Blar i forfatter "Ramasco, Virginie"

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    • Bioglider: an integrated glider solution for enhancing environmental knowledge 

      Poncon, Yves; Mortier, Laurent; Picheral, Marc; Fitzek, Peer; Hayes, Dan; Abdi, Ehsan; Zdroik, Jakub; Beszczynska-Möller, Agnieszka; Coindat, Jerome; Dunn, Muriel Barbara; Ramasco, Virginie; Thorstensen, Morten; Camus, Lionel; Priou, Pierre; Basedow, Sünnje Linnéa; Pedersen, Geir; Arbi, Tarak; Geller, Benoit (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-12-11)
      This paper presents a technological solution for the observation and monitoring of the marine ecosystem. Three complementary devices, one optic imaging and one scientific acoustic instrument as well as one acoustic communication modem, have been integrated on glider platforms, providing qualitative and quantitative zooplankton and fish ecology observations, which are especially relevant in Nordic ...

    • Habitat use and feeding behaviour of harbour seals (Phoca vitulina) in Vesterålen 

      Ramasco, Virginie (Master thesis; Mastergradsoppgave, 2008-05-28)
      A pilot project was carried out by the Institute of Marine Research (IMR) to test the functionality of GPS phone tags (by SMRU) on harbour seals (Phoca vitulina) in the Vesterålen archipelago, Norway. Acoustic surveys were performed to investigate the abundance of fish in these waters and scat sampling was used to assess the diet composition of the seal population inhabiting the area. Five juvenile ...

    • The intensity of horizontal and vertical search in a diving forager the harbour seal 

      Ramasco, Virginie; Barraquand, Frédéric; Biuw, Martin; McConnell, Bernie J.; Nilssen, Kjell Tormod (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-05-27)
      <p>Background: Free ranging foraging animals can vary their searching intensity in response to the profitability of the environment by modifying their movements. Marine diving animals forage in a three dimensional space and searching intensity can be varied in both the horizontal and vertical planes. Therefore understanding the relationship between the allocation of searching effort in these two ...

    • Spatial and temporal patterns of foraging of harbour seals (Phoca vitulina) in Porsangerfjord: from behavioural interpretation to resource selection. 

      Ramasco, Virginie (Doctoral thesis; Doktorgradsavhandling, 2015-09-24)
      The coastal cod stock of the Porsangerfjord has drastically declined in the 80’s and never fully recovered since. A population of harbour seals, known to be resident in the fjord all year round, has been hypothesised to act as predator-pit for cod in the area, affecting its lack of recovery. In order to understand the role of these seals in this local marine ecosystem, their foraging behaviour ...