Consulta: subjectFacets:"Fishing effort"
Registros recuperados: 74
Data/hora: 09/06/2024 10:10:28

Matching Social and Ecological Systems in Complex Ocean Fisheries
Provedor de dados: 7
Autores: Wilson, James A.; University of Maine; Jwilson@maine.edu.
This paper considers ocean fisheries as complex adaptive systems and addresses the question of how human institutions might be best matched to their structure and function. Ocean ecosystems operate at multiple scales, but the management of fisheries tends to be aimed at a single species considered at a single broad scale. The paper argues that this mismatch of ecological and management scale makes it difficult to address the fine-scale aspects of ocean ecosystems, and leads to fishing rights and strategies that tend to erode the underlying structure of populations and the system itself. A successful transition to ecosystem-based management will require institutions better able to economize on the acquisition of feedback about the impact of human...
Tipo: Peer-Reviewed Synthesis
Palavras-chave: Resource governance; Fisheries; Complex adaptive systems; Scale; Fishing effort; Decentralization; Governance institutions; Incentives; Multiscale governance; Fishing rights; Ecosystem management; Ecosystem-based management; Polycentric networks.
Ano: 2006

Linkage between fishers' foraging, market and fish stocks density: Examples from some North Sea fisheries
Provedor de dados: 5
Autores: Marchal, Paul; Poos, Jan-jaap; Quirijns, Floor.
This study has investigated some properties of fishermen's foraging, using Levy flights theory. The case studies examined were a selection of North Sea Dutch and French vessels, for which catch and effort data were collected on a haul-by-haul basis. Foraging behavior could reasonably be represented by a Levy flight process, characterized by an exponentiation factor mu, for both fleets. The properties of fishers' foraging were further investigated for the Dutch fleet using time series analysis. Optimal foraging was found with mu = 1.5, suggesting a slow recovery dynamics of the stocks being harvested. Efficient foraging led to high value per unit effort, while the knowledge of fishing grounds with high stock density is shown to increase foraging efficiency...
Tipo: Text
Palavras-chave: Haul by haul data; Foraging; Fishing effort; Levy flights; Fleet behavior.
Ano: 2007
URL: http://archimer.ifremer.fr/doc/2007/publication-2314.pdf

Improving the definition of fishing effort for important European fleets by accounting for the skipper effect
Provedor de dados: 5
Autores: Marchal, Paul; Andersen, B; Bromley, D; Iriondo, A; Mahevas, Stephanie; Quirijns, F; Rackham, B; Santurtun, M; Tien, N; Ulrich, Clara.
The scope of this paper is to quantify, for a wide selection of European fisheries, fishing tactics and strategies and to evaluate the benefits of adjusting the definition of. fishing effort using these elements. Fishing tactics and strategies were identified by metiers choices and a series of indices. These indices have been derived to reflect shifts in tactics (within a fishing trip) and in strategies (within a year). The Shannon-Wiener spatial diversity indices of fishing tactics (FT_SW) and strategies (YE_SW) had the greatest impact on catch rates. In particular, FT_SW was always negatively correlated to catch rates. One may anticipate that during a fishing trip, vessels with high FT_SW have been searching fish aggregations for a long time, while...
Tipo: Text
Palavras-chave: Fishing effort; Fishing mortality; Catch rates; GLM modeling; Skipper effect.
Ano: 2006
URL: https://archimer.ifremer.fr/doc/2006/publication-1339.pdf

Impact of technological creep on fishing effort and fishing mortality, for a selection of European fleets
Provedor de dados: 5
Autores: Marchal, Paul; Andersen, Bo; Caillart, B.; Eigaard, Ole; Guyader, Olivier; Hovgaard, Holger; Iriondo, Ane; Le Fur, Fanny; Sacchi, Jacques; Santurtun, Marina.
Face-to-face interviews were conducted to identify the main changes in gear and vessel technology that may have improved the fishing efficiency of a number of French, Danish, and Basque fleets over the past few decades. Important changes include the gradual appearance of twin trawls (Danish and French trawlers) and trammel-nets (French gillnetters), and the increased polyvalence of Basque bottom trawlers. The results suggest that fishing effort descriptors that are not traditionally measured (gear type, groundrope type, length of net used per day, headline length, crew size, number of winch or net drums) may have a substantial impact on catch rates. Adjusting fishing effort using such descriptors may generally improve the relationship between fishing...
Tipo: Text
Palavras-chave: Twin trawls; Technological creep; Groundrope; Generalized linear models; Fishing mortality; Fishing effort; Catch rate.
Ano: 2007
URL: http://archimer.ifremer.fr/doc/2007/publication-2611.pdf

Impact d’une obligation de débarquement sur les dynamiques couplées écosystème-pêcheurs : approche par modélisation individu-centrée appliquée à la Manche orientale
Provedor de dados: 5
Autores: Bourdaud, Pierre.
The objective of this thesis was to anticipate the effects if the EU Landing Obligation (LO) implemented since the beginning of 2015 in the Eastern English Channel (EEC). To achieve these objectives, it was planned to: i) better understand seasonal spatial distribution of commercial species using on-board commercial vessels observation data, ii) compare them with the fine scale fishing effort distribution of EEC bottom otter trawlers (OTB), and iii) develop an individual-based model of fleet-dynamics, DSVM, to be integrated within the ecosystem model OSMOSE to simulate a LO. The usefulness of on-board observation data was proved for a main part of a species sample, using validation from the literature and a geostatistical indicator. Then the comparison of...
Tipo: Text
Palavras-chave: Distribution spatiale; Saisonnalité; Données commerciales; Données de campagnes scientifiques; Manche Orientale; Effort de pêche; Assemblages d’espèces cibles; Obligation de débarquement; Modèle individu-centré; Dynamiques des flottilles; Spatial distribution; Seasonality; Commercial data; Survey data; Eastern English Channel; Fishing effort; Target species assemblages; Landing obligation; Individual-based model; Fleet dynamics.
Ano: 2018
URL: http://archimer.ifremer.fr/doc/00440/55135/56603.pdf

Contribution à l'évaluation et à l'évolution de la puissance de pêche des fileyeurs français
Provedor de dados: 5
Autores: 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

Etat de la Peche des Sparides du Golfe du Lion. Application de Deux Modeles de Gestion (Schaefer, 1957; Beverton et Holt, 1957) aux Stocks de Pagellus erythrinus et Boops boops.
Provedor de dados: 5
In the Gulf of Lion, only three species of Sparidae present a true economical interest : The pandora, the bogue and the gilt head bream. They totalize 90% of the catches of this family. The model of Schaefer is inapplicable to the pandora and bogue stocks and the author could not determine an optimal fishing effort for these two species. The important heterogeneity of size and equipment of the trawlers and the notable imprecision of the fishery statistics explain, perhaps, the inadequacies of this logistic model to this fishing. The author has defined the potentialities of the production of the pandora and bogue stock using the analytical model of Beverton and Holt. He verifies that an increase of the yield corresponds to a decrease of the fishing effort....
Tipo: Text
Palavras-chave: Boops boops; Pagellus erythrinus; Boops boops; Fishery statistics; Pagellus erythrinus; Yield; Fishery statistics; Fishing effort; Yield; Stock assessment; Fishing effort; Mathematical models; Stock assessment; Fishery management; Mathematical models.
Ano: 1980
URL: http://archimer.ifremer.fr/doc/1980/publication-1928.pdf

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
Provedor de dados: 5
Autores: 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

Les statistiques de pêche
Provedor de dados: 5
Autores: Delpech, Jean-paul.
The french statistical fishery system is briefly presented and informations are given relative to landings, fishing effort, data network and system actors.
Tipo: Text
Palavras-chave: Fishery statistics; Production; Fishing effort.
Ano: 1998
URL: https://archimer.ifremer.fr/doc/00447/55810/62263.pdf

Optimisation of trawl energy efficiency under fishing effort constraint
Provedor de dados: 5
Autores: Priour, Daniel; Khaled, Ramez.
Trawls energy efficiency is greatly affected by the drag, as well as by the swept area. The drag results in an increase of the energy consumption and the sweeping influences the catch. Methods of optimisation of the trawl design have been developed in order to reduce the volume of carburant per kg of caught fish and consequently the drag per swept area of the trawl. Based on a finite element method model for flexible netting structures, the tool modifies step by step a reference design. For each step the best-modified design, in terms of drag per swept area is kept. Such optimisation can lead to a decrease of the drag or an increase of the swept area. In the second case, that could lead to an increase of fishing effort. To avoid such increase, which could...
Tipo: Text
Palavras-chave: Fishing; Fuel; Fishing gear; Trawl; Optimisation; Fishing effort.
Ano: 2009
URL: http://archimer.ifremer.fr/doc/00170/28151/26381.pdf

Evolution et répartition de la capacité physique et de l'effort de pêche des navires français. Estimation de l'adéquation de la capacité utilisée et des possibilités de pêche
Provedor de dados: 5
Autores: Leonardi, Sophie; Leblond, Emilie; Le Blond, Samuel; Marchal, Paul.
Ce document vise à fournir des informations concernant la situation des différents stocks et la capacité des flottilles françaises et communautaires sur ces stocks. Il met à disposition des données permettant de mesurer :   1. l'évolution de la capacité physique de la flotte française. Celle-ci est abordée à travers la puissance nominale totale (kW), la puissance moyenne (kW) et le nombre de navires. L'évolution de ces indicateurs est fournie depuis 1983 pour la façade Mer du Nord – Manche – Atlantique et la façade Méditerranée, depuis 1997 pour les Départements d'Outre Mer (DOM). Dans un premier temps, l'ensemble des navires français inscrits au fichier flotte sont pris en compte. Dans un second temps, seuls les navires actifs sont retenus en distinguant...
Tipo: Text
Palavras-chave: Capacité des navires; Effort de pêche; Production; Atlantique; Mer du Nord; Méditerranée; Flotte française; Boat capacity; Fishing effort; Production; Atlantic; North sea; Mediterranean sea; French fleet.
Ano: 2009
URL: http://archimer.ifremer.fr/doc/00001/11213/7587.pdf

Utilisation de données concentrées au niveau des criées pour l'évaluation de la production des navires de pêche artisanale côtière
Provedor de dados: 5
Autores: Gondeaux, Evelyne; Durand, Jean-louis; Flores, Domingo.
L'évaluation des quantités débarquées en pêche artisanale a toujours constitué un problème important. L'élaboration d'une base de données fiable améliorerait grandement l'appréhension de ce secteur économique en grande partie informel.  Ce document est une contribution à la mise au point d'une méthode d'estimation des débarquements des navires de petite pêche. L'utilisation de données concentrées au niveau des criées à été privilégiée. Ce choix s'explique par deux raisons. D'une part il est ainsi possible de valoriser une quantité non négligeable des données archivées, et de faire un bilan de l'acquis. D'autre part, la méthode proposée permet de limiter l'utilisation de stratégies d'échantillonnage coûteuses aux fractions de la flottille qui n'utilisent...
Tipo: Text
Palavras-chave: North East Atlantic; Brittanny; Eel; Conger; Bass; Coastal fishing; Fishing effort; Auction sales data; SEM; Mor Braz; Brittany; Congre; Bar; Pêche côtière; Effort pêche.
Ano: 1987
URL: http://archimer.ifremer.fr/doc/1987/rapport-2193.pdf

Can modelling the drift of bycaught dolphin stranded carcasses help identify involved fisheries? An exploratory study
Provedor de dados: 5
Autores: 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

Etude préalable à la gestion des stocks de crustacés en Bretagne
Provedor de dados: 5
Autores: Autissier, Isabelle; Coum, Andrée; Cuillandre, Jean Pierre; Veron, Gerard; Latrouite, Daniel.
At the end of the seventies, as fishing abundance (based on Catch Per Unit Effort) in crabs and lobster fishery steadily declined, operating expenses increased, and fishing boats changed strategy (changing metiers, covering larger distance to fishing areas, fishing seasons being extended, ...) professionals and scientists aimed to consider reinforcing management measures. To enlighten and support potential related decisions, the Comité Régional des Pêches et Cultures Marines de Bretagne (Regional Committee for fishing and farming in Brittany), together with the ISTPM (Ifremer since 1984), conducted a survey on the exploited populations and gave a review of the involved Breton fleet. This report shows the results of a survey conducted among fishermen,...
Tipo: Text
Palavras-chave: Landings; Catch rates; Fishing area; Fishing effort; Fleet; Brittany; Edible crab; Lobster; Spider crab; Apport; Rendement; Zone de pêche; Effort de pêche; Flottille; Bretagne; Tourteau; Homard; Araignée.
Ano: 1981
URL: http://archimer.ifremer.fr/doc/1981/rapport-1548.pdf

Le ceteau Dicologoglossa cunetata (Moreau), sa biologie et sa peche dans le sud du golfe de Gasgogne.
Provedor de dados: 5
Autores: Forest, A.
This study deals with D.cuneata, a small soleid listed among the spp of NEAFC Recommendation 2 and exploited by the 'artisanal' trawlers in the South of the Bay of Biscay. The gonads/gutted fish wt ratio has been calculated throughout a yr, and shows that young Dicologoglossa are able to reproduce at age-group II. Spawning takes place during the 3rd quarter. Growth has been determined by otolith reading and length frequency analysis; Bertalanffy's and Gompertz's equations parameters have been studied, and attempts to estimate the instantaneous rate of total mortality have been made. The results are: male Z 3-5=0.74 and 0.83, female Z 3-5=0.96 and 1.35. Selectivity experiments carried out on board of R/V 'La Palagia' give a selection factor of 3.9. The...
Tipo: Text
Palavras-chave: Microchirus; Dicologoglossa cuneata; Population structure; Gear selectivity; Total mortality; Population characteristics; Fishing effort; Artisanal fishing; Reproductive organs; Growth; Fishery statistics.
Ano: 1975
URL: http://archimer.ifremer.fr/doc/1975/publication-2003.pdf

Environment outweighs the effects of fishing in regulating demersal community structure in an exploited marine ecosystem
Provedor de dados: 5
Autores: Mérillet, Laurene; Kopp, Dorothee; Robert, Marianne; Mouchet, Maud; Pavoine, Sandrine.
Global climate change has already caused bottom temperatures of coastal marine ecosystems to increase worldwide. These ecosystems face many pressures, of which fishing is one of the most important. While consequences of global warming on commercial species are studied extensively, the importance of the increase in bottom temperature and of variation in fishing effort is more rarely considered together in these exploited ecosystems. Using a 17‐year time series from an international bottom‐trawl survey, we investigated co‐variations of an entire demersal ecosystem (101 taxa) with the environment in the Celtic Sea. Our results showed that over the past two decades, biotic communities in the Celtic Sea were likely controlled more by environmental variables...
Tipo: Text
Palavras-chave: Bottom trawl survey; Celtic Sea; Fishing effort; Marine resources; Spatio-temporal dynamics; Stability; STATICO multivariate analysis.
Ano: 2020
URL: https://archimer.ifremer.fr/doc/00599/71150/69470.pdf

Les rendements par espèce de la pêche chalutière hauturière française de l'Atlantique Nord-Est entre 1972 et 1989
Provedor de dados: 5
Autores: Bertignac, Michel.
Multiple correspondance analysis and hierarchical ascending classification were used to study catch rate variations in the French deep-sea trawler fleet between 1972 and 1989. The use of these methods clarifies the sometimes complex relationships between catch rates of the main species landed within the total catch and allows a classification of the typical catch rate structures over this period. Factors such as year and fishing areas are those which best explain the observed variations; seasonal variations play a minor role. Catch rates increased and more species were caught between 1972 and 1989. The study shows the relationship between these developments and changes in fishing effort allocation strategies and in fleet structure. Trawlers which exploited...
Tipo: Text
Palavras-chave: Pêche multi-spécifique; Rendement; Analyse factorielle des correspondances multiples; Effort de pêche; Multispecies fishery; Catch rate; Multiple correspondance analysis; Fishing effort.
Ano: 1992
URL: http://archimer.ifremer.fr/doc/00189/30074/28562.pdf

Identifying fishing trip behaviour and estimating fishing effort from VMS data using Bayesian Hidden Markov Models
Provedor de dados: 5
Autores: Vermard, Youen; Rivot, Etienne; Mahevas, Stephanie; Marchal, Paul; Gascuel, Didier.
Recent advances in technologies have lead to a vast influx of data on movements, based on discrete recorded position of animals or fishing boats, opening new horizons for future analyses. However, most of the potential interest of tracking data depends on the ability to develop suitable modelling strategies to analyze trajectories from discrete recorded positions. A serious modelling challenge is to infer the evolution of the true position and the associated spatio-temporal distribution of behavioural states using discrete, error-prone and incomplete observations. In this paper, a Bayesian Hierarchical Model (HBM) using Hidden Markov Process (HMP) is proposed as a template for analyzing fishing boats trajectories based on data available from...
Tipo: Text
Palavras-chave: Bayesian Hierarchical Models; Hidden Markov Model; State-space model; VMS; Fleet behaviour; Fishing effort.
Ano: 2010
URL: http://archimer.ifremer.fr/doc/00009/11993/9342.pdf

Spatio-temporal trends in diversity of demersal fish assemblages in the Mediterranean
Provedor de dados: 5
Autores: Farriols, M. Teresa; Ordines, Francesc; Carbonara, Pierluigi; Casciaro, Loredana; Di Lorenzo, Manfredi; Esteban, Antonio; Follesa, Cristina; García-ruiz, Cristina; Isajlovic, Igor; Jadaud, Angelique; Ligas, Alessandro; Manfredi, Chiara; Marceta, Bojan; Peristeraki, Panagiota; Vrgoc, Nedo; Massutí, Enric.
The high species richness, coupled with high proportion of endemism, makes the Mediterranean one of the world’s ‘biodiversity hotspots’. However, the continuous increase in fisheries in the last few decades has led to the overexploitation of their main commercial stocks. Using fishery-independent data collected under the framework of the MEDITS trawl surveys carried out over the last 20 years, we study the demersal fish diversity pattern in the Mediterranean at a large spatial and temporal scale to determine whether it is being affected by the general fishing overexploitation of the demersal resources. The detected diversity trends are compared with the spatio-temporal variation in bottom trawl fishing effort in the Mediterranean. Our results show a...
Tipo: Text
Palavras-chave: Biodiversity; Fish assemblages; MEDITS; Bottom trawling; Fishing effort; Mediterranean Sea.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00584/69628/67484.pdf

Techniques de pêche utilisées en Martinique pour l’exploitation des grands poissons pélagiques du large
Provedor de dados: 5
Autores: Flament, Margaux; Monet, Nans; Pau, Cedric; Reynal, Lionel.
In the West Indies, artisanal vessels target pelagic fish off the coast using several fishing gears in the same trip, which complicates their codification based on ICCAT references. This paper describes the fishing techniques used in Martinique in exploiting offshore pelagic species. A distinction is made between two métiers, fishing for large pelagic species on free schools or around driftwood and fishing close to anchored fish aggregating devices. These two métiers can be used in the same trip. Fishers can also suspend their use to catch small offshore pelagic species such as flying fish. Each gear enables a species group to be targeted. However, data collection carried out at landing sites does not allow assignment of catches to each of the gears used...
Tipo: Text
Palavras-chave: Martinique; Pelagic fisheries; Fishing gear; Fishing effort.
Ano: 2017
URL: http://archimer.ifremer.fr/doc/00418/52983/53921.pdf

Caractérisation biologique et variation des captures de la grande alose (Alosa alosa) par unité d'effort sur le fleuve Adour (Pyrénées Atlantiques, France)
Provedor de dados: 5
Autores: 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

Biologie et peche du capitaine Lethrinus enigmaticus (Smith) 1959 du banc de Saya de Malha (Ocean Indien)
Provedor de dados: 5
Autores: 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

Catalogue international des activités des flottilles de Manche, approche des interactions techniques
Provedor de dados: 5
Autores: 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

Catalogue international des activités des flottilles de Manche, approche des interactions techniques
Provedor de dados: 5
Autores: 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

Effect of discards on roundnose grenadier stock assessment in the Northeast Atlantic
Provedor de dados: 5
Autores: 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

Un modèle empirique du recrutement pour le stock de coquilles Saint Jacques, Pecten maximus (L.) en baie de Saint-Brieuc (Manche, France)
Provedor de dados: 5
Autores: Fifas, Spyros; Dao, Jean-claude; Boucher, Jean.
This paper proposes an empirical model for the recruitment of the scallop stock, Pecten maximus (L.), in Saint-Brieuc Bay (English Channel, France). This stock shows important fluctuations in recruitment. The use of traditional models for fish population dynamics based upon an equilibrium state were inadéquate. This model includes three independent variables: spawning biomass, effects of fishing effort on the unexploited year classes, and temperature. Correlations between these expressions of independent parameters and recruitment are systematically analysed. The choice of the final model relies on minimization of the total variance unexplained portion. Introduction of fishing pattern into the model is realized by testing fishing effort effects upon two...
Tipo: Text
Palavras-chave: Recrutement; Modèle empirique; Pecten maximus; Température; Biomasse féconde; Effort de pêche; Recruitment; Empirical model; Pecten maximus; Temperature; Spawning biomass; Fishing effort.
Ano: 1990
URL: http://archimer.ifremer.fr/doc/00189/30069/28557.pdf

Les pêcheries françaises du chalutage à bar : analyse de séries temporelles 1999-2007
Provedor de dados: 5
Autores: Morizur, Yvon; Meunier, M; Huet, Jerome; Martin, S.
A displacement of the fishing effort of the French pelagic trawlers from anchovy to the seabass fisheries is observed. A such situation on a non-quota managed species requires to analyse carefully the evolution in the status of seabass stocks. The evolution of fishing effort, the production and the landings per unit of effort were studied from 2000 to 2007 for the bottom trawling and for the pair pelagic trawling in the ICES sub-areas VIII and VII. The fishing effort was assessed by using a threshold on the landings by month in order to select the most effective fishing effort as representing 75 % of the effort concerned with seabass landings. Length compositions and age-length keys were used to calculate the cpue-at-age series. A total mortality value was...
Tipo: Text
Palavras-chave: Fishing mortality; Recruitment; Abundance index; Fishing effort; Trawling; Seabass; Dicentrarchus labrax; Mortalité par pêche; Recrutement; Indice d'abondance; Effort de pêche; Chalutage; Bar commun; Dicentrarchus labrax.
Ano: 2009
URL: http://archimer.ifremer.fr/doc/2009/rapport-7303.pdf

Situación actual y perspectivas del recurso Macarela (Scomber japonicus) en Ecuador
Provedor de dados: 20
Autores: Santos, M.; González, N.
Los marcados cambios en la disponibilidad de macarela (Scomber japonicus) en aguas ecuatorianas debido a su migración, se relacionan probablemente con las modificaciones en el medio ambiente, que determinan las condiciones óptimas para la alimentación, reproduccion y sobrevivencia larval (French y Men, 1983). En general, las capturas de Macarela presentan una clara estacionalidad con dos periodos de máximos desembarques: enero-marzo y agosto-octubre. Entre los años 1982 y 1991 las capturas alcanzaron un máximo de 590000 t (1982) y un mínimo de 84000 t (1991), con un promedio anual de 262000 t. Las capturas anuales en el período analizado (1982-91) muestra un contínuo descenso, caracterizado por escasos volúmenes obtenidos durante los eventos ”El Niño” (EN)...
Tipo: Journal Contribution
Palavras-chave: Pelagic fisheries; Fishing effort; Fishery resources; Catch/effort; Pelagic fisheries; Fishing effort; Fishery resources.
Ano: 1992
URL: http://hdl.handle.net/1834/5702

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

Características de la red de cerco "tipo lámpara" y algunos comentarios sobre la flota que la utiliza en la pesca de caballa.
Provedor de dados: 20
Autores: 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

Comparaison protocole d'accord Sénégal Union Economique 1994 - 1996 et 1997 - 2001
Provedor de dados: 20
Autores: 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

Aménagement des ressources halieutiques au Sénégal: partenariat et démarche préventive
Provedor de dados: 20
Autores: 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

Áreas potenciales de descarte de merluza para la actividad de la flota comercial argentina
Provedor de dados: 20
Autores: 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

Conseil Présidentil sur la Pêche
Provedor de dados: 20
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

Estandarización del esfuerzo de pesca ejercido sobre el abadejo (Genypterus blacodes) en aguas Argentinas. Período 1986-1996.
Provedor de dados: 20
Autores: Cordo, H.D.
If the fishing effort is properly standardized, the catch per unit of effort may be proportional to biomass (C/f=q x B(med)). A multiplicative factorial model was applied to the ling Genypterus blacodes catch and effort data by the Argentine bottom trawl fleet recorded between 1986 and 1996. The relative fishing power of the fleet strata was estimated and the effort standardized to obtain normalized CPUEs. Provided they were estimated in the same spatial and temporal situation, there were no differences between the normalized CPUE and the nominal CPUE because ling is caught mainly as by-catch in the Argentine hake fishery. A general picture of the spatial and temporal distribution of ling as reflected by the commercial fleet operations was also obtained.
Tipo: Journal Contribution
Palavras-chave: Catch/effort; Fishing effort; Variance analysis; Fishing power; Mathematical models; Fishing power; Fishing effort; Mathematical models; Http://aims.fao.org/aos/agrovoc/c_29792; Http://aims.fao.org/aos/agrovoc/c_24027; Http://aims.fao.org/aos/agrovoc/c_24199.
Ano: 2001
URL: http://hdl.handle.net/1834/1868

Les perspectives du privé dans la gestion des ressources: contribution de GAIPES
Provedor de dados: 20
Autores: Coulibaly, M.
GAIPES
Tipo: Conference Material
Palavras-chave: Resource management; Fishery regulations; Reproduction; Fishing effort; Fishery products; Bilateral agreements; International cooperation; Research; Marketing; Fishing; Fishery products; Marketing; Resource management; Reproduction; Fishing effort; International cooperation; Research; Fishing; Http://aims.fao.org/aos/agrovoc/c_2941; Http://aims.fao.org/aos/agrovoc/c_4620; Http://aims.fao.org/aos/agrovoc/c_6524; Http://aims.fao.org/aos/agrovoc/c_6507; Http://aims.fao.org/aos/agrovoc/c_24027; Http://aims.fao.org/aos/agrovoc/c_16378; Http://aims.fao.org/aos/agrovoc/c_6513; Http://aims.fao.org/aos/agrovoc/c_26950.
Ano: 2004
URL: http://hdl.handle.net/1834/3674

Etude sur le savoir écologique des pêcheurs artisans des petits pélagiques en Afrique du Nord-Ouest
Provedor de dados: 20
Autores: Sall, A.
Agriculture, Nature and Food Quality, Den Haag (Netherlands); Ministerie Van Buitenlandse Zaken,  Brussel (Belgium); Wageningen International,  Wageningen (Netherlands)
Tipo: Report
Palavras-chave: Fisheries; Artisanal fishing; Fishermen; Fishing effort; Canoe fisheries; Coastal zone; Fishery engineering; Protected resources; Pelagic fisheries; Cycles; Sexual reproduction; Multispecies fisheries; Stocks; Ocean currents; Winds; Biomass; Upwelling; Ecosystems; Maritime legislation; Size; Biomass; Ecosystems; Fisheries; Fishermen; Stocks; Ocean currents; Winds; Size; Fishing effort; Pelagic fisheries; Sexual reproduction; Multispecies fisheries; Http://aims.fao.org/aos/agrovoc/c_926; Http://aims.fao.org/aos/agrovoc/c_2482; Http://aims.fao.org/aos/agrovoc/c_2934; Http://aims.fao.org/aos/agrovoc/c_2936; Http://aims.fao.org/aos/agrovoc/c_28772; Http://aims.fao.org/aos/agrovoc/c_12883; Http://aims.fao.org/aos/agrovoc/c_8401; Http://aims.fao.org/aos/agrovoc/c_7093; Http://aims.fao.org/aos/agrovoc/c_24027; Http://aims.fao.org/aos/agrovoc/c_5659; Http://aims.fao.org/aos/agrovoc/c_26876; Http://aims.fao.org/aos/agrovoc/c_4987.
Ano: 2009
URL: http://hdl.handle.net/1834/3671

Analyse des donnees collectees lors des embarquements a bord des senneurs bases aux Seychelles (1986-1991)
Provedor de dados: 20
Autores: 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

La ictiofauna de Bahía San Blas (Provincia de Buenos Aires) y su relación con la dinámica de las pesquerías deportiva y artesanal
Provedor de dados: 20
Autores: Llompart, F.M.
This study analyses the recreational and artisanal fisheries in San Blas Bay and their relationship with the dynamic of the temporal and spatial variability of the coastal fish assemblage. In addition some biological characteristics of two main target species are assessed. San Blas Bay is part of a natural reserve located in the southern part of Buenos Aires province, which has a great value in terms of tourism, ecology and productivity. According to different sampling methodologies used in this thesis 11 species of chondrychthes, 26 species of bony fish, and a hagfish (Class Petromizontida) were recorded, with a predominance of species belonging to Buenos Aires biogeographic province. To evaluate the fish assemblage seasonal pattern, every three months...
Tipo: Theses and Dissertations
Palavras-chave: Artisanal fishing; Sport fishing; Fishery management; Coastal fisheries; Marine fish; Ecological associations; Abundance; Catch/effort; Biogeography; Fishing effort; Mustelus schmitti; Odontesthes argentiniensis; Marine environment.
Ano: 2011
URL: http://hdl.handle.net/1834/4779

Muestreo de desembarque de caballa (Scomber japonicus) en el puerto de Mar del Plata, período noviembre 2003-diciembre 2004 y resultados de la campaña de estimación de la biomasa de diciembre de 2004
Provedor de dados: 20
Autores: Perrotta, R.G.; Garciarena, A.D.; Madirolas, A.; Cabreira, A.
Chub mackerel (Scomber japonicus) landings corresponding to November 2003-January 2004 and November 2004-January 2005 fishing seasons were analyzed at the Mar del Plata port (Argentina, SW Atlantic). Fourty one samples were taken to measure total length exclusively and 4 sub-samples to record individual data (total length, weight, sex, sexual stage, age according to otoliths reading). Total length ranged 20-50 cm (1 and 8 years old). The most abundant sizes, between 32-37 cm, corresponded to ages 3 and 4, respectively. Most of the fish caught were adult (95%) and mature (85%) specimens. Length-weight, length-age relations were calculated and length-growth, weight-growth parameters estimated. The catch per unit of effort, of high variability (0-2,455 kg...
Tipo: Journal Contribution
Palavras-chave: Landing statistics; Biological sampling; Growth; Fishing effort; Echo surveys; Biomass; Growth; Biomass; Fishing effort; Http://aims.fao.org/aos/agrovoc/c_3394; Http://aims.fao.org/aos/agrovoc/c_926; Http://aims.fao.org/aos/agrovoc/c_24027.
Ano: 2009
URL: http://hdl.handle.net/1834/3455

Los desembarques argentinos de merluza (Merluccius hubbsi) entre 1987 y 1997
Provedor de dados: 20
Autores: Irusta, G.; Bezzi, S.I.; Simonazzi, M.A.; Castrucci, R.
The evolution of argentine landings, characteristics of trawl fleets, principal ports, landings per fleet and management unit (north and south of 41°S), areas and fishing seasons are described. Main results show a continuous increase of argentine hake landings as of 1987. Freezers, that operated in the Patagonian zone along the whole year, was the fleet that most contributed to said increase while the ice chilling fleet maintained its level of landings in the period considered. During the second and third quarter of 1996 and 1997, in the north management unit, the fleet fished in the argentine sector of the  Common Fishing Zone and north of 41°S. During 1996, in the south management unit, the main fishing zones for both fleets were northeast of Escondida...
Tipo: Journal Contribution
Palavras-chave: Landing statistics; Fishing effort; Fishing vessels; Trawlers; Gadoid fisheries; Trawlers; Fishing effort; Fishing vessels; Http://aims.fao.org/aos/agrovoc/c_7880; Http://aims.fao.org/aos/agrovoc/c_24027; Http://aims.fao.org/aos/agrovoc/c_2954.
Ano: 2001
URL: http://hdl.handle.net/1834/2592

Estimation of the catch-at-age matrix of yellowfin tuna (Thunnus albacares) fisheries in the Western Indian Ocean.
Provedor de dados: 20
Autores: Nishida, T.
This is a preliminary paper. There are many different types of gears in many different countries in the western Indian Ocean. As it was sometimes difficult to contact persons-in-charge of the fisheries statistics, not all the description of this paper (such as gear categories, classification and etc) could be checked by them.
Tipo: Proceedings Paper
Palavras-chave: Fishing effort; Fishing gear; Catching method.
Ano: 1998
URL: http://hdl.handle.net/1834/54

Diagnostic des pêcheries du poulpe (Octopus vulgaris)  dans les eaux sous juridiction sénégalaise: Rapport définitif
Provedor de dados: 20
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

Updated standardized CPUE of bigeye caught by the Japanese longline fishery in the Indian Ocean.
Provedor de dados: 20
Autores: Okamoto, H.; Miyabe, N.
The catch per unit of effort (CPUE) of bigeye caught by the Japanese longline fishery in the Indian Ocean was standardized up to 1997 using general linear model (GLM) analysis. Standardized CPUE in the tropical area, which was relatively stable, ranged from 6 to 8 fish per 1,000 hooks in 1979-1987 and decreased continuously to about 4 in 1997. In contrast, CPUE in the southern area did not show the stable trend of the tropical areas, especially after 1990. This unstable CPUE pattern in the southern area in recent years seems to be derived mainly from the shift of targeting in longline operations. If the trend derived from analysis for 1952-1976 is included, current CPUE is estimated to be about 33 % of that in 1954.
Tipo: Proceedings Paper
Palavras-chave: Longlining; Catch/effort; Fishing effort; Fishery data.
Ano: 1998
URL: http://hdl.handle.net/1834/56

El recurso Jurel (Trachurus murphyi) en aguas ecuatorianas
Provedor de dados: 20
Autores: Aguilar, F.
El Jurel, especie pelágica de la familia Carangidae, se distribuye en el Pacífico Suroriental principalmente a lo largo de las costas de Perú y Chile entre los 01~'35'N a 55~'S (Chirichigno et al., 1982). Durante el período de 1984-1990 las capturas fueron ocasionales, de poca importancia, reportadas generalmente entre los meses de septiembre-octubre y obtenidas en el extremo sur del Golfo de Guayaquil. En 1991, los resultados del sistema de monitoreo de los puertos pesqueros industriales reportó pequeñas capturas del recurso en enero, las que volvieron a ocurrir a partir del mes de mayo, pero en niveles muy superiores. En 1991 las capturas de Jurel estuvieron comprendidas entre las 64943,8 (mayo) y 74,9 T (diciembre). Durante los meses de mayo, julio y...
Tipo: Journal Contribution
Palavras-chave: Biological data; Pelagic fisheries; Fishing effort; Fishery resources; Pelagic fisheries; Fishing effort; Fishery resources; Http://aims.fao.org/aos/agrovoc/c_5659; Http://aims.fao.org/aos/agrovoc/c_24027; Http://aims.fao.org/aos/agrovoc/c_2942.
Ano: 1993
URL: http://hdl.handle.net/1834/3073

Estado do conhecimento sobre a pescaria de camarão do Banco de Sofala (Moçambique) em 2011
Provedor de dados: 20
Autores: Palha de Sousa, L.; Abdala, S.; Brito, A.
O camarão de superfície do Banco de Sofala representa uma importante fonte de divisas para Moçambique. O estado de conhecimento sobre a pescaria encontra-se distribuído por fontes bibliográficas diversas incluindo principalmente relatórios internos. Este trabalho tem como principal objectivo compilar todos os dados e informação sobre a pescaria e o stock de camarão de superfície no Banco de Sofala desde o início da sua exploração comercial até ao presente momento. Nele se inclui uma breve descrição da pescaria, a evolução do esforço de pesca, capturas e os respectivos rendimentos da pescaria. É feita referência à história das diferentes medidas de gestão adoptadas sobre o licenciamento, a malhagem mínima, vedas e Total Admissível de Captura (TAC). É...
Tipo: Journal Contribution
Palavras-chave: Shrimp fisheries; Fishing effort; Stock assessment.
Ano: 2011
URL: http://hdl.handle.net/1834/5139

Distribución espacial de la pesquería de camarón (Farfantepenaeus notialis) en el Golfo de Ana María, aplicando Sistema de Información Geográfica.
Provedor de dados: 20
Autores: 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

Evolution des captures et de l'effort de pêche des flottilles industrielles de petits pélagiques dans la zone économique exclusive mauritanienne (1991-1999)
Provedor de dados: 20
Autores: Ould Taleb Ould Sidi, M.M.
Cette étude montre que les captures des espèces de petits pélagiques dans la Zone Economique Exclusive Mauritanienne de 1991 à 1999 fluctuent et se diversifient sous l'effet de la variation des abondances, des changements de stratégie et de l'arrivée de nouvelles flottilles dans la zone. Les captures des sardinelles sont multipliées par 3 suite à l'arrivée des flottilles de l'Union Européenne et au report sur ces deux espèces d'une partie de l'effort de pêche traditionnellement exercé sur les chinchards. Les captures de l'anchois ont connu une augmentation encore plus remarquable suite à l'entrée de la flottille de Saint Vincent et Grenadine et au report d'une partie de l'effort exercé auparavant sur d'autres espèces. Le sabre a en revanche presque...
Tipo: Journal Contribution
Palavras-chave: Fishing effort; Flottilles industrielles; Small pelagic species; Zone Economique Exclusive Mauritanienne; Capture; Catches; Espèces de petits pélagiques; Effort de pêche; Fishery industry; Pelagic fisheries; Fishing fleet.
Ano: 2001
URL: http://hdl.handle.net/1834/210

Cadre de processus:
Provedor de dados: 20
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

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

Las capturas del calamar Illex argentinus en el Uruguay
Provedor de dados: 20
Autores: Leta, H.R.
Los calamares dada su particular abundancia son 105 moluscos marinos de mayor importancia de las aguas uruguayas. Entre éstos, el calamar Illex argentinus es el recurso más importante del área. Si bien la tecnología de captura aplicada no es específica para el recurso, los volúmenes capturados con red de arrastre principalmente para merluza, por las unidades de la Flota Comercial de Altura Uruguaya, indican la existencia de una importante biomasa de estos cefalópodos. Estas consideraciones sumadas al fácil acceso a la zona de explotación y a la duración de la temporada de pesca, favorecen el establecimiento de una pesquería propia del recurso. En 1980, el programa de investigaciones de INAPE incluyó el estudio integral de la explotación de los calamares...
Tipo: Report
Palavras-chave: Fishing gear; Fishing vessels; Experimental fishing; Commercial fishing; Fishing effort; Catch statistics; Fishing gear; Fishing vessels; Fishing effort; Http://aims.fao.org/aos/agrovoc/c_2946; Http://aims.fao.org/aos/agrovoc/c_2954; Http://aims.fao.org/aos/agrovoc/c_24027.
Ano: 1981
URL: http://hdl.handle.net/1834/2564

Etude diagnostic de la pêcherie de mulets sur la grande côte du Sénégal
Provedor de dados: 20
Tipo: Book
Palavras-chave: Mullet fisheries; Reproduction; Growth; Migrations; Ecology; Stocks; Landing statistics; Inland fisheries; Fishing gear; Exploitation; Canoe fisheries; Marketing; Artisanal fishing; Fishing licenses; Mesh regulations; Protected areas; Reef fisheries; Fishing effort.
Ano: 2009
URL: http://hdl.handle.net/1834/4578

Situación actual y perspectivas del recurso Pinchagua (Opisthonema spp.) en Ecuador
Provedor de dados: 20
Autores: Santos, M.; Fuentes, E.
A partir de 1990 y debido a la drástica reducción en la abundacia de los recursos Sardina (Sardinops sagax) y Macarela (Scomber japonicus) las embarcaciones de la clase 3 también dirigieron su esfuerzo hacia la captura de Pinchagua. Los patrones de las capturas mensuales de los últimos diez años presentan una cierta estacionalidad con mayores capturas entre mayo y agosto. Las tendencias de las capturas anuales entre 1982-1991 han mantenido un comportamiento irregular influenciado por eventos cálidos EL Niño (EN) y un pulso de abundacias y de altas capturas. Durante el periodo analizado (1982-1991) la captura promedio fue de 186562 t. Las máximas capturas se registraron entre 1985 y 1986 y fueron superiores a las 325000 t/año; un brusco descenso ocurrió en...
Tipo: Journal Contribution
Palavras-chave: Pelagic fisheries; Fishing effort; Catch/effort; Biological data; Fishery resources; Fishery resources; Pelagic fisheries; Fishing effort; Http://aims.fao.org/aos/agrovoc/c_2942; Http://aims.fao.org/aos/agrovoc/c_5659; Http://aims.fao.org/aos/agrovoc/c_24027.
Ano: 1992
URL: http://hdl.handle.net/1834/3049

Nianing: un modèle de cogestion made in Sénégal ?
Provedor de dados: 20
Autores: Mbengue, Y.
Le village des pêcheurs de Nianing abrite depuis juin 2004 un projet original de gestion des ressources halieutiques. L'expérience appuyée par la coopération japonaise est soutenue par l'Administration des Pêches se veut une initiative locale de cogestion des pêcheries artisanales.
Tipo: Journal Contribution
Palavras-chave: Artisanal fishing; Experimental fishing; Fishermen; Fishery management; Fishery regulations; Fishing effort; Fishermen; Fishery management; Fishing effort; Http://aims.fao.org/aos/agrovoc/c_2936; Http://aims.fao.org/aos/agrovoc/c_24026; Http://aims.fao.org/aos/agrovoc/c_24027.
Ano: 2005
URL: http://hdl.handle.net/1834/2490

Projet d'aménagement des stocks pélagiques partagés : Cas des pêcheries de mulets et de courbines en Mauritanie et au Sénégal
Provedor de dados: 20
En Afrique de l'Ouest, la zone littorale et ses ressources représentent une composante essentielle pour le développement. Près de 60% de la population est concentrée à moins de 20 km des côtes . La part des ressources halieutiques dans l'alimentation des populations est très importante et croissante. Au Sénégal par exemple, elles contribuent jusqu'à 70% des apports en protéines. A cela s'ajoute le poids socio-économique très important de la pêche en général et de la pêche artisanale en particulier devenue l'un des secteurs les plus stratégiques pour l'économie nationale en Mauritanie notamment. Le Cadre Stratégique de Lutte contre la Pauvreté du Gouvernement Mauritanien considère que : "compte tenu des possibilités qu'elle offre en terme de création...
Tipo: Report
Palavras-chave: Artisanal fishing; Fisheries; Fishermen; Stocks; Capture fishery economics; Fish eggs; Fish fillets; Fishing effort; Fishery technology; Mullet fisheries; Pelagic fisheries; Ecosystems; Fisheries; Fishermen; Stocks; Fish fillets; Ecosystems; Fishing effort; Pelagic fisheries; Http://aims.fao.org/aos/agrovoc/c_2934; Http://aims.fao.org/aos/agrovoc/c_2936; Http://aims.fao.org/aos/agrovoc/c_28772; Http://aims.fao.org/aos/agrovoc/c_29019; Http://aims.fao.org/aos/agrovoc/c_2482; Http://aims.fao.org/aos/agrovoc/c_24027; Http://aims.fao.org/aos/agrovoc/c_5659.
Ano: 2002
URL: http://hdl.handle.net/1834/4090

El proceso de pesca en la explotación de la vieira patagónica (Zygochlamys patagonica) y las respuestas espacio-temporales de las poblaciones
Provedor de dados: 20
Autores: Bogazzi, E.
Several attributes of populations of sedentary organisms differentiate benthic fisheries from those approached by the classic theory, inspired by fin-fisheries. The assessment and management of sedentary resources require the application of non-conventional methodological tools. Understanding the fishing process, in particular, is central to the analysis and management of those fisheries. The purpose of this thesis was to investigate the fishing process and its impact on stocks of the Patagonian scallop (Zygochlamys patagonica) fishery. Data and information utilized included: (i) historical data from commercial vessels and experimental fishing; (ii) positional, catch and effort data, and additional information corresponding to fleet activity between 1995...
Tipo: Theses and Dissertations
Palavras-chave: Scallop fisheries; Stock assessment; Fishing vessels; Catch/effort; Fishing effort; Fishing grounds; Oceanic fronts; Stock assessment; Fishing vessels; Fishing effort; Fishing grounds; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_2954; Http://aims.fao.org/aos/agrovoc/c_24027; Http://aims.fao.org/aos/agrovoc/c_2947.
Ano: 2008
URL: http://hdl.handle.net/1834/2996

La pesquería de especies pelágicas en Ecuador
Provedor de dados: 20
Autores: Aguilar, F.
Entre las principales especies pelágicas costeras que tradicionalmente han sido capturadas por la flota cerquera del Ecuador están: Sardina del sur (Sardinops sagax), Macarela o Morenillo (Scomber japonicus), Pinchagua (Opisthonema spp.), Chuhueco (Cetengraulis mistycetus), Sardina redonda (Etrumeus teres). Las embarcaciones utilizadas son del tipo Purse Seiner. Este artículo muestra un análisis de la tendencia de las capturas obtenidas entre 1982 y 1991, lo que permite apreciar con claridad que posterior al máximo obtenido en 1985, las capturas descendieron significativamente como consecuencia en la reducción en la abundancia de Sardina y Macarela, lo que se explica por los efectos negativos de un intenso esfuerzo pesquero y de condiciones oceanográficas...
Tipo: Journal Contribution
Palavras-chave: Pelagic fisheries; Fishing effort; Catch/effort; Pelagic fisheries; Fishing effort; Http://aims.fao.org/aos/agrovoc/c_5659; Http://aims.fao.org/aos/agrovoc/c_24027.
Ano: 1992
URL: http://hdl.handle.net/1834/3047

Seychelles schooner fishery: an analysis of data collected during the period January 1985 to July 1990
Provedor de dados: 20
Autores: Mees, C. C.
Schooners are the largest category of vessel participating in the local fishery. They are fully decked fishing boats equipped with inboard engines and fish with handlines or electric fishing reels. They account for about 15% of the total artisanal catch, but commercially valuable demersal species predominate. Their economic importance is thus greater than the catch volumes would indicate. Furthermore, they have the greatest range and are able to undertake longer fishing trips than other local vessels. They, or a similar class of vessel, are thus considered vitally important for the future development of the local fishery, where the potential for expansion from demersal species is considered to be offshore on the more distant banks and island groups. The...
Tipo: Report
Palavras-chave: Artisanal fishing; Fishery statistics; Catch/effort; Fishing effort; Fishing gear.
Ano: 1990
URL: http://hdl.handle.net/1834/5128

Situación actual y perspectivas del recurso Sardina (Sardinops sagax) en el Ecuador
Provedor de dados: 20
Autores: González, N.; Santos, M.
Las principales áreas de capturas de Sardina (Sardinops sagax) durante el periodo analizado (1982-1991) estuvieron limitadas al Golfo de Guayaquil entre las 20-70 millas frente a la costa. Las máximas capturas de esta especie se efectúan en los meses de enero-abril (periodo principal) y agosto-octubre. Entre los años 1982-1991, las capturas anuales alcanzaron un máximo de 1,2 millones de toneladas (1985) y un mínimo de 6000 t (1991), el desembarque promedio de la serie analizada fue de 370000 t. Es necesario indicar que después del evento cálido de ”El Niño” (EN) de 1982-1983 la Sardina pasó a constituir la principal especie dentro de las capturas totales efectuadas por la flota cerquera, manteniendo esta tendencia hasta 1989. En general, a partir de 1986,...
Tipo: Journal Contribution
Palavras-chave: Biological data; Pelagic fisheries; Fishing effort; Fishery resources; Pelagic fisheries; Fishing effort; Fishery resources; Http://aims.fao.org/aos/agrovoc/c_5659; Http://aims.fao.org/aos/agrovoc/c_24027; Http://aims.fao.org/aos/agrovoc/c_2942.
Ano: 1993
URL: http://hdl.handle.net/1834/3069

Description de l'activité des flottilles pélagiques industrielles en 1987 dans la ZEE mauritanienne.
Provedor de dados: 20
Autores: 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 (&lt;Trachirus sp et Decapterus rhonchus&gt;) 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

Rapport de la septième rencontre de travail IMROP/IEO pour l’étude des pêcheries de crustacés
Provedor de dados: 20
Autores: IEO; IMROP.
Cette rencontre entre dans le cadre du programme conjoint de recherche sur les crustacés entre l’IMROP et l’IEO  (Espagne)
Tipo: Report
Palavras-chave: Captures; Effort de pêche; Lengh distribution; Fishing effort; CPUE; Débarquement; Landing; Pêcheries; Mauritanie; Fisheries; Accords de pêche; UE; Mauritania; Crevettes; Shrimps; EU; Distribution de taille; Fishing fleets; Fishing agreements; Flottille de pêche; Catches; Crustacean fisheries.
Ano: 2002
URL: http://hdl.handle.net/1834/678

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

Diagnostic des pêcheries du poulpe (octopus vulgaris) dans les eaux sous juridiction sénégalaise. Rapport définitif
Provedor de dados: 20
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

Le Girmac: un dispositif cohérent pour l'émergence d'initatives locales de cogestion des pêcheries artisanales
Provedor de dados: 20
Autores: Diagne, M.
Cet article qui cherche à démontrer la cohérence du dispositif de cogestion du Girmac est composé de deux (2) parties. Il montre d'abord que ce dispositif est cohérent parce qu'il a avant tout pour socle, une méthodologie conceptuelle clairement établie. Il montre ensuite sue l'autre facette de taille de ce dispositif est incarnée par la symbiose qui existe entre les différents acteurs impliqués; ce qui a valu à ces derniers, sur la bse d'une synergie des interventions et d'une complémentarité d'actions, de bien se déployer sur le terrains, pour permettre aux communautés de pêcheurs des quatre (4) sites pilotes du Programme (Ouakam, Ngaparou, Foundiougne, Bétenti), d'identifier leurs premières initiatives locales de cogestion et de présenter leurs premiers...
Tipo: Journal Contribution
Palavras-chave: Fishing grounds; Fishing effort; Fishing grounds; Fishing effort; Http://aims.fao.org/aos/agrovoc/c_2947; Http://aims.fao.org/aos/agrovoc/c_24027.
Ano: 2006
URL: http://hdl.handle.net/1834/2447

Pesca comercial y captura por unidad de esfuerzo de la merluza (Merluccius hubbsi) entre 34º S-41º S durante el período 1986-2005 y evidencias sobre cambios en la distribución y composición por tallas del recurso
Provedor de dados: 20
Autores: Irusta, G.; Castrucci, R.; Simonazzi, M.
The activity of the hake (Merluccius hubbsi) commercial offshore ice chilling fleet and its relation to concentration, distribution and population areas of the stock distributed between 34ºS - 41ºS is described. The catch per unit of effort (CPUE) for the 1986-2005 period was estimated applying the General Linear Model. Data derived from the offshore fishing logs provided by the Argentine Secretary of Agriculture, Farming, Fishing and Food Administration and the information obtained in research cruises carried out in 1994, 1996-2001, 2003-2005 to evaluate the resource population abundance. During the main fishing time in the sector (quarter 2) and up until 1991 the fleet scattered within the Argentine-Uruguayan Common Fishing Zone (SW Atlantic). Later on...
Tipo: Journal Contribution
Palavras-chave: Catch/effort; Commercial fishing; Catch statistics; Fishing effort; Size distribution; Exclusive economic zone; Gadoid fisheries; Marine environment; Marine environment; Fishing effort; Http://aims.fao.org/aos/agrovoc/c_4610; Http://aims.fao.org/aos/agrovoc/c_24027.
Ano: 2009
URL: http://hdl.handle.net/1834/3462

Identification et définition des termes nécessaires à la révision de la convention sur les conditions minimales d'accés des pays de la CSRP
Provedor de dados: 20
Autores: Talla, M.D.
Commissions Sous Régionale des Pêches, Dakar (Sénégal) IUCN, Dakar (Sénégal)
Tipo: Book
Palavras-chave: Fishery resources; Resource surveys; Artisanal fishing; Fishery management; Fishery regulations; Fishery statistics; Fishing effort; Fishing vessels; Fish inspection; Quality control; Stocks; Fishery management; Stocks; Fishery resources; Fishing effort; Fishing vessels; Fish inspection; Http://aims.fao.org/aos/agrovoc/c_24026; Http://aims.fao.org/aos/agrovoc/c_28772; Http://aims.fao.org/aos/agrovoc/c_2942; Http://aims.fao.org/aos/agrovoc/c_24027; Http://aims.fao.org/aos/agrovoc/c_2954; Http://aims.fao.org/aos/agrovoc/c_10877.
Ano: 2008
URL: http://hdl.handle.net/1834/2894

Etat des lieux de l'expérience asiatique
Provedor de dados: 20
Autores: Bakhayokho, M.
Dans le cadre du Programme Girmac, une mission sénégalaise a silloné du 1er au 30 septembre 2005 trois pays de l'Asie du Sud-Est (Japon, Thaïlande et Philippines) pour s'imprégner de leurs expériences en matière de co-gestion des pêcheires artisanales. Il ressort au total que chaque pays a sa vision et sa pratique de la co-gestion des pêcheries, celle-ci étant un processus dynamique qui doit être adapté à la culture des communuatés qui se proposent de l'adopter
Tipo: Journal Contribution
Palavras-chave: Fishing grounds; Artisanal fishing; Fishing effort; Fishery protection; Fishing grounds; Fishing effort; Http://aims.fao.org/aos/agrovoc/c_2947; Http://aims.fao.org/aos/agrovoc/c_24027.
Ano: 2005
URL: http://hdl.handle.net/1834/2455

Situación actual y perspectivas del recurso Chuhueco (Cetengraulis mysticetus) en Ecuador
Provedor de dados: 20
Autores: Aguilar, F.
Dentro de las especies pelágicas costeras que son capturadas por la flota cerquera se encuentra el Cetengraulis mysticetus (Chuhueco). Ansaldo (1980) indica que las mayores concentraciones de cardúmenes se ubican en las zonas Sur y Norte del Golfo de Guayaquil, zona Manta-Bahía de Caráquez y Esmeralda. Según los reportes de los desembarques las principales áreas de captura corresponden al Golfo de Guayaquil, frente a la isla Puná y alrededor de la isla Santa Clara. Entre los años 1982 y 1991, las capturas totales anuales presentaron una amplia variabilidad, con un mínimo de 2832 toneladas métricas en 1982 y un máximo de 143062 en 1991. La captura promedio anual en el período 1982-1991 fue de 63981 t, y durante el primer semestre de 1992 alcanzaron las...
Tipo: Journal Contribution
Palavras-chave: Fishing effort; Pelagic fisheries; Biological data; Fishing effort; Pelagic fisheries; Http://aims.fao.org/aos/agrovoc/c_24027; Http://aims.fao.org/aos/agrovoc/c_5659.
Ano: 1993
URL: http://hdl.handle.net/1834/3082

Standardization of catch per unit of effort for swordfish and billfishes caught by the Japanese longline fishery in the Indian Ocean.
Provedor de dados: 20
Autores: Uozumi, Y.
In the present analysis, CPUEs of swordfish and billfishes are standardized with fine-scale statistics to eliminate some possible biases in the CPUE trend which may be introduced by the factors mentioned above.
Tipo: Proceedings Paper
Palavras-chave: Catch/effort; Longlining; Catching method; Fishing effort.
Ano: 1998
URL: http://hdl.handle.net/1834/57

Quelles stratégies de suivi, contrôle et surveillance des ressources halieutiques en cogestion locale ? Etude de cas: la surveillance participative au niveau des sites pilotes du programme GIRMaC
Provedor de dados: 20
Autores: Diarra, Bassirou.
La pêche au Sénégal joue un rôle économique et social très important par une contribution globale de près de 11% du PIB primaire et 2,3% du PIB total. Elle occupe de façon directe et indirecte environ 600 000 personnes, soit près de 17% de la population active selon la DP M. Cependant ces dernières décennies, les études ont montré que le secteur traverse une crise aiguë se traduisant par une raréfaction croissante des ressources, notamment les espèces nobles qui ont une forte valeur commerciale. Cette crise est due entre autres à une surexploitation de ces ressources qui est le résultat d’un manque de maîtrise de l’effort de pêche surtout pour les pêcheries artisanales (80% des débarquements et plus de 60% des approvisionnements des industries de la place)...
Tipo: Theses and Dissertations
Palavras-chave: Ocean surveillance; Ecosystem management; Fishing effort; Overexploitation; Biodiversity; Artisanal fishing; Fisheries.
Ano: 2006
URL: http://hdl.handle.net/1834/5003

La pêche industrielle des espèces pélagiques côtières en Mauritanie de 1979 à 1985 - Deuxième partie : la Pêche au chalut pélagique
Provedor de dados: 20
Autores: Josse, E.
Après la mise en place de la ZEE à 200 miles en 1978, la pêche au chalut pélagique s’est développée très rapidement en Mauritanie. Avec un effort de pêche pratiquement multiplié par 10 entre 1979 et 1983. De 1979 à 1986, sept pays ont participé plus ou moins régulièrement à l’exploitation des ressources pélagiques côtières de la ZEE mauritanienne, avec des chalutiers pélagiques de gros tonnage. Trois pays : l’Allemagne de l’Est, la Roumanie et l’URSS ont réalisé, selon les années, entre les ¾ et la totalité de l’effort total, et de 80 à 100% des captures totales. Les captures totales ont été maximales en 1983, avec 470 000 tonnes. Après une baisse en 1984 elles se sont stabilisées en 1985 et 1986 entre 450 000 et 460 000 tonnes. La composition spécifique...
Tipo: Journal Contribution
Palavras-chave: Catch composition; Catch/effort; Coastal fisheries; Commercial fishing; Commercial species; Fishing effort; Fishing fleet; Fishing gear; Pelagic fisheries; Stock assessment; Trawling; Stock assessment; Trawling; Catch composition; Fishing effort; Fishing gear; Pelagic fisheries; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_7881; Http://aims.fao.org/aos/agrovoc/c_1384; Http://aims.fao.org/aos/agrovoc/c_24027; Http://aims.fao.org/aos/agrovoc/c_2946; Http://aims.fao.org/aos/agrovoc/c_5659.
Ano: 1988
URL: http://hdl.handle.net/1834/1171

On the standardization of the fishing effort
Provedor de dados: 36
Autores: LIMA,Álvaro Carvalho de; FREITAS,Carlos Edwar de Carvalho; ABUABARA,Maria Aparecida Pion; PETRERE Jr,Miguel; BATISTA,Vandick da Silva.
In this note we demonstrate that the use of an index to standardize the fishing effort using the cpue of a standard vessel or gear is mistaken, once the cpues- catch per unit of total effort after standardization is similar to cpues - catch per unit of effort of the standard vesel or gear arbitrarily chosen.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fishing effort; Standardization.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672000000100167

Jatuarana fishing dynamics Brycon amazonicus (Spix &amp; Agassiz, 1829) of the upper and middle Madeira River Basin
Provedor de dados: 3
Autores: Ayala, Daiana Mendes; Lima, Maria Alice Leite; Hauser, Marília; Doria, Carolina Rodrigues da Costa.
 The jatuarana (Brycon amazonicus), is an important species for the Madeira River commercial fisheries. The paper aims to characterize the jatuarana fishing dynamics in the middle Madeira River and test whether there are differences dowstreams and upstreams the Teotônio waterfall. Commercial fisheries landings were monitored daily at 15 ports or riverine communities along that stretch, using semi-structured interviews with fishermen. With data from the fishing monitoring program of UHEs Santo Antônio and Jirau we analysed: the yield, catch per unit effort (CPUE), length structure, locations and fishing gear used, between 2009 to 2011.The fishing yield of this species was temporaly analyzed with data from the Fishermen Colony of Porto Velho city (Rondônia...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pesca fishery production; Fishing gear; Fishing effort; Amazon. Recursos Pesqueiro.
Ano: 2018
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/34591