Browsing Brage IMR by Author "Pedersen, Ronald"

Antarctic krill (Euphausia superba) catch weight estimated with a trawl-mounted echosounder during fishing

Krafft, Bjørn Arne; Krag, Ludvig A.; Pedersen, Ronald; Ona, Egil; Macaulay, Gavin (Peer reviewed; Journal article, 2023)

Reporting reliable catch weight estimates is important for all fisheries management. This study explores the potential for precise and direct estimation of catch weight (green weight) for the Antarctic krill (Euphausia ...

Antarctic krill and ecosystem monitoring survey at South Orkney Islands in 2015, and assessing escape mortality of krill in trawls

Skaret, Georg; Krafft, Bjørn A.; Krag, Ludvig A.; Pedersen, Ronald (Rapport fra Havforskningen;9-2015, Working paper, 2015-05)

Antarctic krill and ecosystem monitoring survey at South Orkney Islands in 2016

Krafft, Bjørn Arne; Skaret, Georg; Krag, Ludvig Ahm; Rustand, Torborg; Pedersen, Ronald (Rapport fra havforskningen;20-2016, Research report, 2016)

Small scaled Russian exploratory fishing for krill in the Southern Ocean began in the late 1960s. During the 1970s the fisheries increased and annual catches of krill have exhibited a number of fluctuations since the ...

Antarctic krill and ecosystem monitoring survey off the South Orkney Islands in 2018

Krafft, Bjørn Arne; Skaret, Georg; Krag, Ludvig Ahm; Pedersen, Ronald (Rapport fra havforskningen;16-2018, Research report, 2018)

Environmental monitoring along set transect lines off South Orkney Islands, Southern Ocean. Executed annual surveys (since 2011) to collect acoustic and biological data on krill, other macro zooplankton and data on krill ...

Antarctic krill and ecosystem monitoring survey off the South Orkney islands in 2018

Krafft, Bjørn Arne; Skaret, Georg; Krag, Ludvig Ahm; Pedersen, Ronald (CCAMLR;WG-EMM-18/P03, Research report, 2018)

Antarctic krill and ecosystem monitoring survey off the South Orkney Islands in 2023

Krafft, Bjørn Arne; Pedersen, Ronald; Zhang, Guosong; Menze, Sebastian; Rasmussen, Astrid Fuglseth; Skaar, Hege; Dale, Julian; Biuw, Martin; Oosthuisen, Chris; Lowther, Andrew (Toktrapport;2023 - 8, Research report, 2023)

Environmental monitoring along 5 set transect lines off South Orkney Islands in the Southern Ocean have been carried out annually (since 2011) by the Institute of Marine Research, Norway. Data are used to calculate biomass ...

Blue whiting survey during spring 2006

Heino, Mikko; Søiland, Henrik; Dahl, Martin; Alvarez, Jaime; Anthonypillai, Valentine; Eriksen, Kirsti Børve; Wenneck, Thomas de Lange; Meland, Elna; Pedersen, Ronald; Tangen, Øyvind; Torkelsen, Terje ([Toktrapport/Havforskningsinstituttet];Nr. 3 - 2006, Working paper, 2006-04)

Cruise report [20/7 - 17/8, 1997]

Monstad, Terje; Bjelland, Otte; Anthonypillai, Valentine; Gullaksen, Ole; Pedersen, Ronald; Sundt, Rolf C.; Thorsen, Anders ([Toktrapport/Havforskningsinstituttet];, Working paper, 1997-08-21)

Distribution and biomass estimation of Antarctic krill (Euphausia superba) off the South Orkney Islands during 2011-2020

Skaret, Georg; Macaulay, Gavin; Pedersen, Ronald; Wang, X.; Klevjer, Thor A.; Krag, L.A.; Krafft, Bjørn Arne (Peer reviewed; Journal article, 2023)

Antarctic krill is a key species in the Southern Ocean and subject to the most extensive fishery in the Antarctic. The Norwegian Institute of Marine Research has conducted acoustic-trawl monitoring of krill off the South ...

Distribution of Antarctic krill and apex predators at South Orkney Islands in 2014, and assessing escape mortality of krill in trawls

Krafft, Bjørn A.; Krag, Ludvig A.; Klevjer, Thor A.; Skaret, Georg; Pedersen, Ronald (Rapport fra Havforskningen;Nr. 10-2014, Working paper, 2014)

Evaluation of Antarctic krill biomass and distribution off the South Orkney Islands 2011-2015

Skaret, Georg; Krafft, Bjørn Arne; Calise, Lucio; Watkins, J; Pedersen, Ronald; Godø, Olav Rune (;WG-EMM-15/54, Research report, 2015-06-22)

Annual acoustic trawl surveys for krill monitoring have been carried out by the Institute of Marine research, Norway near the South Orkney Islands since 2011. The survey has been conducted early in the fishing season ...

Fordeling og mengde av tobis i norsk sone av Nordsjøen i mai 2023 — Tobistokt i Nordsjøen 23. april – 13. mai 2023

Johnsen, Espen; Pena, Hector; Pedersen, Ronald; Husebø, Åse; Solbakken, Lisbet (Toktrapport;2024 - 10, Research report, 2024)

Gytebiomassen i 2023 av havsil (tobis) i sørlige del av norsk sone av Nordsjøen er 105 000 tonn (5%-95% konfidensintervall er 80 000 – 136 000 tonn), og er sterkt redusert siden toppåret 2020. Middels og dårlig rekruttering ...

Gytefeltskartlegging Nordøstarktisk hyse: Toktnummer 2022609

Johannesen, Edda; Gabrielsen, Heidi Kathrine; Frøysa, Håvard G; Holm, Else Agnete; Husebø, Åse; Pedersen, Ronald; Petersen, Marianne; Seim, Silje Elisabeth (Toktrapport;2022 - 8, Research report, 2022)

Gytekartleggingstokt for nordøstarktisk hyse ble gjennomført 8. -19. april 2022 med FF Kristine Bonnevie. Toktet startet i Bodø og ble avsluttet i Tromsø. Toktet dekket det antatte gyteområdet langs Eggakanten mellom ...

Pelagiske undersøkelser på blåkveite ved Eggakanten [17/8 - 31/8, 2006]

Vollen, Tone; Karlsen, Karl-Erik; Pedersen, Ronald; Kvalsund, Merete ([Toktrapport/Havforskningsinstituttet];Nr. 11 - 2007, Working paper, 2006)

South Orkney Island 2016 Antarctic krill and ecosystem monitoring

Krafft, Bjørn Arne; Skaret, Georg; Krag, Ludvig Ahm; Rustand, Torborg; Pedersen, Ronald (CCAMLR;WG-EMM-16/P03, Conference object, 2016)

Testing acoustic platforms and methodology for studying behaviour of demersal fish in a bottom trawl survey [19/9 - 10/10, 2005]

Godø, Olav Rune; Handegard, Nils Olav; Johansen, Geir Odd; Torkelsen, Terje; Totland, Atle; Pedersen, Ronald ([Toktrapport/Havforskningsinstituttet];Nr. 21 - 2005, Working paper, 2005)