Blar i ICES CM documents authored by IMR scientists (1949-2011) på forfatter "Mehl, Sigbjørn"
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Acoustic abundance of spawning Northeast Arctic cod in the Lofoten survey spring 2003: Preliminary results
Mehl, Sigbjørn; Nedreaas, Kjell Harald; Salthaug, Are (Working paper, 2003) -
Acoustic and Bottom Trawl Surveys; How Much Information Do They Provide for Assessing the Northeast Arctic Cod Stock?
Korsbrekke, Knut; Mehl, Sigbjørn; Nakken, Odd; Pennington, Michael (ICES CM documents, Working paper, 1999)Acoustic and bottom trawl surveys of the Northeast Arctic cod stock provide fishery independent estimates of trends in abundance and population characteristics. Given the recent uncertainties in the catch based assessment ... -
Akustisk mengdemåling av gytebestanden av skrei: Lofoten mars-april 2004: Førebels rapport
Mehl, Sigbjørn (Working paper, 2004) -
CEC - a VPA for cod in the Barents Sea with cod - cod cannibalism
Skagen, Dankert W.; Bogstad, Bjarte; Mehl, Sigbjørn (Working paper, 1990) -
The cestode parasite Grillotia Angeli as a biological tag for mackerel in the eastern North Atlantic
MacKenzie, K.; Mehl, Sigbjørn (ICES CM documents, Working paper, 1984)The trypanorhynch cestode Grillotia angeli Dollfus, 1969, infects mackerel Scomber scombrus L. up to the age of two years and survives thereafter as an encvsted plerocercus for as long as the mackerel lives. In the eastern ... -
Cod Consume Capelin
Johannesen, Edda; Johansen, Geir Odd; Bogstad, Bjarte; Mehl, Sigbjørn; Tjelmeland, Sigurd; Dolgov, Andrey V. (Working paper, 2006) -
Comparison of Norwegian and Russian trawl performance: Preliminary analysis of cod data
Mehl, Sigbjørn (Working paper, 1998) -
The consumption rate of northeast arctic cod - a comparison of gastric evacuation models
Bogstad, Bjarte; Mehl, Sigbjørn (ICES CM documents, Working paper, 1990)The consumption rares in fish are important but also often weak points in multispecies models. In the Barents Sea multispecies model (MULTSPECI, as in many other models, quantltative stomach content data are combined ... -
Description of the Norwegian/Russian stomach data set
Bogstad, Bjarte; Mehl, Sigbjørn (Working paper, 1992) -
The diet and consumption of mackerel in the North Sea (a preliminary report)
Mehl, Sigbjørn; Westgård, Trond (ICES CM documents, Working paper, 1983)The contents of 3674 mackerel stomacks sampled during 1981 and 1982 are analysed and presented. The samples were taken by five countries at 270 different stations as a part of The International Stomach Sampling Programme ... -
The diet of North-East Arctic cod 1984-1994
Bogstad, Bjarte; Mehl, Sigbjørn (Working paper, 1995) -
Diet overlap between North-East Arctic cod and haddock in the southern part of the Barents Sea in 1984-1986
Burgos, Guillermo; Mehl, Sigbjørn (ICES CM documents, Working paper, 1987)The diet composition of North-East Arctic cod (Gadus morhua) and haddock (Melanogrammus aeglefinus) are examined from stomach content data. Fish were collected in the southern part of the Barents Sea from 1984 to 1986. A ... -
Distribution, abundance and adjusted indices for cod, haddock, redfish and Greenland halibut in the Barents sea winter 1997
Mehl, Sigbjørn (Working paper, 1997) -
Estimates of mackerel stock composition in different areas and reasons as indicated by a cestone parasite
MacKenzie, K.; Mehl, Sigbjørn (ICES CM documents, Working paper, 1983)Recently collected data support earlier indications of the value of the plerocercus of the trypanorhynch oestone Grillotia angeli as a biological tag for estimating the size of the Western stock component in populations ... -
Estimates of mackerel stock composition in different areas and seasons as indicated by a cestode parasite
MacKenzie, K.; Mehl, Sigbjørn (ICES CM Documents;1982/H:46, Working paper, 1982) -
Estimates of stock size of cod, haddock, redfish and Greenland halibut in the Barents Sea and the Svalbard area autumn 1988
Hylen, Arvid; Loeng, Harald; Mehl, Sigbjørn; Nedreaas, Kjell Harald (ICES CM documents, Working paper, 1989)Combined acoustic and bottom trawl survey for cod, haddock and redfish were carried out in autumn 1988 in the Svalbard area together with an acoustic survey in the Barents Sea. The abundance indicies of cod decreased from ... -
Estimates of stock size of cod, haddock, redfish and greenland halibut in the Barents Sea and the Svalbard area, autumn 1987
Hylen, Arvid; Jacobsen, Jan Arge; Mehl, Sigbjørn; Nedreaas, Kjell Harald (ICES CM Documents;1988/G:44, Working paper, 1988)Combined acoustic and bottom trawl survey for cod and haddock were carried out in the Svalbard area together with an acoustic survey in the Barents Sea in autumn 1987. The abundance index in numbers of cod continued ... -
Estimates of stock size of Northeast Arctic cod and haddock from survey data 1986/1987
Godø, Olav Rune; Hylen, Arvid; Jacobsen, Jan Arge; Jakobsen, Tore; Mehl, Sigbjørn; Nedreaas, Kjell Harald; Sunnanå, Knut (ICES CM documents, Working paper, 1987)Combined acoustic and bottom trawl survey for cod and haddock were carried out in the Svalbard area in autumn 1986 and in the Barents Sea during the winter 1987. An acoustic survey for spwaning cod was carried out in March ... -
Estimates of stock size of northeast Arctic cod and haddock, "Sebastes mentella" and "Sebastes marinus" from survey data, winter 1988
Hylen, Arvid; Jacobsen, Jan Arge; Jakobsen, Tore; Mehl, Sigbjørn; Nedreaas, Kjell Harald; Sunnanå, Knut (ICES CM Documents;1988/G:43, Working paper, 1988)An acoustic survey and a bottom trawl survey for cod and haddock were carried out in the Barents Sea during the winter 1988. The fish still had the westerly distribution established in the previous year, but the echo ... -
Estimates of stock size of northeast arctic cod and haddock, Sebastes mentella and Sebastes marinus from survey data, winter 1989
Jakobsen, Tore; Mehl, Sigbjørn; Nakken, Odd; Nedreaas, Kjell Harald; Sunnanå, Knut (ICES CM documents, Working paper, 1989)The combined acoustic and bottom trawl survey in the Barents Sea in winter has been carried out since 1981. The target species are cod and haddock, but in recent years the redfish species Sebastes marinus and Sebastes ...