Blar i ICES CM documents authored by IMR scientists (1949-2011) på forfatter "Melle, Webjørn"
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Acoustic properties of Salpa thompsoni.
Wiebe, Peter H.; Chu, Dezhang; Kaartvedt, Stein; Hundt, Anna (Hölter); Melle, Webjørn; Ona, Egil; Batta-Lona, Paola (ICES CM documents;2009 / I:01, Working paper, 2009)Salps are common members of the world oceans planktonic community (Madin, et.al., 2006). In the southern ocean, both krill (Euphausia superba) and salps (Salpa thompsoni) can occur in dense aggregations (Loeb et al, 2009, ... -
Acoustic visualization of large scale macroplankton and micronekton distributions across the Norwegian shelf and slope of the Norwegian Sea.
Melle, Webjørn; Kaartvedt, Stein; Knutsen, Tor; Dalpadado, Padmini; Skjoldal, Hein Rune (ICES CM Documents;1993/L:44, Working paper, 1993)We present results from acoustical (38 kHz split beam) surveys, biological sampling (trawling, zooplankton nets), and measurements of physical parameters (salinity, temperature, currents) across and along the shelf ... -
Comparison of 4 Northern Hemisphere regions: Ecosystem responses to recent oceanographic variability
Mueter, Franz; Broms, Cecilie; Drinkwater, Ken; Friedland, Kevin; Hare, Jon; Hunt, George; Melle, Webjørn; Taylor, Maureen (ICES CM documents;2007/D:07, Working paper, 2007)Ecosystem responses to oceanographic variability resulting from recent climate changes are compared and contrasted for four high latitude regions of the Northern Hemisphere, two in the Pacific (Bering Sea and Gulf of Alaska) ... -
Distribution of herring (Clupea harengus) and zooplankton in the Norwegian Sea, as determined from generalised additive models
Olsen, Esben Moland; Melle, Webjørn; Kaartvedt, Stein; Holst, Jens Christian; Mork, Kjell Arne (ICES CM documents, Working paper, 2005)We analyse the variability in the distribution and feeding of the Norwegian spring-spawning herring in the period from 1995 to 2004, using survey data collected throughout the Norwegian Sea each year in May - June. The ... -
Ecosystem responses to recent climate variability: comparison of four northern hemisphere regions
Drinkwater, Ken; Mueter, Franz; Friedland, Kevin; Hunt, George; Hare, Jon; Broms, Cecilie; Melle, Webjørn; Taylor, Maureen (ICES CM documents;2009:G:09, Working paper, 2009) -
Feeding and migration of Norwegian spring spawning herring in the Norwegian Sea
Melle, Webjørn; Røttingen, Ingolf; Skjoldal, Hein Rune (ICES CM Documents;1994/R:9, Working paper, 1994)After spawning on the shelf off Møre, Western Norway, the spawning stock of Norwegian spring spawning herring migrates to the Norwegian Sea for feeding. Simultaneously, the adolescent part of the stock leaves the wintering ... -
Food and feeding conditions and prey selectivity of herring (Clupea harengus) through its feeding migrations from Costal areas of Norway to the Atlantic and Arctic watermasses of the Nordic Seas
Dalpadado, Padmini; Dommasnes, Are; Ellertsen, Bjørnar; Melle, Webjørn (ICES CM documents, Working paper, 1998) -
Food and feeding conditions of herring Clupea harengus in the Norwegian Sea
Dalpadado, Padmini; Melle, Webjørn; Ellertsen, Bjørnar; Dommasnes, Are (ICES CM Documents;1996/L:20, Working paper, 1996)The feeding ecology of herring was studied using samples collected during cruises in 1994 and 1995. Investigations were carried out in the Møre shelf region off western Norway where the major spawning of herring occurs, ... -
Migration behaviour of herring along the cold front in the Norwegian Sea in April 1997
Misund, Ole Arve; Fernö, Anders; Guenette, Sylvie; Mackinson, Steven; Melle, Webjørn; Nøttestad, Leif; Slotte, Aril (ICES CM Documents;1997/EE:12, Working paper, 1997)The behaviour of Norwegian spring spawning herring when migrating to the feeding areas in the Norwegian Sea in April was mapped by an acoustic survey in 1997. The distribution of herring was recorded by conventional echo ... -
Migration behaviour of Norwegian spring spawning herring when entering the cold front in the Norwegian Sea
Misund, Ole Arve; Melle, Webjørn; Fernö, Anders (ICES CM Documents;1996/H:13, Working paper, 1996)The distribution of Norwegian spring spawning herring when migrating to the feeding areas in the Norwegian Sea in spring has been mapped by surveys in April1995 and 1996. The schooling behaviour of the herring have been ... -
Plankton biomass, production and variability in the Norwegian Sea ecosystem
Melle, Webjørn; Rey, Francisco; Ellertsen, Bjørnar; Skjoldal, Hein Rune (ICES CM documents, Working paper, 2004) -
Prey-specific gastric evacuation of Norwegian spring spawning herring (Clupea harengus)
Broms, Cecilie; Melle, Webjørn; Thorsen, Anders (ICES CM Documents;2004/P:39, Working paper, 2004)Gastric evacuation rates have earlier mainly been measured based on laboratory experiments. The aim of this study is to obtain information of gastric evacuation rates when the herring are feeding in their natural environment. ... -
Regional dynamics of Calanus in the Norwegian Sea in response to ocean climate in 1997
Slagstad, Dag; Tande, Kurt; Melle, Webjørn; Ellertsen, Bjørnar; Carlotti, Francois (ICES CM Documents;2000/M:20, Working paper, 2000)A coupled 3D hydrodynamic and ecological model has been set up for the Norwegian Sea (i.e. SINMOD). The hydrodynamic model uses the z-coordinates in the vertical direction. The horizontal grid point distance is 6.67 km ... -
Report of the Planning Group on Surveys on Pelagic Fish in the Norwegian Sea [Bergen, Norway, 28- 30 August, 2002]
Jacobsen, Jan Arge; Gudmundsdottir, Asta; Heino, Mikko; Holst, Jens Christian; Krysov, Alexander; Melle, Webjørn; Mork, Kjell Arne; Røttingen, Ingolf; Tangen, Øyvind; Vilhjálmsson, Hjálmar (ICES CM Documents;2002/D:7, Working paper, 2002) -
Report on surveys of the distribution, abundance and migrations of the Norwegian spring-spawning herring, other pelagic fish and the environment of the Norwegian Sea and adjacent waters in late winter, spring and summer of 1999
Holst, Jens Christian; Blindheim, Johan; Couperus, Bram; Hammer, Cornelius; Jakupsstovu, Stein Hjalti; Melle, Webjørn; Mork, Kjell Arne; Stein, Manfred; Vilhjálmsson, Hjálmar; Götz, Sabine; Krysov, Alexander; Martin, Bettina; Zimmermann, Christopher (ICES CM Documents;1999/D:3, Working paper, 1999)Introduction: The Norwegian spring-spawning herring reoccupied the Norwegian Sea as its main feeding area in the early 1990s, after nearly 25 years of absence. The herring stock is now a typical straddling and highly ... -
Reports on surveys of the distribution, abundance and migrations of the Norwegian springspawning herring, other pelagic fish and the environment of the Norwegian Sea and adjacent waters in later winter, spring and summer of 1998
Holst, Jens Christian; Melle, Webjørn; Arrhenius, Fredrik; Hammer, Cornelius; Håkansson, Nils; Jacobsen, Jan Arge; Krysov, Alexander; Vilhjálmsson, Hjálmar (ICES CM documents, Working paper, 1998) -
Reproduction of zooplankton in relation to initiation of spring phytoplankton bloom in the Barents Sea
Melle, Webjørn; Skjoldal, Hein Rune; Hassel, Arne; Rey, Francisco (ICES CM Documents;1987/L:30, Working paper, 1987)The phytoplankton spring bloom development and zooplankton reproduction were investigated in April 1986 in the central and northern Barents Sea. Different stages of phytoplankton bloom development were found, reflecting ... -
Size of eggs and nauplii of calanoid copepods in the Barents Sea; influence of environmental and maternal factors
Melle, Webjørn (ICES CM Documents;1991/L:63, Working paper, 1991)During the years 1986 to 1988 eight cruises were conducted in the central and western parts of the Barents Sea. The cruises, together spanning the time period from January to July, covered most developmental stages of ... -
Spawning and development of Calanus spp. in the Barents Sea
Skjoldal, Hein Rune; Melle, Webjørn (ICES CM Documents;1994/L:22, Working paper, 1994)From 1986 to 1988 eight cruises were conducted in the Barents Sea, covering Atlantic water in central parts of the Sea and meltwater and Arctic water in the Polar front region. During the cruises hydrography, ... -
The challenge of the herring in the Norwegian Sea: making optimal collective spatial decision
Fernö, Anders; Melle, Webjørn; Misund, Ole Arve; Pitcher, Tony; Nøttestad, Leif; Mackinson, Steven; Hollingworth, Charles (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 ...