Blar i Brage IMR på forfatter "Tjelmeland, Sigurd"
-
Interrelations between fish populations in the Barents sea : proceedings of the fifth PINRO-IMR Symposium, Murmansk, 12-16 August 1991
Bogstad, Bjarte; Tjelmeland, Sigurd (PINRO-IMR Symposium;5, Research report, 1992) -
Joint PINRO/IMR report on the state of the Barents Sea ecosystem 2005/ 2006
Stiansen, Jan Erik; Aglen, Asgeir; Bogstad, Bjarte; Budgell, W. Paul; Dalpadado, Padmini; Dolgov, Andrey V.; Dommasnes, Are; Filin, Anatoly; Gjøsæter, Harald; Hauge, Kjellrun Hiis; Høines, Åge S.; Ingvaldsen, Randi; Johannesen, Edda; Jørgensen, Lis Lindal; Karsakov, A.L.; Klungsøyr, Jarle; Knutsen, Tor; Lien, Vidar S.; Loeng, Harald; Mehl, Sigbjørn; Buhl-Mortensen, Pål; Muchina, N.V.; Nesterova, V.N.; Olsen, Erik; Orlova, Emma L.; Ozhigin, Vladimir K.; Pedchenko, Andrey; Stenevik, Erling Kåre; Skogen, Morten D.; Titov, Oleg V.; Tjelmeland, Sigurd; Zabavnikov, V.B.; Ziryanov, S.V.; Zhukova, Nathalia; Øien, Nils; Aanes, Sondre (IMR/PINRO joint report series, Research report, 2006) -
Kva har vi lært av loddetoktet? [Leserbrev i Fiskaren 26 mars 2008]
Tjelmeland, Sigurd; Røttingen, Ingolf (Others, 2008-03-26) -
Lodda i Barentshavet [leserbrev i Fiskaren]
Tjelmeland, Sigurd; Røttingen, Ingolf (Chronicle, 2008-02-11) -
"Lodda på sommerbeite" . Feltobservasjoner i 1979 og 1980
Ellertsen, Bjørnar; Loeng, Harald; Rey, Francisco; Tjelmeland, Sigurd (Fisken og havet, Research report, 1981)The Institute of Marine Research has, since 1979, carried out investigations on the capelin feeding conditions in the Barents Sea during the summer season. This program is aimed at obtaining data that can contribute to ... -
Loddeundersøkelser i Barentshavet vinteren 1981
Alvheim, Oddgeir; Dommasnes, Are; Martinsen, Otto; Tjelmeland, Sigurd (Fisken og havet, Research report, 1983)From 5 January to 1 April, five vessels participated in the capelin investigations in the Barents Sea and along the coast of Finnmark. The immature capelin west of 30°E was distributed south to 73°30'N. In an area around ... -
Long-term optimal exploitation of cod and capelin in the Barents Sea using the Bifrost model [presentation]
Tjelmeland, Sigurd (IMR/PINRO Joint Report Series;2/2005, Conference object, 2005) -
Long-term optimal exploitation of cod and capelin in the Barents Sea using the Bifrost model [presentation]
Tjelmeland, Sigurd (IMR/PINRO Joint Report Series;2/2005, Conference object, 2005) -
Markedsbasert høsting av lodde
Isaksen, John Roald; Tjelmeland, Sigurd; Dreyer, Bent; Røttingen, Ingolf (Nofima rapportserie, Research report, 2011) -
Maturity studies of Barents Sea capelin: Variations in length at maturity for female capelin
Forberg, Knut; Tjelmeland, Sigurd (PINRO-IMR Symposium, Conference object, 1985)The sexual maturation of female capelin in the Barents Sea is studied using a new method based on microscope investigation of eggs. A "length at maturity" (L) is defined, and a method for synthesizing the data is ... -
A method for estimation of predation mortalities on capelin using a cod-capelin model for the Barents Sea
Bogstad, Bjarte; Tjelmeland, Sigurd (PINRO-IMR Symposium, Conference object, 1992)The Barents Sea capelin stock coliapsed during the period 1983-1986. One of the main factors causing the colIapse was a rapid increase in consumption of capelin by cod, caused by the strong 1983 cod year class. Based ... -
Methodology for assessment of the capelin spawning migration in the Barents Sea, spring 2008
Eriksen, Elena; Johansen, Geir Odd; Pedersen, Geir; Peña, Hector; Svellingen, Ingvald; Tjelmeland, Sigurd ([Toktrapport/Havforskningsinstituttet];Nr. 8 - 2008, Working paper, 2008) -
Methodology for assessment of the capelin spawning migration in the Barents Sea, spring 2009
Eriksen, Elena; Johansen, Geir Odd; Tjelmeland, Sigurd; Peña, Hector; Alvarez, Jaime ([Toktrapport/Havforskningsinstituttet];Nr. 1 - 2009, Working paper, 2009) -
Miljøinformasjon i bestandsvurdering og rådgivning
Huse, Geir; Bogstad, Bjarte; Hauge, Kjellrun Hiis; Korsbrekke, Knut; Loeng, Harald; Michalsen, Kathrine; Skagen, Dankert W.; Stiansen, Jan Erik; Sundby, Svein; Svendsen, Einar; Tjelmeland, Sigurd; Toresen, Reidar (Fisken og havet, Research report, 2007)This report summarizes the work of an internal working group appointed by the Institute of Marine Research's management group to evaluate inclusion of environmental parameters in stock evaluation. The report discusses ... -
Milliardtap, Terje Jensen?
Tjelmeland, Sigurd (Others, 2008-10-29) -
Spatial and temporal patterns in recruitment of shrimp Pandalus borealis in the Barents Sea
Aschan, Michaela; Ådlandsvik, Bjørn; Tjelmeland, Sigurd (ICES CM documents, Working paper, 2000)The shrimp spawn in autumn and the eggs are carried as out roe by the females until spring when the larvae hatch. Within a period of 2-3 months the shrimp larvae settle to the bottom. Today’s assessment and forecast of ... -
Stimfisk - et viktig element i det dynamiske havmiljøet
van der Meeren, Gro; Aglen, Asgeir; Eriksen, Elena; Johannesen, Edda; Knutsen, Tor; Stenevik, Erling Kåre; Tjelmeland, Sigurd; Øien, Nils; Lorentsen, Svein-Håkon (Conference object, 2010-09-23) -
Stimfisk - et viktig element i det dynamiske havmiljøet
van der Meeren, Gro; Aglen, Asgeir; Eriksen, Elena; Johannesen, Edda; Knutsen, Tor; Stenevik, Erling Kåre; Tjelmeland, Sigurd; Øien, Nils; Lorentsen, Svein-Håkon (Conference object, 2010-09-23) -
A stochastic model for the Barents Sea capelin stock with predation from an exogenous cod stock
Tjelmeland, Sigurd (PINRO-IMR Symposium, Conference object, 1992)Based on the model CAPELIN used with management of the Barents Sea capelin stock until 1986, a model that is structured on age and sex is constructed. The predation on the mature part of the stock is connected to the ... -
Sustainable yield estimates of the Barents sea capelig stock
Hamre, Johannes; Tjelmeland, Sigurd (ICES CM Documents;1982/H:45, Working paper, 1982)The Barents Sea capelin suffer mass mortality after spawning. A model is developed to calculate the biomass of springspawners using previous autumn acoustic survey estimates of the total stock as input data. It is assumed ...