Blar i forfatter "Olsen, Leonore"

Viser treff 1-5 av 5

    • Alternative bait trials in the Barents Sea snow crab fishery 

      Araya-Schmidt, Tomas; Olsen, Leonore; Rindahl, Lasse; Larsen, Roger B.; Winger, Paul D. (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-05-13)
      Commercial harvesting of snow crab (<i>Chionoecetes opilio</i>) in the Barents Sea started in 2012 by Norwegian fishing vessels. This new fishery has significant bait requirements, representing an emerging conservation challenge. In this study, we evaluate the performance of five alternative (natural) baits manufactured from the waste stream of existing and sustainably managed harp seal (<i>Pagophilus ...

    • Baited pots as an alternative fishing gear in the Norwegian fishery for Atlantic cod (Gadus morhua) 

      Olsen, Leonore (Master thesis; Mastergradsoppgave, 2014-05-14)
      The main objective of this thesis has been to record the degree of efficiency in two different types of pot designs, both constructed for catching cod (Gadus morhua). The two types of technologies were a Canadian cod pot developed by Centre for Sustainable Aquatic Resources (CSAR) at the Fisheries and Marine Institute of Memorial University of Newfoundland Canada and a Norwegian two-chamber pot ...

    • Combination of a sorting grid and a square mesh panel to optimize size selection in the North-East Arctic cod (Gadus morhua) and redfish (Sebastes spp.) trawl fisheries 

      Sistiaga, Manu Berrondo; Herrmann, Bent; Grimaldo, Eduardo; Larsen, Roger B.; Olsen, Leonore; Brinkhof, Jesse; Tatone, Ivan (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-12-27)
      Sorting grids and square mesh panels are the two most-applied technical devices to supplement codend size- and species-selection in demer- sal trawls. In the Barents Sea gadoid fishery, the compulsory size-selectivity system comprises a mesh section with a sorting grid followed by a diamond mesh codend. We tested the size-selective performance of a new sorting section that comprised a sorting grid ...

    • Comparison of fishing efficiency between biodegradable PBSAT gillnets and conventional nylon (PA) gillnets 

      Grimaldo, Eduardo; Herrmann, Bent; Su, Biao; Føre, Heidi Moe; Vollstad, Jørgen; Olsen, Leonore; Larsen, Roger B.; Tatone, Ivan (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-01-19)
      Gillnets made of a new biodegradable resin (polybutylene succinate co-adipate-co-terephthalate (PBSAT) were tested under commercial fishing conditions to compare their fishing performance with that of conventional nylon (PA) nets. The relative catch efficiency between the two gillnet 15 types was evaluated over the entire winter fishing season for cod (<i>Gadus morhua</i>) in northern Norway. The ...

    • Size selectivity and length-dependent escape behaviour of haddock in a sorting device combining a grid and a square mesh panel 

      Herrmann, Bent; Sistiaga, Manu Berrondo; Grimaldo, Eduardo; Larsen, Roger B.; Olsen, Leonore; Brinkhof, Jesse; Tatone, Ivan (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-10-04)
      Size selectivity of a new sorting section combining a sorting grid and a square mesh panel was tested for haddock (Melanogrammus aeglefinus) in the Barents Sea demersal trawl fishery. Sampling data for a wide size range enabled investigating the selection process for this species in detail, both for the grid and the square mesh panel. Contrary to earlier studies modelling size selectivity for grids ...