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Large spatial scale variation of demersal fish assemblage structure on the continental shelf of the NW Mediterranean Sea ArchiMer
Gaertner, J; Bertrand, Jacques; De Sola, L; Durbec, J; Ferrandis, E; Souplet, Arnauld.
The spatial structure of demersal fish assemblages on the continental shelf of the NW Mediterranean Sea was examined on a large scale between the Straits of Gibraltar and the Gulf of Lions. In contrast to its predominant role in the spatial distribution of species composition, described worldwide, it seems depth has only a limited effect on the distribution patterns of the total abundance and diversity of demersal fishes. In addition, evidence is provided for the division of the whole study area into 3 geographical fish assemblages. The influence of Atlantic inputs and the semi-permanent Almena-Oran hydrographic front play a key role in defining the Alboran Sea as a specific fish fauna area. Moreover, the clear differentiation between 2 distinct...
Tipo: Text Palavras-chave: Mediterranean Sea; Management units; Species diversity; Assemblage structure; Demersal fishes.
Ano: 2005 URL: http://archimer.ifremer.fr/doc/2005/publication-3623.pdf
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Use of MEDITS trawl survey data and commercial fleet information for the assessment of some Mediterranean demersal resources ArchiMer
Abella, Alvaro; Belluscio, Andrea; Bertrand, Jacques; Carbonara, Pier Luigi; Giordano, Daniela; Sbrana, Mario; Zamboni, Ada.
An assessment of the state of the fisheries of hake, red mullet and Norway lobster was carried out by using trawl survey data from the MEDITS research programme. The assessment was performed by means of the application of a composite model utilising the total mortality rate Z as a direct index of fishing effort. The studied area covered the whole western Italian coast (Ligurian and Tyrrhenian seas) and the eastern coasts of Corsica. The area was divided into twelve sub-areas, considered to be of similar ecological characteristics with similar initial productivity but considered to experience different rates of exploitation. Available information on fishing fleets and their geographic distribution was used in creating sub-areas. For each one of these...
Tipo: Text Palavras-chave: Modèles composites; Estimation des stocks; Merluccius merluccius; Mullus barbatus; Nephrops norvegicus; Méditerranée; Composite models; Stock assessment; Merluccius merluccius; Mullus barbatus; Nephrops norvegicus; Mediterranean sea.
Ano: 1999 URL: http://archimer.ifremer.fr/doc/00188/29876/28360.pdf
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Projet pilote du Système d’Informations Halieutiques (SIH) Martinique (2007-2010). Premières données sur la pêche en Martinique (2009-2010) ArchiMer
Reynal, Lionel; Demaneche, Sebastien; Guyader, Olivier; Bertrand, Jacques; Berthou, Patrick; Dromer, Clement; Maros, Emmanuel; Bruneau, Marie; Bellanger, Manuel; Merrien, Claude; Guegan, Fabrice; Lespagnol, Patrick; Pitel-roudaut, Mathilde; Jezequel, Michele; Leblond, Emilie; Daures, Fabienne.
Le statut de département français fait de l’île de la Martinique une des régions ultra périphériques (RUP) de l’Union européenne. L’activité des navires de pêche qui exploitent sa ZEE s’inscrit dans le cadre de la politique commune des pêches de l’Union européenne, et la gestion des ressources partagées avec d’autres pays s’exerce dans le cadre des organisations internationales de pêche afférentes. Avec 1098 navires de pêche dont 1074 de moins de 10 mètres, la flotte de la Martinique représentait en 2009 16% de la flotte française. L’absence de données halieutiques depuis les évaluations de Gobert en 1989 a été identifiée à de nombreuses reprises comme un élément critique pour le suivi de l’évolution des activités de pêche et des ressources exploitées,...
Tipo: Text Palavras-chave: SIH; Système d’informations halieutiques; Pêche; Martinique.
Ano: 2013 URL: http://archimer.ifremer.fr/doc/00156/26762/24850.pdf
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Étude halieutique de surveillance de site Flamanville (Manche). Surveillance de la pêche cotière des crustacés - Pêche aux casiers. Rapport pour 1980 ArchiMer
Bertrand, Jacques.
L'étude de Projet des ressources halieutiques du site de la centrale thermonucléaire de Flamanville amis en évidence l'intérêt de la pêcherie de homard du nord-ouest Cotentin pour la flottille de petites unités travaillant au casier dans ce secteur. En accord avec l'Institut des Pêches maritimes, l'Electricité de France a décidé de poursuivre les observations sur cette pêcherie durant une période plus longue que celle à laquelle elle était tenue par les textes réglementaires.
Tipo: Text
Ano: 1981 URL: http://archimer.ifremer.fr/doc/00046/15720/13122.pdf
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Etude halieutique de surveillance de site Flamanville (Manche) - Surveillance de la pêche cotière des crustacés - Rapport pour 1981 ArchiMer
Bertrand, Jacques.
L'étude de Projet relative aux ressources halieutiques du site de la centrale thermonucléaire de Flamanville a mis en évidence l'intérêt de la pêcherie de homard du nord-ouest Cotentin pour la flottille de petites unités travaillant au casier dans ce secteur. En accord avec l'Institut des Pêches maritimes, l'Electricité de France a décidé de poursuivre les observations sur cette pêcherie durant une période plus longue que celle à laquelle elle était tenue par les textes règlementaires.
Tipo: Text
Ano: 1983 URL: http://archimer.ifremer.fr/doc/00045/15633/13036.pdf
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Programme pilote de gestion halieutique : groupe de propositions sur l'organisation de la gestion des pêches dans le golfe du Lion ArchiMer
Bertrand, Jacques; Catanzano, Joseph; Caboche, C; Rey, Hélène; Tempier, E.
Le début de la décennie 1990 a été marqué par la volonté des responsables nationaux et communautaires de faire évoluer les modalités de la gestion des pêches en Méditerranée. L'objectif du présent projet était de contribuer à cette dynamique par une analyse sur le fonctionnement de la pêche à partir de l'exploitation elle-même, à l'échelle de la zone du golfe du Lion. Le projet visait également à proposer, toujours à l'échelle de la zone étudiée, des voies d'évolution en vue d'un renforcement de la participation des professionnels à la gestion des pêches régionales dans le contexte communautaire. Le programme a été réalisé dans le cadre d'une collaboration entre une organisation professionnelle (le Comité national des pêches maritimes et des élevages...
Tipo: Text Palavras-chave: Golfe du Lion; Méditerranée; Recherche action; Gestion des pêches; Gulf of Lions; Méditerranée; Seek action; Management of fishings.
Ano: 1994 URL: https://archimer.ifremer.fr/doc/1994/rapport-1658.pdf
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L'état des communautés exploitées au large des côtes de France. Application d'indicateurs à l'évaluation de l'impact de la pêche. Bilan 2004 – Edition 2009 ArchiMer
Morin, Jocelyne; Bertrand, Jacques; Cochard, Marie-laure; Coppin, Franck; Leaute, Jean-pierre; Lobry, Jeremy; Mahe, Jean-claude; Poulard, Jean-charles; Rochet, Marie-joelle; Schlaich, Ivan; Souplet, Arnauld; Trenkel, Verena; Vaz, Sandrine; Verin, Yves.
Since about twenty years, Ifremer have carried out fishery surveys along the French coasts. A dynamic indicator-based approach to the assessment of multi-stock fisheries has been applied to these data series. Reference points for non-commercial populations and community indicators are seldom available, but reference directions are well established: it is known whether fishing will increase or decrease the indicator, hence the direction that should be avoided. A set of simple indicators of fishing impacts on fish populations and communities were estimated from time-series data provided by scientific surveys (population abundance and average length, community total biomass and number, average length and weight, and size spectrum). Trends in these indicators...
Tipo: Text Palavras-chave: Communauté; Population; Indicateurs; Campagnes scientifiques; Pêcheries multi spécifiques; Approche écosystémique pour la gestion des pêches.
Ano: 2009 URL: http://archimer.ifremer.fr/doc/2009/rapport-7293.pdf
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Distribution des tailles de homard (Homarus gammarus L.) le long des côtes bas-normandes ArchiMer
Bertrand, Jacques.
Observations on lobsters catch with pots along the coasts of Basse-Normadie prove that large variations in the distribution of weight appear on adjoining zones. Influence of factors as environement, particularly substrat and tide, as also fishing effort are analysed. Effects of the evolutions in the year of animals catchability are also expected.
Tipo: Text Palavras-chave: Crustacés; Crustacea; Homard; Homarus gammarus; Normandie; Pêche; Distribution; Basse Normandie.
Ano: 1983 URL: http://archimer.ifremer.fr/doc/00009/11984/8688.pdf
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Reproducibility of the multi-component aspect of species diversity across different areas and scales: towards the constitution of a shortlist of complementary indices for monitoring fish diversity? ArchiMer
Gaertner, Jean-claude; Merigot, Bastien; Relini, Giulio; Bertrand, Jacques; Mazouni, Nabila; Politou, Chrissi-yianna; Gil De Sola, Luis; Kallianiotis, Argyris; Carpentieri, Paolo; Murenu, Matteo; Durbec, Jean-pierre; Vrgoc, Nedo; Ungaro, Nicola.
Recent theoretical and field studies conducted in both terrestrial and marine ecosystems have suggested that diversity could be a more complex and multi-component concept than previously thought. However, it is still poorly understood to what extent the information provided by the various indices is complementary with regard to diversity, and to what extent this complementarity is reproducible in different situations or at different scales of observation. In the present work, we have analysed the reproducibility of the empirical relationships between 11 diversity indices related to four major aspects (components) of species diversity (species richness, rarity, evenness and species taxonomy) in order to determine whether there is a general pattern of...
Tipo: Text
Ano: 2010 URL: http://archimer.ifremer.fr/doc/00029/14064/11382.pdf
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Populations ichtyologiques démersales du plateau continental. Sous-région marine Méditerranée occidentale. Evaluation initiale DCSMM. ArchiMer
Bertrand, Jacques.
Tipo: Text Palavras-chave: Méditerranée; Poissons démersaux; Plateau continental; Espèces sensibles; Campagnes MEDITS.
Ano: 2012 URL: https://archimer.ifremer.fr/doc/00331/44211/43780.pdf
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Campagne internationale de chalutage démersal en Méditerranée (MEDITS). Rapport final ArchiMer
Bertrand, Jacques.
Le présent projet de programme international s'inscrit dans la ligne des recommandations de différents forums scientifiques (CSTP, séminaire européen d'Ancone, etc.) qui ont exprime le besoin de connaissances biologiques sur les espèces démersales exploitées par les flottilles de pêche en Méditerranée. Ces groupes avaient reconnu que les caractéristiques de la pêche dans cette région, et en particulier la forte dispersion de lactivité, ne permettaient pas de recueillir les informations nécessaires à une évaluation globale des ressources halieutiques de la région avec un niveau de précision suffisant à partir des résultats de lactivité des flottilles professionnelles. Le présent projet fait également référence a l'urgente nécessité, reconnue par la...
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Ano: 1994 URL: http://archimer.ifremer.fr/doc/1994/rapport-3938.pdf
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Poissons et invertébrés au large des côtes de France. Indicateurs issus des pêches scientifiques. Bilan 2004 ArchiMer
Bertrand, Jacques; Cochard, Marie-laure; Coppin, Franck; Leaute, Jean-pierre; Lobry, Jeremy; Mahe, Jean-claude; Morin, Jocelyne; Poulard, Jean-charles; Rochet, Marie-joelle; Schlaich, Ivan; Souplet, Arnauld; Trenkel, Verena; Verin, Yves; SIH-C.
The integration of fishing management into the ecosystemic approach has been recommended for many years by international consultative bodies; it is also written into international conventions and agreements. The implementation of the ecosystemic approach involves the development of programmes for monitoring exploited ecosystems in order to measure the effects of management steps. Plotting the results of these observations for operational reasons requires formalizing summary performance indicators. IFREMER has carried out halieutic observation campaigns for some twenty years along the coasts of France from oceanographic ships and chartered ships. The objective of these campaigns is to produce abundance indices of species that are of halieutic interest....
Tipo: Text Palavras-chave: Ecosystem; Indicating; Scientific survey; Scientific research; Fishing; English Channel; Bay of Biscay; France; Shellfish; Fish; Invertébrés; Poissons; Ecosystème; Indicateur; Campagne océanographique; Recherche scientifique; Pêche halieutique; Pêche; Mer du nord; Golfe de gascogne; Manche; France.
Ano: 2007 URL: http://archimer.ifremer.fr/doc/2007/rapport-2327.pdf
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Stability of spatial structures of demersal assemblages: a multitable approach ArchiMer
Gaertner, Jean-claude; Chessel, Daniel; Bertrand, Jacques.
The present work is based on a set of bottom trawl surveys performed in the Gulf of Lions between 1983 and 1992. A new method which couples the STATIS multitable approach with the logic of correspondence analysis (CoA) is proposed to study the stability of spatial organization of demersal assemblages in terms of species composition. This CoA version of STATIS has provided a clear representation of the stable part of the spatial structure of the assemblages. In addition, it gave an insight into the interannual variations of the distribution of each population around the reference structure. Our results showed that the demersal assemblages of the Gulf of Lions exhibited strong spatial structuring, mainly orientated along a bathymetric gradient. This gradient...
Tipo: Text Palavras-chave: Assemblage de poissons; Chalutage; Analyse multitableaux; Méditerranée; Stabilité; Structure spatiale; Fish assemblage; Trawl surveys; Multitable analysis; Correspondence analysis; Mediterranean sea; Stability; Spatial structure.
Ano: 1998 URL: https://archimer.ifremer.fr/doc/1998/publication-875.pdf
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Optimisation des campagnes halieutiques pour la construction d’indicateurs DCSMM. ArchiMer
Baudrier, Jerome; Wessel, Nathalie; Lecomte, Jean-paul; Bertrand, Jacques.
Tipo: Text
Ano: 2015 URL: http://archimer.ifremer.fr/doc/00313/42400/41748.pdf
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Etude des activites halieutiques le long du littoral. Releves thermographiques en baie de la Possession et en baie de Saint Paul (La Réunion) ArchiMer
Bertrand, Jacques; Biais, Gerard; Taquet, Marc.
The follow-up of the activity of the boats practising offshore fishing in the North-West of the La Réunion Cbaies of the Possession and Paul Saint) was carried out over one year(April 86 - March 87) thanks to the application of a strategy of sampling allowing the collection of the following statistics: total effort and by machine, captures total and by species.The study allowed a first approach of the space-time distribution of the activity of the fleet. It reveals the very high participation of the yachtmen in the halieutic exploitation of the studied sector. It also highlights the importance of tunas in the captures, which in weight are largely majority.
Tipo: Text Palavras-chave: La Réunion; Echantillonnage; Petite pêche; La Réunion; Sampling; Small fishing.
Ano: 1987 URL: https://archimer.ifremer.fr/doc/1987/rapport-1584.pdf
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Variabilité spatiale et temporelle d'une pêcherie au filet dans le golfe du Lion. Essai d'évaluation de l'impact d'un récif artificiel ArchiMer
Duclerc, Jean; Bertrand, Jacques.
The laying out of an offshore site in the gulf of Lion has been realized by immersion of concrete structures in 1985. Two complementary studies have been conducted in order to estimate the impact of such artificiel reef. Gillnet fishery surveys have been done in the vicinity of the structures and also on a control site. Moreover the local profcssional fishery has been investigated for two periods of 16 months, one berore and one arter the reef immersion. The results of the gillnet surveys have already been submitted to publication and the present study displays the investigations concerning the local fishery. It has been shown by the gillnet fishing surveys that the artificial reef led in their very close vicinity to variations in marine species...
Tipo: Text Palavras-chave: Récifs artificiels; Méditerranée; Pêcheries; Artificial reef; Mediterranean; Fisheries.
Ano: 1993 URL: https://archimer.ifremer.fr/doc/00003/11416/7959.pdf
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Étude halieutique de projet de site FLAMANVILLE (Manche) - Premier cycle annuel. Volume III - Biologie halieutique ArchiMer
Bertrand, Jacques; Tetard, Alain; Liorzou, Bernard; Peronnet, Isabelle; Leblond, Eric; Nedelec, Daniel.
L'Etude de Projet des ressources halieutiques présentes dans le secteur de Flamanville a pour objectif, dans une première phase, de préciser les données générales sur la pêche présentées dans le rapport d'Avant-projet (PERODOU, 1976), en s'attachant notamment à l'analyse des variations saisonnières et spatiales. Cette première étape conduit à l'étude biologique des principaux groupes de la macrofaune fréquentant le secteur, étude qui ne prendra tout son sens qu'intégrée aux autres volets du programme général de travaux commandé par-E.D.F. : hydrologie, plancton, benthos
Tipo: Text
Ano: 1979 URL: http://archimer.ifremer.fr/doc/00045/15650/13053.pdf
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Guide de la mensuration des poissons, mollusques, crustacés et mammifères marins en halieutique ArchiMer
Badts, Vincent; Bertrand, Jacques.
This guide presents the rules of measurement of fishes, mollusks, shellfishes and marine mammals applicable to the halieutic observations coordinated by lfremer, including the actions driven within the framework of control networks coordinated at the international level, in particular within the European regulation on the data collection regulation (OCR).
Tipo: Text Palavras-chave: Mensuration; Taille; Poissons; Mollusques; Crustacés; Mammifères marins; Halieutique; Protocoles; Measurement; Size; Fishes; Mollusks; Shellfishes; Marine mammals; Halieutic; Protocols.
Ano: 2009 URL: https://archimer.ifremer.fr/doc/00503/61477/65257.pdf
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Do population and community metrics tell the same story about recent changes in Northern Mediterranean fish communities? ArchiMer
Rochet, Marie-joelle; Trenkel, Verena; Gil De Sola, Luis; Politou, Chrissi-yianna; Tserpes, George; Bertrand, Jacques.
This document presents a comparative study of human impacts on the length-structure of fish communities across North-Mediterranean ecosystems. We use survey data to examine trends in length-based metrics and their consistency within and among the two levels of organisation populations and communities, and to suggest interpretations of observed trend combinations. We start from a set of population processes potentially affected by human pressures: fishing will induce mortality especially in target species, whereas the hydrological environment and eutrophication potentially affect recruitment and individual growth. How population changes will be reflected at the community level is expected to depend on community evenness. Based on this expectation, a...
Tipo: Text Palavras-chave: Community metrics; Ecosystem approach to fisheries; Fish community; Length-based metrics; Mediterranean; Survey data.
Ano: 2007 URL: http://archimer.ifremer.fr/doc/00133/24377/22389.pdf
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Diagnostic de la contamination chimique de la faune halieutique des littoraux des Antilles françaises. Campagnes 2008 en Martinique et en Guadeloupe ArchiMer
Bertrand, Jacques; Abarnou, Alain; Bocquene, Gilles; Chiffoleau, Jean-francois; Reynal, Lionel.
During the years 1972-1993, kepone a persistent pesticide has been used in the banana fields of the French West Indies (Martinique and Guadeloupe) to content a weevil. A slow desorption of the molecule from soil induces its transfer to the sea through the rivers from leaching and erosion. This study intended to take stock on the contamination by kepone of the fishery species around the islands fifteen years after the kepone ban. Furthermore other chemical pollutants were sought in fish and shellfish around the Martinique island. The results confirmed persistence of marine fauna contamination by kepone, mainly in the alluvium areas in front of polluted rivers. They shown also that this contamination may spread more widely but with fast decreasing through...
Tipo: Text Palavras-chave: Antilles; Chlordécone; Pollution chimique; Environnement marin; Caribbean; Kepone; Chemical pollution; Marine environment.
Ano: 2009 URL: http://archimer.ifremer.fr/doc/2009/rapport-6896.pdf
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