Poster
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Sørhus, Elin; Bjelland, Reidun Marie; Durif, Caroline
et al. (2024). Embryos of lesser sandeel (Ammodytes marinus) are robust to crude oil exposure. (external link)
-
Pedersen, Geir; Handegard, Nils Olav; Khodabandeloo, Babak
et al. (2023). Classifying fish with broadband acoustics; behaviour and platform dependent broadband backscattering by physostomous fish (Clupea harengus L.). From Echosounders to the Cloud: Transforming Acoustic Data to Information.
. (external link)
-
Handegard, Nils Olav; Algrøy, Tonny; Eliassen, Inge Kristian
et al. (2023). Centre for research based innovation in marine acoustic abundance estimation and backscatter classification (CRIMAC). (external link)
-
Perrichon, Prescilla; Bjelland, Reidun Marie; Durif, Caroline
et al. (2022). IMPACT OF CHRONIC OIL POLLUTION ON RECRUITMENT OF PREY SPECIES - KnowSandeel Project. (external link)
-
Perrichon, Prescilla; Bjelland, Reidun Marie; Durif, Caroline
et al. (2021). Early ontogeny of lesser sandeel (Ammodytes marinus). (external link)
-
Handegard, Nils Olav; Gjøsæter, Harald; Johnsen, Espen
et al. (2018). Towards seamless integration of data and processing software: data products generated from machine-to-machine interfaces. (external link)
Report
-
Johnsen, Espen; Pena, Hector; Pedersen, Ronald
et al. (2024). Fordeling og mengde av tobis i norsk sone av Nordsjøen i mai 2023
— Tobistokt i Nordsjøen 23. april – 13. mai 2023. (external link)
-
Johnsen, Espen; Kvamme, Cecilie
(2024). Foreløpig råd for tobisfiske i norsk økonomisk sone i 2024 - Faglig grunnlag. (external link)
-
Handegard, Nils Olav; Allken, Vaneeda; Holmin, Arne Johannes
et al. (2024). Survey report for CRIMAC SFI 2023. (external link)
-
Otterå, Håkon Magne; Heggebakken, Lise; Høines, Åge Sigurd
et al. (2024). Fangstprøvelotteriet 2023 - erfaringer og resultat. (external link)
-
Marquez, Jonatan Fredricson; van der Meeren, Gro Ingleid; van der Meeren, Terje
et al. (2024). Liste over forvaltningsrelevante naturenheter - Oppfølgende informasjon til rapporten "Forvaltningsrelevante naturenheter i sjø". (external link)
-
Skaret, Georg; Diaz, Justine Emmanuelle; Heggebakken, Lise
et al. (2023). Fangstprøvelotteriet 2022 - erfaringer og resultat. (external link)
-
Arneberg, Per; Husson, Berengere; Siwertsson, Anna
et al. (2023). Panel-based Assessment of Ecosystem Condition of the North Sea Shelf Ecosystem. (external link)
-
Arneberg, Per; Husson, Berengere; Siwertsson, Anna
et al. (2023). Panel-based Assessment of Ecosystem Condition of the North Sea Shelf Ecosystem - Appendices. (external link)
-
Søvik, Guldborg; Falkenhaug, Tone; Zimmermann, Fabian
et al. (2023). Toktrapport fra økosystemtokt i Vestlandsfjordene
— Hydrografi, vannkjemi, reker, krill, bunnfisk, tobis og perifylla. (external link)
-
Høines, Åge Sigurd; Diaz, Justine Emmanuelle; Heggebakken, Lise
et al. (2023). Fangstprøvelotteriet 2021 - erfaringer og resultat. (external link)
-
Johnsen, Espen
(2023). Foreløpige råd for tobisfiskeriet i norsk økonomisk sone 2023. (external link)
-
Johnsen, Espen
(2022). Råd for tobisfiskeriet i norsk sone for 2022 - Tobistokt i Nordsjøen 27. april-12. mai 2022. (external link)
-
Handegard, Nils Olav; Pedersen, Geir; Forland, Tonje Nesse
et al. (2022). CRIMAC - Annual Report 2021. (external link)
-
Høines, Åge Sigurd; Johnsen, Espen; Kvamme, Cecilie
et al. (2022). Fangstprøvelotteriet 2020 – erfaringer og resultat. (external link)
-
Johnsen, Espen; Sørhus, Elin; de Jong, Karen
et al. (2021). Kunnskapsstatus for havsil i norsk sone av Nordsjøen. (external link)
-
Ona, Egil; Handegard, Nils Olav; Pedersen, Geir
et al. (2021). CRIMAC - Annual Report 2020. (external link)
-
Olsen, Erik Joel Steinar; Aanes, Sondre; Aldrin, Magne Tommy
et al. (2021). Final report for the REDUS project - Reduced Uncertainty in Stock Assessment. (external link)
-
Ona, Egil; Handegard, Nils Olav; Johnsen, Espen
et al. (2021). CRIMAC cruise report 2020116. (external link)
-
Johannesen, Edda; Wienerroither, Rupert; Mørk, Herdis Langøy
et al. (2021). Fish diversity data from the Barents Sea Ecosystem Survey 2004-2019. (external link)
-
Johnsen, Espen; Totland, Atle; Kvamme, Cecilie
(2020). Measuring distribution and density of sprat in Årdalsfjorden with a kayak drone - 15-16 August 2020. (external link)
-
Johannesen, Edda; Johnsen, Espen; Johansen, Geir Odd
et al. (2019). StoX applied to cod and haddock data from the Barents Sea NOR-RUS ecosystem cruise in autumn - Swept area abundance, length and weight at age 2004-2017. (external link)
-
Mehl, Sigbjørn; Aglen, Asgeir; Johnsen, Espen
et al. (2018). Estimation of acoustic indices with CVs for cod and haddock in the Barents Sea winter survey 1994 – 2017 applying the Sea2Data StoX software.. (external link)
-
Mehl, Sigbjørn; Johnsen, Espen; Skålevik, Åsmund
et al. (2018). Estimation of acoustic indices with CVs for Northeast Arctic saithe in the Norwegian coastal survey 2003-2017 applying the Sea2Data StoX software.. (external link)
-
Mehl, Sigbjørn; Aglen, Asgeir; Johnsen, Espen
(2016). Re-estimation of swept area indices with CVs for main demersal fish species in the Barents Sea winter survey 1994-2016 applying the Sea2Data StoX software. (external link)
-
Tangen, Magnus; Hamre, Johannes; Johnsen, Espen
et al. (2016). Tobis ved Vestlandet og i Nordsjøen 1950-1990. (external link)
-
Nøttestad, Leif; Johnsen, Espen; Utne, Kjell Rong
(2015). Makrellen er en velsignelse for verden og økosystemene. (external link)
-
Sunnanå, Knut; Kovalev, Yuri A.; Gjøsæter, Harald
et al. (2014). Assessments for management of living marine resources
in the Barents Sea and adjacent waters
– a focus on methodology
The 16th Russian-Norwegian Symposium
Sochi, Russia, 10-12 September 2013. (external link)
Academic lecture
-
Handegard, Nils Olav; Holmin, Arne Johannes; Johnsen, Espen
et al. (2024). Testing acoustic data quality and performance on Sounder USV. (external link)
-
Pedersen, Geir; Khodabandeloo, Babak; Johnsen, Espen
et al. (2024). Behaviour and platform dependent broadband backscattering by physostome fish (Clupea harengus L.) revisited. (external link)
-
Tenningen, Maria; Pedersen, Geir; Khodabandeloo, Babak
et al. (2024). Identifying size and behavior of Mueller’s Pearlside (Maurolicus muelleri) by combining measured broadband frequency responses with backscattering models and in-trawl observations . (external link)
-
Sørhus, Elin; Vikebø, Frode Bendiksen; Johnsen, Espen
(2023). Tobis en nøkkelart -hvor sårbar er de ulike livsfasene hos tobis for menneskelig aktivitet i Nordsjøen og Norskekysten?. (external link)
-
Sørhus, Elin; Vikebø, Frode Bendiksen; Johnsen, Espen
(2023). Spatial structure and sensitivity of lesser sandeel to increasing pressure of human activities filling knowledge gaps and improved risk assessment : KnowSandeel 2.0. (external link)
-
Johnsen, Espen; Handegard, Nils Olav; Totland, Atle
et al. (2023). Towards a multi-platform armada strategy for ecosystem based marine surveys. (external link)
-
Johnsen, Espen
(2023). Action plan for implementing USV in acoustic trawl surveys. CRIMAC – Workshop on Fisheries acoustics and Uncrewed Surface Vehicles.. (external link)
-
Pedersen, Geir; Handegard, Nils Olav; Johnsen, Espen
(2023). Behaviour dependent broadband backscattering by physostomous fish (Clupea harengus L.). (external link)
-
Handegard, Nils Olav; Brautaset, Olav; Choi, Changkyu
et al. (2022). Developing and deploying machine learning methods for acoustic data. (external link)
-
Handegard, Nils Olav; Forland, Tonje Nesse; Johnsen, Espen
et al. (2021). CRIMAC - Center for Research-based Innovation in Marine Acoustic Abundance Estimation and Backscatter Classification. (external link)
-
Ødegaard, Lars Alf; Pedersen, Geir; Johnsen, Espen
(2019). Underwater noise from wind at the high north LoVe
ocean observatory. (external link)
-
Johnsen, Espen; Totland, Atle; Kubilius, Rokas
et al. (2019). Acoustic measurements of herring close to the sea surface. (external link)
-
Lid, Sjur Ringheim; Fotland, Åge; Gjøsæter, Harald
et al. (2018). Sea2Data - from acquisition to advice. (external link)
-
Skaret, Georg; Fall, Johanna Jennifer Elisabeth; Fauchald, Per
et al. (2017). In situ study of the functional response of cod to capelin using broadband acoustics and trawl sampling. (external link)
-
Korsbrekke, Knut; Dingsør, Gjert Endre; Johnsen, Espen
(2013). Variance and estimates of number of individuals from acoustic surveys. (external link)
-
Totland, Atle; Gjøsæter, Harald; Handegard, Nils Olav
et al. (2013). "StoX" - an open source approach to survey calculations. (external link)
-
Misund, Ole Arve; Bogstad, Bjarte; Haug, tore
et al. (2012). Kvoteutsiktene for de viktigste fiskeslagene de neste 5 årene. (external link)
Academic article
-
Sørhus, Elin; Bjelland, Reidun Marie; Durif, Caroline
et al. (2024). Oil droplet fouling on lesser sandeel (Ammodytes marinus) eggshells does not enhance the crude oil induced developmental toxicity. (external link)
-
Pedersen, Geir; Johnsen, Espen; Khodabandeloo, Babak
et al. (2024). Broadband backscattering by Atlantic herring (Clupea harengus L.) differs when measured from a research vessel vs. a silent uncrewed surface vehicle. (external link)
-
Handegard, Nils Olav; De Robertis, Alex; Holmin, Arne Johannes
et al. (2024). Uncrewed surface vehicles (USVs) as platforms for fisheries and plankton acoustics. (external link)
-
Anderson, Sean C.; Bacheler, Nate; Barnett, Lewis
et al. (2023). WORKSHOP ON UNAVOIDABLE SURVEY EFFORT REDUCTION 2 (WKUSER2). (external link)
-
Perrichon, Prescilla; Bjelland, Reidun Marie; Durif, Caroline
et al. (2023). Early ontogeny of the lesser sandeel (Ammodytes marinus). (external link)
-
Totland, Atle; Johnsen, Espen
(2022). Kayak Drone – a silent acoustic unmanned surface vehicle for marine research. (external link)
-
Cresci, Alessandro; Perrichon, Prescilla; Durif, Caroline
et al. (2022). Magnetic fields generated by the DC cables of offshore wind farms have no effect on spatial distribution or swimming behavior of lesser sandeel larvae (Ammodytes marinus). (external link)
-
Breivik, Olav Nikolai; Aanes, Fredrik L; Søvik, Guldborg
et al. (2021). Predicting abundance indices in areas without coverage with a latent spatio-temporal Gaussian model. (external link)
-
Kjesbu, Olav Sigurd; Sundby, Svein; Sandø, Anne Britt
et al. (2021). Highly mixed impacts of near-future climate change on stock productivity proxies in the North East Atlantic. (external link)
-
Vogel, Emma; Biuw, Martin; Blanchet, Marie-Anne
et al. (2021). Killer whale movements on the Norwegian shelf are associated with herring density. (external link)
-
Skaret, Georg; Johansen, Geir Odd; Johnsen, Espen
et al. (2020). Diel vertical movements determine spatial interactions between cod, pelagic fish and krill on an Arctic shelf bank. (external link)
-
Ona, Egil; Zhang, Guosong; Pedersen, Geir
et al. (2020). In situ calibration of observatory broadband echosounders. (external link)
-
Brautaset, Olav; Waldeland, Anders Ueland; Johnsen, Espen
et al. (2020). Acoustic classification in multifrequency echosounder data using deep convolutional neural networks. (external link)
-
Zhang, Guosong; Forland, Tonje Nesse; Johnsen, Espen
et al. (2020). Measurements of underwater noise radiated by commercial ships at a cabled ocean observatory. (external link)
-
Lopez-vazquez, Vanesa; Lopez-guede, Jose Manuel; Marini, Simone
et al. (2020). Video Image Enhancement and Machine Learning Pipeline for Underwater Animal Detection and Classification at Cabled Observatories. (external link)
-
Ødegaard, Lars Alf; Pedersen, Geir; Johnsen, Espen
(2019). Underwater noise from wind at the high north LoVe
ocean observatory. (external link)
-
Van Engeland, Tom; Godø, Olav Rune; Johnsen, Espen
et al. (2019). Cabled ocean observatory data reveal food supply mechanisms to a cold-water coral reef. (external link)
-
Johnsen, Espen; Totland, Atle; Skålevik, Åsmund
et al. (2019). StoX: An open source software for marine survey analyses. (external link)
-
Ono, Kotaro; Kotwicki, Stan; Dingsør, Gjert Endre
et al. (2018). Multispecies acoustic dead-zone correction and bias ratio estimates between acoustic and bottom-trawl data. (external link)
-
Johnsen, Espen; Rieucau, Guillaume; Ona, Egil
et al. (2017). Collective structures anchor massive schools of lesser sandeel to the seabed, increasing vulnerability to fishery. (external link)
-
Korneliussen, Rolf; Heggelund, Yngve; Macaulay, Gavin
et al. (2016). Acoustic identification of marine species using a feature library. (external link)
-
Axelsen, Bjørn Erik E; Johnsen, Espen
(2015). An evaluation of the bottom trawl surveys in the Benguela Current Large Marine Ecosystem. (external link)
-
Hamre, Johannes; Johnsen, Espen; Hamre, Kristin
(2014). A new model for simulating growth in fish. (external link)
-
Godø, Olav Rune; Handegard, Nils Olav; Browman, Howard
et al. (2014). Marine ecosystem acoustics (MEA): Quantifying processes in the sea at the spatio-temporal scales on which they occur. (external link)
-
Johnsen, Espen; Harbitz, Alf
(2013). Small-scale spatial structuring of burrowed sandeels and the catching properties of the dredge. (external link)
-
Johnsen, Espen; Kathena, J.
(2012). A robust method for generating separate catch time-series for each of the hake species caught in the Namibian trawl fishery. (external link)
-
Zaera-Perez, Diana; Johnsen, Espen
(2011). Foetal deformities in a smooth-hound shark, Mustelus mustelus, from an oil exploited area in Angola. (external link)
-
Johnsen, Espen; Pedersen, Ronald; Ona, Egil
(2009). Size-dependent frequency response of sandeel schools. (external link)
Interview
Masters thesis
Errata
Abstract
Lecture
See a complete overview of publications in Cristin.