Browsing Brage IMR by Author "Totland, Atle"
Now showing items 1-19 of 19
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A stationary acoustic system for monitoring undisturbed and vessel affected fish behaviour
Godø, Olav Rune; Totland, Atle (ICES CM Documents;1996/B:12, Working paper, 1996)Thorough knowledge of the dynamics of natural fish behaviour and distribution within a survey and among surveys is fundamental for reliability of time series of abundance indices. Further, vessel/trawl affected avoidance ... -
Bergen acoustic buoy (BAB)—A tool for remote monitoring of marine resources
Godø, Olav Rune; Totland, Atle (Others, 1999) -
Cruise report Hywind Tampen 13 to 28 March 2023 - Cruise no. 2023001004 G.O. Sars
Utne-Palm, Anne Christine; Søiland, Henrik; Sveistrup, Anne; Renner, Angelika; Ross, Rebecca; Moy, Frithjof Emil; Paskyabi, Mosttafa Bakhoday; Totland, Atle; Hannaas, Sigurd; de Jong, Karen; Gonzalez-Mirelis, Genoveva; Hovland, Terje; Pedersen, Geir; Wilhelmsen, Jan Frode; Majaneva, Markus; Heum, Sverre Waardal; Skjold, William; Vågenes, Stig; Skaret, Georg; Corus, Finn; Voronkov, Andrey; Kielland, Leonard (Toktrapport;2023 - 10, Research report, 2023)There is very little knowledge related to how floating windfarms effect the marine environment as this is such a new “product”. Thus, the data that we gathered on this cruise will be novel in that sense. The aim of the ... -
Does seismic have an effect on zooplankton? - Field study at Ekofisk with RV Kristine Bonnevie
Utne-Palm, Anne Christine; de Jong, Karen; Pedersen, Geir; Klevjer, Thor A.; Titelman, Josefin; Strand, Espen; Vereide, Emilie Hernes; Kühn, Saskia; Hannaas, Sigurd; Totland, Atle; Buschmann, Håvard Johnsen; Mihaljevic, Marina; Strømme, Rune; Johannesen, Reidar (Toktrapport;2022 - 9, Research report, 2022)Toktnr: 2022611 -
Fish behaviour during sampling as observed from free floating buoys - application for bottom trawl survey assessment
Godø, Olav Rune; Somerton, David; Totland, Atle (ICES CM documents, Working paper, 1999)Varying fish distribution and behaviour during bottom trawl surveys has long been considered important for the reliability of survey abundance estimates. Size and species dependent behaviour may bias the estimates and ... -
Fiskeåtferd og prøvetaking
Godø, Olav Rune; Totland, Atle (Rapport fra senter for marine ressurser;Nr. 4 - 1993, Working paper, 1993-04) -
Kayak Drone – a silent acoustic unmanned surface vehicle for marine research
Totland, Atle; Johnsen, Espen (Peer reviewed; Journal article, 2022)Advancements in technologies have led to a rapid development of unmanned surface vehicles (USV) for marine ecosystem monitoring. The design, size, and scientific payload of the USVs differ as they are built for different ... -
Measuring distribution and density of sprat in Årdalsfjorden with a kayak drone - 15-16 August 2020
Johnsen, Espen; Totland, Atle; Kvamme, Cecilie (Rapport fra havforskningen;2020 - 28, Research report, 2020)Sprat is a key species in several Norwegian fjords, as an important prey for fish, sea mammals and sea birds. The sprat populations are monitored with routine acoustic-trawl surveys using a large research vessel, which ... -
Migratory behaviour of reared Norwegian coastal cod and north east Arctic cod
Godø, Olav Rune; Totland, Atle (ICES CM Documents;1995/G:11, Working paper, 1995)This paper is based on experiments to test if differences in migratory behaviour of Norwegian coastal cod and north east Arctic cod is related to parental origin or, alternatively, is related to the environmental experienced ... -
StoX: An open source software for marine survey analyses
Johnsen, Espen; Totland, Atle; Skålevik, Åsmund; Holmin, Arne Johannes; Dingsør, Gjert Endre; Fuglebakk, Edvin; Handegard, Nils Olav (Journal article; Peer reviewed, 2019)Scientists across the globe conduct survey programs to monitor and characterize abundance, population structure, biodiversity and geographical distributions. To assess the state of marine fish and zooplankton, population ... -
Testing acoustic platforms and methodology for observing marine ecosystem processes [1/10 - 20/10, 2006]
Johansen, Geir Odd; Godø, Olav Rune; Pedersen, Geir; Staurland Aarbakke, Ole Nicolai; Torkelsen, Terje; Totland, Atle ([Toktrapport/Havforskningsinstituttet];Nr. 10 - 2006, Working paper, 2006) -
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) -
Testing of acoustic stock estimation of spawning capelin
Pena, Hector; Totland, Atle; Øvredal, Jan Tore (Toktrapport, Research report, 2019) -
Testing of trawl-acoustic stock estimation of spawning capelin 2020
Skaret, Georg; Pena, Hector; Totland, Atle; Anthonypillai, Valentine; Karlson, Stine; Drivenes, Lage; Røttingen, Jostein; Bogetveit, Frøydis Rist (Toktrapport;2020 - 2, Research report, 2020)This report describes the second in a series of three trawl-acoustic monitoring surveys of the spawning stock of capelin during the migration to the coast. The survey is a response to a proposal from the industry to evaluate ... -
Testing of trawl-acoustic stock estimation of spawning capelin 2021
Skaret, Georg; Pena, Hector; Totland, Atle; Zhang, Guosong; Hellenbrecht, Lea Marie; Karlson, Stine; Pedersen, Ronald; Tonheim, Susanne; Rist, Frøydis; Anthonypillai, Valentine (Toktrapport;2021 - 5, Research report, 2021)This report describes the third in a series of trawl-acoustic monitoring surveys of the spawning stock of capelin during the migration to the coast. The survey is a response to a proposal from the industry to evaluate the ... -
Testing of trawl-acoustic stock estimation of spawning capelin 2022
Skaret, Georg; Pena, Hector; Totland, Atle; Tenningen, Maria; Zhang, Guosong (Toktrapport;2022 - 4, Research report, 2022)This report describes the fourth in a series of trawl-acoustic monitoring surveys of the spawning stock of capelin during the migration to the coast. The survey is a response to a proposal from the industry to evaluate the ... -
Testing of trawl-acoustic stock estimation of spawning capelin 2023
Skaret, Georg; Totland, Atle; Tenningen, Maria; Hermansen, Eilert; Kristiansen, Jarle A; Pena, Hector (Toktrapport;2023 - 5, Research report, 2023)This report describes the fifth in a series of trawl-acoustic monitoring surveys of the maturing stock of capelin during the spawning migration to the coast. The survey is a response to a proposal from the industry to ... -
The use of transplantation-tagging-experiments in studies of migratory diversity of cod off Norway
Godø, Olav Rune; Korsbrekke, Knut; Soldal, Aud Vold; Totland, Atle (ICES CM Documents;1994/Mini:12, Working paper, 1994)Cod along the Norwegian coast show great variability in migration. Coastal Cod may be stationary for the whole life while mature Northeast Arctic Cod migrate long distances to reach the feeding areas in the Barents Sea ... -
Vertical migrations of a deep-sea fish and its prey
Afonso, Pedro; McGinty, Niall; Graca, Goncalo; Fontes, Jorge; Inacio, Monica; Totland, Atle; Menezes, Gui (Journal article; Peer reviewed, 2014-05-23)It has been speculated that some deep-sea fishes can display large vertical migrations and likely doing so to explore the full suite of benthopelagic food resources, especially the pelagic organisms of the deep scattering ...