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28 Research products, page 1 of 3

  • European Marine Science
  • Other research products
  • Other ORP type
  • Mémoires en Sciences de l'Information et de la Communication
  • HAL-Rennes 1

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  • Other research product . Other ORP type . 2012
    French
    Authors: 
    Le Bail, Pierre-Yves; Bugeon, Jérôme; Chemineau, Philippe; Dameron, Olivier; Fatet, Alice; Hue, Isabelle; Hurtaud, Catherine; Joret, Léa; Salaun, Marie-Christine; Park, C.; +4 more
    Publisher: HAL CCSD
    Country: France
    Project: EC | AQUAEXCEL (262336)

    il s'agit d'un type de produit dont les métadonnées ne correspondent pas aux métadonnées attendues dans les autres types de produit : SOFTWARE; absent

  • English
    Authors: 
    Lucken, Michael;
    Publisher: HAL CCSD
    Country: France

    Michael Lucken est un historien et historien de l’art français. Enseignant à l’Inalco depuis 1998, il est nommé en 2010 membre de l’Institut Universitaire de France. Il réalise à compter de cette date plusieurs missions en Asie de l’Est et dans le Pacifique dans le but de documenter les monuments et lieux de mémoire de la Seconde Guerre mondiale dans cette région du monde. Il est l’auteur, entre autres, de 1945-Hiroshima : les images-sources (Hermann, 2008) et Les Japonais et la guerre, 1937-1952 (Fayard, 2013).; Débris d'un bombardier japonais, en service de 1940 à 1945.

  • English
    Authors: 
    Smith, Chris; Papadopoulou, Nadia; Sevastou, Katerina; Franco, Anita; Teixeira, Heliana; Piroddi, Chiara; Katsanevakis, Stelios; Fürhaupter, Karin; Beauchard, Olivier; Cochrane, Sabine,; +10 more
    Publisher: HAL CCSD
    Country: France

    WP6, Deliverable 6.1, DEVOTES Project; In managing for marine biodiversity, it is worth recognising that, whilst every species contributes to biodiversity, each contribution is not of equal importance. Some have important effects and interactions, both primary and secondary, on other components in the community and therefore by their presence or absence directly affect the biodiversity of the community as a whole. Keystone species have been defined as species that have a disproportionate effect on their environment relative to their abundance. As such, keystone species might be of particular relevance for the marine biodiversity characterisation within the assessment of Good Environmental Status (GEnS), for the Marine Strategy Framework Directive (MSFD).The DEVOTES Keystone Catalogue and associated deliverable document is a review of potential keystone species of the different European marine habitats. The catalogue has 844 individual entries, which includes 210 distinct species and 19 groups classified by major habitat in the Baltic Sea, North East Atlantic, Mediterranean, Black Sea (EU Regional Seas) and Norwegian Sea (Non-­‐EU Sea). The catalogue and the report make use/cite 164 and 204 sources respectively. The keystones in the catalogue are indicated by models, by use as indicators, by published work (e.g. on traits and interactions with other species), and by expert opinion based on understanding of systems and roles of species/groups. A total of 74 species were considered to act as keystone predators, 79 as keystone engineers, 66 as keystone habitat forming species, while a few were thought of having multiple roles in their marine ecosystems. Benthic invertebrates accounted for 50% of the reported keystone species/groups, while macroalgae contributed 17% and fish12%. Angiosperms were consistently put forward as keystone habitat forming and engineering species in all areas. A significant number of keystones were invasive alien species.Only one keystone, the bivalve Mya arenaria, was common to all four EU regional seas. The Mediterranean Sea had the largest number of potential keystones (56% of the entries) with the least in the Norwegian Sea. There were very few keystones in deep waters (Bathyal-­‐Abyssal, 200+ m), with most reported in sublittoral shallow and shelf seabeds or for pelagic species in marine waters with few in reduced/variable salinity waters. The gaps in coverage and expertise in the catalogue are analysed at the habitat and sea level, within the MSFD biodiversity component groups and in light of knowledge and outputs from ecosystem models (Ecopath with Ecosim).The understanding of keystones is discussed as to when a species may be a dominant or keystone with respect to the definition term concerning ‘disproportionate abundance’, how important are the ‘disproportionate effects’ in relation to habitat formers and engineers, what separates a key predator and key prey for mid-­‐trophic range species and how context dependency makes a species a keystone. Keystone alien invasive species are reviewed and the use of keystone species model outputs investigated. In the penultimate sections of the review the current level of protection on keystone species and the possibilities for a keystone operational metric and their use in management and in GEnS assessments for the MSFD are discussed. The final section highlights the one keystone species and its interactions not covered in the catalogue but with the greatest impact on almost all marine ecosystems, Homo sapiens.

  • Other research product . Other ORP type . 2010
    Open Access English
    Authors: 
    Langlais, Michel; Latu, Guillaume; Roman, Jean; Silan, Patrick;
    Publisher: HAL CCSD
    Country: France

    Open access; International audience; This article deals with a performant parallel solution for a host-macroparasite model, both deterministic and stochastic, in a marine environment. Detailed biological phenomena are reproduced, such as spatial and temporal heterogeneities in these populations. A new version of the simulator and a new parallel algorithmic solution are presented. The interdisciplinary work presented here is at the interface of ecology, mathematics and computer science.

  • English
    Authors: 
    Caltran, Hervé; Silan, Patrick;
    Publisher: HAL CCSD
    Country: France

    17 p.; Open access; In the Vaccares lagoon (Rhône delta, Camargue, France), mullets of the species Liza ramada (Pisces, Teleostei) are parasitized by seven metazoan species, ectoparasites of gills : six Monogenea and one Copepoda. The spatial and temporal structures of this parasite community were analysed. The host migrates within this delta in the course of the seasons, and its parasites are potentially affected by the fluctuating environmental constraints. The crossed effects between the structure of the parasite infrapopulations and some environmental characteristics were studied with a co-inertia analysis. This study emphasizes the interactions between the populations structures and the environment, and their consequences on local biodiversity.

  • French
    Authors: 
    Hadouni, Leila;
    Publisher: HAL CCSD
    Country: France

    Diplôme : Master Professionnel; il s'agit d'un type de produit dont les métadonnées ne correspondent pas aux métadonnées attendues dans les autres types de produit : DISSERTATION; Over the past few years, the consumption of fresh seafood products stagnated whereas the consumption of processed seafood products increased. It's noted that fresh seafood consumers are aging while young consumers prefer processed products, easy to use or ready to consume. Fresh products do not seem to fulfil the demand intrinsically (aspect, taste, appetence attributes) and extrinsically (method of preparation, use, origin, brand, and priee). To understand the evolution of behaviour, motives and consumers' needs, the programme of research "COGEPECHE" was set up in order to better evaluate these expectations and needs. Within the framework of this program, a qualitative study: means end chain analysis is used to understand the linkages between the attributes that exist in fresh seafood product, the consequences provided by the attributes, and the personal values of consumers. Results of this analysis give an overview of consumer's behaviour and lead to some ways of valorization of fresh seafood product.; Au cours des dernières années, la consommation des produits de la mer frais a connu une stagnation alors que la consommation de produits de la mer transformés a enregistré une augmentation. On constate que les consommateurs des produits de la mer vieillissent alors que les plus jeunes consommateurs préfèrent des produits transformés faciles à utiliser ou prêts à consommer. Ces produits de la mer frais ne répondent pas toujours à la demande tant intrinsèquement (apparence, goût, appétence) qu'extrinsèquement (mode de préparation, usage, origine, marque, prix). Pour comprendre l'évolution des attentes, motivations et besoins des consommateurs, un programme de recherche « COGEPECHE » a été mis en place afin de mieux évaluer ces attentes et besoins. Dans le cadre de ce programme de recherche, une étude qualitative: chaînes moyens fins a été réalisée pour rendre comptes des liens existants entre les attributs des produits de la mer frais, les bénéfices apportés par ceux-ci (conséquences) et les valeurs individuelles des consommateurs. Les résultats de cette étude dresse un bilan du comportement des consommateurs et dégage un certain nombre de pistes de valorisation des produits de la mer frais.

  • French
    Authors: 
    Gouaux, Mélanie;
    Publisher: HAL CCSD
    Country: France

    il s'agit d'un type de produit dont les métadonnées ne correspondent pas aux métadonnées attendues dans les autres types de produit : DISSERTATION; National audience; DEUG

  • Other research product . Other ORP type . 1931
    English
    Authors: 
    (Ifpo), Institut Français du Proche-Orient; du Levant, Armée;
    Publisher: HAL CCSD
    Country: France

    13x18 cm, plaque. Notes manuscrites sur la photographie : absentes

  • French
    Authors: 
    Ory, Nicolas;
    Publisher: HAL CCSD
    Country: France

    il s'agit d'un type de produit dont les métadonnées ne correspondent pas aux métadonnées attendues dans les autres types de produit : DISSERTATION; Master; Rôle de l'autophagie dans le contrôle du métabolisme intermédiaire chez la truite arc-en-ciel (Oncorhynchus mykiss)

  • French
    Authors: 
    Urvoy, Kevin;
    Publisher: HAL CCSD
    Country: France

    il s'agit d'un type de produit dont les métadonnées ne correspondent pas aux métadonnées attendues dans les autres types de produit : DISSERTATION; Master; Effet de la teneur en méthionine de l'aliment sur les performances de croissance et la régulation du métabolisme lipidique et des défenses antioxydantes chez des géniteurs et alevins de truite arc-en-ciel (Oncorhynchus mykiss)