Blar i ICES CM documents authored by IMR scientists (1949-2011) på forfatter "Lahn-Johannessen, John"
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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. ... -
Further investigations on Norway pout from the North Sea
Lahn-Johannessen, John; Radhakrishnan, N. (ICES CM Documents;1970/F:18, Working paper, 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 ... -
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 ... -
The results of the international 0-group gadoid survey in the North Sea, 1976
Daan, N.; Hislop, J.R.G.; Holden, M. J.; Parnell, W. G.; Knudsen, H.; Lahn-Johannessen, John (ICES CM Documents;1976/F:12, Working paper, 1976) -
The results of the international 0-group gadoid survey in the North Sea, 1978.
Benjaminsen, Terje; Lahn-Johannessen, John; Daan, N.; Hislop, J.R.G.; Parnell, W. G. (ICES CM Documents;1978/G:10, Working paper, 1978)The survey was carried out in the period 11 June - 11 July by 4 vessels, CORELLA (England), EXPLORER (Scotland), JOHAN HJORT (Norway) and TRIDENS (Netherlands) . The gears used, the design of the experiment and the ... -
Sampling of the industrial fisheries in Norway
Lahn-Johannessen, John (ICES CM Documents;1977/D:8, Working paper, 1977) -
Some observations on Norway pout and blue whiting in ICES sub-areas I and II
Lahn-Johannessen, John (ICES CM Documents;1966/17, Working paper, 1966)