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Herring larvae (Clupea harengus) investigations in the Skagerrak area, December 1987 to March 1988. A preliminary report
(ICES CM Documents;1988/H:20, Working paper, 1988)From December 1987 to March 1988 two transects, Torungen - Hirtshals and Oksøy - Hanstholm, were performed once a month for sampling of herring larvae. The gear used was a 9 feet Isaac-Kid Midwater trawl sampling in the ... -
Herring larvae survey in the Skagerrak, Autumn 1966
(ICES CM Documents;1967/H:27, Working paper, 1967) -
Herring Tagging Experiment at Bløden Ground 1957 Part III : An analysis of the results to December 1957
(ICES CM Documents;, Working paper, 1957) -
Herring Tagging Experiment at Bløden Ground Part II (A preliminary report)
(ICES CM Documents;, Working paper, 1957) -
HM2 (Herring Model 2). A single species computer model of the Norwegian spring spawning herring stock
(PINRO-IMR Symposium, Conference object, 1990)HM2 represents an intermediate, experimental stage of a model that is being developed with the double purpose of being used as an independent single species model for the Norwegian Spring Spawning Herring and of being ... -
Holistic evaluation of management policies: What are the consequences of modified gear use on Georges Bank?
(ICES CM documents;2009/ O:26, Working paper, 2009)Georges Bank haddock is a recently recovered fish stock in the New England groundfish fishery. Due to federal constraints under the Magnuson-Steven Act, however, this stock cannot be optimally exploited due to the bycatch ... -
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 ... -
How can a potential oil pollution affect the recruitment to fish stocks?
(ICES CM Documents;1989/Mini:5, Working paper, 1989)Eggs, larvae and the larvae's first search for food are the most critical stages in a fish life, both to threats from natural causes and pollution. Based on experimental studies of several species of fish eggs, larvae ... -
How does fishing alter marine populations’ and ecosystems’ sensitivity to climate? – An introduction
(ICES CM documents;2009 /F:01, Working paper, 2009)The effects of climate and fishing on marine populations and ecosystems have conventionally been considered separately and it has often been suggested that they should be disentangled from each other. However, exploitation ... -
How does ice cover affect the benthic fauna in the Barents Sea?
(IMR/PINRO Joint Report Series;5/2007, Conference object, 2007) -
How does ice cover affect the benthic fauna in the Barents Sea?
(IMR/PINRO Joint Report Series;5/2007, Conference object, 2007) -
How does stochasticity affect evolutionary regime shifts in age and size at maturation?
(ICES CM documents, Working paper, 2006)Fish in many exploited stocks grow faster and mature earlier at either larger or smaller sizes in comparison to pre-exploitation periods. These changes can be driven by both genetic and phenotypic responses. We have shown ... -
How many trawl hauls, and how many fish from each haul are needed to obtain a given precision in the age structure estimate for Norwegian spring spawning herring? A bootstrap approach
(ICES CM documents, Working paper, 2006)The Norwegian spring spawning herring is assessed each year from acoustic surveys. The age structure in the stock is estimated from trawl samples. Typically, about 10 trawl samples are taken per survey, and 100 fish from ... -
How to correct fish density estimates for extinction
(ICES CM Documents;1990/B:24, Working paper, 1990)There have been many experimental studies on acoustic shadowing, but once the effect is quantified, how is the compensation to be effected? This work shows how, through postprocessing of stored time series, containing ... -
How variable is the fecundity within and between cod stocks?
(ICES CM documents, Working paper, 2005)Stock reproductive potential is determined by the number of fish at age, sex ratio, proportion of mature female at age and fecundity. Fecundity data, which are fundamental in estimating egg production are not collected ... -
Hull mounted, protruding transducer for improving echo integration in bad weather
(ICES CM documents, Working paper, 1990)A 38 kHz split beam survey transducer has been mounted on the tip of a 4 m vertical protrusile stabilizing keel of the United States NOAA fishery research vessel R/V Miller Freeman. Air blocking problems, generally ... -
Hull mounted, protruding transducer for improving echo integration in bad weather
(ICES CM Documents;1990/B:31, Working paper, 1990)A 38 kHz split beam survey transducer has been mounted on the tip of a 4 m vertical protrusile stabilizing keel of the United States NOAA fishery research vessel R/V Miller Freeman. Air blocking problems, generally ... -
Hydroacoustic detection of food waste - a method to estimate maximum food intake of fish populations in sea cages
(ICES CM Documents;1990/F:7, Working paper, 1990)A linear relationship between echo energy and amount of salmon dry food was established. Measurements were carried out both for food batches (5-400 gram) and single pellets. For a certain amount of food, the echo energy ... -
The hydrographical background for regional differences in phytoplankton abundance and specific composition within the Hardangerfjord area
(ICES CM Documents;1966/P:14, Working paper, 1966) -
Hydrographical Field Investigations in Norway during 1955
(ICES CM Documents;, Working paper, 1956)