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Registros recuperados: 73
Primeira ... 1234 ... Última
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A dynamic model of the Bay of Biscay pelagic fleet simulating fishing trip choice: the response to the closure of the European anchovy (Engraulis encrasicolus) fishery in 2005 ArchiMer
Vermard, Youen; Marchal, Paul; Mahevas, Stephanie; Thebaud, Olivier.
The scope of this paper is to describe, evaluate, and forecast fishing trip choices of the Bay of Biscay pelagic fleet using random utility modeling (RUM). First, alternative fishing trip choices of this fleet were identified using multivariate statistical methods based on species landings weighted by value and defined as distinct fishing activity or fisheries (termed metiers). A RUM was specified, which included trip components as attributes during the period 20012004 ( a lagged percentage of the value per unit of effort of the main species caught, total value per unit of effort, and inertia in terms of changes from one metier to another). For the main metiers, the proportion of correct effort allocation is 90% during the calibration period of 2001-2004....
Tipo: Text Palavras-chave: Management; Métier; Fishing effort; Fisher's behavior; RUM.
Ano: 2008 URL: http://archimer.ifremer.fr/doc/2008/publication-6096.pdf
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Aménagement des ressources halieutiques au Sénégal: partenariat et démarche préventive OceanDocs
Ndiaye, O..
Le gouvernement du Sénégal s’est engagé, en élaborant le Plan directeur des pêches en 1998, à mettre en oeuvre « une politique de gestion prudentielle » de la ressource halieutique, conformément au Code de conduite pour une pêche responsable (FAO,1995). D’où l'intérêt d’examiner les contraintes à la conservation et à l’exploitation durable de la ressource et comment lever ces contraintes. La situation des pêches est caractérisée par un état critique de la ressource halieutique du fait de plusieurs facteurs, la surpêche entrant en première ligne. Plusieurs contraintes ont été identifiées. Les principales sont l’absence d'une démarche de planification dans la gestion des ressources halieutiques, le problème de l'appropriation de la réglementation, la...
Tipo: Report Palavras-chave: Fishery management; Fishing; Environmental charts; Fishery oceanography; Fishery regulations; Fishing effort; Fishery statistics; Fishery resources; Fishery management; Fishery oceanography; Fishing; Fishing effort; Fishery resources; Http://aims.fao.org/aos/agrovoc/c_24026; Http://aims.fao.org/aos/agrovoc/c_2938; Http://aims.fao.org/aos/agrovoc/c_26950; Http://aims.fao.org/aos/agrovoc/c_24027; Http://aims.fao.org/aos/agrovoc/c_2942.
Ano: 2000 URL: http://hdl.handle.net/1834/1524
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Analyse des donnees collectees lors des embarquements a bord des senneurs bases aux Seychelles (1986-1991) OceanDocs
Hallier, J.P.; Sabadach, B..
From 1986 to 1991, observers on board tuna purse-seiners based in Seychelles allow analysis of data such as oceanographic parameters, aspects of tuna schools and their associated sightings, as well as fishing characteristics (success rate, catches, cpue, species composition, duration of fishing sets). Performances of the four concerned countries (France, Spain, Japan, USSR) are compared.
Tipo: Report Palavras-chave: Fishing effort; Purse seines; Seychelles KATSUWONUS PELAMIS THUNNUS OBSESUS THUNNUS ALBACARES Catch composition Catch/effort Environments Fishery biology Catch composition Fishery biology http://aims.fao.org/aos/agrovoc/c_1384 http://aims.fao.org/aos/agrovoc/c_2937.
Ano: 1993 URL: http://hdl.handle.net/1834/1354
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Áreas potenciales de descarte de merluza para la actividad de la flota comercial argentina OceanDocs
Dato, C.V.; Villarino, M.F.; Cañete, G.R..
To improve the quality of the resource assessment it is necessary to estimate discards and quantify them applying an adequate methodology. The purpose of this work is to detect areas where the activity of the commercial fleet coincides with zones of high concentration of juveniles because they are potential discard areas. To establish possible seasonal and/or interannual variations, length distribution data derived from hake research surveys carried out on board of INIDEP vessels during the 1986-1993 period were analyzed. Samples were grouped per statistical rectangle on the basis of catch weighted average and mean, variance, skewness and kurtosis were calculated. The resulting parameters were subjected to a cluster analysis using the Euclidean distance...
Tipo: Journal Contribution Palavras-chave: Gadoid fisheries; Commercial fishing; Fishing grounds; Juveniles; Fishing effort; Seasonal variations; Fishing grounds; Juveniles; Fishing effort; Http://aims.fao.org/aos/agrovoc/c_2947; Http://aims.fao.org/aos/agrovoc/c_25393; Http://aims.fao.org/aos/agrovoc/c_24027.
Ano: 2006 URL: http://hdl.handle.net/1834/1586
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Biologie et peche du capitaine Lethrinus enigmaticus (Smith) 1959 du banc de Saya de Malha (Ocean Indien) ArchiMer
Lebeau, A; Cueff, J.-c..
I.S.T.P.M. lab of La Reunion (Indian Ocean) studies L. enigmaticus, its taxonomy, morphology, ecology, biology, feeding, reproduction and growth, and its fishing in the La Reunion and Mauritius Islands area.
Tipo: Text Palavras-chave: Lethrinus; Lethrinus nebulosus; Lethrinus borbonicus; Lethrinus caeruleus; Lethrinella xanthocheilus; Lethrinella variegatus; Lethrinus enigmaticus; Fishing; Fishing effort; Growth; Reproduction; Feeding behaviour; Feeding; Organism morphology; Taxonomy; Marine ecology.
Ano: 1975 URL: http://archimer.ifremer.fr/doc/1975/publication-2030.pdf
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Cadre de processus: OceanDocs
Ce Cadre du Processus (PF) pour le Programme Régional des Pêches pour   L'Afrique de l'Ouest (PRAO) ÉTABLI directives des Nations Unies pour l'Élaboration des FAP nationaux à travers un processus participatif par Lequel Les membres des communautés de pêche locales seront, selon Le Prao, Dans la impliqués   et la mise en oeuvre de la ongestion Conception de la pêcherie locale, tout en   maintenant La durabilité des moyens de subsistance locaux Et ainsi le suivi local   de l'effort de pêche. La délimitation des Territoires pour les Droits d'utilisation des Pêches (DUT) dans les pays participants au PRAO et la mise en oeuvre des restrictions sur   L'utilisation des Ressources Marines constitutifs des impacts sociaux importants Aux termes du OP 4.01, de...
Tipo: Other Palavras-chave: Fishery disputes; Coastal fisheries; Environmental effects; Financing; Fishery development; Fishery management; Resource management; Fishing effort; Fishermen; Maritime legislation; Financing; Fishery management; Fishermen; Coastal fisheries; Resource management; Fishing effort; Http://aims.fao.org/aos/agrovoc/c_29785; Http://aims.fao.org/aos/agrovoc/c_24026; Http://aims.fao.org/aos/agrovoc/c_2936; Http://aims.fao.org/aos/agrovoc/c_1696; Http://aims.fao.org/aos/agrovoc/c_6524; Http://aims.fao.org/aos/agrovoc/c_24027.
Ano: 2009 URL: http://hdl.handle.net/1834/3675
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Can modelling the drift of bycaught dolphin stranded carcasses help identify involved fisheries? An exploratory study ArchiMer
Peltier, Hélène; Dabin, Willy; Dars, Cécile; Demaret, Fabien; Doremus, Ghislain; Van Canneyt, Olivier; Laran, Sophie; Mendez-fernadez, Paula; Spitz, Jérôme; Authier, Matthieu; Delphine, Pierre; Ridoux, Vincent.
Between the 1st of February and the March 31, 2017, 793 stranded cetaceans were found along the French Atlantic coasts. Common dolphins made up 84% of these strandings, and most of these presented evidence of death in fishing gear. The aim of this work is to test an approach that could help identify the fisheries potentially involved in a given stranding event. To do this we examined how the distributions of likely areas of mortality of bycaught dolphins, inferred from carcass drift modelling, coincide with fishing effort statistics of various fleets, generated from the Vessel Monitoring System, in the area over the same dates. Using reverse drift modelling, two main mortality areas were identified. A total of 3690 common dolphins (IC95% [2230; 6900]) were...
Tipo: Text Palavras-chave: Dolphins; Strandings; Bycatch; Fishing effort; Reverse drift; Vessel Monitoring System..
Ano: 2020 URL: https://archimer.ifremer.fr/doc/00592/70392/68473.pdf
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Caractérisation biologique et variation des captures de la grande alose (Alosa alosa) par unité d'effort sur le fleuve Adour (Pyrénées Atlantiques, France) ArchiMer
Prouzet, Patrick; Martinet, Jean-pierre; Badia, Jacques.
The study of logbooks from commercial fishermen on the Adour River and commercial samples allowed characterization of the allis shad population (Alosa alosa L.) caught during the period 1988-91. A better knowledge of the influence of hydroclimatic factors (rate of river flow and intensity of tidal coefficient) on the catchability of the species in that never was also obtained. Allis shad are mainly recruited to this fishery from the beginning of April to the end of May: between 78 and 89 % depending on year. Males in the population were on average younger than females. However, at the same age, males were significantly smaller in size and in weight than females. These results reinforce the knowledge already obtained on French stocks in the Loire and...
Tipo: Text Palavras-chave: Alosa alosa; Grande alose ou alose vraie; Clupéidés; Captures; Stock; Pêche; Âge; Débit fluvial; Courant de marée; Atlantique; Alosa alosa; Allis shad; Clupeidae; Catch; Fishing effort; Stock assessment; Age composition; Flow and tidal currents; Atlantic.
Ano: 1994 URL: http://archimer.ifremer.fr/doc/00188/29891/28336.pdf
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Características de la red de cerco "tipo lámpara" y algunos comentarios sobre la flota que la utiliza en la pesca de caballa. OceanDocs
Izzo, A.; Boccanfuso, J..
The composition of the fleet is analyzed. The boats range 50-200 HP of engine and have 9-16 m in length overall. Most of the boats have been improving their equipment (echosounders, new engines) since 1980. An inverse relationship was found between sea surface temperature and CPUE as measured by mackerel catch permit time spent on fishing gounds. Yields are negligible over 20°C with a optimum of 20°C.
Tipo: Journal Contribution Palavras-chave: Buoyancy floats; Fishing effort; Surface temperature; Ballast; Fishing effort; Fishing effort; Fishing effort; Http://aims.fao.org/aos/agrovoc/c_24027; Http://aims.fao.org/aos/agrovoc/c_24027.
Ano: 1993 URL: http://hdl.handle.net/1834/2573
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Catalogue international des activités des flottilles de Manche, approche des interactions techniques ArchiMer
Tetard, A; Boon, M; Bennett, D; Berthou, Patrick; Bossy, P; Casey, J.
This work is the result of collaboration between the English, French, Channel Isles and Belgian laboratories which are involved in a study of the English Channel. Its subject is the activities of fleets and their interactions, and it complements other work on the biogeographical identification of Channel fish and shellfish stocks (published), and on modelling the fleets' interactions as they exploit theresources (in preparation). The concept of a metier is defined as being the use of one fishing gear to catch one or several species targeted during a particular season in a given area. On this basis, 74 metiers were identified during 1989-90. For each metier we give a brief description of the catching gear, the target species and most usual by-catch, the...
Tipo: Text Palavras-chave: Fisheries management; Fishing effort; Technical interactions; English Channel; Metier; Gestion des pêcheries; Distribution de l'effort de pêche; Interactions techniques; Manche; Métiers.
Ano: 1995 URL: http://archimer.ifremer.fr/doc/1995/rapport-3836.pdf
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Catalogue international des activités des flottilles de Manche, approche des interactions techniques ArchiMer
Tetard, A; Boon, M; Bennett, D; Berthou, Patrick; Bossy, S; Casey, J; De Clerck, R; Delpech, Jean-paul; Dintheer, C; Giret, M; Large, P; Latrouite, Daniel; Lemoine, Michel; Millner, R; Morizur, Yvon; Ozanne, S; Palmer, D; Pawson, M; Pickett, G; Vince, M.
This work is the result of collaboration between the English, French, Channel Isles and Belgian laboratories which are involved in a study of the English Channel. Its subject is the activities of fleets and fleet interactions, and it complements other work on the biogeographical identification of Channel fish and shellfish stocks (published), and on modelling the fleets' interactions as they exploit the resources (in preparation). The concept of a métier is defined as being the use of one fishing gear to catch one or several species targeted during a particular season in a given area. On this basis, 74 métiers were identified during 1989-90. For each métier we give a brief description of the catching gear, the target species and most usual by-catch, the...
Tipo: Text Palavras-chave: Fisheries management; Fishing effort; Technical interactions; English Channel; Métier; Gestion des pêcheries; Distribution de l'effort de pêche; Interactions techniques; Manche; Métiers.
Ano: 1993 URL: http://archimer.ifremer.fr/doc/1993/rapport-704.pdf
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Comparaison protocole d'accord Sénégal Union Economique 1994 - 1996 et 1997 - 2001 OceanDocs
Talla, M.D..
Tipo: Preprint Palavras-chave: Bilateral agreements; Fishing vessels; Marine fisheries; Licences; Fishing effort; Marine fisheries; Licences; Fishing vessels; Fishing effort; Http://aims.fao.org/aos/agrovoc/c_4611; Http://aims.fao.org/aos/agrovoc/c_4313; Http://aims.fao.org/aos/agrovoc/c_2954; Http://aims.fao.org/aos/agrovoc/c_24027.
Ano: 2001 URL: http://hdl.handle.net/1834/2889
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Conseil Présidentil sur la Pêche OceanDocs
Tipo: Book Palavras-chave: Artisanal fishing; Coastal fisheries; Fish catch statistics; Fishermen; Fishery management; Fishery development; Fishery oceanography; Fishing effort; Fishery protection; Fishery statistics; Freshwater fish; Marine fisheries; Pelagic fisheries; Aquaculture statistics; Aquaculture; Aquaculture development; Fishermen; Fishery management; Fishery oceanography; Marine fisheries; Aquaculture; Coastal fisheries; Fishing effort; Pelagic fisheries; Http://aims.fao.org/aos/agrovoc/c_2936; Http://aims.fao.org/aos/agrovoc/c_24026; Http://aims.fao.org/aos/agrovoc/c_2938; Http://aims.fao.org/aos/agrovoc/c_4611; Http://aims.fao.org/aos/agrovoc/c_550; Http://aims.fao.org/aos/agrovoc/c_1696; Http://aims.fao.org/aos/agrovoc/c_24027; Http://aims.fao.org/aos/agrovoc/c_5659.
Ano: 2008 URL: http://hdl.handle.net/1834/2892
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Contribution à l'évaluation et à l'évolution de la puissance de pêche des fileyeurs français ArchiMer
Morizur, Yvon; Carn, Nolwenn.
En l'absence de données fines sur l'effort de pêche des fileyeurs, on prend couramment la journée de pêche comme unité d'effort. C'est le niveau disponible pour tous les bateaux. Lorsque l'on prend la journée de pêche comme unité d'effort dans le fileyage, l'on se réfère à une unité de temps qui comporte des opérations de levage et parfois de filage et de levage, et la puissance de pêche dépendra principalement des quantités de filets levés, la durée d'immersion étant un facteur peu variable dans une même pêcherie. Cette étude vise à étudier l'influence de ce facteur sur la puissance de pêche et à étudier le lien avec des paramètres physiques connus. Les analyses effectuées montrent que, pour les années 1996-97, les quantités de filets sont dépendantes de...
Tipo: Text Palavras-chave: Hake; Sole; Anglerfish; Spider crab; Length of nets; Evolution; Fishing power; Fishing effort; Fixed nets; Merlu; Baudroie; Sole; Araignée; Evolution; Puissance de pêche; Longueur des filets; Effort de pêche; Filets fixes.
Ano: 2000 URL: http://archimer.ifremer.fr/doc/2000/rapport-1243.pdf
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Description de la pêcherie démersale céphalopodière en Mauritanie (1990 – 1992) OceanDocs
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
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Description de l'activité des flottilles pélagiques industrielles en 1987 dans la ZEE mauritanienne. OceanDocs
Chavance, P..
En 1987, 59 chalutiers pélagiques (62-102 m, 2000 – 3880 cv) ont opéré dans la ZEE mauritanienne. Trois pays sont représentés : l’URSS, la Roumanie et l’Allemagne de l’Est. Les captures totales atteignent 441473 tonnes dont 66,5% est pêchée par les soviétiques, 26,3% par les roumains et 7,2% par les allemands de l’Est. Les chinchards (<Trachirus sp et Decapterus rhonchus>) prédominent dans les captures avec 50,8%, les sardinelles en représentent 14,9% et la sardine 7,7%. L’activité des flottilles est apparue, comme en 1986, très marquée par les saisons hydrologiques.
Tipo: Journal Contribution Palavras-chave: Chalutiers pélagiques; Flottilles industrielles; Captures; Saisons hydrologiques; Commercial fishing; Environmental impact; Fishing effort; Fishing fleet; Pelagic fisheries; Seasonal distribution; Seasonal variations; Temperature effects; Temporal variations; Trawling; Upwelling; Environmental impact; Trawling; Fishing effort; Pelagic fisheries.
Ano: 1988 URL: http://hdl.handle.net/1834/1147
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Diagnostic des pêcheries du poulpe (Octopus vulgaris) dans les eaux sous juridiction sénégalaise: Rapport définitif OceanDocs
Les seiches, poulpes, calmars et nautiles forment la Classe des Céphalopodes de l’Embranchement des Mollusques de grande taille, exclusivement marins. Leur croissance est rapide, leur arrivée à la maturité sexuelle précoce et leur durée de vie courte. Le poulpe a une très large aire de distribution incluant les eaux maritimes tropicales. Elle abonde surtout en Méditerranée, dans les eaux japonaises (Océan Pacifique) et dans l’Atlantique Centre-Est qui s’étend du Maroc à l’Angola. La pêche du poulpe s’est développée au large du Sahara dans les années 1960. Son importance dans la zone du COPACE notamment, au Maroc, en Mauritanie et au Sénégal, s’expliquerait par la raréfaction de ses prédateurs potentiels (Serranidés, Sparidés). Au Sénégal, elle est...
Tipo: Working Paper Palavras-chave: Cephalopod fisheries; Reproduction; Fishing gear; Fishery industry; Catching methods; Fishing nets; Season regulations; Fishing effort; Fishing rights; Fishery regulations; Living resources; Commercial legislation; Octopus fisheries; Fishery statistics.
Ano: 2009 URL: http://hdl.handle.net/1834/4573
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Diagnostic des pêcheries du poulpe (octopus vulgaris) dans les eaux sous juridiction sénégalaise. Rapport définitif OceanDocs
Les seiches, poulpes, calmars et nautiles forment la Classe des Céphalopodes de l’Embranchement des Mollusques de grande taille, exclusivement marins. Leur croissance est rapide, leur arrivée à la maturité sexuelle précoce et leur durée de vie courte. Le poulpe a une très large aire de distribution incluant les eaux maritimes tropicales. Elle abonde surtout en Méditerranée, dans les eaux japonaises (Océan Pacifique) et dans l’Atlantique Centre-Est qui s’étend du Maroc à l’Angola. La pêche du poulpe s’est développée au large du Sahara dans les années 1960. Son importance dans la zone du COPACE notamment, au Maroc, en Mauritanie et au Sénégal, s’expliquerait par la raréfaction de ses prédateurs potentiels (Serranidés, Sparidés). Au Sénégal, elle est...
Tipo: Other Palavras-chave: Octopus fisheries; Fishery legislation; Trade; Sexual reproduction; Fishing effort; Fishing fleet; Security; Fishing licenses; Habitat (natural); Agreements.
Ano: 2009 URL: http://hdl.handle.net/1834/4577
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Distribución espacial de la pesquería de camarón (Farfantepenaeus notialis) en el Golfo de Ana María, aplicando Sistema de Información Geográfica. OceanDocs
Garcés Rodríguez, Yuliesky; Giménez, Enrique; Alzugaray, Romina.
Se representa la distribución del esfuerzo y rendimiento pesquero en la pesca de camarón durante el periodo de 2003 – 2005 para el Golfo de Ana María aplicando Sistema de Información Geográfica. Las salidas espaciales en los mapas obtenidos permitieron mostrar que la región de mayor esfuerzo pesquero fue la zona de Manuel Gómez, de empresas de Cienfuegos (EPICIEN), y las cuadrículas pertenecientes a la empresa de Santa Cruz del Sur (EPISUR). Los máximos de rendimiento pesquero reflejados espacialmente, pertenecen a la sub-zona Este de Manatí, al noreste de las cuadrículas de EPISUR y las sub-zonas de Manuel Gómez y Palomo. La representación gráfica de los resultados muestra que no existe una correspondencia entre el esfuerzo y la captura por unidad de...
Tipo: Journal Contribution Palavras-chave: Shrimp fisheries; Geographic information systems; Fishing effort.
Ano: 2012 URL: http://hdl.handle.net/1834/4570
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Effect of discards on roundnose grenadier stock assessment in the Northeast Atlantic ArchiMer
Pawlowski, Lionel; Lorance, Pascal.
In the Northeast Atlantic fishery for roundnose grenadier Coryphaenoides rupestris, discards account for about 30% of the catch in weight. Data on discards are scarce; however, length distributions and discard rates appear to be relatively stable from year to year. In contrast, landings data available since 1990 show that the average pre-anal fin length has decreased from 20.7 cm in 1990 to 15.2 cm in 2008, resulting in a 58% reduction of the mean individual weight (850 g in 2008) and an increasing occurrence of overlapping class sizes between landings and discards in recent years. For stock assessment, the method of separable virtual population analysis (SVPA) was used. However, because of the lack of discard data for many of the years covered by the...
Tipo: Text Palavras-chave: Stock assessment; Fishing effort; Discards; Time series; Macrouridae; Coryphaenoides rupestris; Atlantic Ocean.
Ano: 2009 URL: http://archimer.ifremer.fr/doc/00000/11175/7527.pdf
Registros recuperados: 73
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