Consulta: subjectFacets:"Mediterranean sea"
Registros recuperados: 42
Data/hora: 03/06/2024 07:23:01

Nutrient Fluxes Associated With Submarine Groundwater Discharge From Karstic Coastal Aquifers (Côte Bleue, French Mediterranean Coastline)
Provedor de dados: 5
Autores: Bejannin, Simon; Tamborski, Joseph James; Van Beek, Pieter; Souhaut, Marc; Stieglitz, Thomas; Radakovitch, Olivier; Claude, Christelle; Conan, Pascal; Pujo-pay, Mireille; Crispi, Olivier; Le Roy, Emilie; Estournel, Claude.
Determination of submarine groundwater discharge (SGD) from karstic coastal aquifers is important to constrain hydrological and biogeochemical cycles. However, SGD quantification using commonly employed geochemical methods can be difficult to constrain under the presence of large riverine inputs, and is further complicated by the determination of the karstic groundwater endmember. Here, we investigated a coastal region where groundwater discharges from a karstic aquifer system using airborne thermal infrared mapping and geochemical sampling conducted along offshore transects. We report radium data (223Ra, 224Ra, 228Ra) that we used to derive fluxes (water, nutrients) associated with terrestrial groundwater discharge and/or seawater circulation through the...
Tipo: Text
Palavras-chave: Submarine groundwater discharge; Mediterranean sea; Radium isotopes; Thermal infrared remote sensing; Nutrient fluxes; GEOTRACES.
Ano: 2020
URL: https://archimer.ifremer.fr/doc/00610/72171/70945.pdf

Cycle annuel de mesures physiques dans le milieu récepteur marin. Mouillage T.O. dans la grande rade de Toulon. Programme rejets urbains. Volet Méditerranée
Provedor de dados: 5
Autores: Thouvenin, Benedicte; Romana, L. A.; Loarer, Ronan; Joly, R.
This report is a compilation of current, wind, temperature and salinity measurements carried out during one and a half years, in the bay of Toulon, near the Sainte Marguerite sea outfall.
Tipo: Text
Palavras-chave: Mesures; Courants; Température; Salinité; Météorologie; Toulon; Méditerranée; Measurements; Currents; Temperature; Salinity; Meteorology; Toulon; Mediterranean sea.
Ano: 1988
URL: http://archimer.ifremer.fr/doc/00432/54351/58914.pdf

Functional traits unravel temporal changes in fish biomass production on artificial reefs
Provedor de dados: 5
Autores: Cresson, Pierre; Le Direach, Laurence; Rouanet, Elodie; Goberville, Eric; Astruch, Patrick; Ourgaud, Mélanie; Harmelin-vivien, Mireille.
Artificial reefs (ARs) are deployed worldwide as they are expected to support fisheries management. While the underlying mechanisms remain widely debated, production was recently determined as the most probable cause of increases in fish biomass. Changes in fish biomass in a temperate AR system were investigated from December 2008 to November 2015 by considering seven distinct functional groups, and isotopic functional indices were used to identify how these changes may have affected organic matter (OM) fluxes. Contrasting patterns of change were observed between functional trophic groups, highlighting that combining the biomass of all species present in a community is inappropriate for assessing AR-induced effects. Benthic sedentary species predominated...
Tipo: Text
Palavras-chave: Artificial reefs; Mediterranean sea; Fish biomass production; Isotopic functional indices.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00484/59577/62566.pdf

Etude des fonds chalutables de la mediterranee occidentale (ecologie et peche) « Président-Théodore-Tissier » 1957 à 1960 et « Thalassa » 1960 et 1961
Provedor de dados: 5
Autores: Maurin, Claude.
Tipo: Text
Palavras-chave: Geographical distribution; Commercial species; Fishing gear; Trawling tools; Mediterranean sea; Trawling zones.
Ano: 1962
URL: http://archimer.ifremer.fr/doc/1962/publication-2233.pdf

Larval Fish Swimming Behavior Alters Dispersal Patterns From Marine Protected Areas in the North-Western Mediterranean Sea
Provedor de dados: 5
Autores: Faillettaz, Robin; Paris, Claire B.; Irisson, Jean-olivier.
Most demersal fishes undergo a dispersal phase as larvae, which strongly influences the connectivity among adult populations and, consequently, their genetic structure and replenishment opportunities. Because this phase is difficult to observe directly, it is frequently simulated through numerical models, most of which consider larvae as passive or only vertically migrating. However, in several locations, including the Mediterranean Sea, many species have been shown to swim fast and orient. Here we use a Lagrangian model to study connectivity patterns among three Mediterranean Marine Protected Areas (MPAs) and compare simulations in which virtual larvae are passive to simulations in which oriented swimming is implemented. The parameterization of behavior...
Tipo: Text
Palavras-chave: Fish larvae; Behavior; Swimming; Connectivity; Dispersal; Mediterranean sea; Marine protected areas; Modeling.
Ano: 2018
URL: https://archimer.ifremer.fr/doc/00634/74618/74548.pdf

Oligotrophication and Metabolic Slowing-Down of a NW Mediterranean Coastal Ecosystem
Provedor de dados: 5
Autores: Agusti, Susana; Martinez-ayala, Juan; Regaudie-de-gioux, Aurore; Duarte, Carlos M.
Increased oligotrophication is expected for oligotrophic areas as a consequence of ocean warming, which reduces diffusive vertical nutrient supply due to strengthened stratification. Evidence of ocean oligotrophication has been, thus far, reported for the open ocean. Here we reported oligotrophication and associated changes in plankton community metabolism with warming in a pristine, oligotrophic Mediterranean coastal area (Cap Salines, Mallorca Island, Spain) during a 10 years time series. As a temperate area, there were seasonal patterns associated to changes in the broad temperature range (12.0.28.4.C), with a primary phytoplankton bloom in late winter and a secondary one in the fall. Community respiration (R) rates peaked during summers and showed...
Tipo: Text
Palavras-chave: Oligotrophiocation; Mediterranean sea; Respiration; Net community production; Nutrients; Gross primary production; Warming; Chlorophyll.
Ano: 2017
URL: https://archimer.ifremer.fr/doc/00419/53091/54048.pdf

Bilan de l'état des stocks et des mesures de gestion de l'espadon (xiphias gladius) dans les océans Atlantique, pacifique et indien et en mer Méditerranée
Provedor de dados: 5
Autores: Le Couls, Sarah; Bourjea, Jerome.
Cette synthèse bibliographique présente les différentes commissions internationales de gestion des grands pélagiques dans les océans Indien, Atlantique et Pacifique, respectivement la CTOI, la CICTA et l'IATTC/WCPFC. De plus, cette synthèse focalise sur le cas de l'espadon Xiphias gladius et détaille pour chaque stock, les captures, l'état du stock ainsi que les mesures de gestion passées et en cours. Le stock de la Méditerranée est l'unique stock en état de surexploitation avéré et fait l'objet de mesures de gestion (interdiction des filets dérivants, fermeture saisonnière de la pêche) mais pas de TAC. Les stocks de l'Atlantique Nord, du Pacifique Sud-est, et de l'Océan Indien sont proches de la pleine exploitation voir en pleine exploitation. Parmi ces...
Tipo: Text
Palavras-chave: Espadon; Évaluation de la ressource; Océan Atlantique; Océan Pacifique; Océan indien; Mediterranée; Pleine exploitation; TAC; Quota; Swordfish; Resources assessment; Atlantic ocean; Pacific ocean; Indien ocean; Mediterranean sea; Full exploitation; TAC; Quota.
Ano: 2010
URL: http://archimer.ifremer.fr/doc/00001/11211/7565.pdf

Contribution a la connaissance de la faune ichthyologique de la Mediterranee les blenniidae de la region de Villefranche-sur-Mer
Provedor de dados: 5
Autores: Sardou, J.
A list of 16 Blennius living near by Villefranche-sur-Mer (15 in full strength sea water, and 1 in fresh water, in the Var river) is given. 6 of them were collected here for the first time. Radial and vertebral formula of 356 fishes among 18 spp of Blennius (14 fished at Villefranche and 4 spp from another place) are indicated.
Tipo: Text
Palavras-chave: Mediterranean sea; Geographical distribution; Inventory; Blenniidei.
Ano: 1973
URL: http://archimer.ifremer.fr/doc/1973/publication-2165.pdf

Les sites méditerranéens. Ecologie pélagique et benthique. Rapport concernant les campagnes Ecolion 1 &amp; 2
Provedor de dados: 5
Autores: Arzul, G; Panouse, M; Romana, A; Fiala, M; Razouls, S; De Bovee, F; Labat, J.p.
As part of its nuclear program, E.D.F. put the C.N.E.X.O. in charge of the ecological study of a list of sites that had been considered for the implantation of nuclear power plants on the Mediterranean coast: PORT-la-N0UVELLE South, PORT-la-NOUVELLE North and FLEURY-sur-AUDE. The aim of this study is to compare, from an ecological point of view, the different sites during critical periods of the annual cycle: summer and spring. This report summarises the results of the two campaigns (ECOLION l and II) conducted on the area located between the Cap d'Agde and the Cap Leucate, and including the three studied sites. The study analysed the physicochemical parameters and the primary and secondary pelagic productions, and includes a qualitative and quantitative...
Tipo: Text
Palavras-chave: Ecology; Ecolion; Cruise; Mediterranean sea; Ecologie; Ecolion; Campagne océanographique; Mer Méditerranée.
Ano: 1982
URL: http://archimer.ifremer.fr/doc/1982/rapport-3698.pdf

Nouvelles donnees sur la reproduction du thon rouge (Thunnus thynnus L.) et d'autres especes de thonides en Mediterranee
Provedor de dados: 5
Autores: Duclerc, J; Sacchi, J; Piccinetti, C; Piccinetti-manfrin, G; Dicenta, A; Barrois, J-m.
Two international research cruises on board of the research vessel 'Ichthys' the first one in Aug-Sept 1971, and the second other in June-July 1972, have shown the reproduction of Thunnus thynnus, T.alalunga, Auxis thazard and Sarda in the surroundings of the Balearic Islands. The observations were made on the planctonic stages of these spp and on the physico-chemical and biological conditions of the environment. Some data were also collected on the presence of juvenile or mature stages of these fishes and on their fishery.
Tipo: Text
Palavras-chave: Plankton; Eggs; Larvae; Physico chemical conditions; Mediterranean sea; Reproduction; Thunnidae; Bluefin tuna.
Ano: 1973
URL: http://archimer.ifremer.fr/doc/1973/publication-2159.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

Hydrologie de la Mediterranée Occidentale au nord du 42e parallèle en automne 1958 (Campagne du navire « Président-Théodore-Tissier » du 27 septembre au 18 octobre 1958)
Provedor de dados: 5
Autores: Furnestin, Jean; Allain, Charles.
Tipo: Text
Palavras-chave: Mediterranean sea; Temperature; Salinity; Hydrology.
Ano: 1962
URL: http://archimer.ifremer.fr/doc/00127/23788/21698.pdf

C18 Sep-Pak extractable dissolved organic copper related to hydrochemistry in the North-West Mediterranean
Provedor de dados: 5
Autores: El Sayed, Mohamed A.; Aminot, Alain.
Extractable organic copper using C18 Sep-Pak cartridges was investigated in seawater after laboratory experiment showed that the (C18 Sep-Pak) cartridges were reliable, in open and coastal waters with normal levels of dissolved organic carbon, for the separation of a specific fraction of organo-copper complexes.Given that the Sep-Pak cartridges retain the hydrophobic fraction of the dissolved organic matter, this extraction technique was applied for studying the characteristics of this particular hydrophobic dissolved organic copper fraction (hDOCu) in the north-western Mediterranean waters. Surface distribution of hDOC is influenced by organic matter input from the river Rhone and its estuary as well as the physical processes affecting the primary...
Tipo: Text
Palavras-chave: Mediterranean sea; Seawater; Dissolved organic matter; Copper compounds.
Ano: 2000
URL: http://archimer.ifremer.fr/doc/2000/publication-1681.pdf

Age et croissance de l'oursin Paracentrotus lividus Lamarck, 1816 (Echinodermata-Echinoidea) dans le golfe de Tunis (Méditerranée)
Provedor de dados: 5
Autores: Sellem, Fériel; Langar, Habib; Pesando, Danielle.
The age of Paracentrotus lividus in the gulf of Tunis was evaluated by analysing the natural growth banding in the interambulacral plates from the oral part of the test. It appeared that growth rates increased in spring and summer, and decreased in autumn and winter. The maximum age and diameter were estimated to be 8 years and 53 mm respectively, Compared to populations of Paracentrotus lividus from NW Mediterranean and Atlantic, that of the gulf of Tunis presented a more rapid growth.
Tipo: Text
Palavras-chave: Méditerranée; Oursin comestible; Âge et croissance; Mediterranean sea; Sea urchin; Age and growth.
Ano: 2000
URL: http://archimer.ifremer.fr/doc/00323/43384/42830.pdf

Use of MEDITS trawl survey data and commercial fleet information for the assessment of some Mediterranean demersal resources
Provedor de dados: 5
Autores: 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

The Var turbidite system (Ligurian Sea, northwestern Mediterranean) - morphology, sediment supply, construction of turbidite levee and sediment waves: implications for hydrocarbon reservoirs
Provedor de dados: 5
Autores: Migeon, Sébastien; Mulder, Thierry; Savoye, Bruno; Sage, Françoise.
The Var turbidite system is a small sandy system located in the Ligurian Basin. It was deposited during the Pliocene-Quaternary in a flat-floored basin formed during the Messinian salinity crisis. The system was fed through time by the Var and Paillon canyons that connect directly to the Var and Paillon rivers. It is still active during the present sea-level highstand. Two main mechanisms are responsible for gravity-flow triggering in the Var turbidite system: (1) mass-wasting events affect mainly the upper part of the continental slope, in areas where volumes of fresh sediment delivered by rivers are highest, and result from the under-consolidation state of slope sediments and earthquakes, and (2) high-magnitude river floods resulting from melting of snow...
Tipo: Text
Palavras-chave: Geomorphology; Sediment waves; Turbidity; Mediterranean sea; Ligurian basin.
Ano: 2006
URL: https://archimer.ifremer.fr/doc/2006/publication-2258.pdf

Etat et perspectives de la conchyliculture méditérranéenne. Aspects économiques
Provedor de dados: 5
Autores: Paquotte, Philippe.
This presentation of the economic aspects of the Mediterranean shellfish culture is based on the first intermediary report and on different country reports (France, Spain, Italy) from EU's FAR program n°2-456 about "the analysis of the costs and prices for an economic study of shellfish culture management in Europe". The aim of the first part of this study is to identify the production and marketing techniques of the main EEC countries, analyse international trade between them and consider the development perspectives of these productions and trade. (unverified OCR)
Tipo: Text
Palavras-chave: Economy; Mediterranean sea; Shellfish culture; SEM; Economie; Méditerranée; Conchyliculture.
Ano: 1992
URL: http://archimer.ifremer.fr/doc/1992/acte-3711.pdf

Eivissa slides, western Mediterranean Sea: morphology and processes
Provedor de dados: 5
Autores: Lastras, Galderic; Canals, M; Amblas, D; Ivanov, M; Dennielou, Bernard; Droz, Laurence; Akhmetzhanov, A.
After obtaining full-coverage swath bathymetry data in 1995 and very high-resolution acoustic profiles in 2002, four slides at the Balearic Margin of the Eivissa Channel in the western Mediterranean Sea were revisited in 2004 when side-scan sonar data were collected using a MAK-1M deep-towed acoustic system. These new findings, higher in resolution than those for the swath bathymetry, show two main features previously undetected within these submarine landslides: (1) a series of step-forming inclined and detached slabs oriented perpendicular to the slide movement and located in the uppermost part of the slides, and (2) arcuate regular positive ridges oriented also normal to the slide movement and located in the depositional lobes of some of the slides. The...
Tipo: Text
Palavras-chave: Morphology; Bathymetry; Slides; Mediterranean sea; Eivissa channel.
Ano: 2006
URL: http://archimer.ifremer.fr/doc/2006/publication-2087.pdf

Phytoplancton et production primaire dans le secteur sud-occidental de la Mediterranee
Provedor de dados: 5
Autores: Furnestin, Marie-louise.
56 samples were collected from 14 stations along the Spanish coast, the North African coast, the Balearic Islands and Sardinia. 60 species of diatoms were recorded made up mostly of tychopelagic and benthic forms; these were far more abundant than the Dinophyceae of which only 22 species were recorded. 6 species of phytoplankton were dominant and represented similar to 70% of the total samples. The average content of chlorophyll a at depths of 1-70 m was 0.35 mg /m super(3), that of chlorophyll b was 0.15 mg/m super(3) and that of chlorophyll c was 2.20 m-S.P.U./M super(3)/hour. The highest level of chlorophyll a corresponded to regions of very low phosphate levels and the number of cells and species were at a maximum for an incident light of 10-15% and at...
Tipo: Text
Palavras-chave: Mediterranean sea; Geographical distribution; Phytoplankton; Primary production.
Ano: 1973
URL: http://archimer.ifremer.fr/doc/1973/publication-2224.pdf

Note preliminaire a l'etude des Cetaces des cotes Francaises de Mediterranee
Provedor de dados: 5
Autores: Duguy, Raymond; Cyrus, Jean-louis.
This preliminary study of whales and dolphins off the French Mediterranean coasts refers to 15 spp, 11 Odontoceti and 4 Mysticeti: 3 of them are common; Delphinus delphis, Tursiops truncatus and Ziphius cavirostris (in the Ligurian sea), 2 are frequent in the Ligurian sea: Grampus griseus and Balaenoptera physalus, 3 are not uncommon: Stenella coeruleoalba, Globicephala melaena, and Physeter macrocephalus, 2 are rare: Pseudorca crassidens and Orcinus orca, 3 are exceptional: Balaena acutorostrata, Megaptera novaeangliae, and Steno bredanensis, 2 seem doubtful: Hyperoodon ampullatus and Balaenoptera musculus. Also important is the fact that no Phocoena phocoena has been observed. More generally, whales and dolphins seem to be more abundant in the area...
Tipo: Text
Palavras-chave: Mediterranean sea; Geographical distribution; Dolphins; Whales; Mysticeti; Odontoceti.
Ano: 1973
URL: http://archimer.ifremer.fr/doc/1973/publication-2157.pdf

First report of goniodomin A production by the dinoflagellate Alexandrium pseudogonyaulax developing in southern Mediterranean (Bizerte Lagoon, Tunisia)
Provedor de dados: 5
Autores: Triki, Habiba Zmerli; Laabir, Mohamed; Moeller, Peter; Chomerat, Nicolas; Daly-yahia, Ons Kefi.
The dinoflagellate Alexandrium pseudogonyaulax is widely distributed around the world including the Mediterranean waters. The objectives of this study were to determine the morphology and phylogenic affiliation of A. pseudogonyaulax strain isolated from Bizerte Lagoon (Mediterranean waters, Tunisia) and investigate its toxicity. Molecular analyses confirmed the morphological identification of the isolated strain (APBZ12) as A. pseudogonyaulax. Moreover, it showed that it is 100% identical with strains of this species found in New Zealand, Japan, China and North Sea (Norway and Denmark) suggesting that this species is cosmopolitan. Until now, no toxin studies have been conducted on fully characterized (morphologically and molecularly) A. pseudogonyaulax....
Tipo: Text
Palavras-chave: Alexandrium pseudogonyaulax; Goniodomin A; Mediterranean sea; Morphology; Phylogeny.
Ano: 2016
URL: http://archimer.ifremer.fr/doc/00302/41356/40548.pdf

Hydrologie de la Mediterranée Occidentale au nord du 42e parallèle en automne 1958 (Campagne du navire « Président-Théodore-Tissier » du 27 septembre au 18 octobre 1958)
Provedor de dados: 5
Autores: Furnestin, Jean; Allain, Charles.
Tipo: Text
Palavras-chave: Mediterranean sea; Temperature; Salinity; Hydrology.
Ano: 1962
URL: http://archimer.ifremer.fr/doc/1962/publication-2232.pdf

How can we quantify impacts of contaminants in marine ecosystems? The ICON project
Provedor de dados: 5
Autores: Hylland, Ketil; Burgeot, Thierry; Martinez-gomez, Concepcion; Lang, Thomas; Robinson, Craig D.; Svavarsson, Jorundur; Thain, John E.; Vethaak, A. Dick; Gubbins, Matthew J.
An international workshop on marine integrated contaminant monitoring (ICON) was organised to test a framework on integrated environmental assessment and simultaneously assess the status of selected European marine areas. Biota and sediment were sampled in selected estuarine, inshore and offshore locations encompassing marine habitats from Iceland to the Spanish Mediterranean. The outcome of the ICON project is reported in this special issue as method-oriented papers addressing chemical analyses, PAH metabolites, oxidative stress, biotransformation, lysosomal membrane stability, genotoxicity, disease in fish, and sediment assessment, as well as papers assessing specific areas. This paper provides a background and introduction to the ICON project, by...
Tipo: Text
Palavras-chave: ICON; Contaminants; North sea; Mediterranean sea; Biological effects; Biomarkers; Monitoring.
Ano: 2017
URL: http://archimer.ifremer.fr/doc/00297/40782/44970.pdf

Stability of spatial structures of demersal assemblages: a multitable approach
Provedor de dados: 5
Autores: 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

Analyse de l’activité de pêche aux filets maillants dérivants de moins de 2,5 km en Méditerranée et caractéristiques techniques des engins
Provedor de dados: 5
Autores: Sacchi, Jacques; Lespagnol, Patrick.
Suite à l'interdiction communautaire d'utiliser des filets dérivants (définis selon le  règlement CE N° 809/2007) pour la capture des espèces citées dans l'annexe VIII du règlement 1239/98 (modifiant le règlement 894/97) la pratique de cette technique se trouve actuellement limitée à un nombre réduit de métiers utilisés saisonnièrement par la flottille de petite pêche française de Méditerranée, des côtes du Roussillon à celles de Corse. Ces métiers ciblant principalement des sparidés, du bar et quelques petits pélagiques utilisent des filets maillants de surface ou de fond, soit calés au moyen de lignes de mouillage soit en dérive amarrés au navire. Une grande partie des informations sur l’activité de pêche en Méditerranée des filets maillants provient des...
Tipo: Text
Palavras-chave: Filet maillant; Filet maillant dérivant; Engin de capture; Technique de pêche; Méditerranée; Enquête d'activité; Gillnet; Drifting gillnet; Fishing gear; Fishing technics; Mediterranean sea; Activity survey.
Ano: 2010
URL: http://archimer.ifremer.fr/doc/00001/11215/7784.pdf

Review and update of the French and Spanish purse seine size at catch for the Mediterranean bluefin tuna fisheries 1970-2010
Provedor de dados: 5
Autores: Gordoa, A; Rouyer, Tristan; Ortiz, M.
Tipo: Text
Palavras-chave: Bluefin tuna; Purse seine; Mediterranean sea; Size structure.
Ano: 2017
URL: https://archimer.ifremer.fr/doc/00490/60191/63534.pdf

Biodiversity of Cold Seep Ecosystems Along the European Margins
Provedor de dados: 5
Autores: Vanreusel, Ann; Andersen, Ann C.; Boetius, Antje; Connelly, Douglas; Cunha, Marina R.; Decker, Carole; Hilario, Ana; Kormas, Konstantinos Ar.; Maignien, Lois; Olu, Karine; Pachiadaki, Maria; Ritt, Benedicte; Rodrigues, Clara; Sarrazin, Jozee; Tyler, Paul; Van Gaever, Saskia; Vanneste, Heleen.
During the European Commission's Framework Six Programme, HERMES, we investigated three main areas along the European margin, each characterized by the presence of seep-related structures exhibiting different intensity of activity and biological diversity. These areas are: (1) the Nordic margin with the Hakon Mosby mud volcano and many pockmarks, (2) the Gulf of Cadiz, and (3) the eastern Mediterranean with its hundreds of mud volcanoes and brine pool structures. One of the main goals of the HERMES project was to unravel the biodiversity associated with these seep-associated ecosystems, and to understand their driving forces and functions, using an integrated approach. Several multidisciplinary research cruises to these three areas provided evidence of...
Tipo: Text
Palavras-chave: Mosby mud volcano; Gulf of mexico; Cadiz ne atlantic; Deep sea fan; Community structure; Microbial communities; Fluid flow; Mediterranean sea; Carbonate crusts; Norwegian sea.
Ano: 2009
URL: http://archimer.ifremer.fr/doc/2009/publication-6375.pdf

Typologie de la flottille chalutière du port de Sète par une méthode de segmentation
Provedor de dados: 5
Autores: Taquet, Marc; Gaertner, Jean-claude; Bertrand, Jacques.
This work aims to define a typology of trawler f1eet in Sète, the main fishing harbour along the French Mediterranean coast, using several multivariate analysis methods. The fishing ships taken to account are represented by annual profiles of landing specific compositions. Five fishing strategies have been identified. A segmentation method using symbolic objects allows a formaI characterisation of the different strategies. These strategies are studied according to several general characteristics usually used for management rules elaboration (power, length, ship age). The typological analysis allows to characterise two main exploitation ways, one directed to the catch of a few species (Engraulis encrasicolus, Sardina pilchardus), the other characterised by...
Tipo: Text
Palavras-chave: Flotille; Stratégie; Chalutage; Analyse multivariée; Méditerranée; Fleet; Strategy; Fish trawling; Multivariate analysis; Mediterranean sea.
Ano: 1997
URL: http://archimer.ifremer.fr/doc/00113/22404/20101.pdf

Highly contrasted responses of Mediterranean octocorals to climate change along a depth gradient
Provedor de dados: 5
Autores: Pivotto, I. D.; Nerini, D.; Masmoudi, M.; Kara, H.; Chaoui, L.; Aurelle, D.
Climate change has a strong impact on marine ecosystems, including temperate species. Analysing the diversity of thermotolerance levels within species along with their genetic structure enables a better understanding of their potential response to climate change. We performed this integrative study on the Mediterranean octocoral Eunicella cavolini, with samples from different depths and by means of a common garden experiment. This species does not host photosynthetic Symbiodinium, enabling us to focus on the cnidarian response. We compared the thermotolerance of individuals from 20 m and 40 m depths from the same site and with replicates from the same colony. On the basis of an innovative statistical analysis of necrosis kinetics and risk, we demonstrated...
Tipo: Text
Palavras-chave: Climate change; Adaptation; Acclimatization; Eunicella cavolini; Mediterranean sea; Population genetics.
Ano: 2015
URL: https://archimer.ifremer.fr/doc/00371/48264/48637.pdf

Pharmaceuticals, alkylphenols and pesticides in Mediterranean coastal waters: Results from a pilot survey using passive samplers
Provedor de dados: 5
Autores: Munaron, Dominique; Tapie, Nathalie; Budzinski, Helene; Andral, Bruno; Gonzalez, Jean-louis.
21 pharmaceuticals, 6 alkylphenols and 27 hydrophilic pesticides and biocides were investigated using polar organic contaminant integrative samplers (POCIS) during a large-scale study of contamination of French Mediterranean coastal waters. Marine and transitional water-bodies, defined under the EU Water Framework Directive were monitored. Our results show that the French Mediterranean coastal waters were contaminated with a large range of emerging contaminants, detected at low concentrations during the summer season. Caffeine, carbamazepine, theophilline and terbutaline were detected with a detection frequency higher than 83% in the coastal waters sampled, 4-nonylphenol (4-NP), 4-tert-octylphenol (4-OP) and 4-nonylphenol diethoxylate (NP2EO) were detected...
Tipo: Text
Palavras-chave: POCIS; Emerging contaminants; Hydrophilic contaminants; Marine monitoring; Mediterranean sea.
Ano: 2012
URL: http://archimer.ifremer.fr/doc/00069/17994/15701.pdf

Indices of bluefin tuna (Thunnus thynnus thynnus) abundance derived from sale records of French purse seine catches in the Mediterranean sea
Provedor de dados: 5
Autores: Labelle, Marc; Hoch, Thierry; Liorzou, Bernard; Bigot, Jean-louis.
Sampling operations are not routinely conducted in France to monitor the landings of bluefin tuna caught by purse seiners in the Mediterranean. The length, weight and age frequencies of bluefin caught by this fleet are predicted based on sale records, length-at-age and weight-length relations, trends in fishing and natural mortality rates, and other ancillary data. The resulting length frequencies are more accurate than those predicted by Liorzou and Bigot (1992) using a simpler algorithm, and are spread more evenly across adjacent size classes. Catch-per-unil-effort (CPUE) was expressed as the numbers of age 2 bluefin caught per successful seine fishing trip in the Gulf of Lions fall fishery. CPUE indices were computed by several methods, and compared to...
Tipo: Text
Palavras-chave: Thon rouge; Senne tournante; Prises-par-unité-d'effort; Indices d'abondance; Taux de croissance; Évaluation des stocks; Mer Méditerranée; Bluefin tuna; Purse seine; Catch-per-unit-effort; Abundance indices; Growth rates; Stock-assessment; Mediterranean sea.
Ano: 1997
URL: http://archimer.ifremer.fr/doc/00188/29880/28357.pdf

Spatio-temporal dynamics of a Zostera noltii dominated community over a period of fluctuating salinity in a shallow lagoon, Southern France
Provedor de dados: 5
Autores: Charpentier, Aude; Grillas, P; Lescuyer, F; Coulet, E; Auby, Isabelle.
The consequences of a sudden decrease in water salinity on a macrophyte community dominated by the marine species Zostera noltii were investigated in a shallow coastal lagoon (Southern France). The expected change in the community assemblage was a competitive displacement of Z. noltii by Potamogeton pectinatus and Ruppia cirrhosa. However, the results of an eight-year survey did not validate this hypothesis. Zostera noltii remained dominant after three years at low salinity (ca. 5) and then suddenly disappeared within one year. The decline of Z. noltii was not associated with an increase of other species. The maximum depth colonized by all species decreased, suggesting that light availability became a limiting factor for the aquatic vegetation. The high...
Tipo: Text
Palavras-chave: Mediterranean sea; Lagoon; Recovery; Loss; Turbidity; Salinity; Mapping; Seagrass.
Ano: 2005
URL: http://archimer.ifremer.fr/doc/2005/publication-3693.pdf

Pelagic habitats in the Mediterranean Sea: A review of Good Environmental Status (GES) determination for plankton components and identification of gaps and priority needs to improve coherence for the MSFD implementation
Provedor de dados: 5
Autores: Varkitzi, I.; France, J.; Basset, A.; Cozzoli, F.; Stanca, E.; Zervoudaki, S.; Giannakourou, A.; Assimakopoulou, G.; Venetsanopoulou, A.; Mozetic, P.; Tinta, T.; Skejic, S.; Vidjak, O.; Cadiou, Jean-francois; Pagou, K.
At present there is no consistent approach for the definition of Good Environmental Status (GES) and targets in the Mediterranean Sea, especially for Biodiversity Descriptors, according to the Article 12 of the Marine Strategy Framework Directive (MSFD). The use of plankton indicators in the Mediterranean Sea refers mostly to pelagic habitats in coastal waters and to case studies connected with environmental pressures, e.g. in the Adriatic, Aegean etc. The aim of this review is to study the existing biodiversity indicators for different plankton groups in order to compare GES definitions for the Biodiversity Descriptor and identify the relevant gaps and priority needs to improve coherence for the MSFD implementation across the Mediterranean. For these...
Tipo: Text
Palavras-chave: Plankton indicators; Pelagic habitats; Biodiversity; Mediterranean sea; MSFD; GES assessment.
Ano: 2018
URL: https://archimer.ifremer.fr/doc/00451/56290/60473.pdf

Rapport de synthèse de la campagne d'évaluation de la qualité chimique de sédiments (ROCCHSED) 2016 en Méditerranée
Provedor de dados: 5
Autores: Bouchoucha, Marc; Tomasino, Corinne; Brach-papa, Christophe.
En 2016, des prélèvements de de sédiments ont été réalisés sur 54 stations en mer réparties le long de la façade méditerranéenne française au cours de la campagne ROCCHSED 16. Les contaminants organiques et métalliques ont été analysés conformément aux directives réglementaires et aux objectifs de bassin. Les résultats sont fournis dans ce rapport .
Tipo: Text
Palavras-chave: Contamination chimique; Sédiment; Mer Méditerranée; Chemical contamination; Sediment; Mediterranean sea.
Ano: 2018
URL: http://archimer.ifremer.fr/doc/00458/56961/58859.pdf

Trace metals assessment in water, sediment, mussel and seagrass species - Validation of the use of Posidonia oceanica as a metal biomonitor
Provedor de dados: 5
Autores: Lafabrie, Céline; Pergent, G; Kantin, Roger; Pergent Martini, C; Gonzalez, Jean-louis.
The accumulation of trace metals (Cd, Co, Cr, Hg, Ni and Pb) was measured in water, sediment, the mussel Mytilus galloprovincialis and the seagrass Posidonia oceanica. Samples were collected in three locations of the north-western Mediterranean (Canari, Livorno and Porto-Torres) which present different levels and sources of human impact. Analyses in the different compartments (water, sediment, M. galloprovincialis and P. oceanica) have allowed to identify Canari as the most Cd, Co, Cr and Ni contaminated site; Livorno as the most Hg contaminated and Porto-Torres as the most Pb contaminated. Furthermore, for the first time, metal concentrations found in P. oceanica have been compared with those found in the water column, in the sediment and in the...
Tipo: Text
Palavras-chave: Mediterranean sea; Marine organisms; Sediment; Seawater; Biomonitoring; Metal contamination.
Ano: 2007
URL: http://archimer.ifremer.fr/doc/2007/publication-3106.pdf

Etude morphologique du loup Dicentrarchus labrax L. de la region de Sete
Provedor de dados: 5
Autores: Barnabe, Gilbert.
Sampling of a population of D. Labrax was one with spear diving catches. Morphometric and meristic data were used to calculate a biometric index. This index showed that all the bass of the Sete area belong to Dicentrarchus labrax, even if they were black spotted on the upper part of the body. Morphology was slightly different according to sex, but sex determination was not always possible using morphometric data. This inshore population shows some morphological characteristics (branchiospine and lateral line scale number) different from the data collected on the same sp along the Maroc Atlantic coast by Gravier, 1961.
Tipo: Text
Palavras-chave: Mediterranean sea; Biometry; Anatomy; Morphology; Dicentrarchus labrax.
Ano: 1973
URL: http://archimer.ifremer.fr/doc/1973/publication-2153.pdf

Donnees preliminaires sur les caracteres biometriques des anchois Engraulis encrasicolus (Linne, 1758) des cotes de Tunisie et du Lac Ichkeul
Provedor de dados: 5
Autores: Quignard, J.p; Hamdouni, T; Zaouali, J.
Researchers have studied the number of rays in the dorsal and anal fins, the number of branchiospines and of vertebrae of the anchovies of the Tunisian coast. Regarding the number of vertebrae, the anchovies of the North West belong to the 'West Mediterranean' group and those of the North East and South East to the 'East Mediterranean' group, according to Fage's classification. The anchovies found in Lake Ishkeul are well individualised morphologically and biologically speaking and could be classified in the large group of the anchovies living in Mediterranean brackish waters; the number of their vertebrae is slightly inferior to that of the groups living in the neighbouring sea waters.
Tipo: Text
Palavras-chave: Tunisia; Mediterranean sea; Geographical distribution; Anchovy; Vertebrae; Branchiospine; Biometry; Engraulis.
Ano: 1973
URL: http://archimer.ifremer.fr/doc/1973/publication-2162.pdf

Structure et diversité génétique des populations de raie bouclée en Méditerranée
Provedor de dados: 5
Autores: Lecuyer, Romain.
Chondrichtyes are threatened by several disturbances among which is the significant development of fisheries during the 20th century. The Mediterranean sea has long been fished and keeps being intensely so by several nations that seek cost-effectiveness or food security above all. Such a background does not ease data recording and sharing for research purposes. This study mainly aims at assessing the population structure and status of thornback ray so as to avoid its deterioration due to bottom-trawl fisheries pressure, hardly reversible even with a sudden sound management. To do so, an extensive panel of nuclear genetic markers has been developed to analyze underlying structure along with differenciation and genetic diversity of Mediterranean populations....
Tipo: Text
Palavras-chave: Méditerranée; Structure de populations; Différenciation; Diversité génétique; SNP; Raja clavata; Mediterranean sea; Population structure; Differenciation; Genetic diversity; SNP; Raja clavata.
Ano: 2020
URL: https://archimer.ifremer.fr/doc/00667/77899/80091.pdf

Preliminary appraisal of wave power prospects in Lebanon
Provedor de dados: 5
Autores: Aoun, N. S.; Harajli, H. A.; Queffeulou, Pierre.
The present work is the first attempt to methodologically assess the wave power prospects off the coast of Lebanon. Working around 1.5 years of buoy data, measurements for the significant wave height and wave period were inputted to establish a joint frequency table that was related to power matrixes of three selected wave energy converters. The spatial and temporal representability of the analysis was extended through assessing altimeter data of H-s over 20 years and for three points off the coast of Lebanon; southern Lebanon, buoy location off the coast of Beirut, and northern Lebanon. The altimeter data indicated that H-s values as measured through the buoy is within 1 standard deviation of the offshore regional mean, however adopting the regional mean...
Tipo: Text
Palavras-chave: Wave energy converter; Lebanon; Significant wave height; Wave period; Mediterranean sea.
Ano: 2013
URL: http://archimer.ifremer.fr/doc/00176/28763/27296.pdf

Balneola vulgaris gen. nov., sp nov., a member of the phylum Bacteroidetes from the north-western Mediterranean Sea
Provedor de dados: 5
Autores: Urios, Laurent; Agogue, Hélène; Lesongeur, Francoise; Stackebrandt, Erko; Lebaron, Philippe.
A novel aerobic, Gram-negative bacterium, named 13IX/A01/164(T), was isolated from surface waters in the coastal north-western Mediterranean Sea. Cells were motile, straight rods, 2-5 mu m long and 0-2 mu m wide, and formed orange colonies on marine agar medium. The G+C content of the genomic DNA of strain 13IX/A01/164T was 42 mol%. Phylogenetic analysis of the 16S rRNA gene sequence placed the strain in the phylum Bacteroidetes within the family Crenotrichaceae. On the basis of 16S rRNA gene sequence comparison and physiological and biochemical characteristics, this isolate represents a novel species of a new genus, for which the name Balneola vulgaris gen. nov., sp. nov. is proposed. The type strain of Balneola vulgaris is 13IX/A01/164T (=DSM 17893T=CIP...
Tipo: Text
Palavras-chave: Mediterranean sea; Coastal waters; Microbiology; Physiology; Biochemistry; Gene sequence; Balneola vulgaris.
Ano: 2006
URL: http://archimer.ifremer.fr/doc/2006/publication-2126.pdf

Clés de détermination des thecosomata (peropoda) (mollusca opisthobranchia holoplanctoniques) de méditerranée et de l'atlantique eurafricain
Provedor de dados: 5
Autores: Rampal, Jeannine.
A double identification key is presented. The first one discusses all the Thecosomata of the Mediterranean sea and the Eurafrican Atlantic ocean. The second one discusses bilateral symetric Mediterranean Thecosomata without shells. Additionnaly, the main other Thecosomata groups from the rest of the World are presented.
Tipo: Text
Palavras-chave: Mediterranean sea; Determination key; Shell; Pteropoda.
Ano: 1973
URL: http://archimer.ifremer.fr/doc/1973/publication-2149.pdf

Mitochondrial Genetic Characterization Of Bluefin Tuna (Thunnus Thynnus) From Three Mediterranean (Libya, Malta, Tunisia); And One Atlantic Locations (Gulf Of Cadiz).
Provedor de dados: 20
Autores: Farrugia, A.F.; Pla, C.; Viñas, J.; Tawil, M.Y.; Hattour, A.; de la Serna, J.M.
None of the previous genetic analysis found significant differences within the Mediterranean. However, a more exhaustive analysis is needed inside this sea. In this sense, we have analyzed the mitochondrial control region sequence variability of three Mediterranean locations: Libya (n = 22), Tunisia (n = 23) and Malta (n = 12). Additionally a sample from the Gulf of Cadiz (n = 24) in the East Atlantic Ocean was also included in the study. The AMOVA analysis revealed slightly (Fst = 0.013) but significative genetic differences (P &lt; 0.000) for the Malta location, probably due to its small sample size (n = 12). In the other hand, when this location is removed from the analysis, no differences where found among the three remaining location (Fst = 0,005; P =...
Tipo: Journal Contribution
Palavras-chave: Atlantic ocean; Mitochondrial DNA; Bluefin tuna; Sequencing; Genetic characterization; Mediterranean sea; Tuna fisheries.
Ano: 2003
URL: http://hdl.handle.net/1834/792