Blar i Havforskningsinstituttet på emneord "bestandssvingninger"
Viser treff 1-12 av 12
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Benefits of threshold strategies and age-selective harvesting in a fluctuating fish stock of Norwegian spring spawning herring Clupea harengus
(Journal article; Peer reviewed, 2005-08-15)The current state of the world’s fisheries resources requires further investigation into the means and methods for sustainable use of fish stocks. In this study, I assess the performance of different harvesting strategies ... -
Decline and Recovery of Atlantic Cod (Gadus morhua) Stocks throughout the North Atlantic
(Chapter, 2008)Many stocks of Atlantic cod (Gadus morhua) on both sides of the North Atlantic are currently at much reduced levels of biomass, but this situation is not in all instances the result of long, continuous decline. Most Northwest ... -
Decline and Recovery of Atlantic Cod (Gadus morhua) Stocks throughout the North Atlantic
(Chapter, 2008)Many stocks of Atlantic cod (Gadus morhua) on both sides of the North Atlantic are currently at much reduced levels of biomass, but this situation is not in all instances the result of long, continuous decline. Most Northwest ... -
The ecology of recovery
(Journal article; Peer reviewed, 2003-04-30)The current high rate of population declines and attempts to `manage' their recovery, call for a better understanding of recovery dynamics of populations. In many cases, recovery of a population may primarily be determined ... -
Immigration and emigration of cod in the spawning areas of Lofoten and Møre
(ICES CM Documents;1984/G:48, Working paper, 1984)Abundance estimates of the spawning stock of north east Arctic cod have in recent years been given on the basis of acoustic surveys. Migration in and out of the surveyed areas during investigation has been considered as a ... -
Long-term fluctuations in cod and pollack along the Norwegian Skagerrak coast
(Journal article; Peer reviewed, 1998-02-12)We tested whether the long-term fluctuations in abundance of 0-group cod Gadus morhua and pollack Pollachius pollachius sampled from 1919 to 1994 at 38 stations along the Norwegian Skagerrak coast might be related to the ... -
Report of the ICES Study Group on Cod Stock Fluctuations [Lowestoft, 14- 16 August, 1990]
(ICES CM Documents;1990/G:50, Working paper, 1990)Introduction: The dynamics of marine ecosystems in the context of climatic change are of considerable practical and scientific concern. The practical concern stems from the need to manage the global ocean or at least large ... -
Report of the Study Group on Cod Stock Fluctuations [Hamburg, 16- 18 April, 1991]
(ICES CM Documents;1991/G:78, Working paper, 1991) -
Report of the Workshop on the Decline and Recovery of cod Stocks throughout the North Atlantic, including trophodynamic effects (WKDRCS) [9–12 May 2006 St.John's, Canada]
(ICES CM documents;2006/OCC:12, Working paper, 2006) -
Spatial patterns of the temporal dynamics of three gadoid species along the Norwegian Skagerrak coast
(Journal article; Peer reviewed, 1997-08-28)Time series from an extensive research survey of juveniles of cod Gadus morhua, pollack Pollachius pollachius and whiting Merlangius merlangus sampled from 1919 to 1994 at 38 stations along the Norwegian Skagerrak coast ... -
Utvalg til å vurdere fremtidig utvikling i våre mest sentrale fiskebestander
(Rapport fra Havforskningen;Nr. 29 - 2012, Working paper, 2012)