Blar i ICES CM documents authored by IMR scientists (1949-2011) på forfatter "Helle, Kristin"
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A framework for improving accuracy in fisheries data used in stock assessments
Pennington, Michael; Vigneau, Joel; Helle, Kristin; Vølstad, Jon Helge (ICES CM documents;2008/N:27, Working paper, 2009) -
Current patterns during pelagic stages determine interannual variability in length-at-age of juvenile Arcto-Norwegian cod
Ottersen, Geir; Helle, Kristin; Bogstad, Bjarte (ICES CM documents, Working paper, 2001) -
Do two-year-old Arcto-Norwegian cod remain in the area where they settled?
Helle, Kristin (ICES CM documents, Working paper, 2001) -
Electronic catch registration onboard commercial fishing vessels for commercial and scientific use
Gundersen, Agnes C.; Dyb, Jan Erik; Boje, Jesper; Hjörleifsson, Einar; Helle, Kristin (ICES CM documents;2009/L:16, Working paper, 2009)In assessment and management of marine fish resources, representative data of statistically good quality describing the actual catch are lacking for many fisheries. Even for the most studied fisheries in the north Atlantic, ... -
Estimates of effort, CPUE, and mean length for the Norwegian commercial catch of ling, blue ling and tusk
Helle, Kristin; Pennington, Michael (Working paper, 2010) -
An evaluation of recruitment indices for Northeast Arctic cod (Gadus morhua L.)
Helle, Kristin; Bogstad, Bjarte; Marshall, C. Tara; Michalsen, Kathrine; Ottersen, Geir; Pennington, Michael (ICES CM documents, Working paper, 1999)Indices of the abundance of Northeast Arctic cod (Gadus morhua L.) for various life stages were compared in order to determine the earliest stage at .which year-class strength is established. The indices considered are: ... -
Fishery changes and implications - need for a wider approach to address socioeconomical effects in fisheries management
Gundersen, Agnes C.; Helle, Kristin; Nystrand, Bjørn Tore; Oterhals, Oddmund; Kjerstad, Margareth; Yttredal, Else Ragn; Herse, Øyvind (ICES CM Documents;2010/M:27, Conference object, 2010)Probabilistic maturation reaction norms (PMRN) were used to investigate changes in the maturation of sardine cohorts and to discuss whether genetic effects, environmental effects or both are plausible explanations of ... -
Prey selection of early juvenile cod (Gadus morhua L.) in the Barents Sea
Helle, Kristin (ICES CM documents, Conference object, 2006) -
Some environmental factors that influence the growth of Arcto-Norwegian cod from the early juvenile to the adult stage
Helle, Kristin; Bogstad, Bjarte; Ottersen, Geir; Pennington, Michael (ICES CM documents, Working paper, 2000)A high growth rate for Arcto-Norwegian cod (Gadus morhua L.) in the Barents Sea and adjacent areas from the larval stage to the 0-group stage enhances survival and ultimately recruitment to the fishery. However, it appears ... -
The post-war evolution of the Norwegian longline fishery for ling and tusk
Helle, Kristin; Pennington, Michael (ICES CM documents;2011/D:03, Working paper, 2011) -
The relation between the spatial distribution of early juvenile cod (Gadus morhua L.) and zooplankton biomass in the Barents Sea
Helle, Kristin; Pennington, Michael (ICES CM Documents;1997/T:32, Working paper, 1997)The year class strength of Arcto-Norwegian cod (Gadus morhua L.) in the Barents Sea is extremely variable. One of the key indicators for a possible strong year class is water temperature since good year classes may be ... -
Tracking changes in the ling and tusk populations using CPUE estimates from logbook data
Helle, Kristin (ICES CM documents, Conference object, 2006)