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| Registros recuperados: 126 | |
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| Rogerson, M.; Colmenero-hidalgo, E.; Levine, R. C.; Rohling, E. J.; Voelker, A. H. L.; Bigg, G. R.; Schoenfeld, J.; Cacho, I.; Sierro, F. J.; Lowemark, L.; Reguera, M. I.; De Abreu, L.; Garrick, K.. |
| The Atlantic-Mediterranean exchange of water at Gibraltar represents a significant heat and freshwater sink for the North Atlantic and is a major control on the heat, salt and freshwater budgets of the Mediterranean Sea. Consequently, an understanding of the response of the exchange system to external changes is vital to a full comprehension of the hydrographic responses in both ocean basins. Here, we use a synthesis of empirical (oxygen isotope, planktonic foraminiferal assemblage) and modeling (analytical and general circulation) approaches to investigate the response of the Gibraltar Exchange system to Atlantic freshening during Heinrich Stadials (HSs). HSs display relatively flat W-E surface hydrographic gradients more comparable to the Late Holocene... |
| Tipo: Text |
Palavras-chave: Atlantic; Mediterranean; Gibraltar; Heinrich Event; Last Glacial Maximum; Mediterranean Outflow. |
| Ano: 2010 |
URL: https://archimer.ifremer.fr/doc/00231/34189/32775.pdf |
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| Keller, Stefanie; Quetglas, Antoni; Puerta, Patricia; Bitetto, Isabella; Casciaro, Loredana; Cuccu, Danila; Esteban, Antonio; Garcia, Cristina; Garofalo, Germana; Guijarro, Beatriz; Josephides, Marios; Jadaud, Angelique; Lefkaditou, Evgenia; Maiorano, Porzia; Manfredi, Chiara; Marceta, Bojan; Micallef, Reno; Peristeraki, Panagiota; Relini, Giulio; Sartor, Paolo; Spedicato, Maria Teresa; Tserpes, George; Hidalgo, Manuel. |
| The Mediterranean Sea is characterized by large scale gradients of temperature, productivity and salinity, in addition to pronounced mesoscale differences. Such a heterogeneous system is expected to shape the population dynamics of marine species. On the other hand, prevailing environmental and climatic conditions at whole basin scale may force spatially distant populations to fluctuate in synchrony. Cephalopods are excellent case studies to test these hypotheses owing to their high sensitivity to environmental conditions. Data of two cephalopod species with contrasting life histories (benthic octopus vs nectobenthic squid), obtained from scientific surveys carried out throughout the Mediterranean during the last 20 years were analyzed. The objectives of... |
| Tipo: Text |
Palavras-chave: Cephalopods; Mediterranean; MEDITS; Dynamic factor analysis; Synchrony; Octopus vulgaris; Illex coindetii. |
| Ano: 2017 |
URL: http://archimer.ifremer.fr/doc/00371/48207/48320.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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| Carbonara, Pierluigi; Zupa, Walter; Anastasopoulou, Aikaterini; Bellodi, Andrea; Bitetto, Isabella; Charilaou, Charis; Chatzispyrou, Archontia; Elleboode, Romain; Esteban, Antonio; Follesa, Maria Cristina; Isajlovic, Igor; Jadaud, Angelique; Garcia-ruiz, Cristina; Giannakaki, Amalia; Guijarro, Beatriz; Kiparissis, Sotiris Elias; Ligas, Alessandro; Mahe, Kelig; Massaro, Andrea; Medvesek, Damir; Mytilineou, Chryssi; Ordines, Francesc; Pesci, Paola; Porcu, Cristina; Peristeraki, Panagiota; Thasitis, Ioannis; Torres, Pedro; Spedicato, Maria Teresa; Tursi, Angelo; Sion, Letizia. |
| The uncertainty in age estimation by otolith reading may be at the root of the large variability in red mullet (Mullus barbatus) growth models in the Mediterranean. In the MEDITS survey, red mullet age data are produced following the same sampling protocol and otolith reading methodology. However, ageing is assigned using different interpretation schemes, including variations in theoretical birthdate and number of false rings considered, in addition to differences in the experience level of readers. The present work analysed the influence of these variations and the geographical location of sampling on red mullet ageing using a multivariate approach (principal component analysis). Reader experience was the most important parameter correlated with the... |
| Tipo: Text |
Palavras-chave: Mullus barbatus; Age variability; MEDITS; Mediterranean; Reader effect; False rings; Date of birth. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00591/70320/68356.pdf |
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| Cresson, Pierre; Ruitton, Sandrine; Harmelin-vivien, Mireille. |
| Suspension-feeders predominate in the vast majority of the coastal marine benthic ecosystems, with several species co-occurring at low spatial scale. Understanding how these species cope with competition for trophic resources has been the core of numerous studies, mostly in coastal shallow systems where food supplies are diverse and abundant. Oligotrophic systems have received less attention. The aim of the present study was thus to investigate the trophic relationships established between 9 suspension feeders collected in an oligotrophic zone (Bay of Marseille, French Mediterranean). Species displayed similar isotopic ratios, consistently with the use of one main source, identified as nanophytoplankton and diazotrophic bacteria as the δ15N values were... |
| Tipo: Text |
Palavras-chave: Suspension feeders; Isotopic niche; Mediterranean; Oligotrophy; Resource sharing mechanisms. |
| Ano: 2016 |
URL: http://archimer.ifremer.fr/doc/00301/41203/40363.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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| Gentil, Mathieu; Many, Gaël; Durrieu De Madron, Xavier; Cauchy, Pierre; Pairaud, Ivane; Testor, Pierre; Verney, Romaric; Bourrin, François. |
| The recent integration of Acoustic Doppler Current Profilers (ADCPs) onto underwater gliders changes the way current and sediment dynamics in the coastal zone can be monitored. Their endurance and ability to measure in all weather conditions increases the probability of capturing sporadic meteorological events, such as storms and floods, which are key elements of sediment dynamics. We used a Slocum glider equipped with a CTD (Conductivity, Temperature, Depth), an optical payload, and an RDI 600 kHz phased array ADCP. Two deployments were carried out during two contrasting periods of the year in the Rhone River region of freshwater influence (ROFI). Coastal absolute currents were reconstructed using the shear method and bottom tracking measurements, and... |
| Tipo: Text |
Palavras-chave: Glider; Optics; Acoustics; Satellite; Coastal hydrodynamics; Suspended particulate matter; Particulate fluxes; Gulf of Lions; Mediterranean. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00648/76039/76962.pdf |
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| Mellon-duval, Capucine; De Pontual, Helene; Metral, Luisa; Quemener, Loic. |
| Growth of European hake was estimated from the results of a conventional tagging study in the Gulf of Lions, the first tagging experiment to have been undertaken on the species in Mediterranean waters. In all, 4277 hake 15–40 cm long were tagged and released on the inshore fishing grounds during spring 2006. The overall recapture rate was 6.5% and times-at-liberty ranged from 1 to 717 d. Growth rate in hake varied with size and sex. The estimated growth parameter (von Bertalanffy k) was estimated as double previously published values based on size frequency distribution in the area. Compared with recent growth parameters derived from the tagging experiments in the Bay of Biscay, k was estimated to be slightly lower in the Gulf of Lions. With this faster... |
| Tipo: Text |
Palavras-chave: Age estimation; European hake; Growth; Mediterranean; Tagging. |
| Ano: 2010 |
URL: http://archimer.ifremer.fr/doc/00000/11134/11532.pdf |
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| Boudinar, A. S.; Chaoui, L.; Mahe, Kelig; Cachera, M.; Kara, M. H.. |
| Somatic morphology and otolith shape were used to discriminate four samples of Atherina boyeri from three different habitats: Mellah lagoon (n = 269), Annaba Gulf (144 punctuated and 194 unpunctuated individuals) and Ziama inlet (n = 147) in eastern Algeria. For each individual, somatic morphology was described with 13 metrics and eight meristic measurements, while the otolith contour shape of 452 individuals from the three habitats was analysed using Fourier analysis. Then, two discriminant analyses, one using the 13 metric measurements and the other using Fourier descriptors, were used in order to discriminate populations of A. boyeri. The results of the discriminant analyses based on the two methods were similar, and showed that this species could be... |
| Tipo: Text |
Palavras-chave: Sand smelt; Otoliths; Morphology; Mediterranean; Algeria. |
| Ano: 2015 |
URL: http://archimer.ifremer.fr/doc/00270/38079/36303.pdf |
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| Essallami, L.; Sicre, M. A.; Kallel, N.; Labeyrie, L.; Siani, G.. |
| Sea surface temperatures were reconstructed over the last 30,000 years from alkenone paleothermometry (SST-(alk)) and planktonic foraminifera assemblages using the Modern Analog Technique (MAT) (SST-(foram)) along two cores of the Mediterranean Sea: MD84-632 (Levantine basin) and MD04-2797 (Siculo-Tunisian Strait). Oxygen isotope of planktonic foraminifera G. bulloides for core MD04-2797 and G. ruber for core MD84-632 were also determined. SST-alk in the Levantine basin indicate colder values at the Last Glacial Maximum (LGM) (similar to 14 degrees C) than earlier established from MAT, and a cooling amplitude of 6 degrees-7 degrees C, comparable to the central Mediterranean Sea. Climatic events such as the Younger Dryas (YD) and Heinrich events 1 and 2 (H1... |
| Tipo: Text |
Palavras-chave: Paleoclimate; Glacial; Mediterranean; Alkenones; Foraminifera; Marine core. |
| Ano: 2007 |
URL: https://archimer.ifremer.fr/doc/00208/31954/30378.pdf |
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| Peristeraki, Panagiota; Bitetto, Isabella; Carbonara, Pierluigi; Carlucci, Roberto; Certain, Gregoire; De Carlo, Francesco; Gristina, Michele; Kamidis, Nikos; Pesci, Paola; Stagioni, Marco; Valls, María; Tserpes, George. |
| Mean temperature (MTC) and mean trophic level (MTL) spatiotemporal patterns of MEDITS survey catches were examined in 13 geographic statistical areas (GSAs) of the Mediterranean between 1994 and 2016. The study aimed to detect changes in the demersal community structure related to anthropogenic impacts. A generalized additive modelling approach was used to examine the effects of year and GSA on the MTC and MTL indexes and on bottom temperature by haul. For the MTC index, the year was significant only in 4 GSAs, while for MTL it was significant in 5. Higher MTC values were observed in central and eastern areas. Bottom temperature increased after 2010, and also from west to east and from north to south. Our results indicate that the recently observed... |
| Tipo: Text |
Palavras-chave: Mean temperature of the catch; Trophic level; Bottom temperature; Trends; Mediterranean; Fishing pressure; Sea warming; Climate change. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00489/60054/63332.pdf |
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| Achterberg, C. van; Argaman, Q.. |
| The new genus Kollasmosoma (Braconidae: Neoneurinae; type species: Elasmosoma platamonense Huddleston, 1976, from the Mediterranean area) is described and illustrated. New combinations are: Kollasmosoma cubiceps (Huddleston, 1976), K. marikovskii (Tobias, 1986), and K. platamonense (Huddleston, 1976). A key to the genera of Neoneurinae is added, and the type species of the known genera are illustrated. |
| Tipo: Article / Letter to the editor |
Palavras-chave: Braconidae; Neoneurinae; Kollasmosoma; Palaearctic; Mediterranean; Key; 42.75. |
| Ano: 1993 |
URL: http://www.repository.naturalis.nl/record/319042 |
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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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| Registros recuperados: 126 | |
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