Blar i Brage IMR på forfatter "Melle, Webjørn"
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Marine indikatorer
van der Meeren, Gro; Øigård, Tor Arne; Øien, Nils; Nilssen, Kjell Tormod; Oug, Eivind; Sunnanå, Knut; Jakobsen, Tore; Mehl, Sigbjørn; Kvamme, Cecilie; Torstensen, Else; Stenevik, Erling Kåre; Planque, Benjamin; Helle, Gunnar; Gjøsæter, Jakob; Skiftesvik, Anne Berit; Aglen, Asgeir; Johannessen, Tore; Dommasnes, Are; Naustvoll, Lars-Johan; Moy, Frithjof E.; Falkenhaug, Tone; Melle, Webjørn; Knutsen, Tor; Eriksen, Elena; Jørgensen, Lis Lindal; Fosså, Jan Helge; Bannister, Raymond; Buhl-Mortensen, Lene; Buhl-Mortensen, Pål; Strand, Øivind; Søvik, Guldborg; Jelmert, Anders; Knutsen, Jan Atle; Enersen, Svein Erik; Edvardsen, Hanne; Kroglund, Tone; Pedersen, Atle; Eikrem, Wenche; Bekkby, Trine; Tveite, Stein (DN-utredning;4-2010, Chapter, 2010-09)The Nature Index (NI) is established to get an overview of the state and development of biodiversity within the major ecosystems of Norway. It includes marine, limnic and terrestrial ecosystems. The aim of the index is to ... -
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 ... -
Migration patterns in Norwegian spring-spawning herring: why young fish swim away from the wintering area in late summer
Kvamme, Cecilie; Nøttestad, Leif; Fernö, Anders; Misund, Ole Arve; Dommasnes, Are; Axelsen, Bjørn Erik; Dalpadado, Padmini; Melle, Webjørn (Journal article; Peer reviewed, 2003-03-04)Norwegian spring-spawning herring Clupea harengus make extensive feeding migrations in the Norwegian Sea during summer. At the end of the feeding season herring may meet conflicting demands between moving to areas with ... -
Multibrukssystem for tauete farkoster og droppsonde - forprosjekt: evaluering av operasjoner, teknologi og systemer med utgangspunkt i måle- og observasjonsbehov
Dalen, John; Knudsen, Hans Petter; Knutsen, Tor; Vedeler, Terje; Melle, Webjørn (Fisken og havet, Research report, 2001)I hovedprosjektet skal det utvikles et integrert system av to tauete farkoster og en droppsonde med sine målesystemer, sensorer og kommunikasjonsgrensesnitt for dataoverføring som i stor grad bruker felles teknologi for ... -
Piscivorous fish patrol krill swarms
Kaartvedt, Stein; Røstad, Anders; Fiksen, Øyvind; Melle, Webjørn; Torgersen, Thomas; Breien, M. T.; Klevjer, Thor A. (Journal article; Peer reviewed, 2005-09-01)Dense swarms of the krill Meganyctiphanes norvegica in the Norwegian Sea were patrolled by large, piscivorous fish, which apparently use the krill swarms as feeding grounds in their hunt for planktivores. For the krill, ... -
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) -
Plankton som råstoffkilde for fremstilling av fôrmidler til bruk innen fiskeoppdrett. Et forprosjekt. Delprosjekt: Utredning av forekomster og tilgjengelighet av dyreplankton.
Hassel, Arne; Melle, Webjørn (Interne notat, Working paper, 1999-06-04)Rapporten utreder forekomster av dyreplankton i det nordlige Atlanterhavet og Barentshavet. Det er lagt sarlig vekt på rauåte, krill, amphipoder og mesopelagisk makroplankton. Rapporten behandler tetthet, vertikalfordeling, ... -
Planktonforekomster over Svalbardbanken om vinteren: Akustiske registreringer og video-opptak fra en fjernstyrt undervannsfarkost (ROV)
Knutsen, Tor; Melle, Webjørn; Hassel, Arne; Dalen, John (Interne notat, Working paper, 1997)I forbindelse med konsekvensanalysen før eventuell oljeleting innenfor området Barentshavet-Nord er det gjennomført feltundersøkelser for å avdekke om det er et vesentlig gytefelt for polartorsk i Barentshavet. Undersøkelsene ... -
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 and development of Calanius finmarchicus, C. glacialis and C. hyperboreus in the Barents Sea
Melle, Webjørn; Skjoldal, Hein Rune (Journal article; Peer reviewed, 1998)The aim of this study is to examine the reproduction and development of Calanus finmarchicus, C. glacialis and C. hyperboreus in relation to the timing and progress of the phytoplankton spring bloom in different water ... -
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 ... -
Sildeklekking og seigyting på Møre i 1986 [HELP 4]
Bjørke, Herman; Hansen, Karsten; Melle, Webjørn (help, Research report, 1987) -
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 ...