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| Registros recuperados: 26.605 | |
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| Le Foll, Anne. |
| The study of the crab Cancer pagurus , along the Brittany coast, has revealed new information about its movements, growth and reproduction. The 1439 crab tagging has been effected either on land using the Edwards technique "suture-tag" or onboard using a similar technique to the Gundersen method of "toggle-tag". The results confirm that males are relatively sedentary, the females migrate more. To estimate growth, the author used the "capture-recapture" method and the results from crab rearing. It appeared that the molt increment is not constant and generally, so the molt frequency, it percentage decreases when the size increases. |
| Tipo: Text |
Palavras-chave: Marine crustaceans; Sexual reproduction; Tagging; Growth; Migrations. |
| Ano: 1984 |
URL: http://archimer.ifremer.fr/doc/1984/publication-1785.pdf |
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| Marques, J C; Nogueira, A. |
| A benthic sampling programme was carried out in 1985/1986, in winter and summer, in order to characterize the intertidal community structure in the Mondego Estuary (Portugal). Echinogammarus marinus (Amphipoda, Gammaridae) was considered a key species in the algal-covered areas, and was particularly associated with Fucus spp. A study of its life cycle, population dynamics and production was therefore carried out. The results reinforce the generalized notion that estuaries are highly productive systems, and reflect the important role of Amphipods in the productivity of habitats colonized by them. |
| Tipo: Text |
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| Ano: 1991 |
URL: http://archimer.ifremer.fr/doc/00268/37877/35958.pdf |
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| La Violette, Pe; Lacombe, H. |
| Ship data collected in the 1960s and recent data from ship, aircraft and satellites indicate that the flow in the Strait of Gibraltar does not move in the form of continuous currents but as tidal-induced pulses. A descriptive model based on these data is presented. The model indicates that the pulses are a result of increases in the speed of the tidal streams as they encounter the constrictions of the regional bathymetry (especially the Camarinal Sill and between the Camarinal Sill and Tarifa). Periodic increases modify the regional flow so that during each tidal cycle, the eastward-flowing surface Atlantic water and westward-flowing deep Mediterranean water are alternately emitted as large pulses into the Mediterranean Sea (Atlantic water) and Atlantic... |
| Tipo: Text |
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| Ano: 1988 |
URL: http://archimer.ifremer.fr/doc/00267/37794/35875.pdf |
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| Garry, Pascal; Le Saux, Jean-claude; Hervio Heath, Dominique; Le Guyader, Soizick. |
| La Microbiologie sanitaire, thème de recherche fédérant notre laboratoire, nous a permis d’obtenir des résultats intéressants qui sont présentés dans ce rapport et ont été valorisés par des publications ou la participation des membres de l’équipe à des congrès scientifiques. Cette thématique nous permet surtout des collaborations variées au travers des projets de recherche portés par l’équipe. L’élargissement de nos activités en intégrant la coordination REMI constitue un point important à souligner complétant nos actions de référence, d’expertise et de recherche. L’attrait et l’intérêt scientifique suscité par la microbiologie sanitaire a été démontré par le succès rencontré par le colloque organisé à Brest en lien avec la fin du projet européen... |
| Tipo: Text |
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| Ano: 2016 |
URL: http://archimer.ifremer.fr/doc/00380/49138/49574.pdf |
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| Le Pichon, Xavier. |
| The plate tectonic hypothesis admits that the orogenic areas, where most of the mechanical energy vanishes, are the areas where the differential horizontal motions between rigid lithospheric plates occur. The success of this hypothesis relies on the fact that the aseismic deformations inside the plates are less important than the motions occurring along the seismic areas. The rigidity of the plates enables a rigorous analysis of their kinematic. This quantitative model of the evolution of the Earth is an incredible revolution in earth science. It leads to a series of new scientific processes and research involving every different field belonging to earth science. |
| Tipo: Text |
Palavras-chave: Histoire Ifremer. |
| Ano: 1970 |
URL: http://archimer.ifremer.fr/doc/1970/publication-4887.pdf |
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| Lacombe, H. |
| This introduction to the Colloquium recalls some of the outstanding features of the physical oceanography of the Mediterranean. On the basis of what is known concerning the budget of transfers and exchanges across the sea-surface and their impact on the hydrographical characters of the waters and their movements, and concerning the external conditions imposed on the sea, the author presents, the effect of the constraints imposed on the sea due to the existence of straits with sills and, primarily, the Strait of Gibraltar. |
| Tipo: Text |
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| Ano: 1988 |
URL: http://archimer.ifremer.fr/doc/00267/37792/35873.pdf |
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| Cariou-le Gall, Valerie; Blanchard, Gerard. |
| Chloropigments and carotenoids were measured by HPLC in an intertidal muddy sediment of Marennes-Oleron Bay (France). Concentrations were determined as a function of sediment depth at low tide. The analyses were carried out at monthly intervals over 1 yr. Pigment analysis indicated that the microphytobenthic community was dominated by diatoms throughout the sampling year. Chlorophyll b was not encountered at any time or depth, indicating that no input from macrophytic detritus had occurred at the sampling site. There was a large pool of phaeopigments a, of which phaeophorbides were the major forms (75%). A microphytobenthic bloom occurred between March and June during which phaeopigments significantly increased with a high proportion of phaeophorbides... |
| Tipo: Text |
Palavras-chave: Pigment; HPLC; Intertidal mudflat; Microphytobenthos; Seasonal change. |
| Ano: 1995 |
URL: http://archimer.ifremer.fr/doc/00257/36844/36666.pdf |
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| Lorance, Pascal. |
| Une évaluation de la variabilité du phénomène ciguatérique est réalisée et montre qu'aucune cartographie précise des zones ciguatériques n'est possible à cette échelle. Le rejet systématique des espèces à «risques» reste la méthode la plus sûre pour éviter des intoxications, mais il ne peut être exclus que quelques poissons appartenant à des espèces présumécs saines s'avèrent toxiques. Les rendements obtenus au cours de ces trois séries de campagnes de pêche sont présentés dans ce document ainsi que les résultats des tests comparatifs des secteurs et des saisons (sèche et humide). Une description des captures (composition spécifique, distribution des fréquences de taille des principales espèces) donne des indices qualitatifs d'une exploitation modérée sur... |
| Tipo: Text |
Palavras-chave: Pêcherie démersale; Captures; Rendements; Antilles; Saint-Martin; Saint-Barthélémy; Ciguatera. |
| Ano: 1989 |
URL: http://archimer.ifremer.fr/doc/00419/53029/53963.pdf |
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| Fromentin, Jean-marc; Ibanez, F. |
| Chronological series (1949 to 1992) of air temperature, precipitation, atmospheric pressure and wind in different parts of the French coast show evidence of important year-to-year changes, trends and cycles: seven-eight years for temperature, and around three years for precipitation and atmospheric pressure. On the scale of France, it appears that spatial heterogeneity of meteorological factors is smaller than temporal heterogeneity. New methods, such as the cumulative sums method or the envelopes of a variable reveal the interest for ecologists of essaying different numerical approaches. A comparison between climatic series and biological series of a benthic and a pelagic species is described for this purpose. |
| Tipo: Text |
Palavras-chave: METEOROLOGICAL SERIES; BIOLOGICAL SERIES; TRENDS; CYCLES; CHANGES. |
| Ano: 1994 |
URL: http://archimer.ifremer.fr/doc/00098/20891/18505.pdf |
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| Leroy, C.; Cadiou, Yvon; Delaporte, Francis. |
| Parmi les méthodes physiques ou chimiques pérmettant de mesurer la salinité de l'eau de mer, la densité est certainement la plus simple et surtout celle qui ne nécessite pas un appareillage coûteux puisqu'il suffit de disposer d'un aréomètre, d'un thermomètre et d'une éprouvette (coût entre 160 et 300 F.,selon la précision désirée). Cette méthode est peu précise mais, dans bien des cas, elle peut suffire, notamment lorsqu'on désire obtenir la salinité avec une précision comprise entre l'unité et la première décimale. La table qui suit a été établie dans ce but et il conviendra, si on désire une précision plus grande, d'utiliser une autre méthode : chlorinité ou conductivité électrique. |
| Tipo: Text |
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| Ano: 1977 |
URL: http://archimer.ifremer.fr/doc/00046/15766/13168.pdf |
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| Zappa, Christopher J.; Laxague, Nathan J.m.; Brumer, Sophia; Anderson, Steven P.. |
| The thermodynamic and emissive properties of the ocean thermal skin layer are crucial contributors to air‐sea heat flux. In order to properly observe ocean surface temperature without disturbing any delicate fluid mechanical processes, thermal infrared imaging is often used. However, wind impacting the ocean surface complicates the extraction of meaningful information from thermal imagery; this is especially true for transient forcing phenomena such as wind gusts. Here, we describe wind gust‐water surface interaction through its impact on skin layer thermal and emissive properties. Two key physical processes are identified: (1) the growth of centimeter‐scale wind waves, which increases interfacial emissivity and (2) microscale wave breaking and shear,... |
| Tipo: Text |
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| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00514/62522/66831.pdf |
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| ICES. |
| The Workshop on the Development of Quantitative Assessment Methodologies based on Life-history traits, exploitation characteristics, and other relevant parameters for data-limited stocks (WKLIFE) focuses on the provision of sound advice rules for data-limited stock (DLS) assess-ments that are within the ICES MSY framework. This ninth workshop was convened to further address the challenges to the evidence base for the provision of ICES advice with specific refer-ence to DLS. The reviewers’ report of WKLIFE VIII (ICES, 2018) was used as the basis to draft ICES technical guidance on advice rules for stocks in Categories 3 and 4 following the meeting in 2018. The draft document reflected the conclusions of the WKLIFE VIII meeting report but in order to provide... |
| Tipo: Text |
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| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00593/70530/68675.pdf |
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| Kondajii, N; Menon, N. |
| It is understood that the rate of bioaccumulation and subsequent depuration of heavy metals in marine animals is influenced by the chemical state, as well as the kinetics of transformation between different species of chemical salts dissolved in water. The Indian Brown mussel, Perna indica, was exposed to copper nitrate and chloride, individually, to analyse the rate of accumulation, depuration, oxygen uptake and filtration rates. When supplied in very low quantities, environmentally realistic concentrations, the rate of accumulation of copper nitrate and chlorides showed variations. When the animals were transferred to sea water, these two salts did not show any clear cut differences in the depuration rate. Irrespective of the previous accumulation... |
| Tipo: Text |
Palavras-chave: Perna indica; Bivalvia; Chlorides; Copper; Mussel culture; Heavy metals; Marine pollution; Accumulation; Self purification. |
| Ano: 1992 |
URL: http://archimer.ifremer.fr/doc/1992/acte-1603.pdf |
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| Huneau-salaun, A.; Staerk, K. D. C.; Mateus, A.; Lupo, Coralie; Lindberg, A.; Le Bouquin-leneveu, S.. |
| In the European Union, Meat Inspection (MI) aims to protect public health by ensuring that minimal hazardous material enters in the food chain. It also contributes to the detection and monitoring of animal diseases and welfare problems but its utility for animal surveillance has been assessed partially for some diseases only. Using the example of poultry production, we propose a complete assessment of MI as a health surveillance system. MI allows a long-term syndromic surveillance of poultry health but its contribution is lowered by a lack of data standardization, analysis and reporting. In addition, the probability of case detection for 20 diseases and welfare conditions was quantified using a scenario tree modelling approach, with input data based on... |
| Tipo: Text |
Palavras-chave: Animal welfare; Disease surveillance; Meat Inspection; Poultry. |
| Ano: 2015 |
URL: http://archimer.ifremer.fr/doc/00273/38472/37200.pdf |
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| Lorance, Pascal; Pawlowski, Lionel; Trenkel, Verena. |
| A database of tallybooks, from skippers' own logbooks, provided by the French industry involved in deep-water fishing to the west of the British Isles was used to standardise blue ling Landings per Unit of Effort (LPUEs). The data covered the years 1992-2008 with more extensive data for the period 2000-2007. For each haul, landings by species, tow duration, depth and location were reported. Compared to EU logbooks, this database is on a haul by haul basis instead of being aggregated by fishing sub-trips combining hauls from the same day, ICES rectangle and gear. Moreover, it includes depth, which is a major factor for catch rates in deepwater fisheries. LPUEs were estimated from Generalised Additive Models (GAMs) with depth, vessel, statistical rectangle... |
| Tipo: Text |
Palavras-chave: Molva dypterygia; Abundance indices; Fishing strategy; Tweedie distribution. |
| Ano: 2009 |
URL: http://archimer.ifremer.fr/doc/00102/21330/18953.pdf |
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| Moal, Jeanne; Samain, Jean-francois; Le Coz, Jean-rene; Daniel, Jean-yves. |
| Crassostrea gigas oysters cultivated in Marennes-Oleron Bay (France), face seasonal variations in the environment: salinity, turbidity, phytoplanktonic production, and the tidal rhythm of emersion. The oysters are maintained at different depths to reduce competition for space (e.g. by settlement of mussel spat). The physiological responses of two groups of oysters to different periods of emersion were studied using a seasonal sampling strategy: one group was on a flat part of the area, and the effect of emersion was studied in a short time survey (less than three hours emersion at low tide); the other was located in a very narrow place with a steep slope. This group was subdivided into three, according to bathymetric position, to study the long term effect... |
| Tipo: Text |
Palavras-chave: Crassostrea gigas; Physiology; Emersion; AEC; Digestive enzimes; Marennes-Oleron Bay. |
| Ano: 1989 |
URL: http://archimer.ifremer.fr/doc/00038/14885/12208.pdf |
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| Registros recuperados: 26.605 | |
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