Zobrazeno 1 - 6
of 6
pro vyhledávání: '"Olav Nikolai Breivik"'
Publikováno v:
Breivik, O N, Nielsen, A & Berg, C W 2021, ' Prediction–variance relation in a state-space fish stock assessment model ', ICES Journal of Marine Science, vol. 78, no. 10, fsab205, pp. 3650-3657 . https://doi.org/10.1093/icesjms/fsab205
The state-space assessment model (SAM) is extended by allowing a functional relationship between observation variance and the corresponding prediction. An estimated relationship between observation variance and predicted value for each individual obs
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::57cc0fd9623dca8d5aeddbf37890011c
https://doi.org/10.1093/icesjms/fsab205
https://doi.org/10.1093/icesjms/fsab205
Autor:
Sigbjørn Mehl, Fredrik L Aanes, Espen Johnsen, Asgeir Aglen, Guldborg Søvik, Olav Nikolai Breivik
Publikováno v:
ICES Journal of Marine Science. 78:2031-2042
A general spatio-temporal abundance index model is introduced and applied on a case study for North East Arctic cod in the Barents Sea. We demonstrate that the model can predict abundance indices by length and identify a significant population densit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::72aa4ef558b542c09254f5bbf21cf5c2
https://doi.org/10.1093/icesjms/fsab073
https://doi.org/10.1093/icesjms/fsab073
Publikováno v:
ICES Journal of Marine Science
The North Sea cod stock assessment is based on indices of abundance-at-age from fishery-independent bottom trawl surveys. The age structure of the catch is estimated by sampling fish for otoliths collection in a length-stratified manner from trawl ha
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::931a125158622578e42a5e7106b87ee5
https://hdl.handle.net/11250/2689495
https://hdl.handle.net/11250/2689495
Publikováno v:
Canadian Journal of Fisheries and Aquatic Sciences
In the Barents Sea and adjacent water, fishing grounds are closed for shrimp fishing by the Norwegian Directorate of Fisheries Monitoring and Surveillance Service (MSS) if the expected number of juvenile fish caught are predicted to exceed a certain
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a9498ce15b9f9fd8c782ec1bb01df077
https://doi.org/10.1139/cjfas-2015-0322
https://doi.org/10.1139/cjfas-2015-0322
Publikováno v:
Fisheries Research
Knowledge about how many fish that have been killed due to bycatch is an important aspect of ensuring a sustainable ecosystem and fishery. We introduce a Bayesian spatio-temporal prediction method for historical bycatch that incorporates two sources
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::44ac08a870b6bc119453126b85fb396a
http://hdl.handle.net/11250/2471902
http://hdl.handle.net/11250/2471902
Autor:
Olav Nikolai Breivik, Erik Vanem
Publikováno v:
Natural Hazards and Earth System Sciences, Vol 13, Iss 3, Pp 545-557 (2013)
Extreme weather conditions represent serious natural hazards to ship operations and may be the direct cause or contributing factor to maritime accidents. Such severe environmental conditions can be taken into account in ship design and operational wi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b00e520cffe147fc791d66cfc5e70afd
http://www.nat-hazards-earth-syst-sci.net/13/545/2013/nhess-13-545-2013.pdf
http://www.nat-hazards-earth-syst-sci.net/13/545/2013/nhess-13-545-2013.pdf