Blar i ICES CM documents authored by IMR scientists (1949-2011) på emneord "VDP::Mathematics and natural science: 400::Zoology and botany: 480::Marine biology: 497"
Viser treff 61-80 av 514
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Factors affecting the parr-smolt transformation in Atlantic salmon
(ICES CM Documents;1979/M:2, Working paper, 1979)Factors affecting the parr-smolt transformation in Atlantic salmon (Salmo salar) are reviewed. The factors discussed are growth rate, temperature, photoperiod, salinity, food quality and quantity and hormones. Significance ... -
Fatty acid composition as indicator of food intake in cod larvae (Gadus morhua L.) from Lofoten, northern Norway
(ICES CM Documents;1987/L:31, Working paper, 1987)The year class strength of the Arcto-Norwegian cod is mainly determined during the early life stages. The mortality is caused both by starvation and predation which are linked to environmental factors during this period. ... -
Feeding conditions of north-east Arctic (Arcto-Norwegian) cod larvae compared to the Rothschild-Osborn theory on small-scale turbulence and plankton contact rates
(ICES CM Documents;1989/G:19, Working paper, 1989)Data on first feeding North-east arctic cod larvae in Lofoten, sampled during the period 1976 - 1984, are examined to verify the theory on the influence of microturbulence on the contact rate between predator and prey ... -
Feeding habits of northeast atlantic harp seal (Phoca groenlandica) along the summer ice edge of the Barents Sea
(ICES CM documents, Working paper, 1989)Stomachs from 58 harp seals Phoca groenlandica from the northern parts of the Barents Sea were collected between August 20 and September 5 1987. Fiftysix of the stomachs contained identifiable contents. The amphipod ... -
Field and laboratory studies of herring larvae (Clupea harengus L.)
(ICES CM Documents;1979/H:28, Working paper, 1979)The present study deals with herring larvae from a local herring stock in Lindåspollene, north of Bergen. Growth and survival experiments of herring larvae in relation to density and type of prey organisms have been ... -
Fifth report of the Marine Chemistry Working Group [Copenhagen, 7 -10 February, 1983]
(ICES CM Documents;1983/C:1, Working paper, 1983) -
Fish behaviour during sampling as observed from free floating buoys - application for bottom trawl survey assessment
(ICES CM documents, Working paper, 1999)Varying fish distribution and behaviour during bottom trawl surveys has long been considered important for the reliability of survey abundance estimates. Size and species dependent behaviour may bias the estimates and ... -
Fisheries-induced selection as a driver of biodiversity change in exploited populations
(ICES CM documents;2007/E:17, Working paper, 2007)Today, fishing is the dominant source of mortality in most commercially exploited fish stocks. Life-history theory predicts that changes in mortality regime cause selection on life-history traits. In particular, increased ... -
Formation of heavy bottom water in the Barents Sea
(ICES CM Documents;1984/C:17, Working paper, 1984)Formation of heavy bottom water through rejection of brine during ide freezing is a regular phenomenon in the Barents Sea, particular on the Novaya Zemlya shelf, but also observed in other shallow localities of the ... -
Formation of nutrient rich bottom water in the eastern parth of the Barents Sea
(ICES CM Documents;1997/R:1, Working paper, 1997)During yearly routine observations of hydrography, nutrients and plankton in the Barents Sea we have observed a distinct anomaly in the distribution of the nutrients silicate and nitrate in near bottom water in an area ... -
Fourth report of the working group on marine pollution baseline and monitoring studies in the North Atlantic : Charlottenlund, 17-19 May 1978
(ICES CM Documents;1978/E:6, Working paper, 1978) -
Growth of Atlantic herring larvae (Clupea harengus L.) in response to climatic long term trends (NAO) and to hydrographical features in the northern North Sea in the period 1990- 1997
(ICES CM Documents;1999/L:26, Working paper, 1999)Herring larvae were sampled during the IHLS in the ICES area IVa from 1990 to 1997. Larval growth was determined based on otolith microstructure analysis from larvae of 7-25mm standard length. The data were correlated ... -
Growth of capelin in relation to zooplankton biomass in the Barents Sea
(ICES CM Documents;1995/P:5, Working paper, 1995)Growth of capelin in the Barents Sea stock has been found to vary considerably both between years and between different parts of the distribution area. The aim of this paper is to compare such growth variations with ... -
Growth of scallop juveniles (Pecten maximus L.) in an enriched shallow seawater basin
(ICES CM Documents;1990/K:23, Working paper, 1990)The aim of this work was to see if a shallow, enriched seawater basin was a suitable location for scallop culture. Growth of great scallop juveniles (Pecten maximus L.) was compared with two open sea locations, and the ... -
Growth patterns in otoliths as an indication of daily growth variations of larval herring (Clupea harengus) from an experimental ecosystem
(ICES CM Documents;1981/H:31, Working paper, 1981)Larval herring were released in a large outdoor basin four days after hatching and the mean growth in length and weight of the herring larvae and fry was monitored for 100 days. The food supply was estimated from weekly ... -
Growth rates and age distributions of capelin (Mallotus villosus) larvae in the Barents Sea investigated by otolith increment analysis
(ICES CM documents, Working paper, 2004)In order to investigate age distributions and growth rates, otoliths from capelin larvae collected from the Barents Sea during the summers 2001-2003 were analysed using otolith microstructure analysis. Stations were ... -
Harbour seal Phoca vitulina habitat use and interactions with fisheries as explored by a combined GIS and population energetics model
(ICES CM documents, Working paper, 2000) -
Hatching of Atlantic salmon (Salmo salar) in an artificial substrate
(ICES CM Documents;1982/F:35, Working paper, 1982) -
Herring (Clupea harengus) as a key species in northeast Atlantic mink whale (Balaenoptera acutorostrata) diets
(ICES CM documents, Working paper, 1998) -
How and why acoustic detectability and catchability of herring change with individual motivation and physiological state in a variable environment: a multi-scale study on a local herring population in southwestern Norway
(ICES CM documents, Working paper, 2006)The understanding of distribution and aggregation in herring (Clupea harengus) can be enhanced by integrated multi-scale studies in small ecosystems. Hydro-acoustics, underwater cameras, herring and predator gillnet samples ...