Blar i Publikasjoner fra CRIStin på forfatter "Albretsen, Jon"
-
High resolution modeling of aluminium transport in a fjord estuary with focus on mean circulation and irregular flow events
Simonsen, Magne; Albretsen, Jon; Sætra, Øyvind; Asplin, Lars; Lind, Ole Christian; Teien, Hans-Christian (Peer reviewed; Journal article, 2023)Environmental impact assessments of trace metals and radionuclides in estuarine waters will benefit from numerical transport models that can provide detailed and accurate predictions of concentrations of harmful physico-chemical ... -
Hvilken betydning har oppløsning for kyst- og fjordmodeller? - Validering og representasjonsberegninger av strømmodeller med eksempler fra Sulafjorden, Møre og Romsdal
Albretsen, Jon; Asplin, Lars (Rapport fra havforskningen;2021 - 20, Research report, 2021)Strømmodeller er nyttige verktøy som kan brukes til å beskrive det fysiske miljøet i havet og i kystsonen. Havforskningsinstituttet (HI) bruker resultater fra slike modeller i svært mye av den forskningen og rådgivningen ... -
The hydrodynamic foundation for salmon lice dispersion modeling along the Norwegian coast
Asplin, Lars; Albretsen, Jon; Johnsen, Ingrid A.; Sandvik, Anne Dagrun (Peer reviewed; Journal article, 2020)Norway has complicated dynamics in the coastal ocean and in the fjords. In this area is also the largest salmon aquaculture industry in the world. The salmon industry is valuable for Norwegian economy worth more than 60 ... -
Hydrodynamisk spredningsmodell for lakselus og konsentrasjon av smittsomme kopepoditter
Sandvik, Anne Dagrun; Asplin, Lars; Albretsen, Jon; Bjørn, Pål Arne; Johnsen, Ingrid Askeland; Skardhamar, Jofrid; Myksvoll, Mari Skuggedal; Ådlandsvik, Bjørn (Rapport fra havforskningen;Nr. 12 - 2017, Research report, 2017) -
Impact of hatch-date on early life growth and survival of Mueller's pearlside (Maurolicus Muelleri) larvae, and life-history consequences
Folkvord, Arild; Gundersen, Geir; Albretsen, Jon; Asplin, Lars; Kaartvedt, Stein; Giske, Jarl (Journal article, 2015) -
The impact of surface currents on the wave climate in narrow fjords
Christakos, Konstantinos; Björkqvist, Jan-Victor; Breivik, Øyvind; Tuomi, Laura; Furevik, Birgitte Rugaard; Albretsen, Jon (Peer reviewed; Journal article, 2021)This study investigates the effect of surface currents on wind-generated waves in a complex coastal system with narrow fjords. The simulations are based on a phase-averaged wave model forced with surface currents from a ... -
Impact of variable physical conditions and future increased aquaculture production on lice infestation pressure and its sustainability in Norway
Myksvoll, Mari Skuggedal; Sandvik, Anne Dagrun; Johnsen, Ingrid A.; Skardhamar, Jofrid; Albretsen, Jon (Peer reviewed; Journal article, 2020)Salmon lice infestation is a challenge for wild post-smolt salmon during migration from their natal river to the sea in several regions of Norway. The traffic-light management system regulates growth in the aquaculture ... -
Impact of variable physical conditions and future increased aquaculture production on lice infestation pressure and its sustainability in Norway
Myksvoll, Mari Skuggedal; Sandvik, Anne Dagrun; Johnsen, Ingrid Askeland; Skardhamar, Jofrid; Albretsen, Jon (Peer reviewed; Journal article, 2020)Salmon lice infestation is a challenge for wild post-smolt salmon during migration from their natal river to the sea in several regions of Norway. The traffic-light management system regulates growth in the aquaculture ... -
Impacts of salmon lice on mortality, marine migration distance and premature return in sea trout
Serra Llinares, Rosa Maria; Bøhn, Thomas; Karlsen, Ørjan; Nilsen, Rune; Freitas, Carla; Albretsen, Jon; Haraldstad, Tormod; Thorstad, Eva Bonsak; Elvik, Kristine Marit Schrøder; Bjørn, Pål Arne (Peer reviewed; Journal article, 2020)Brown trout Salmo trutta (L.) is a facultative anadromous species, where a portion of individuals in populations with access to the sea perform migrations to use the richer feeding resources. We investigated the effect of ... -
Implementation and evaluation of open boundary conditions for sea ice in a regional coupled ocean (ROMS) and sea ice (CICE) modeling system
Duarte, Pedro; Brændshøi, Jostein; Shcherbin, Dmitry; Barras, Pauline; Albretsen, Jon; Gusdal, Yvonne; Szapiro, Nicholas; Martinsen, Andreas Rostrup; Samuelsen, Annette; Wang, Keguang; Debernard, Jens Boldingh (Peer reviewed; Journal article, 2022)The Los Alamos Sea Ice Model (CICE) is used by several Earth system models where sea ice boundary conditions are not necessary, given their global scope. However, regional and local implementations of sea ice models require ... -
Kartfesting og klassifisering av marin natur på Svalbard – et prosjekt for Svalbards miljøvernfond
Bekkby, Trine; Albretsen, Jon; Kuipers, Boele; Renaud, Paul Eric; Gundersen, Hege; Włodarska-Kowalczuk, M (Research report, 2017)Dette prosjektet har hatt som mål å integrere, modellere og tilgjengeliggjøre marine grunnkart for Svalbard. Dyp, strøm, saltholdighet, temperatur, ulike terrengforhold (inkl. skråning, bassenger) og områder med skred og ... -
Kartlegging av fjordøkosystemene i Tana- og Porsangerfjorden - Råd og kunnskapsbidrag fra Havforskningsinstituttet i forbindelse med vurdering av en eventuell åpning av direktefiske etter reker med bunntrål i Tana- og Porsangerfjorden
Søvik, Guldborg; Nedreaas, Kjell Harald; Zimmermann, Fabian; Husson, Berengere; Strand, Hans Kristian; Jørgensen, Lis Lindal; Strand, Mette; Thangstad, Trude Hauge; Hansen, Agneta; Båtevik, Thea; Albretsen, Jon; Staby, Arved (Rapport fra havforskningen;2020 - 39, Research report, 2020)Porsanger- og Tanafjorden har siden tidlig på 1970-tallet vært stengt for reketråling, men vurderes nå åpnet igjen. I den anledning ba Fiskeridirektoratet Havforskningsinstituttet utarbeide en plan for kartlegging av ... -
Kunnskapsstatus lakselus 2020 - Effekt av lakselus på vill laksefisk (2010-2019)
Karlsen, Ørjan; Albretsen, Jon; Asplin, Lars; Bjørn, Pål Arne; Bøhn, Thomas; Johnsen, Ingrid Askeland; Lehmann, Gunnar Bekke; Myksvoll, Mari Skuggedal; Nilsen, Rune; Sandvik, Anne Dagrun; Serra Llinares, Rosa Maria; Skardhamar, Jofrid; Ådlandsvik, Bjørn (Rapport fra havforskningen;2020 - 23, Research report, 2020) -
Lemon sole Microstomus kitt in the northern North Sea: a multidisciplinary approach to the early life-history dynamics
Geffen, Audrey J.; Albretsen, Jon; Huwer, Bastian; Nash, Richard David Marriott (Peer reviewed; Journal article, 2021)Lemon sole Microstomus kitt is a commercially valuable flatfish species that occurs in shelf waters around the northeast Atlantic. Only the most basic life-history information is available for the North Sea. Spawning is ... -
Linking bacterial community structure to advection and environmental impact along a coast-fjord gradient of the Sognefjord, western Norway
Storesund, Julia Endresen; Sandaa, Ruth-Anne; Thingstad, T. Frede; Asplin, Lars; Albretsen, Jon; Erga, Svein Rune (Peer reviewed; Journal article, 2017) -
Marin plast i Skagerrak - Kartlegging og spredningsmodellering
Albretsen, Jon; Huserbråten, Mats Brockstedt Olsen; Lyngvær Mathisen, Hege; Naustvoll, Lars Johan (Rapport fra havforskningen;38-2018, Research report, 2018) -
Marine naturverdier i Telemark – status, trusler og muligheter. Innspill til kystsoneplan for Telemark.
Rinde, Eli; Olsen, Marianne; Steen, Henning; Dahl, Einar; Espeland, Sigurd Heiberg; Albretsen, Jon (NIVA-rapport, Research report, 2018)Denne rapporten er skrevet på oppdrag for Telemark fylkeskommune. Rapporten gir en kunnskapsstatus over forekomst og utbredelse av marine naturverdier, deres tilstand og hvilke kjente trusler disse er utsatt for med hensyn ... -
Mind the depth: The vertical dimension of a small-scale coastal fishery shapes selection on species, size, and sex in wrasses
Halvorsen, Kim Aleksander Tallaksen; Sørdalen, Tonje Knutsen; Larsen, Torkel; Browman, Howard; Rafoss, Trond; Albretsen, Jon; Skiftesvik, Anne Berit (Peer reviewed; Journal article, 2020)Small‐scale fisheries (SSFs) tend to target shallow waters, but the depth distributions of coastal fish can vary depending on species, size, and sex. This creates a scope for a form of fishing selectivity that has received ... -
Modeling key processes affecting Al speciation and transport in estuaries
Simonsen, Magne; Teien, Hans-Christian; Lind, Ole Christian; Sætra, Øyvind; Albretsen, Jon; Salbu, Brit (Journal article; Peer reviewed, 2019)Assessments of the impacts of aluminium (Al) to aquatic organisms in estuarine waters have suffered from the lack of available models that can accurately predict the presence of toxic physico-chemical forms (species) of ... -
Modeling the Distribution of Habitat-Forming, Deep-Sea Sponges in the Barents Sea: The Value of Data
Gonzalez-Mirelis, Genoveva; Ross, Rebecca; Albretsen, Jon; Buhl-Mortensen, Pål (Peer reviewed; Journal article, 2021)The use of species occurrence as a proxy for habitat type is widespread, probably because it allows the use of species distribution modeling (SDM) to cost-effectively map the distribution of e.g., vulnerable marine ecosystems. ...