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| Registros recuperados: 126 | |
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| Cheminee, A.; Merigot, B.; Vanderklift, M. A.; Francour, P.. |
| Human activities facilitate coastal habitat transformation and homogenization. The spread of marine invasive species is one example. This in turn may inluence ish recruitment and the subsequent replenishment of adult assemblages. We tested habitat complexity effect on ish (Teleostei) recruitment by experimentally manipulating meadows of the habitat-forming invasive macroalga Caulerpa taxifolia (Chlorophyta). Among the fourteen ish species recorded during the experiment, only two labrids (Coris julis and Symphodus ocellatus) settled in abundance among these meadows. Patterns in the abundance of these juveniles suggested that reduced tri-dimensional meadow complexity may reduce habitat quality and result in altered habitat choices and / or differential... |
| Tipo: Text |
Palavras-chave: Mediterranean; Habitat complexity; Ish settlement; Nursery; Caulerpa; Coris; Symphodus. |
| Ano: 2016 |
URL: https://archimer.ifremer.fr/doc/00334/44564/74117.pdf |
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| Vassallo, P; Doglioli, Andrea; Rinaldi, F; Beiso, I. |
| Settled uneaten feed causes the most intense impact under sea cages, and settling velocity of the feed pellets represents a key parameter for waste dispersion models. Even if some data about physical properties of feed pellets have been published in the framework of salmonid rearing, there is a complete lack of information related to the Mediterranean Sea, as regards typical values of temperature, salinity and feed composition for Gilthead Sea Bream (Sparus aurata L.) and Sea Bass (Dicentrarchus labrax L.). In this study we try to fill this lack, determining dimensions, water adsorption properties, floating times and settling velocities of a typical growing sequence of pellets for the species mentioned above, under defined laboratory conditions reproducing... |
| Tipo: Text |
Palavras-chave: Waste dispersion; Mediterranean; Feed pellets; Water adsorption; Floating time; Settling velocity. |
| Ano: 2006 |
URL: http://archimer.ifremer.fr/doc/2006/publication-4968.pdf |
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| Oheix, Jocelyne; Coatanea, Denis. |
| Mud blisters related to the Parasite worm Polydora or to the presence of TBT in the Thau Basin waters depreciate the market value of the oysters produced in this lagoon. A solution to this problem was searched by immersing during 1 to 3 months the oysters in the open sea before being marketed, this shell improvment operation being called "affinage en mer". The objective or this study carried out over 2,5 months in automn '1991 was to quantify possible differences, biometrical or biochemical, between oyster immersed for "affinage" on bottom open-sea structures, or remained for a normal cultivation .in the Thau lagoon. No significant differences were measured, although the external aspect of shells was modified for open sea oysters. Complementary studies at... |
| Tipo: Text |
Palavras-chave: Bivalves; Crassostrea gigas; Affinage; Mer ouverte; Méditerranée; Bivalves; Crassostrea gigas; Fattening; Off-Shore; Mediterranean. |
| Ano: 1993 |
URL: http://archimer.ifremer.fr/doc/00436/54764/56214.pdf |
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| Mas, Virginie; Mulder, T.; Dennielou, Bernard; Schmidt, S.; Khripounoff, Alexis; Savoye, Bruno. |
| The Var turbidite system is a small sandy system located in the Ligurian Basin (Mediterranean Sea). It is active during present sea-level highstand and shows four types of sediment transfer processes: (1) low-density turbidity surges generated by small-scale failures (2) low-magnitude, high-frequency (yearly) hyperpycnal turbid plumes, (3) high-magnitude, less-frequent, hyperpycnal currents and (4) high-magnitude flows generated by large slope failures. These processes have different imprints on the morphology of the system. Inversely, the topography plays a role on the behaviour of these flows. The depositional and erosional architecture of the system has been investigated in detail on the basis of SAR imagery and a set of cores using an interface corer... |
| Tipo: Text |
Palavras-chave: Var; France; Gravity processes; Mediterranean; Turbidity current; Hyperpycnal; Flood. |
| Ano: 2010 |
URL: http://archimer.ifremer.fr/doc/00013/12458/11862.pdf |
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| Follesa, Maria C.; Marongiu, Martina F.; Zupa, Walter; Bellodi, Andrea; Cau, Alessandro; Cannas, Rita; Colloca, Francesco; Djurovic, Mirko; Isajlovic, Igor; Jadaud, Angelique; Manfredi, Chiara; Mulas, Antonello; Peristeraki, Panagiota; Porcu, Cristina; Ramirez-amaro, Sergio; Salmeron Jimenez, Francisca; Serena, Fabrizio; Sion, Letizia; Thasitis, Ioannis; Cau, Angelo; Carbonara, Pierluigi. |
| Thanks to the availability of the MEDITS survey data, a standardized picture of the occurrence and abundance of demersal Chondrichthyes in the northern Mediterranean has been obtained. During the spring-summer period between 2012 and 2015, 41 Chondrichthyes, including 18 sharks (5 orders and 11 families). 22 batoids (3 orders and 4 families) and 1 chimaera, were detected from several geographical sub-areas (GSAs) established by the General Fisheries Commission for the Mediterranean. Batoids had a preferential distribution on the continental shelf (10-200 m depth). while shark species were more frequent on the slope (200-800 m depth). Only three species, the Carcharhiniformes Galeus melastomus and Scyliorhinus canicida and the Torpediniformes Torpedo... |
| Tipo: Text |
Palavras-chave: Fish; Chondrichthyes; Bottom trawl surveys; Distribution; Abundance; Mediterranean. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00600/71220/69591.pdf |
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| Guillou, Alain; Lespagnol, Patrick; Ruchon, François. |
| "Small trades" refers to the body of fishing boats, excepting the trawlers, which have a trawling license and the tuna/sardine boats, which have a pelagic fishing license. The ships that fish for small pelagic fish by using a lamp are only included for the other trades they ply, if applicable. Whereas certain "small trades" work offshore, the majority of them exploit the lagoons and coastal area. The importance of the coastal areas in general, where a large number of biological and ecological processes are being developed, need no longer be demonstrated: A large part of primary and secondary production takes place in these areas, which host moreover many reproduction and nursery sites for a great many species. "Small trade" fishing is one of the main... |
| Tipo: Text |
Palavras-chave: Fleets; Surveys; Coastal fishing; Small metiers; South of France; Languedoc Roussillon; Mediterranean; Lamparo; Enquêtes; Flottilles; Pêche côtière; Petits métiers; Zones côtières; Languedoc Roussillon; Méditerranée. |
| Ano: 2002 |
URL: http://archimer.ifremer.fr/doc/2002/rapport-2286.pdf |
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| De La Pomelie, C; Paquotte, Philippe. |
| A natural endowment of three coast lines with different structures, of numerous rivers coming from mountainous regions and of different climatic conditions has enabled France to develop one of the first European aquaculture sectors in terms of volume with almost 300 000 tonnes in 1996. This development has been based on a wide range of species and on a wide range of techniques. Intensive marine fish farming has been developing during the last decade only, after many years of stagnation due to the lack of reliable technology for species adapted to French climate. Techniques of production are very diverse. Although earth ponds and race-ways are used only by 25% of the marine fish farms, this technique accounts for 40% of the production. On the contrary, many... |
| Tipo: Text |
Palavras-chave: Technology; Cages; Offshore; Mediterranean; Aquaculture; SEM; Technologie; Cages; Offshore; Méditerranée; Aquaculture. |
| Ano: 1998 |
URL: http://archimer.ifremer.fr/doc/1998/acte-4011.pdf |
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| Harmelin-vivien, Mireille; Bodiguel, Xavier; Charmasson, Sabine; Loizeau, Veronique; Mellon, Capucine; Tronczynski, Jacek; Cossa, Daniel. |
| Consumption of marine organisms represents one of the main exposure sources of contaminants for human populations. To obtain a global view of the contamination in commercial fish in the NW Mediterranean Sea, we analysed four types of priority contaminants (PCBs, PBDEs, Hg and Cs-137) in the European hake, Merluccius merluccius, from the Gulf of Lions in relation with organism's trophic level (delta N-15). All contaminants presented a significant increase in concentration in hake muscle with trophic level. However, obvious differences between contaminants were evidenced. Biomagnification factors (BMF and FWMF) along the hake food web were higher for Hg and CB-153 than for BDE-47 and Cs-137, and increase in contaminant concentration with trophic level... |
| Tipo: Text |
Palavras-chave: Persistent organic pollutants; Mercury; Cs-137; Merluccius merluccius; Mediterranean. |
| Ano: 2012 |
URL: http://archimer.ifremer.fr/doc/00085/19583/17484.pdf |
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| García-ruiz, Cristina; Hidalgo, Manuel; Carpentieri, Paolo; Fernandez-arcaya, Ulla; Gaudio, Palma; González, Maria; Jadaud, Angelique; Mulas, Antonello; Peristeraki, Panagiota; Rueda, José Luis; Vitale, Sergio; D’onghia, Gianfranco. |
| The present study describes for the first time the spatial distribution of five macrourid species throughout the Mediterranean Sea and analyses depth, geographical and time-related trends regarding their abundance, biomass and mean fish weight. The data were collected as part of the MEDITS annual bottom trawl survey carried out by several European Mediterranean countries from 1994 to 2015, using the same standardized gear and sampling protocol. The most represented species in terms of abundance and biomass was Coelorinchus caelorhincus. The bathymetric trend was different for each species. The shallowest occurring species was C. caelorhincus, followed by Hymenocephalus italicus and Nezumia sclerorhynchus, while Nezumia aequalis and Trachyrincus scabrus... |
| Tipo: Text |
Palavras-chave: Macrourids; Mediterranean; Bathymetric distribution; Geographic distribution; Spatio-temporal trends; Deep-sea; Trawl survey. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00489/60057/63337.pdf |
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| Cresson, Pierre; Bouchoucha, Marc; Morat, Fabien; Miralles, Francoise; Chavanon, Fabienne; Loizeau, Veronique; Cossa, Daniel. |
| Chemical contamination levels and stable isotope ratios provide integrated information about contaminant exposure, trophic position and also biological and environmental influences on marine organisms. By combining these approaches with otolith shape analyses, the aim of the present study was to document the spatial variability of Hg and PCB contamination of the European hake (Merluccius merluccius) in the French Mediterranean, hypothesizing that local contaminant sources, environmental conditions and biological specificities lead to site-specific contamination patterns. High Hg concentrations discriminated Corsica (average: 1.36 ± 0.80 μg g− 1 dm) from the Gulf of Lions (average values < 0.5 μg g− 1 dm), where Rhône River input caused high PCB burdens.... |
| Tipo: Text |
Palavras-chave: Hg; Mediterranean; Merluccius merluccius; Multiple ecotracers; PCB. |
| Ano: 2015 |
URL: http://archimer.ifremer.fr/doc/00270/38155/36309.pdf |
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| Guidetti, Paolo; Bussotti, Simona. |
| The fish fauna of a shallow meadow composed by the seagrasses Cymodocea nodosa and Zostera noltii was studied in the Gulf of Olbia (NE Sardinia, Italy; Western Mediterranean). Visual censuses were conducted monthly from August 1995 to August 1996. Environmental variables for water temperature, salinity and seagrass shoot density were collected on each sampling occasion. A total of 23 fish species from eight families were recorded. Planktivorous species (Atherinids) numerically dominated the fish community, followed by necto-benthic fish, chiefly Labrids and Sparids. There was no discernible trend in total fish density. Species richness, diversity, evenness and density of necto-benthic species, instead, displayed a distinct seasonal pattern, higher Values... |
| Tipo: Text |
Palavras-chave: Ichtyofaune; Phanérogames marines; Variations seasonnières; Mediterranée; Fish fauna; Seagrasses; Seasonal variations; Mediterranean. |
| Ano: 2000 |
URL: http://archimer.ifremer.fr/doc/00323/43373/42838.pdf |
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| Cresson, Pierre; Bouchoucha, Marc; Miralles, F.; Elleboode, Romain; Mahe, Kelig; Marusczak, Nicolas; Thebault, Herve; Cossa, Daniel. |
| Mercury (Hg) is one of the main chemicals currently altering Mediterranean ecosystems. Red mullet (Mullus barbatus and M. surmuletus) have been widely used as quantitative bio-indicators of chemical contamination. In this study, we reassess the ability of these species to be used as efficient bio-indicators of Hg contamination by monitoring during 18 months Hg concentrations in muscle tissue of mullet sampled from 5 French Mediterranean coastal areas. Mean concentrations ranged between 0.23 and 0.78 μg g−1 dry mass for both species. Values were consistent with expected contamination patterns of all sites except Corsica. Results confirmed that red mullets are efficient bio-indicators of Hg contamination. Nevertheless, the observed variability in Hg... |
| Tipo: Text |
Palavras-chave: Mercury; Bio-indicator; Fish; Mullus spp.; Mediterranean. |
| Ano: 2015 |
URL: https://archimer.ifremer.fr/doc/00244/35514/34083.pdf |
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| Samartin, Stephanie; Heiri, Oliver; Kaltenrieder, Petra; Kühl, Norbert; Tinner, Willy. |
| Vegetation and climate during the last ice age and the Last Glacial Maximum (LGM, similar to 23,000-19,000 cal BP) were considerably different than during the current interglacial (Holocene). Cold climatic conditions and growing ice-sheets during the last glaciation radically reduced forest extent in Europe to a restricted number of so-called "refugia", mostly located in the southern part of the continent. On the basis of paleobotanical analyses the Euganian Hills (Colli Euganei) in northeastern Italy have previously been proposed as one of the northernmost refugia of temperate trees (e.g. deciduous Quercus, Tilia, Ulmus, Fraxinus excelsior, Acer, Abies alba, Fagus sylvatica, Carpinus and Castanea) in Europe. In this study we provide the first... |
| Tipo: Text |
Palavras-chave: Chironomids; Refugia; Vegetation; Northern Italy; Mediterranean; Climate; Last Glacial; LGM; Heinrich events; Paleoecology; Paleoclimatology. |
| Ano: 2016 |
URL: https://archimer.ifremer.fr/doc/00421/53234/54773.pdf |
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| Registros recuperados: 126 | |
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