasonal variations; Shrimp fisheries; Socioeconomic aspects; Upwelling; Demersal fisheries; Economic analysis; Fishery management; Marine environment; Prices; Research vessels; Catch composition; Coastal fisheries; Environmental conditions; Fishing effort; Overfishing; Pelagic fisheries; Population dynamics; Quality assurance; Research institutions; Http://aims.fao.org/aos/agrovoc/c_2173; Http://aims.fao.org/aos/agrovoc/c_2469; Http://aims.fao.org/aos/agrovoc/c_24026; Http://aims.fao.org/aos/agrovoc/c_4610; Http://aims.fao.org/aos/agrovoc/c_6178; Http://aims.fao.org/aos/agrovoc/c_6516; Http://aims.fao.org/aos/agrovoc/c_1384; Http://aims.fao.org/aos/agrovoc/c_1696; Http://aims.fao.org/aos/agrovoc/c_32980; Http://aims.fao.org/aos/agrovoc/c_24027; Http://aims.fao.org/aos/agrovoc/c_34068; Http://aims.fao.org/aos/agrovoc/c_5659; Http://aims.fao.org/aos/agrovoc/c_6111; Http://aims.fao.org/aos/agrovoc/c_35287; Http://aims.fao.org/aos/agrovoc/c_6514.
Ano: 2005
URL: http://hdl.handle.net/1834/1322

Pêcherie démersale côtière au Sénégal. Essai de modélisation de la dynamique de l'exploitation des stocks
Provedor de dados: 20
Autores: Institut de Recherche pour le Développement, Paris (France); Fall, Massal.
Français - Les traits essentiels de la côte sénégalaise, repères historiques de la pêche, communautés de pêcheurs, caractéristiques des flottes et modes d’accès à la ressource et d’interaction sont analysés. Les caractéristiques, tendances décroissantes de l’abondance,niveaux d’exploitation, mesures d’aménagement, relations interspécifiques, changements potentiels et sources de variation des stocks démersaux côtiers sont précisés. Les notions de tactiques et stratégies de pêche sont passées en revue, conceptualisées puis étudiées.Le modèle «Dynamique Conjointe Exploitation Ressource» utilisé repose sur la définition de 4 typologies. L’utilisation de méthodes de classification et de connaissances d’experts conduit à considérer 32 stocks, 31 strates, 82...
Tipo: Theses and Dissertations
Palavras-chave: Fisheries; Demersal fisheries; Modelling; Stocks; Ecosystems; Community fishing; Inland waters; Marine water; Hydrologic cycle; Fishermen; Fishing fleet; Shrimp fisheries; Capture fisheries; Fisheries management; Trawling; Artisanal fishing; Fishing licenses.
Ano: 2009
URL: http://hdl.handle.net/1834/5004

Estimación preliminar de la mortalidad natural de la merluza de cola (Macruronus magellanicus) en la plataforma sur-patagónica (Argentina)
Provedor de dados: 20
Autores: Ehrhardt, N.M.; Prenski, L.B.
Long-tail hake, Macruronus magellanicus, is an important species in the Argentinean southern demersal species complex. Significant development of these fisheries since 1987 is indicative of the need to assess the hoki resource and for this purpose knowledge about some of the fundamental population parameters, such as natural mortality rate, is required. Knowledge on the natural mortality rate is an important element for the quantification of the resilience of the stock to fishery exploitatuib. In this study an algorithm for estimating natural mortality of hoki is developed which is based on information on abundance at age obtained from area swept methods and from age composition in the landings. As a result, natural mortality rates for ages 5 to 9 ranged...
Tipo: Journal Contribution
Palavras-chave: Demersal fisheries; Mortality; Abundance; Demersal fisheries; Mortality; Http://aims.fao.org/aos/agrovoc/c_2173; Http://aims.fao.org/aos/agrovoc/c_4945.
Ano: 1996
URL: http://hdl.handle.net/1834/1962

Etat des stocks de poissons demersaux dans la zone économique mauritanienne
Provedor de dados: 20
Autores: Overko, S.; Boukatine, P.; Ly, B.; Tchernichkov, P. P.
Tipo: Journal Contribution
Palavras-chave: Fish stocksocks; Demersal fish; Hydrology; Ichthyology; Species; Demersal fisheries.
Ano: 1985
URL: http://hdl.handle.net/1834/4680

Evaluación de la polaca (Micromesistius australis) del Atlántico sudoccidental, período 1987-1999.
Provedor de dados: 20
Autores: Wöhler, O.C.; Cordo, H.D.; Cassia, M.C.; Hansen, J.E.
Taking into account the commercial catches by the Argentine fleet and other fleets that operated around Malvinas Islands (SW Atlantic) in the 1987-1999 period, the current state of southern blue whiting (Micromesistius australis) is assessed. A sequential analysis (Cohort Analysis) tuned, in an ADAPT conceptual framework with six independent indices of abundance, was performed for the southern blue whiting stock of the SW Atlantic. Commercial catch data of the Argentinian fleet and other fleets that operate around Malvinas Islands were used.The indices included catch per unit of effort of different fleets and data from Argentine-British research surveys. The analysis showed that the decreasing trend in biomass observed in previous studies went on during...
Tipo: Journal Contribution
Palavras-chave: Stock assessment; Fishing mortality; Biomass; Demersal fisheries; Statistical analysis; Gadoid fisheries; Stock assessment; Biomass; Demersal fisheries; Statistical analysis; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_926; Http://aims.fao.org/aos/agrovoc/c_2173; Http://aims.fao.org/aos/agrovoc/c_7378.
Ano: 2002
URL: http://hdl.handle.net/1834/2546

Evaluación pesquera del bacalao austral (Salilota australis) del Atlántico Sudoccidental
Provedor de dados: 20
Autores: Wöhler, O.C.; Cassia, M.C.; Hansen, J.E.
Information about the austral cod Salilota australis caught in the Patagonian shelf including the area around Malvinas Islands (SW Atlantic)as well as some data from annual research surveys carried out as of 1992 to 1998 were analyzed. On this basis, the fishery was studied and the abundance of the stock inhabiting the area under Argentine control was estimated. To calculate the optimum yield as a function of both age-at-first catch and fishing mortality, the Yield-per-Recruit model was used. Some biological reference points were also identified and an exploitation strategy based on low risk of collapse recommended. Austral cod landings, although small, showed an increasing trend as of 1990 that reached a maximum of 14,900 tons in 1998. Most of the catches...
Tipo: Journal Contribution
Palavras-chave: Stock assessment; Landing statistics; Fishing mortality; Fishing grounds; Risks; Demersal fisheries; Biomass; Stock assessment; Demersal fisheries; Biomass; Fishing grounds; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_2173; Http://aims.fao.org/aos/agrovoc/c_926; Http://aims.fao.org/aos/agrovoc/c_2947.
Ano: 2001
URL: http://hdl.handle.net/1834/1866

Los peces demersales del Banco Burdwood: distribución, abundancia de las especies y frecuencia de tallas (según datos de los B/I Walter Herwig y Shinkai Maru, campañas 1978-1979).
Provedor de dados: 20
Autores: Zunino, G.; Ichazo, M.M.
Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales.
Tipo: Theses and Dissertations
Palavras-chave: Demersal fisheries; Abundance; Environmental conditions; Demersal fisheries; Environmental conditions; Http://aims.fao.org/aos/agrovoc/c_2173; Http://aims.fao.org/aos/agrovoc/c_32980.
Ano: 1979
URL: http://hdl.handle.net/1834/3126

Seiches en Mauritanie. Biométrie de Sepia officinalis et S. bertheloti. Reproduction et distribution de Sepia officinalis
Provedor de dados: 20
Autores: Inejih, C.A.O.
Résumé : Une analyse globale des données biologiques collectées au cours des campagnes d’évaluation des stocks du plateau continental mauritanien effectuées par des navires de recherches (septembre 1987 à septembre 1988) a été réalisée pour les seiches. Les espèces de seiches les plus dominantes étaient Sepia officinalis et Sepia bertheloti. Pour ces deux espèces des relations biométriques ont été définies. Les données disponibles ont permis l’étude de la reproduction et de la distribution spatio-temporelle de Sepia officinalis. Les résultats obtenus dans cet article méritent une confirmation par une étude basée sur des données plus fines et plus complètes. #
Tipo: Journal Contribution
Palavras-chave: Cuttlefish fisheries; Fishery surveys; Demersal fisheries; Biometry; Http://aims.fao.org/aos/agrovoc/c_927.
Ano: 1990
URL: http://hdl.handle.net/1834/811

Evaluación del estado de explotación de la merluza de cola Macruronus magellanicus en la plataforma sur-argentina.
Provedor de dados: 20
Autores: Prenski, L.B.; Ehrhardt, N.M.; Legault, C.
Hoki, Macruronus magellanicus, is an important resource in the Argentinean multispecific southern demersal fishery. The species is distributed South of 46°S between the 50 and 200 meter isobaths. Thesouthern demersal fishery was almost nil prior to 1987, becoming more relevant toward the end of the 1980's. International fleets operating through several fishery agreement were those of the ex-Soviet Union,Bulgaria and Japan. Research on the abundance of hoki resources were initiated in the early 1970's; however, fishery research have been noticeably enhanced since 1992. In this study existing information on the Argentinean hoki fishery is integrated and an assessment of the status of exploitation of the species is carried out.As a result of the analyses, a...
Tipo: Journal Contribution
Palavras-chave: Fishery management; Mortality; Abundance; Stock assessment; Gadoid fisheries; Demersal fisheries; Adaptations; Fishery management; Stock assessment; Demersal fisheries; Mortality; Http://aims.fao.org/aos/agrovoc/c_24026; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_2173; Http://aims.fao.org/aos/agrovoc/c_4945.
Ano: 1997
URL: http://hdl.handle.net/1834/1924

State of the stocks and change in the abundance of demersal fisheries resources in the member countries of the CSRP
Provedor de dados: 20
Autores: Gasceul, D.; Laurans, M.; Sidibe, A.; Barry, M.D.
This communication presents a synthesis of the work undertaken within the framework of the FIAS project, by the “Single-species Analysis” module. This work focuses on statistical analyses of commercial fishing and the data from scientific trawling surveys, in order to deduce the current state of exploited stocks and to better understand the ecosystems of the sub-region. This relates to the analyses of about 20 stocks, distributed in the waters of the various countries and covering a broad range of ecological characteristics. Three approaches were used: (1) analyses of a time series of estimates of abundance indices obtained from GLM-type methods applied to survey or commercial data; analysis of a time series of catches and catches per unit of effort used...
Tipo: Conference Material
Palavras-chave: Demersal fisheries; Stock assessment.
Ano: 2002
URL: http://hdl.handle.net/1834/689

Mise en oeuvre de mesures de conservation et gestion durables des ressources halieutiques : le cas du Sénégal
Provedor de dados: 20
La pêche occupe une place importante dans l’économie et la société sénégalaises. En effet, elle est une activité multifonctionnelle qui contribue à la fois à l’équilibre de la balance des paiements du Sénégal, à la résorption du chômage et à la satisfaction des besoins alimentaires de la population sénégalaise. Malgré son importance, le secteur de la pêche est confronté à de graves déséquilibres socio-économiques et environnementaux qui résultent de la surexploitation des ressources halieutiques et de l’utilisation de certains modes d’exploitation néfastes. Il en découle des difficultés d’approvisionnement des marchés locaux et une diminution de l’apport en protéine des populations tributaires de la pêche. En outre, la forte propension à l’exportation de...
Tipo: Book
Palavras-chave: Fish consumption; Commercial fishing; Demersal fisheries; Artisanal fishing; Fishermen; Fishery industry; Fishery management; Fishery regulations; Fishery resources; Demersal fisheries; Fishermen; Fishery management; Fishery resources; Http://aims.fao.org/aos/agrovoc/c_2173; Http://aims.fao.org/aos/agrovoc/c_2936; Http://aims.fao.org/aos/agrovoc/c_24026; Http://aims.fao.org/aos/agrovoc/c_2942.
Ano: 2004
URL: http://hdl.handle.net/1834/2885

Análisis de la estratificación empleada en campañas de evaluación de recursos demersales costeros en la Zona Común de Pesca Argentino-Uruguaya y en El Rincón, 1994
Provedor de dados: 20
Autores: Perrotta, R.G.; Lasta, C.A.; Aubone, A.
The data belong to the demersal fishery research cruise H-13/94. Stratification used for research surveys from the catches values was tested, both for the northern area, Argentine-Uruguayan Common Fishing Zone (AUCFZ) located between 34° and 39°S, and the southern area situated between 38°30' and 41°30'S (El Rincón, Buenos Aires Prov., Argentina). The variables considered were: croaker and striped weak fish densities and depth. Discriminant factor analysis indicates the formation of two and six strata for the southern and northern areas respectively. The adequate confidential limits of the estimated biomass for each strata obtained for different species, indicate that the criteria for stratification is satisfactory. The number of catches by strata was...
Tipo: Journal Contribution
Palavras-chave: Fishery surveys; Coastal fisheries; Demersal fisheries; Statistical sampling; Variance analysis; Surveys; Demersal fisheries; Coastal fisheries; Surveys; Http://aims.fao.org/aos/agrovoc/c_2173; Http://aims.fao.org/aos/agrovoc/c_1696; Http://aims.fao.org/aos/agrovoc/c_7537.
Ano: 1998
URL: http://hdl.handle.net/1834/2470

Résultats généraux de la pêche maritime sénégalaise 2001
Provedor de dados: 20
Tipo: Report
Palavras-chave: Artisanal fishing; Commercial fishing; Demersal fisheries; Fish catch statistics; Fishery economics; Fishery statistics; Demersal fisheries; Http://aims.fao.org/aos/agrovoc/c_2173.
Ano: 2002
URL: http://hdl.handle.net/1834/1530

Résultats généraux des pêches maritimes 2005
Provedor de dados: 20
This document presents the Senegalese maritime fishing statistics in 2005 with the catch from  the artisanal fisheries, the industrial fisheries as well as exports and the value of commercial coating.The document also informs on the number of estimated canoes , the estimated number of fishermen, consumption of fresh fish  product and processed products. The document also shows  fisheries statistics by  marine areas.
Tipo: Report
Palavras-chave: 1603; Commercial fishing; Artisanal fishing; Cephalopod fisheries; Demersal fisheries; Fisheries; Fishery statistics; Fishing vessels statistics; Marine fisheries; Mollusc fisheries; Pelagic fisheries; Shrimp fisheries; Demersal fisheries; Fisheries; Marine fisheries; Pelagic fisheries; Http://aims.fao.org/aos/agrovoc/c_2173; Http://aims.fao.org/aos/agrovoc/c_2934; Http://aims.fao.org/aos/agrovoc/c_4611; Http://aims.fao.org/aos/agrovoc/c_5659.
Ano: 2007
URL: http://hdl.handle.net/1834/2248

Résultats généraux des pêches maritimes 2006
Provedor de dados: 20
This document presents the Senegalese maritime fishing statistics in 2006 with the catch from  the artisanal fisheries, the industrial fisheries as well as exports and the value of commercial coating.The document also informs on the number of estimated canoes , the estimated number of fishermen, consumption of fresh fish  product and processed products. The document also shows  fisheries statistics by  marine areas.
Tipo: Report
Palavras-chave: 1603; Commercial fishing; Cephalopod fisheries; Coastal fisheries; Demersal fisheries; Fisheries; Fish catch statistics; Fishery economics; Fishery industry; Fishery data; Fishery statistics; Fishing vessels statistics; Marine fisheries; Fisheries; Demersal fisheries; Fishery data; Marine fisheries; Coastal fisheries; Http://aims.fao.org/aos/agrovoc/c_2934; Http://aims.fao.org/aos/agrovoc/c_2173; Http://aims.fao.org/aos/agrovoc/c_29788; Http://aims.fao.org/aos/agrovoc/c_4611; Http://aims.fao.org/aos/agrovoc/c_1696.
Ano: 2007
URL: http://hdl.handle.net/1834/2250

Estimation par chalutage des ressources démersales du plateau continental mauritanien:Missions du N/O N'Diago ND 8703D (septembre-octobre 1986 et mars-avril 1987)
Provedor de dados: 20
Autores: Girardin, M.
Tipo: Journal Contribution
Palavras-chave: Estimation population; Fishery technology; Fish counters; Demersal fish; Demersal fisheries.
Ano: 1987
URL: http://hdl.handle.net/1834/4760

Estimación de la biomasa de los recursos demersales en el golfo de Guayaquil (junio 2007)
Provedor de dados: 20
Autores: Herrera, M.; Peralta, M.; Coello, D.; Elías, E.; León, J.; Cuadra, T. de la.
Se presentan los resultados obtenidos del crucero T07/06/02 D, realizado a bordo del B/I TOHALLI del Instituto Nacional de Pesca, en el Golfo de Guayaquil del 3 al 21 de junio de 2007; el estudio se complementa con información sobre condiciones físicas, químicas y planctónicas del medio marino. Tanto densidades como biomasas de las principales especies capturadas presentan disminución en sus estimados, lo que reafirma el paulatino decremento reportado en campañas anteriores. La especie chazo y camotillo presentan una distribución un tanto similar, la primera cercana al límite oeste del Golfo, en tanto que la segunda comprendió la parte central del mismo. Las densidades planctónicas obtenidas serían el resultado de condiciones oceanográficas actuales...
Tipo: Journal Contribution
Palavras-chave: Demersal fisheries; Biomass; Density (population); Biological sampling.
Ano: 2010
URL: http://hdl.handle.net/1834/4797

Redes de arrstre de gran abertura vertical y alta velocidad empleadas en la pesca comercial de la region austral del Atlantico Sudoccidental.
Provedor de dados: 20
Autores: Martini, L.
Fishing activities with trawl nets used by the commercial fleet in the continental slope of the Southwest Atlantic are quite different from those developed in the Argentine shelf because, in the former, depths are very variable and slopes are more marked: therefore, fishing procedures are quite different. In this work, the most important differences are described: fish species, fishing gear, type of vessel and machinery on deck, as well as the training and experience of skippers.
Tipo: Book Section
Palavras-chave: Trawl nets; Commercial fishing; Fishing technology; Demersal fisheries; Demersal fisheries; Http://aims.fao.org/aos/agrovoc/c_2173.
Ano: 2001
URL: http://hdl.handle.net/1834/2588

Evolution et activité des principales flottilles industrielles démersales en Mauritanie depuis 1980
Provedor de dados: 20
Autores: Girardin, M.
L’évolution (1980-1987) des diverses flottes démersales de chalutiers essentiellement : congélateurs céphalopodiers, glaciers non spécialisés, glaciers spécialisés (merlu – crevettes) est décrite. Les données de débarquement, fragmentaires pour certaines pêcheries et/ou non encore exploitées en détail, concernent les années 1984, 1986 et 1987 pour les glaciers non spécialisés et, uniquement 1987 pour les autres flottilles. A partir de ces informations relatives à l’effort de pêche et aux débarquements, les tendances générales et les résultats de ces flottilles sont analysés.
Tipo: Journal Contribution
Palavras-chave: Cephalopod fisheries; Commercial fishing; Fishery resources; Fishing effort; Fishing gear; Fishing vessels; Stock assessment; Demersal fisheries; Stock assessment; Fishery resources; Fishing effort; Fishing gear; Fishing vessels; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_2942; Http://aims.fao.org/aos/agrovoc/c_24027; Http://aims.fao.org/aos/agrovoc/c_2946; Http://aims.fao.org/aos/agrovoc/c_2954.
Ano: 1988
URL: http://hdl.handle.net/1834/1172

Análisis secuencial de la población de polaca (Micromesistius australis) en el período 1987-1997 ajustado con valores de rendimiento por unidad de esfuerzo de pesqueros comerciales.
Provedor de dados: 20
Autores: Wöhler, O.C.; Cordo, H.D.; Hansen, J.E.; Cassia, M.C.
The current status of southern blue whiting Micromesistius australis stock is described. A single, closed fish population is assumed to inhabit the SW Atlantic. Based on catch data corresponding to years 1987-1997, a sequential analysis on the stock is carried out (Cohort Analysis). Under an adaptative framework, catch per unit of effort data from commercial vessels are used to fit the model. Two commercial fleets are used in the fitting, i.e. Polish vessels (1987-1994)and Argentine surimi factory vessels (1991-1997). Results indicate that both, total stock biomass and spawning stock biomass would have declined. Total biomass would have decreased from a maximum close to 1.4 million tons in 1990 down to 0.5 mt in 1997 whereas the current spawning stock...
Tipo: Journal Contribution
Palavras-chave: Stock assessment; Fishery management; Catch/effort; Recruitment; Biomass; Demersal fisheries; Demersal fisheries; Stock assessment; Fishery management; Biomass; Http://aims.fao.org/aos/agrovoc/c_2173; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_24026; Http://aims.fao.org/aos/agrovoc/c_926.
Ano: 2001
URL: http://hdl.handle.net/1834/1867

Resultats generaux de la peche maritime senegalaise
Provedor de dados: 20
Autores: Direction des Pêches Maritimes.
Tipo: Report
Palavras-chave: Statistique de peche; Fishery economics; Fishery statistics; Exportation; Fish catch statistics; Peche industrielle; Capture; Flotille de peche; Senegal; Demersal fisheries; Pelagic fisheries; Stocks; Peche artisanale; Fisheries statistics.
Ano: 2003
URL: http://hdl.handle.net/1834/769

Les interactions dans les pêcheries démersales côtières sénégalaises
Provedor de dados: 20
Autores: Barry, M.D.
Les pêcheries artisanales et industrielles sénégalaises se côtoient avec des moyens et des stratégies différents et développent des relations de complémentarité et de concurrence pour l’exploitation des ressources halieutiques.
Tipo: Working Paper
Palavras-chave: Demersal fisheries; Artisanal fishing; Fishery industry.
Ano: 1996
URL: http://hdl.handle.net/1834/815

Estudios sobre la edad y crecimiento de la Palma Calamus brachysomus (Lockington) (Pisces: Sparidae) en aguas ecuatorianas
Provedor de dados: 20
Autores: Martínez, J.
342 specimens of sparid Calamus brachysomus ”Palma”, collected during a demersal trawl survey by the R. V. Tohallí in April and May1983, were examined. The different techniques used to prepare scales and otoliths for ageing are described and analysed. The otoliths were determined to be the most reliable for ageing studies; 87% of otoliths were readable. The rings observed were assumed to be annual. The mean lengths at age were used to determine the parameters of the Von Bertalanffy growth formula, giving: Lt=50.13(1-e-0.1473(t+2.0704)). The growth curve obtained must be considered provisional due to possible biases in the interpretation of the otoliths, and also due to those arising from the selectivity of the fishing gear.
Tipo: Journal Contribution
Palavras-chave: Demersal fisheries; Age; Growth; Growth curves; Otoliths; Otolith reading; Demersal fisheries; Growth; Otoliths; Age; Http://aims.fao.org/aos/agrovoc/c_2173; Http://aims.fao.org/aos/agrovoc/c_3394; Http://aims.fao.org/aos/agrovoc/c_27091; Http://aims.fao.org/aos/agrovoc/c_186.
Ano: 1985
URL: http://hdl.handle.net/1834/3226

A mothership dory fishing operation in Seychelles: results of the first voyage of the locally owned vessel Pecheur Breton, March - May 1991
Provedor de dados: 20
Autores: Mees, C. C.
A Mother ship dory fishing operation was conducted in Seychelles waters by the vessel Pecheur Breton and 11 catcher boats during 1991. This venture was carried out over a 72 day period from 2nd March 1991 to 14 May 1991 and 246 tonnes of fish were caught.
Tipo: Report
Palavras-chave: Demersal fisheries; Fishing operations; Mother ships; Catch/effort.
Ano: 1991
URL: http://hdl.handle.net/1834/5122

Los recursos de peces demersales de la Plataforma Continental del Ecuador. Parte uno. Distribución, abundancia y variaciones
Provedor de dados: 20
Autores: Herdson, D.; Rodríguez, W.; Martínez, J.
A survey of demersal fish resources of the Continental Shelf of Ecuador was carried out between October 1980 an July 1985 by the National Fisheries Institute of Ecuador, with British Technical Cooperation. This report deals with the stock assessment part of the work. In the course of seven cruises, 366 valid diurnal hauls were made with a high-opening bottom trawl. The demersal fish resources were estimated by swept area methods and the results are presented. The overall average standing stock of demersal fish was 78 000 t of which 22 000 t was good fish, but 36 000 t were gurnards (Triglidae) and 3 000 t of unusable fish. The main stocks were gurnards, grunts and croakers, sharks and corvinas Cynoscion spp. The southern areas especially the Gulf of...
Tipo: Journal Contribution
Palavras-chave: Demersal fisheries; Geographical distribution; Abundance; Biomass; Demersal fisheries; Geographical distribution; Biomass; Http://aims.fao.org/aos/agrovoc/c_2173; Http://aims.fao.org/aos/agrovoc/c_5083; Http://aims.fao.org/aos/agrovoc/c_926.
Ano: 1985
URL: http://hdl.handle.net/1834/3228

Estudio sobre la calidad y utilización de algunas especies de pescado demersal de tamaño pequeño en el Ecuador
Provedor de dados: 20
Autores: Montaño, R.; Bostock, T.; Andrade, B.
In the paper presented, comparisons are made between 12 species of small demersal fish (less than 30 cm O.L.) commonly found in the shrimp by-catch. Each species is described, estimates are made as to their relative abundance and fishery and complete data are presented on processing: filets, deboned minces. Taste panel work was carried out on cooked fillets as well as products made from the deboned mince and chemical analyses were made on all the species. The possibility of future increased utilization of these species is discussed.
Tipo: Journal Contribution
Palavras-chave: Demersal fisheries; By catch; Shrimp fisheries; Processing fishery products; Organoleptic properties; Demersal fisheries; Organoleptic properties; Http://aims.fao.org/aos/agrovoc/c_2173; Http://aims.fao.org/aos/agrovoc/c_5399.
Ano: 1985
URL: http://hdl.handle.net/1834/3156

Evaluation par chalutage des stocks démersaux du plateau continental mauritanien en 1987 et 1988
Provedor de dados: 20
Autores: Girardin, M.
Résumé : Les 6 campagnes de chalutage réalisées en 1987 et 1988 ont permis d’évaluer les indices d’abondance des diverses ressources démersales, essentiellement poisson et céphalopodes, par strate, zone et, pour l’ensemble du plateau continental. Des estimations de biomasse apparente (77'000 tonnes en 1988) et de potentiel maximum exploitable (59'200 t. en 1988) ont aussi été avancées. La comparaison de ces résultats avec ceux des années 1982-1984 a fait ressortir une nette tendance à l’amélioration générale depuis 1987. Si la situation de la zone nord (Cap Blanc) demeure encore préoccupante par rapport à celle du sud, l’abondance globale des ressources du plateau a retrouvé un niveau peu inférieur à celui des années 1982-1983. L’influence probable de...
Tipo: Journal Contribution
Palavras-chave: Demersal fisheries; Stock assessment; Trawling.
Ano: 1990
URL: http://hdl.handle.net/1834/807

Áreas de distribución y abundancia de los recursos demersales en la plataforma continental del Golfo de Guayaquil
Provedor de dados: 20
Autores: Revelo, W.
In the Dermersal Fishing period of the Cruise T94/11/05 D-O (15/11/94-23/11/94) an area of 12,520.9 km2 was covered, that is. The Ecuadorean Shelf between the 02°10'0”S - 80°0'0”W and 14 to 115 meters deep throughout th Ecuadorean Continental Shelf of the Guayaquil Gulf area. A total of 78 species was identified as follows: 74 of this 95%, two of crustaceans, one of molluscan and one of holothurid (Sea cucumber). The estimated total biomass of demersal fish was of 78, 384.9 t, from which the 52% was concentrated between the 02°48'9”S and 03°15'8”S. The most abundant species were: Gallineta (Prionotus stephanophrys)(48,776.0 t), Corvina (Cynoscion spp.) (11,241.7 t), Barriga juma (Larimus spp) (4,111.8 t), Cabezudo (Caulolatilus spp) (2,554.2 t) and Torno...
Tipo: Journal Contribution
Palavras-chave: Geographical distribution; Demersal fisheries; Fishery resources; Geographical distribution; Demersal fisheries; Fishery resources; Http://aims.fao.org/aos/agrovoc/c_5083; Http://aims.fao.org/aos/agrovoc/c_2173; Http://aims.fao.org/aos/agrovoc/c_2942.
Ano: 1993
URL: http://hdl.handle.net/1834/3076

Evaluación de polaca (Micromesistius australis) en el Atlántico Sudoccidental. Período 1987-2001
Provedor de dados: 20
Autores: Wöhler, O.C.; Hansen, J.E.; Cassia, M.C.; Cordo, H.D.
Period 1987-2001. A diagnosis of the current state of Southern blue whiting (Micromesistius australis) stock in the Southwest Atlantic was carried out on the basis of catches corresponding to the period 1987-2001 as reported by the Argentine fleet and also by vessels operating around Malvinas Islands. Abundance and current fishing mortality rates were estimated, and the biomass evolution in the long term resulting from some possible exploitation strategies based on different management strategies were projected. A sequential population analysis calibrated under a conceptual adjustable framework with five independent abundance indices was carried out. The effects on the biomass estimates were analysed by adopting different selection patterns and calibration...
Tipo: Journal Contribution
Palavras-chave: Fishery management; Biomass; Demersal fisheries; Stock assessment; Biomass; Fishery management; Demersal fisheries; Stock assessment; Http://aims.fao.org/aos/agrovoc/c_926; Http://aims.fao.org/aos/agrovoc/c_24026; Http://aims.fao.org/aos/agrovoc/c_2173; Http://aims.fao.org/aos/agrovoc/c_24251.
Ano: 2007
URL: http://hdl.handle.net/1834/2526

Estadística pesquera de peces demersales australes en el Atlántico Sudoccidental (período 1980-2002)
Provedor de dados: 20
Autores: Gorini, F.L.; Di Marco, E.; Wöhler, O.C.
Fishery statistics of austral demersal fishes in the Southwest Atlantic (1980-2002 period). A synthesis of the information available about catches of austral demersal fishes and fishing efforts reported by different fleets that operated in the SW Atlantic between 34° S-58° S in the 1980-2002 period is made. Species included in the analysis were southern blue whiting (Micromesistius australis), patagonian hoki (Macruronus magellanicus), patagonian toothfish (Dissostichus eleginoides), red cod (Salilota australis), southern hake (Merluccius australis) and ling (Genypterus blacodes). Annual and monthly catches, fishing grounds, number of vessels that participated in the fisheries, main landing ports and other characteristic of interest are presented. When it...
Tipo: Journal Contribution
Palavras-chave: Demersal fisheries; Landing statistics; Catch statistics; Fishing effort; Demersal fisheries; Fishing effort; Http://aims.fao.org/aos/agrovoc/c_2173; Http://aims.fao.org/aos/agrovoc/c_24027.
Ano: 2007
URL: http://hdl.handle.net/1834/2559

Description de la pêcherie démersale céphalopodière en Mauritanie (1990 – 1992)
Provedor de dados: 20
Autores: Inejih, C.A.O.
Résumé : Le présent article donne une description  de l’évolution des paramètres descripteurs de la pêcherie de céphalopodes. Il utilise les statistiques de pêche du CNROP. Les paramètres décrits sont l’effort (nombre de licences, caractéristiques physiques des bateaux, jours de pêche), les captures et les prises par unité d’effort. Les débarquements totaux ont enregistré une hausse atteignant 42000 tonnes en 1992. Cette hausse est due à celle des rendements importants observés pour le poulpe ; ceux des poissons ont diminué continuellement depuis 1990, notamment chez les glaciers. L’effort, en jour de pêche, a enregistré une baisse progressive pour les congélateurs. Par contre,  il a presque doublé de 1990 à 1991 chez les glaciers. Les deux modes de...
Tipo: Journal Contribution
Palavras-chave: Demersal fisheries; Fishing effort; Cephalopod fisheries; Octopus fisheries.
Ano: 1996
URL: http://hdl.handle.net/1834/239

Evaluación acústica de recursos pesqueros pelágicos frente a la costa sur ecuatoriana durante septiembre de 1995
Provedor de dados: 20
Autores: Chalen, X.; Vicuña, H.
Nineteen lightday rectangular transects were made 16 in the area of the Gulf of Guayaquil (Ecuador), and 3 in an oceanic area at the west of the Gulf of Guayaquil, this was the second part of research cruise, oriented to the evaluation of the small pelagic fish stocks, it was made between september 14th and 27th, 1995. The SIMRAD EK-500 acoustic system was used, installed on board of the National Research Institute (INP) R/V Tohallí. At the same time, people from the INP's Fisheries Observer Program were on four private enterprises vessels, while they were fishing in the same Gulf's area. They also made the biological sample of the commercial catch, for future relation with the results from the acoustic evaluation. The V/R Tohallí principal catch was jack...
Tipo: Journal Contribution
Palavras-chave: Geographical distribution; Abundance; Demersal fisheries; Fishery resources; Continental shelves; Echo surveys; Geographical distribution; Demersal fisheries; Fishery resources; Continental shelves; Http://aims.fao.org/aos/agrovoc/c_5083; Http://aims.fao.org/aos/agrovoc/c_2173; Http://aims.fao.org/aos/agrovoc/c_2942; Http://aims.fao.org/aos/agrovoc/c_32413.
Ano: 1996
URL: http://hdl.handle.net/1834/2962

Résultats généraux des pêches maritimes 2004
Provedor de dados: 20
This document presents the Senegalese maritime fishing statistics in 2004 with the catch from  the artisanal fisheries, the industrial fisheries as well as exports and the value of commercial coating.The document also informs on the number of estimated canoes , the estimated number of fishermen, consumption of fresh fish  product and processed products. The document also shows  fisheries statistics by  marine areas.
Tipo: Report
Palavras-chave: 1603; Artisanal fishing; Fish catch statistics; Fisheries; Coastal fisheries; Demersal fisheries; Pelagic fisheries; Marine fisheries; Marine molluscs; Marine resources; Marketing; Capture fishery economics; Multispecies fisheries; Fisheries; Demersal fisheries; Marine fisheries; Marine resources; Marketing; Coastal fisheries; Pelagic fisheries; Multispecies fisheries; Http://aims.fao.org/aos/agrovoc/c_2934; Http://aims.fao.org/aos/agrovoc/c_2173; Http://aims.fao.org/aos/agrovoc/c_4611; Http://aims.fao.org/aos/agrovoc/c_28012; Http://aims.fao.org/aos/agrovoc/c_4620; Http://aims.fao.org/aos/agrovoc/c_1696; Http://aims.fao.org/aos/agrovoc/c_5659; Http://aims.fao.org/aos/agrovoc/c_4987.
Ano: 2007
URL: http://hdl.handle.net/1834/2249

Distribución y abundancia de los recursos demersales en la plataforma continental del Ecuador durante junio de 1995
Provedor de dados: 20
Autores: Revelo, W.
The demersal phase (from june 24th to 09th, 1995) of cruise T95/06/02 DO, covered an area of 23833,6 km2 between 01° 04'1”N - 79° 59'6”O and 03° 22'7”S - 80° 48'0”O, of the Ecuadorian Continental Plataform, the deph range from 13 to 111 meters. 161 species were recorded, divided into 106 oseum fish species, five sharks, nine ray, 37 crustaceans, three molluscan and one holothurid (sea cucumber). Total biomass was estimated as 91685, 5 t, with 68,72% of this biomass distributed between 02° 15'1”S - 03°22'7”S, opposite to Guayaquil Gulf. The most abundant species were: Gallineta (Prionotus stephanophrys) (37283,7 t), Barriga juma (Larimus spp) (16146,2 t), Perela (Paralabrax spp) (14053,4 t), Palometa (Peprilus medius)(9865,3 t) and Cabezudo (Caulolatilus...
Tipo: Journal Contribution
Palavras-chave: Demersal fisheries; Biomass; Geographical distribution; Population density; Demersal fisheries; Biomass; Geographical distribution; Population density; Http://aims.fao.org/aos/agrovoc/c_2173; Http://aims.fao.org/aos/agrovoc/c_926; Http://aims.fao.org/aos/agrovoc/c_5083; Http://aims.fao.org/aos/agrovoc/c_6112.
Ano: 1995
URL: http://hdl.handle.net/1834/3029

L'accaparement des ressources marines ouest africaines: sociétés mixtes de façade et licences de complaisance. Expériences du Sénégal et de la Mauritanie
Provedor de dados: 20
Autores: Niasse, Mamadou Lamine; Seck, Madieng.
Tipo: Book
Palavras-chave: Fishing industry; Socioeconomic aspects; Fishermen; Agreements; Sustainable fishing; Pelagic fisheries; Demersal fisheries; Artisanal fishing; Fishing licenses.
Ano: 2011
URL: http://hdl.handle.net/1834/4574

Catálogo Fauna Ictica asociada a la pesquería chilena de orange roughy (Hoplotesthus atlanticus)
Provedor de dados: 20
Autores: Tascheri, R.; Pequeño, G.
El orange roughy (Hoplostesthus atlanticus, Collet 1889), es una especie de aguas profundas de un alto valor comercial, que presenta una amplia distribucion geografica en los oceanos atlantico, Indico y Paci­fico. Los estudios de edad de Orange roughy muestra que es una especie de crecimiento lento que alcanzari­a sobre los 100 años de edad. La actividad pesquera en torno a este recurso, de reciente desarrollo en Chile, ha permitido la recolección de muestras de la fauna ictica asociada a esta pesqueríi­a que reviste especial especial interés cienti­fico, en áreas como la zoologi­a y biogeografi­a , estudios que unidos a datos geologicos pueden contribuir a responder importantes interrogantes como la distribucion de orange roughy en areas geograficas tan...
Tipo: Book
Palavras-chave: Fauna; Demersal fisheries; Fish physiology; Fauna; Demersal fisheries; Http://aims.fao.org/aos/agrovoc/c_2821; Http://aims.fao.org/aos/agrovoc/c_2173.
Ano: 2003
URL: http://hdl.handle.net/1834/1401

Los recursos demersales de la Plataforma Continental del Ecuador. Parte dos. Producción potencial y recomendaciones para la utilización del recurso de pesca blanca en el Ecuador
Provedor de dados: 20
Autores: Herdson, D.; Rodríguez, W.; Martínez, J.
The stock estimates obtained during the demersal fish resources survey in 1980-1985 were used to estimate the potential yields of demersal stocks of the Ecuadorian Continental Shelf. The difficulties of predicting yields for multispecies fisheries are discussed and modified version of the Gulland model was adopted. The potential realizable yields for multispecies fisheries are discussed and a modified version of the Gulland model was adopted. The potential realizable yield was calculated to be between 15,000 t and 20,000 t per year, of which 2,000 t is good quality fish, 5,000 t per year of small and medium fish and 8,000 t of gurnards. The majority of these resources are at present being fished at around their optimum levels and any further developments...
Tipo: Journal Contribution
Palavras-chave: Demersal fisheries; Continental shelves; Yield predictions; Exploitation; Demersal fisheries; Continental shelves; Http://aims.fao.org/aos/agrovoc/c_2173; Http://aims.fao.org/aos/agrovoc/c_32413.
Ano: 1985
URL: http://hdl.handle.net/1834/3227

Evaluación de merluza de cola (Macruronus magellanicus) en el Atlántico Sudoccidental. Período 1985-2001
Provedor de dados: 20
Autores: Wöhler, O.C.; Hansen, J.E.; Giussi, A.R.; Cordo, H.D.
Period 1985-2001. A stock assessment of Patagonian hoki of the Southwest Atlantic was carried out by using data from the years 1985-2001. A cohort analysis, fitted with some survey abundance indices was used in an adaptive conceptual framework. Simulation trials were performed to project the evolution of the fishery, to evaluate the risk of over-fish the stock under different exploitation levels, and to estimate Biologically Acceptable Catches (BAC). Both total biomass and spawning stock biomass showed increasing trends resulting from four strong year classes (1993, 1995, 1996 and 1998). Total biomass at the beginning of 2001 was estimated to be 2.5 million tons, and spawning stock biomass at the spawning time (August) was estimated to be around 1.28...
Tipo: Journal Contribution
Palavras-chave: Stock assessment; Fishery management; Biomass; Risks; Demersal fisheries; Stock assessment; Fishery management; Biomass; Demersal fisheries; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_24026; Http://aims.fao.org/aos/agrovoc/c_926; Http://aims.fao.org/aos/agrovoc/c_2173.
Ano: 2007
URL: http://hdl.handle.net/1834/2525

Seychelles demersal fishery an analysis of data relating to four key demersal species
Provedor de dados: 20
Autores: Mees, C. C.
Seychelles demersal fishery is described based on historic catch and effort data, and on biological studies of four key species: Batrican (Pristipomoides filamentosus), Job Gris (Aprion virescens), Bourgeois (Lutjanus sebae), and Maconde (Epinephelus chlorostigma).  During the period 1985 - 1990 demersal species formed on average 33_310= of the total annual landings of the local fishing fleet.  Schooners and whalers were the most important boat types engaging in this fishery, and more recently, a mother ship dory fishing operation. Demersal species constituted 77_310= of all local fish exports over this period. In 1990 approximately 2,000 tonnes of demersal species were landed of which 500 tonnes were exported.  Lutjanids comprised 62_310= of the demersal...
Tipo: Report
Palavras-chave: Demersal fisheries; Fishery data; Fish catch statistics; Catch/effort; Yield predictions; Catch composition; Pristipomoides filamentosus; Aprion virescens; Lutjanus sebae; Epinephelus chlorostigma.
Ano: 1992
URL: http://hdl.handle.net/1834/5114

Etats des lieux nationaux - Projet CEPIA: dynamiques halieutiques et systèmes de gestion des pêches
Provedor de dados: 20
Autores: Projet CEPIA, Construire Ensemble une gestion des Pêches Intégrant les Amp, Dakar (Sénégal); Centre de Recherches Océanographiques de Dakar Thiaroye, Dakar (Sénégal); Djiga Thiaw; Moustapha Déme; Hamed Diaw Diadhiou; Adama Mbaye.
Commission Sous Régionale des Pêches
Tipo: Report
Palavras-chave: Fisheries management; Fishery legislation; Ecosystems; Demersal fisheries; Fishery policy; Protected areas.
Ano: 2011
URL: http://hdl.handle.net/1834/4585

Nuevos registros de peces óseos para el Caribe colombiano de los órdenes Beryciformes, Zeiformes, Perciformes y Tetraodontiformes
Provedor de dados: 20
Autores: Roa-Varón, A.; Saavedra-Díaz, L.M.; Acero-P., A.; Mejía-M., L.S.; Navas-S., G.R.
Between October and August 1999 five cruises were made on board of R/V Ancón, across the Colombian Caribbean slope, from Punta Estrella (Guajira), near the Venezuelan border, to Cabo Tiburón (Chocó), near the Panamá border. Eighty trawls were made between 200 and 500 m depth with a semi-balloon net. Twelve new records of fishes for the Colombian Caribbean in the orders Beryciformes, Zeiformes, Perciformes and Tetraodontiformes were collected. Plectranthias garrupellus (Serranidae), Benthodesmus tenuis and B. simonyi (Trichiuridae) are new records for the Caribbean; Diplospinnus multistriatus family (Gempylidae) is a new record for the southern Caribbean.
Tipo: Journal Contribution
Palavras-chave: Demersal fisheries; New records; Surface slope; Demersal fisheries; Http://aims.fao.org/aos/agrovoc/c_2173.
Ano: 2003
URL: http://hdl.handle.net/1834/3065

Résultats généraux de la pêche maritime sénégalaise 1999
Provedor de dados: 20
﻿Les captures globales dans la Zone Economique Exclusive ( ZEE) ont    augmenté, passant de 443 651 tonnes en 1998 à 479 308 tonnes en 1999,    soit une hausse de l’ordre de 8 %.    1- PECHE ARTISANALE:    Les débarquements ont baissé de 3,5 % en volume et 8 % en valeur. Ce    fléchissement est lié à la forte baisse enregistrée dans la région de Thiès qui    assure plus de 70 % de la production.    La composition des captures laisse apparaître une prédominance des    sardinelles (plus de 60 % ).    L’année 1999 a enregistré une production record de poulpe sur la    grande côte, avec une hausse de 220 %.    Le parc piroguier n’a pas connu d’évolution significative.    2- PECHE INDUSTRIELLE    Le nombre de navire en activité dans la ZEE (Sénégalais et...
Tipo: Report
Palavras-chave: Fishery statistics; Multispecies fisheries; Fishery industry; Artisanal fishing; Demersal fisheries; Demersal fisheries; Multispecies fisheries; Http://aims.fao.org/aos/agrovoc/c_2173; Http://aims.fao.org/aos/agrovoc/c_4987.
Ano: 2000
URL: http://hdl.handle.net/1834/1527

Caracterización ecológica de las asociaciones de peces demersales del Caribe colombiano Norte, con énfasis en los pargros (Lutjanidae)
Provedor de dados: 20
Autores: Manjarrés, L.; García, C.; Acero-P., A.
The mean objetives ofthe present study were to establish the existence of demersal fish associations in the shelf and superior slope of the Colombian Caribbean northern zone and determine if the biotical patterns determineted by these associations are correlationed with the patterns structured by the environmental conditions evaluated. Data were taken from three demersal resources assessment surveys of the INPA-VECEP/UE Program, carried out during the period 1995-1996. The station groups were not consistent in terms of species composition along the different periods. The dominant characteristics of demersal species associations was the absence of temporal persistence. Only it was possible to find some partial associations which remain during a maximum...
Tipo: Journal Contribution
Palavras-chave: Demersal fisheries; Ecology; Demersal fisheries; Ecology; Http://aims.fao.org/aos/agrovoc/c_2173; Http://aims.fao.org/aos/agrovoc/c_2467.
Ano: 2001
URL: http://hdl.handle.net/1834/3181

Resultados de la campaña de evaluación de peces demersales australes efectuada en el verano de 1997.
Provedor de dados: 20
Autores: Wöhler, O.C.; Giussi, A.R.; García de la Rosa, S.B.; Sánchez, M.F.; Hansen, J.E.; Cordo, H.D.; Alvarez Colombo, G.L.; Incorvaia, I.S.; Reta, R.; Abachián, V.E.
An assessment survey on the austral fish was carried out during the summer 1997 on both the shelf and slope off southern Argentina. The cruise covered 101,508 nm2 between 45° and 54° 30'S and depths between 50 and 400 m. The survey did not include the area controlled by the United Kingdom. Considering the total area as an undivided stratum, a random sampling was used to estimate demersal fish biomass and a delta distribution-based model to evaluate mean densities. Out of the forty five species caught 28 were bony fish and 17 elasmobranch. Four cephalopod mollusc species were also identified. A biomass of 3.2 million tons (CI(95o/o): 1.90 - 6.06 millions) proved that longtail hake was the most abundant resource within the region followed by common hake...
Tipo: Journal Contribution
Palavras-chave: Demersal fisheries; Fishery surveys; Biomass; Population structure; Feeding; Parasitism; Environmental conditions.
Ano: 1999
URL: http://hdl.handle.net/1834/5782

Seasonal and Long-Term Changes in the Distribution and Abundance of Demersal Fishery Resources in Continental Shelf Waters off Ghana, West Africa
Provedor de dados: 20
Autores: Koranteng, K.A.
Between 1963 and 1990, the abundance of demersal fishery resources in Ghana’s shelf waters underwent significant changes whereby the relative importance of major species changed in every trawl survey conducted in the area. Triggerfish (Balistes capriscus) dominated this ecosystem for nearly twenty years (from early 1970s to late 1980s) displacing bigeye grunt (Brachydeuterus auritus) as the most abundant species.The density of all demersal species (excluding triggerfish) assessed in bottom trawl surveys decreased from 50 kg ha-1 in 1963-64 to 32.4 kg ha-1 in 1990.  The lowest density of 22.5 kg ha-1 occurred between 1973 and 1977.  Density of triggerfish was high between 1973 and 1982, reaching a value of 28 kg ha-1 between depths of 30 and 50 m.  Its...
Tipo: Journal Contribution
Palavras-chave: Demersal fisheries; Trawls; Fishery surveys.
Ano: 2001
URL: http://hdl.handle.net/1834/241

Palangre de fondo en el Mar Argentino. Parte II. Resultados de los lances efectuados por el buque de investigación pesquera "Dr. Eduardo L.Holmberg".
Provedor de dados: 20
Autores: Maeda, H.; Ercoli, R.; Fukada, K.; Garcia, J.C.
Bathymetric changes in groundfish catch composition are analyzed, on the basis of routine reports of 106 bottom longline strings. The project was conducted from 12 December 1986 to 29 November 1987, covering areas from coastal waters to the outer shelf of the continental shelf off Argentina from 36° to 55°S. As a preliminary step to the analysis, the validity of each factor as probable explanatory variable in each area, was analyzed with consideration as to their range and variation. Obtained results show that the kingclip (Genypterus blacodes), a main objective of the project, could become one of the most profitable target species of the high-sea bottom longline, in areas along the outer edge of the continental shelf, at bottom depths slightly below 200...
Tipo: Journal Contribution
Palavras-chave: Longlining; Experimental fishing; Demersal fisheries; Demersal fisheries; Http://aims.fao.org/aos/agrovoc/c_2173.
Ano: 1994
URL: http://hdl.handle.net/1834/1930

Areas ícticas costeras en la Zona Común de Pesca Argentino-Uruguaya (ZCPAU) y en el litoral de la Provincia de Buenos Aires, 1994
Provedor de dados: 20
Autores: Lasta, C.A.; Bremec, C.; Mianzan, H.W.
Demersal fisheries evaluation data obtained during the cruise H-13/94, in the areas of El Rincón (Buenos Aires Prov., Argentina) and the Argentine-Uruguayan Common Fishing Zone, are analyzed. Species distribution areas are defined through cluster analysis among stations (Q mode), using Bray-Curtis index applied to species abundance data: number of individuals/mn2 and t/mn2. Regarding coastal resources are dynamic and opportunistic, information.
Tipo: Journal Contribution
Palavras-chave: Demersal fisheries; Coastal fisheries; Marine fish; Ecological distribution; Demersal fisheries; Coastal fisheries; Http://aims.fao.org/aos/agrovoc/c_2173; Http://aims.fao.org/aos/agrovoc/c_1696.
Ano: 1998
URL: http://hdl.handle.net/1834/2467