Blar i Brage IMR på forfatter "Hamre, Johannes"
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A new model for simulating growth in fish
Hamre, Johannes; Johnsen, Espen; Hamre, Kristin (Journal article; Peer reviewed, 2014-01-16)A real dynamic population model calculates change in population sizes indepen- dent of time. The Beverton & Holt (B&H) model commonly used in fish assessment includes the von Bertalanffy growth function which has age or ... -
Acoustic abundance estimates of the Icelandic stock of capelin, October 1978 - January 1980.
Vilhjálmsson, Hjálmar; Reynisson, Páll; Hamre, Johannes; Røttingen, Ingolf (ICES CM Documents;1980/H:63, Working paper, 1980)During the period October 1978 - January 1980 several estimates of the size and yearclass composition of the Icelandic capelin stock were obtained by the acoustic method. Surveying was carried out in October 1978, ... -
Acoustic abundance estimation of the Icelandic stock of capelin : 1978-1982
Vilhjálmsson, Hjálmar; Reynisson, Páll; Hamre, Johannes; Røttingen, Ingolf (Working paper, 1982)During the period October 1978 - february 1982 several abundance estimates and yearclass composition of the Icelandic capelin stock were obtained by acoustic methods. Surveying has been carried out in July-Agust, September, ... -
Age and Growth of Mackerel from Skagerrak and the Northern North Sea
Castello, J. P.; Hamre, Johannes (ICES CM Documents;1969/H:7, Working paper, 1969) -
Akustiske og biologiske undersøkelser i Nordsjøen og Skagerak i februar - mars 1970
Hamre, Johannes; Nakken, Odd (Fisken og havet;1970 - Nr. 2, Journal article, 1970) -
Assessment and management of Barents Sea capelin
Hamre, Johannes (PINRO-IMR Symposium, Conference object, 1985)The history of the Barents Sea capelin fishery and fishery regulations is reviewed. Basic assessment data and theories are described and discussed in the light of the population dynamics governing the sustainable yield. -
Bestands- og forvaltningshistorikk for lodde og sild i 1970- og 80-årene
Hamre, Johannes (Conference object, 1986) -
Bestandsundersøkelser og forslag til regulering av loddefisket i området lsland-Grønland-Jan Mayen i 1979
Hamre, Johannes; Røttingen, Ingolf (Journal article, 1979-10-15)Sommeren 1978 begynte norske ringnotfartøyer å fiske lodde i området mellom Jan Mayen og Grønland. Dette er lodde som gyter ved Island om vinteren, og som beiter i området mellom Island, Grønland og Jan Mayen om sommeren. ... -
Biologiske og klimastyrte relasjoner mellom sild, lodde og torsk i Norskehavet og Barentshavet
Hamre, Johannes (Conference object, 1999-12-02) -
Biology and population dynamics of the Norwegian spring- spawning herring
Dragesund, Olav; Hamre, Johannes; Ulltang, Øyvind (Journal article; Peer reviewed, 1980) -
Biology, exploitation, and management of the northeast atlantic mackrel
Hamre, Johannes (Journal article; Peer reviewed, 1980) -
A brief statement on the present state of the Norwegian mackerel fishery
Revheim, Arne; Hamre, Johannes (ICES CM Documents;1968/H:24, Working paper, 1968) -
Capelin and herring as key species for the yield of cod: Results from multispecies model runs
Hamre, Johannes (IMR/PINRO Joint Report Series, Conference object, 2002)A conceptual multispecies model for the fishery of capelin, cod and herring (Systmod) in the Norwegian Sea-Barents Sea region has been developed and used in analysing the impact of different fishery management strategies ... -
Capelin and herring as key species for the yield of cod: Results from multispecies model runs
Hamre, Johannes (IMR/PINRO Joint Report Series, Conference object, 2002)A conceptual multispecies model for the fishery of capelin, cod and herring (Systmod) in the Norwegian Sea-Barents Sea region has been developed and used in analysing the impact of different fishery management strategies ... -
The effect of recent changes in the North Sea mackerel fishery on stock and yield
Hamre, Johannes (Journal article; Peer reviewed, 1978)The paper deals with biological aspects and exploitation of the mackerel (Scomber scombrus) stocks occurring in the North Sea. The state of stocks and exploitation in the North Sea area are investigated on the basis of ... -
The effects of a minimum landings size regulation in the fishery of Norwegian spring-spawning herring
Hamre, Johannes; Toresen, Reidar (ICES CM Documents;1986/H:51, Working paper, 1986)Effects of minimum landing size (LC) in the fishery of Norwegian spring-spawning herring have been investigated. The herring is assumed to be a unit stock, in which the growth of immatures differs according to the ... -
Effects of climate and stocks interactions on the yield of north-east arctic cod. Results from multispecies model run
Hamre, Johannes (ICES CM documents, Working paper, 2000)A conceptual climate dependent multispecies model for stock interactions and harvesting of herring, capelin and cod in the Norwegian Sea-Barents Sea region has been developed. The concept presupposes that good recruitment ... -
The effects of regulations of the mackerel fishery in the North Sea
Hamre, Johannes; Ulltang, Øyvind (ICES CM Documents;1972/H:30, Working paper, 1972) -
Explotation and state of stock
Hamre, Johannes; Toresen, Reidar (ICES CM Documents;1988/H:57, Working paper, 1988) -
Final report from the FAO Fisheries Biologist. [for the two years contract period 1965-67]
Hamre, Johannes (Others, 1967-05-23)