Browsing ICES CM documents authored by IMR scientists (1949-2011) by Subject "herring"
Now showing items 241-260 of 269
-
Sampling herring in the Norwegian Sea by pelagic trawl
(ICES CM Documents;1997/W:21, Working paper, 1997)When the stock of Norwegian spring-spawning herring is distributed in the Norwegian Sea in summertime, pelagic trawl sampling may be rather challenging because of substantial variation in vertical distribution (from ... -
Significance of population genetics on management of herring stocks.
(ICES CM Documents;1981/H:64, Working paper, 1981) -
Significance of population genetics on management of herring stocks.
(ICES CM Documents;1981/H:64, Working paper, 1981) -
Size dependency in the migrations and distribution of Norwegian spring spawning herring
(ICES CM documents, Working paper, 2003)The size at first spawning is comparatively larger in Norwegian spring spawning herring (Clupea harengus L.) than in other herring stocks in the Atlantic and Pacific oceans. This is probably an adaptation to a life with ... -
Size selective mortality in Norwegian spring spawning herring juveniles?
(ICES CM documents, Working paper, 2005)The growth-mortality hypothesis, where survival during the larval stage is positively related to size, is tested for Norwegian spring spawning herring (Clupea harengus L.). The daily increment width in the otoliths is ... -
Some aspects of the interrelation between the herring in the Norwegian Sea and the stocks of capelin and cod in the Barents Sea
(ICES CM Documents;1988/H:42, Working paper, 1988)The paper reviews the life history and exploitation of the Norwegian spring spawning herring, the Barents Sea capelin and the north-east Arctic cod. On this basis and from relevent knowledge of climatic conditions, the ... -
Some observations on the feeding ecology of Norwegian spring spawning herring (Clupea harengus) along the coast of Norway
(ICES CM Documents;1993/L:47, Working paper, 1993)The feeding ecology of Norwegian spring spawning herring Clupea harengus was studied with samples collected from cruises in February -March 1991, May 1992, and February and April 1993. A wide variety of zooplankton ... -
A sonar study of the migration pattern of Norwegian spring-spawning herring (Clupea harengus L.) in July
(ICES CM documents, Working paper, 2000)About 700 schools of Norwegian spring-spawning herring (Clupea harengus L.) were tracked by multi-beam sonar during transect surveys in the Norwegian Sea in July 1995 and 1996. This herring stock usually concentrates in ... -
Spatial and temporal overlap and trophic interactions between Atlantic Saithe (Pollachius virens) and Norwegian spring spawning herring (Clupea harengus) on herring spawning grounds
(ICES CM documents, Working paper, 2005)Atlantic saithe (Pollachius virens) and Norwegian spring-spawning herring (Clupea harengus) represent two of the most abundant and ecologically important fish species in the Northeast Atlantic. The two species co-occur ... -
Spawning of Norwegian spring spawning herring (Clupea harengus L.) related to geographical location and population structure
(ICES CM Documents;1997/CC:17, Working paper, 1997)The catch, distribution, and biology were studied in Norwegian spring spawning herring during the spawning season in 1995. Both the spawning time and choice of spawning grounds were influenced by the size and condition ... -
The spring-spawning group of herring in the north-eastern North Sea
(ICES CM Documents;1966/H:25, Working paper, 1966) -
Stock size fluctuations and rate of exploitation of the Norwegian spring-spawning herring, 1950 - 1974
(ICES CM Documents;1975/H:47, Working paper, 1975) -
The stock size of herring in the Northern Sea in 1966
(ICES CM Documents;1969/H:35, Working paper, 1969) -
A study on survival and growth of fish larvae in a large basin, related to feeding conditions : A preliminary study on herring larvae (Clupea harengus L.) and fry
(ICES CM Documents;1975/E:44, Working paper, 1975) -
Swimming speed of spent Norwegian spring spawning herring
(ICES CM Documents;1991/H:9, Working paper, 1991)In March 1990 spent Norwegian spring spawning herring were tagged on the spawning grounds off Karmøy in southwestern Norway. 37 of these tagged herring were recaptured approximately 40 hours later. The recapture took place ... -
Test experiments of target strength of herring by comparing density indices obtained by acoustic method and purse seine catches
(ICES CM Documents;1994/B:17, Working paper, 1994)The spawning stock of the Norwegian spring spawning herring has been assessed by acoustic methods using the target strength TS = 20 logL - 71.9 dB (L = mean length of fish) Comparable estimates of fish density were ... -
The challenge of the herring in the Norwegian Sea: making optimal collective spatial decision
(ICES CM Documents;1996/H:15, Working paper, 1996)Herring are long-lived multiple spawners exhibiting strong variation in reproductive and recruitment success between years. They tend to adopt low-risk, preferred-conservative strategies; for example, shifts to alternative ... -
The effects of the 1983 herring year-class on the 1983 capelin year-class
(ICES CM Documents;1988/H:53, Working paper, 1988) -
The herring fishery
(ICES CM Documents;1988/H:58, Working paper, 1988) -
The Norwegian spring-spawning herring prior to 1970 [Life history]
(ICES CM Documents;1988/H:56, Working paper, 1988)