Browsing Brage IMR by Author "Lahn-Johannessen, John"
Now showing items 1-20 of 36
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Acoustic estimates of abundance of 0-group gadoids in the northern North Sea in July 1985
Lahn-Johannessen, John (ICES CM Documents;1986/G:28, Working paper, 1986)This paper presents the results from a joint survey with two research vessels in July 1985. Total estimates of abundance (N x 10-9 ), were: Norway pout 56, haddock 52, whiting 66 and cod 4. Comparisons are made with a ... -
An acoustic survey on 0-group gadoids in the northern North Sea and the Shetland-Orkney area, July 1984
Aglen, Asgeir; Lahn-Johannessen, John; Smedstad, Odd M. (ICES CM Documents;1985/G:17, Working paper, 1985)An acoustic survey was carried out by two research vessels in July 1984 to assess the distribution and abundance of 0-group gadoids. The 0-groups were distributed in scattering layers by night and in schools by day. ... -
Bunnfisk på den norske kontinentalskråning
Bakken, Erling; Lahn-Johannessen, John; Gjøsæter, Jakob (Fisken og havet;1975 - Nr.2, Research report, 1975)Investigations of distribution and abundance of demersal fish in 400—1000 m depth were carried out in three selected areas off Norway in July—August 1974. Based on catches in 48 hauls by bottom trawl and 3 longline settings ... -
Bunnfiskundersøkelser i Nord-Norge og Barentshavet første halvår 1970
Hylen, Arvid; Lahn-Johannessen, John; Nævdal, Gunnar (Fisken og havet, Research report, 1972)In the present report is given an account of field work with preliminary results of investigations on demersal fish species during the first months of 1970 in northern Norway and in the Barents Sea. The report is primarily ... -
Bunnfiskundersøkelser ved Bjørnøya, Spitsbergen og i Barentshavet med F/F "G. O. Sars" 3. - 20. november 1970
Hylen, Arvid; Jakobsen, Tore; Lahn-Johannessen, John; Smedstad, Odd M.; Sætre, Roald (Fisken og havet, Research report, 1972)The primary aim of the cruise was to obtain data of the abundance and distribution of the prerecruits (0—3 years of age) of cod and haddock. It was also intended that the cruise should yield information about the suitability ... -
Further investigations on Norway pout from the North Sea
Lahn-Johannessen, John; Radhakrishnan, N. (ICES CM Documents;1970/F:18, Working paper, 1970) -
Hydrografiske undersøkelser og kartlegging av fiskefordeling i Nordsjøen i februar 1972
Bakken, Erling; Lahn-Johannessen, John; Ljøen, Rikard; Østvedt, Ole Johan; Danielssen, Didrik S. (Fisken og havet, Research report, 1973)The present report outlines the results of a survey carried out by R. V. "G. O. Sars" and R. V. "Johan Hjort" in February 1972. The distribution and relative abundance of fish in the North Sea were mapped on the basis of ... -
Hydrografiske undersøkelser og kartlegging av plankton og fiskefordeling i Nordsjøen og Norskehavet i juni - juli 1972
Iversen, Svein A.; Jakupsstovu, Stein Hjalti; Lahn-Johannessen, John; Danielssen, Didrik S. (Fisken og havet, Research report, 1974)In June—July 1972 R. V. «G. O. Sars» carried out a survey in the northern North Sea, Skagerrak and the adjacent waters of the Norwegian Sea. The general features of the hydrography was determined, the relative abundance ... -
Loddeinnsiget 1970
Lahn-Johannessen, John; Monstad, Terje (Fisken og havet;1970 - Nr. 2, Research report, 1970) -
The Norwegian fisheries for Norway pout
Lahn-Johannessen, John; Olsen, Steinar; Stålesen, Olav (ICES CM Documents;1964/120, Working paper, 1964) -
The Norwegian fisheries for sandeel
Lahn-Johannessen, John (ICES CM Documents;1970/F:11, Working paper, 1970) -
The Norwegian system of sampling landings from the mixed fisheries
Lahn-Johannessen, John (ICES CM Documents;1973/F, Working paper, 1973) -
Observations on Silver Smelts (Argentina sp.) from the Norwegian Deeps
Lahn-Johannessen, John; Radhakrishnan, N. (ICES CM Documents;1970/F:13, Working paper, 1970) -
Population structure of Ammodytes marinus in the Northeast Atlantic
Nævdal, Gunnar; Lahn-Johannessen, John; Reinert, Jákup; Thorkildsen, Solveig (ICES CM Documents;1996/G:23, Working paper, 1996)Samples of the lesser sandeel species Ammodytes marinus Raitt were collected from Iceland, Denmark, Scotland, the Faeroe Islands and central and northern North Sea, and analysed for frequency distributions of genotypes ... -
A preliminary report on the ICES-coordinated acoustic survey of herring stocks in 1979.
Bailey, R.S.; Corten, A.; Lahn-Johannessen, John; Maucorps, A.; Wood, R.J. (ICES CM Documents;1979/H:44, Working paper, 1979)At the 1978 statutory meeting, the Council adopted a resolution put forward by the Pelagic fish committee VIa in 1979. The guidelines for the survey were set out in the report of the Herring assessment working group (CM ... -
Rapport om tokt med "G. O. Sars" til Lofoten og Barentshavet fra 17. februar til 1. april 1966
Lahn-Johannessen, John; Møller, Dag; Olsen, Steinar (Fisken og havet;1966 - Nr.5, Research report, 1966) -
Recent development of the fisheries for Greenland halibut (Reinhardtius hippoglossoides, Walbaum) in northeast Atlantic waters
Lahn-Johannessen, John (ICES CM Documents;1972/F:39, Working paper, 1972) -
Report on the 1984 herring acoustic survey in the northern North Sea
Simmonds, E. John; Bailey, R.S.; Aglen, Asgeir; Lahn-Johannessen, John; Smedstad, Odd M.; Van de Kamp, G. (ICES CM Documents;1985/H:34, Working paper, 1985) -
Report on the distribution of cod, haddock, whiting and Norway pout from a cruise with R/V "G.O.Sars" in June - July 1972
Danielssen, Didrik S.; Lahn-Johannessen, John; Ljøen, Rikard (ICES CM Documents;1972/F:40, Working paper, 1972) -
The results of the international 0-group gadoid survey in the North Sea 1979 and of an 0-group Gadoid survey to the west of Scotland.
Benjaminsen, Terje; Daan, N.; Hislop, J.R.G.; Holden, M. J.; Lahn-Johannessen, John; Parnell, W. G. (ICES CM Documents;1979/G:36, Working paper, 1979)The survey was carried out in the period 13 June to 5 July by 4 vessels, CORELLA (England), EXPLORER (Scotland), JOHAN HJORT (Norway) and TRIDENS (The Netherlands). The gear used, the design of the experiment and the ...