Jo Arve Alfredsen

About

Jo Arve Alfredsen (born 1969) has been an Associate professor at the Department of Engineering Cybernetics since 2004. He has a PhD and a Master in Engineering Cybernetics from NTNU and belongs to the research group on Automation in Fisheries and Aquaculture.

Research

Jo Arve’s research area is focused on how automation in a broad sense can be applied to enhance the design and operation of marine production and harvesting systems and for exploration of the seas. Important topics include systems biology, mathematical modelling, and specialized instrumentation, sensors and control systems.

Present research includes:

Mathematical modelling, numerical simulation and analysis of marine biological systems including physiology, ecology and behavior of fish and other marine organisms under culture or free-ranging conditions
Monitoring, estimation and control of aquaculture production systems for plankton, fish larvae and juveniles, and on-growing fish
Instrumentation systems and integrated sensor solutions for aquaculture production systems and monitoring of marine life
Fish telemetry technology

Teaching

Jo Arve is currently responsible for the following courses:

Course code	Course title
TTK4155	Industrial and Embedded Computer Systems Design
TTK8108	Topics in Fisheries and Aquaculture Cybernetics for PhD students
TTK15	Fish telemetry
-	Teknostart

He also coordinates the specialization study in fisheries and aquaculture cybernetics.

Several Master projects or specialization projects (fordypningsprosjekt) are currently available in the areas of automation in fisheries and aquaculture and marine instrumentation. If you are looking for opportunities in these areas you are invited to contact Jo Arve for suggestions.

Publications

2022

Dallolio, Alberto; Øveraas, Henning; Alfredsen, Jo Arve; Fossen, Thor Inge; Johansen, Tor Arne. (2022) Design and Validation of a Course Control System for a Wave-Propelled Unmanned Surface Vehicle. Field Robotics
Academic article
Dallolio, Alberto; Bjerck, Helge Bostwick; Urke, Henning Andre; Alfredsen, Jo Arve. (2022) A Persistent Sea-Going Platform for Robotic Fish Telemetry Using a Wave-Propelled USV: Technical Solution and Proof-of-Concept. Frontiers in Marine Science
Academic article
Alver, Morten; Føre, Martin; Alfredsen, Jo Arve. (2022) Predicting oxygen levels in Atlantic salmon (Salmo salar) sea cages. Aquaculture
Academic article

2021

Bjerck, Helge Bostwick; Urke, Henning Andre; Haugen, Thrond Oddvar; Alfredsen, Jo Arve; Ulvund, John Birger; Kristensen, Torstein. (2021) Synchrony and multimodality in the timing of Atlantic salmon smolt migration in two Norwegian fjords. Scientific Reports
Academic article
Dallolio, Alberto; Alfredsen, Jo Arve; Fossen, Thor Inge; Johansen, Tor Arne. (2021) Experimental Validation of a Nonlinear Wave Encounter Frequency Estimator Onboard a Wave-Propelled USV. IFAC-PapersOnLine
Academic article
Føre, Martin; Svendsen, Eirik; Økland, Finn; Gräns, Albin; Alfredsen, Jo Arve; Finstad, Bengt; Hedger, Richard David; Uglem, Ingebrigt. (2021) Heart rate and swimming activity as indicators of post-surgical recovery time of Atlantic salmon (Salmo salar). Animal Biotelemetry
Academic article
Svendsen, Eirik; Føre, Martin; Randeberg, Lise Lyngsnes; Alfredsen, Jo Arve. (2021) Design of a novel biosensor implant for farmed Atlantic salmon (Salmo salar).
Academic chapter
Jonsdottir, Kristbjørg Edda; Pascal, Klebert; Volent, Zsolt; Alfredsen, Jo Arve. (2021) Characteristic current flow through a stocked conical sea-cage with permeable lice shielding skirt. Ocean Engineering
Academic article
Svendsen, Eirik; Økland, Finn; Føre, Martin; Randeberg, Lise Lyngsnes; Finstad, Bengt; Olsen, Rolf Erik; Alfredsen, Jo Arve. (2021) Optical measurement of tissue perfusion changes as an alternative to electrocardiography for heart rate monitoring in Atlantic salmon (Salmo salar). Animal Biotelemetry
Academic article
Jónsdóttir, Kristbjörg Edda; Volent, Zsolt; Alfredsen, Jo Arve. (2021) Current flow and dissolved oxygen in a full-scale stocked fish-cage with and without lice shielding skirts. Applied Ocean Research
Academic article
Ulvund, John Birger; Engebretsen, Solveig; Alfredsen, Jo Arve; Kristensen, Torstein; Urke, Henning André; Jansen, Peder A.. (2021) Behavioural response of farmed Atlantic salmon (Salmo salar L.) to artificial underwater lights: Wavelet analysis of acoustic telemetry data. Aquacultural Engineering
Academic article
Alfredsen, Knut; Urke, Henning Andre; Kristensen, Torstein; Kvakland, Marte; Grønningsæter, Åge; Hagen, Anders Gjørwad; Alfredsen, Jo Arve. (2021) An acoustic sensor transmitter for in situ assessment of water quality and fish behaviour during chemical treatment of a parasite-infected river system: tag design and practical use. Animal Biotelemetry
Academic article

2020

Aas, Turid Synnøve; Ytrestøyl, Trine; Åsgård, Torbjørn Einar; Skøien, Kristoffer Rist; Alver, Morten; Alfredsen, Jo Arve. (2020) Feed intake in Atlantic salmon fed with or without surface spreading of feed. Journal of Agricultural and Marine Sciences (JAMS)
Academic article
Svendsen, Eirik; Føre, Martin; Økland, Finn; Gräns, Albin; Hedger, Richard David; Alfredsen, Jo Arve; Uglem, Ingebrigt; Rosten, Carolyn; Frank, Kevin; Erikson, Ulf Gøran. (2020) Heart rate and swimming activity as stress indicators for Atlantic salmon (Salmo salar). Aquaculture
Academic article
Hassan, Waseem; Føre, Martin; Pedersen, Magnus Oshaug; Alfredsen, Jo Arve. (2020) A new method for measuring free-ranging fish swimming speed in commercial marine farms using Doppler principle. IEEE Sensors Journal
Academic article
Kruusmaa, Maarja; Gkliva, R.; Tuhtan, J.A.; Tuvikene, A.; Alfredsen, Jo Arve. (2020) Salmon behavioural response to robots in an aquaculture sea cage. Royal Society Open Science
Academic article
Jónsdóttir, Kristbjörg Edda; Volent, Zsolt; Alfredsen, Jo Arve. (2020) Dynamics of dissolved oxygen inside salmon sea-cages with lice shielding skirts at two hydrographically different sites. Aquaculture Environment Interactions
Academic article

2019

Hassan, Waseem; Føre, Martin; Ulvund, John Birger; Alfredsen, Jo Arve. (2019) Internet of Fish: Integration of acoustic telemetry with LPWAN for efficient real-time monitoring of fish in marine farms. Computers and Electronics in Agriculture
Academic article
Hassan, Waseem; Føre, Martin; Urke, Henning Andre; Kristensen, Torstein; Ulvund, John Birger; Alfredsen, Jo Arve. (2019) System for Real-Time Positioning and Monitoring of Fish in Commercial Marine Farms Based on Acoustic Telemetry and Internet of Fish (IoF).
Academic chapter
Jónsdóttir, Kristbjörg Edda; Hvas, Malthe; Alfredsen, Jo Arve; Føre, Martin; Alver, Morten; Bjelland, Hans Vanhauwaert; Oppedal, Frode. (2019) Fish Welfare Based Classification Method of Ocean Current Speeds at Aquaculture Sites. Aquaculture Environment Interactions
Academic article
Dallolio, Alberto; Bendik Olai, Agdal; Zolich, Artur Piotr; Alfredsen, Jo Arve; Johansen, Tor Arne. (2019) Long-Endurance Green Energy Autonomous Surface Vehicle Control Architecture.
Academic chapter
Hassan, Waseem; Føre, Martin; Pedersen, Magnus Oshaug; Alfredsen, Jo Arve. (2019) A novel Doppler based speed measurement technique for individual free-ranging fish.
Academic chapter

2018

Føre, Martin; Svendsen, Eirik; Alfredsen, Jo Arve; Uglem, Ingebrigt; Bloecher, Nina; Sveier, Harald; Sunde, Leif Magne; Frank, Kevin. (2018) Using acoustic telemetry to monitor the effects of crowding and delousing procedures on farmed Atlantic salmon (Salmo salar). Aquaculture
Academic article
Skøien, Kristoffer Rist; Alver, Morten; Alfredsen, Jo Arve. (2018) Modelling and simulation of rotary feed spreaders with application to sea cage aquaculture - A study of common and alternative designs. Aquacultural Engineering
Academic article
Føre, Martin; Alver, Morten; Alfredsen, Jo Arve; Senneset, Gunnar; Espmark, Åsa Maria Olofsdotter; Terjesen, Bendik Fyhn. (2018) Modelling how the physical scale of experimental tanks affects salmon growth performance. Aquaculture
Academic article
Yan, Sheng; Alfredsen, Jo Arve. (2018) Infrared depth camera system for real-time european lobster behavior analysis.
Academic chapter
Haugaløkken, Bent Oddvar Arnesen; Sandøy, Stian Skaalvik; Schjølberg, Ingrid; Alfredsen, Jo Arve; Utne, Ingrid Bouwer. (2018) Probabilistic Localization and Mapping of Flexible Underwater Structures using Octomap.
Academic chapter
jain, praveen; Zolich, Artur Piotr; Erstorp, E; Johansen, Tor Arne; Alfredsen, Jo Arve; Aguiar, A Pedro; Kuttenkeuler, J; Sousa, João Borges de. (2018) Localization of an Acoustic Fish-Tag using the Time-of-Arrival Measurements: Preliminary results using eXogenous Kalman Filter. Proceedings of IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS)
Academic article

2017

Føre, Martin; Svendsen, Eirik; Frank, Kevin; Schellewald, Christian; Sunde, Leif Magne; Stahl, Annette; Alfredsen, Jo Arve. (2017) LAKSIT:Telemetri og maskinsyn for overvåkning og dokumentasjon av fiskevelferd i avlusningsprosesser. Norsk Fiskeoppdrett
Popular science article
Yan, Sheng; Alfredsen, Jo Arve. (2017) Automatic Video Analysis of Stage IV European Lobster Juveniles for their Aggressive Behavior Assessment.
Academic chapter
Zolich, Artur Piotr; Johansen, Tor Arne; Alfredsen, Jo Arve; Kuttenkeuler, J; Erstorp, E. (2017) A Formation of Unmanned Vehicles for Tracking of an Acoustic Fish-Tag.
Academic chapter
Føre, Martin; Frank, Kevin; Dempster, T; Alfredsen, Jo Arve; Høy, Erik. (2017) Biomonitoring using tagged sentinel fish and acoustic telemetry in commercial salmon aquaculture: A feasibility study. Aquacultural Engineering
Academic article
Skøien, Kristoffer Rist; Alver, Morten; Lundregan, Sarah; Frank, Kevin; Alfredsen, Jo Arve. (2017) Effects of wind on surface feed distribution in sea cage aquaculture: A simulation study.
Academic chapter
Yan, Sheng; Alfredsen, Jo Arve. (2017) Real time lobster posture estimation for behavior research.
Academic chapter
Føre, Martin; Frank, Kevin; Norton, Tomas; Svendsen, Eirik; Alfredsen, Jo Arve; Dempster, Timothy David; Eguiraun, Harkaitz; Watson, Win; Stahl, Annette; Sunde, Leif Magne. (2017) Precision fish farming: A new framework to improve production in aquaculture. Biosystems Engineering
Academic article

2016

Skøien, Kristoffer Rist; Alver, Morten; Zolich, Artur Piotr; Alfredsen, Jo Arve. (2016) Feed spreaders in sea cage aquaculture – Motion characterization and measurement of spatial pellet distribution using an unmanned aerial vehicle. Computers and Electronics in Agriculture
Academic article
Zolich, Artur Piotr; Alfredsen, Jo Arve; Johansen, Tor Arne; Skøien, Kristoffer Rist. (2016) A communication bridge between underwater sensors and unmanned vehicles using a surface wireless sensor network - design and validation.
Academic chapter
Alver, Morten; Skøien, Kristoffer Rist; Føre, Martin; Aas, Turid Synnøve; Oehme, Maike; Alfredsen, Jo Arve. (2016) Modelling of surface and 3D pellet distribution in Atlantic salmon (Salmo salar L.) cages. Aquacultural Engineering
Academic article
Føre, Martin; Alver, Morten; Alfredsen, Jo Arve; Marafioti, Giancarlo; Senneset, Gunnar; Birkevold, Jens; Willumsen, Finn Victor; Lange, Guttorm; Espmark, Åsa Maria Olofsdotter; Terjesen, Bendik Fyhn. (2016) Modelling growth performance and feeding behaviour of Atlantic salmon (Salmo salar L.) in commercial-size aquaculture net pens: Model details and validation through full-scale experiments. Aquaculture
Academic article
Skøien, Kristoffer Rist; Aas, Turid Synnøve; Alver, Morten; Romarheim, Odd Helge; Alfredsen, Jo Arve. (2016) Intrinsic settling rate and spatial diffusion properties of extruded fish feed pellets. Aquacultural Engineering
Academic article

2015

Skøien, Kristoffer Rist; Alver, Morten; Alfredsen, Jo Arve. (2015) Modelling spatial surface pellet distribution from rotary pneumatic feed spreaders.
Academic chapter
Føre, Martin; Frank, Kevin; Høy, Erik; Alfredsen, Jo Arve; Dempster, Tim; Sunde, Leif Magne. (2015) Trådløs dataoverføring under vann muliggjør online overvåkning av laksens tilstand og velferd. Norsk Fiskeoppdrett
Popular science article

2014

Skøien, Kristoffer Rist; Alfredsen, Jo Arve. (2014) Feeding of large-scale fish farms: Motion characterization of a pneumatic rotor feed spreader.
Academic chapter
Skøien, Kristoffer Rist; Alver, Morten; Føre, Martin; Alfredsen, Jo Arve. (2014) Modellbasert fôrdistribusjon i oppdrett. Teknisk Ukeblad
Professional article
Skøien, Kristoffer Rist; Alver, Morten; Alfredsen, Jo Arve. (2014) A Computer Vision Approach for Detection and Quantification of Feed Particles in Marine Fish Farms.
Academic chapter

2013

Føre, Martin; Dempster, Timothy David; Alfredsen, Jo Arve; Oppedal, Frode. (2013) Modelling of Atlantic salmon (Salmo salar L.) behaviour in sea-cages: Using artificial light to control swimming depth. Aquaculture
Academic article
Alfredsen, Jo Arve; Alver, Morten; Eriksen, Tor-Inge J. (2013) Architecture for automation and telepresence in a marine hatchery laboratory. Communications in agricultural and applied biological sciences
Conference abstract
Alfredsen, Jo Arve; Marafioti, Giancarlo. (2013) Hvor mye laks er det egentlig i merden? Del 3: Optimal biomasseestimering ved kombinasjon av målinger og vekstmodell. Norsk Fiskeoppdrett
Popular science article
Urke, Henning Andre; Kristensen, Torstein; Ulvund, John Birger; Alfredsen, Jo Arve. (2013) Riverine and fjord migration of wild and hatchery-reared Atlantic salmon smolts. Fisheries Management and Ecology
Academic article

2011

Føre, Martin; Alfredsen, Jo Arve; Åge, Grønningsæter. (2011) Development of two telemetry-based systems for monitoring the feeding behaviour of Atlantic salmon (Salmo salar L.) in aquaculture sea-cages. Computers and Electronics in Agriculture
Academic article

2010

Alver, Morten; Alfredsen, Jo Arve; Øie, Gunvor; Storøy, Werner; Olsen, Yngvar. (2010) Automatic control of growth and density in rotifer cultures. Aquacultural Engineering
Academic article

2009

Øie, Gunvor; Alver, Morten; Alfredsen, Jo Arve; Kjørsvik, Elin; Attramadal, Kari; Olsen, Yngvar. (2009) Status and challenges in cod larval production. Special Publications (European Aquaculture Society)
Conference abstract
Føre, Martin; Dempster, T; Alfredsen, Jo Arve; Johansen, V; Johansson, D. (2009) Modelling of Atlantic salmon (Salmo salar L.) behaviour in sea-cages: A Lagrangian approach. Aquaculture
Academic article

2008

Alver, Morten; Tennøy, Tormod; Alfredsen, Jo Arve; Øie, Gunvor; Olsen, Yngvar. (2008) Automatic control of rotifer density in larval first feeding tanks. Control Engineering Practice
Academic article

2007

Alfredsen, Jo Arve; Holand, Bård; Solvang-Garten, Torfinn; Uglem, I. (2007) Feeding activity and opercular pressure transients in Atlantic salmon (Salmo salar L.): application to feeding management in fish farming. Hydrobiologia
Academic article
Alfredsen, Jo Arve; Holand, Bård; Solvang-Garten, Torfinn; Uglem, I. (2007) Feeding activity and opercular pressure transients in Atlantic salmon (Salmo salar L.): applications to feeding management in fish farming.
Academic chapter
Alver, Morten; Alfredsen, Jo Arve; Øie, Gunvor. (2007) Estimating larval density in cod (Gadus morhua) first feeding tanks using measurements of feed density and larval growth rates. Aquaculture
Academic article
Alver, Morten; Tennoy, T; Alfredsen, Jo Arve; Oie, G. (2007) Automatic measurement of rotifer Brachionus plicatilis densities in first feeding tanks. Aquacultural Engineering
Academic article

2006

Alver, Morten; Alfredsen, Jo Arve; Olsen, Yngvar. (2006) An individual-based population model for rotifer (Brachionus plicatilis) cultures. Hydrobiologia
Academic article

2005

Alver, Morten; Alfredsen, Jo Arve; Øie, Gunvor. (2005) A system for model based biomass estimation of larvae in intensive cod larvicultures. Aquaculture International
Academic article

2004

Alver, Morten; Alfredsen, Jo Arve; Sigholt, Trygve. (2004) Dynamic modelling of pellet distribution in Atlantic salmon (Salmo salar L.) cages. Aquacultural Engineering
Academic article

Journal publications

Aas, Turid Synnøve; Ytrestøyl, Trine; Åsgård, Torbjørn Einar; Skøien, Kristoffer Rist; Alver, Morten; Alfredsen, Jo Arve. (2020) Feed intake in Atlantic salmon fed with or without surface spreading of feed. Journal of Agricultural and Marine Sciences (JAMS)
Academic article
Føre, Martin; Dempster, Timothy David; Alfredsen, Jo Arve; Oppedal, Frode. (2013) Modelling of Atlantic salmon (Salmo salar L.) behaviour in sea-cages: Using artificial light to control swimming depth. Aquaculture
Academic article
Bjerck, Helge Bostwick; Urke, Henning Andre; Haugen, Thrond Oddvar; Alfredsen, Jo Arve; Ulvund, John Birger; Kristensen, Torstein. (2021) Synchrony and multimodality in the timing of Atlantic salmon smolt migration in two Norwegian fjords. Scientific Reports
Academic article
Dallolio, Alberto; Øveraas, Henning; Alfredsen, Jo Arve; Fossen, Thor Inge; Johansen, Tor Arne. (2022) Design and Validation of a Course Control System for a Wave-Propelled Unmanned Surface Vehicle. Field Robotics
Academic article
Dallolio, Alberto; Alfredsen, Jo Arve; Fossen, Thor Inge; Johansen, Tor Arne. (2021) Experimental Validation of a Nonlinear Wave Encounter Frequency Estimator Onboard a Wave-Propelled USV. IFAC-PapersOnLine
Academic article
Føre, Martin; Svendsen, Eirik; Alfredsen, Jo Arve; Uglem, Ingebrigt; Bloecher, Nina; Sveier, Harald; Sunde, Leif Magne; Frank, Kevin. (2018) Using acoustic telemetry to monitor the effects of crowding and delousing procedures on farmed Atlantic salmon (Salmo salar). Aquaculture
Academic article
Alfredsen, Jo Arve; Holand, Bård; Solvang-Garten, Torfinn; Uglem, I. (2007) Feeding activity and opercular pressure transients in Atlantic salmon (Salmo salar L.): application to feeding management in fish farming. Hydrobiologia
Academic article
Alver, Morten; Alfredsen, Jo Arve; Sigholt, Trygve. (2004) Dynamic modelling of pellet distribution in Atlantic salmon (Salmo salar L.) cages. Aquacultural Engineering
Academic article
Føre, Martin; Svendsen, Eirik; Frank, Kevin; Schellewald, Christian; Sunde, Leif Magne; Stahl, Annette; Alfredsen, Jo Arve. (2017) LAKSIT:Telemetri og maskinsyn for overvåkning og dokumentasjon av fiskevelferd i avlusningsprosesser. Norsk Fiskeoppdrett
Popular science article
Føre, Martin; Svendsen, Eirik; Økland, Finn; Gräns, Albin; Alfredsen, Jo Arve; Finstad, Bengt; Hedger, Richard David; Uglem, Ingebrigt. (2021) Heart rate and swimming activity as indicators of post-surgical recovery time of Atlantic salmon (Salmo salar). Animal Biotelemetry
Academic article
Svendsen, Eirik; Føre, Martin; Økland, Finn; Gräns, Albin; Hedger, Richard David; Alfredsen, Jo Arve; Uglem, Ingebrigt; Rosten, Carolyn; Frank, Kevin; Erikson, Ulf Gøran. (2020) Heart rate and swimming activity as stress indicators for Atlantic salmon (Salmo salar). Aquaculture
Academic article
Skøien, Kristoffer Rist; Alver, Morten; Alfredsen, Jo Arve. (2018) Modelling and simulation of rotary feed spreaders with application to sea cage aquaculture - A study of common and alternative designs. Aquacultural Engineering
Academic article
Skøien, Kristoffer Rist; Alver, Morten; Zolich, Artur Piotr; Alfredsen, Jo Arve. (2016) Feed spreaders in sea cage aquaculture – Motion characterization and measurement of spatial pellet distribution using an unmanned aerial vehicle. Computers and Electronics in Agriculture
Academic article
Dallolio, Alberto; Bjerck, Helge Bostwick; Urke, Henning Andre; Alfredsen, Jo Arve. (2022) A Persistent Sea-Going Platform for Robotic Fish Telemetry Using a Wave-Propelled USV: Technical Solution and Proof-of-Concept. Frontiers in Marine Science
Academic article
Øie, Gunvor; Alver, Morten; Alfredsen, Jo Arve; Kjørsvik, Elin; Attramadal, Kari; Olsen, Yngvar. (2009) Status and challenges in cod larval production. Special Publications (European Aquaculture Society)
Conference abstract
Hassan, Waseem; Føre, Martin; Ulvund, John Birger; Alfredsen, Jo Arve. (2019) Internet of Fish: Integration of acoustic telemetry with LPWAN for efficient real-time monitoring of fish in marine farms. Computers and Electronics in Agriculture
Academic article
Alver, Morten; Alfredsen, Jo Arve; Olsen, Yngvar. (2006) An individual-based population model for rotifer (Brachionus plicatilis) cultures. Hydrobiologia
Academic article
Alver, Morten; Alfredsen, Jo Arve; Øie, Gunvor. (2005) A system for model based biomass estimation of larvae in intensive cod larvicultures. Aquaculture International
Academic article
Alver, Morten; Føre, Martin; Alfredsen, Jo Arve. (2022) Predicting oxygen levels in Atlantic salmon (Salmo salar) sea cages. Aquaculture
Academic article
Føre, Martin; Alver, Morten; Alfredsen, Jo Arve; Senneset, Gunnar; Espmark, Åsa Maria Olofsdotter; Terjesen, Bendik Fyhn. (2018) Modelling how the physical scale of experimental tanks affects salmon growth performance. Aquaculture
Academic article
Føre, Martin; Alfredsen, Jo Arve; Åge, Grønningsæter. (2011) Development of two telemetry-based systems for monitoring the feeding behaviour of Atlantic salmon (Salmo salar L.) in aquaculture sea-cages. Computers and Electronics in Agriculture
Academic article
Hassan, Waseem; Føre, Martin; Pedersen, Magnus Oshaug; Alfredsen, Jo Arve. (2020) A new method for measuring free-ranging fish swimming speed in commercial marine farms using Doppler principle. IEEE Sensors Journal
Academic article
Alver, Morten; Skøien, Kristoffer Rist; Føre, Martin; Aas, Turid Synnøve; Oehme, Maike; Alfredsen, Jo Arve. (2016) Modelling of surface and 3D pellet distribution in Atlantic salmon (Salmo salar L.) cages. Aquacultural Engineering
Academic article
Skøien, Kristoffer Rist; Alver, Morten; Føre, Martin; Alfredsen, Jo Arve. (2014) Modellbasert fôrdistribusjon i oppdrett. Teknisk Ukeblad
Professional article
Alver, Morten; Tennøy, Tormod; Alfredsen, Jo Arve; Øie, Gunvor; Olsen, Yngvar. (2008) Automatic control of rotifer density in larval first feeding tanks. Control Engineering Practice
Academic article
Føre, Martin; Alver, Morten; Alfredsen, Jo Arve; Marafioti, Giancarlo; Senneset, Gunnar; Birkevold, Jens; Willumsen, Finn Victor; Lange, Guttorm; Espmark, Åsa Maria Olofsdotter; Terjesen, Bendik Fyhn. (2016) Modelling growth performance and feeding behaviour of Atlantic salmon (Salmo salar L.) in commercial-size aquaculture net pens: Model details and validation through full-scale experiments. Aquaculture
Academic article
Føre, Martin; Frank, Kevin; Dempster, T; Alfredsen, Jo Arve; Høy, Erik. (2017) Biomonitoring using tagged sentinel fish and acoustic telemetry in commercial salmon aquaculture: A feasibility study. Aquacultural Engineering
Academic article
Jónsdóttir, Kristbjörg Edda; Hvas, Malthe; Alfredsen, Jo Arve; Føre, Martin; Alver, Morten; Bjelland, Hans Vanhauwaert; Oppedal, Frode. (2019) Fish Welfare Based Classification Method of Ocean Current Speeds at Aquaculture Sites. Aquaculture Environment Interactions
Academic article
Jonsdottir, Kristbjørg Edda; Pascal, Klebert; Volent, Zsolt; Alfredsen, Jo Arve. (2021) Characteristic current flow through a stocked conical sea-cage with permeable lice shielding skirt. Ocean Engineering
Academic article
Alfredsen, Jo Arve; Alver, Morten; Eriksen, Tor-Inge J. (2013) Architecture for automation and telepresence in a marine hatchery laboratory. Communications in agricultural and applied biological sciences
Conference abstract
Alfredsen, Jo Arve; Marafioti, Giancarlo. (2013) Hvor mye laks er det egentlig i merden? Del 3: Optimal biomasseestimering ved kombinasjon av målinger og vekstmodell. Norsk Fiskeoppdrett
Popular science article
Kruusmaa, Maarja; Gkliva, R.; Tuhtan, J.A.; Tuvikene, A.; Alfredsen, Jo Arve. (2020) Salmon behavioural response to robots in an aquaculture sea cage. Royal Society Open Science
Academic article
Jónsdóttir, Kristbjörg Edda; Volent, Zsolt; Alfredsen, Jo Arve. (2020) Dynamics of dissolved oxygen inside salmon sea-cages with lice shielding skirts at two hydrographically different sites. Aquaculture Environment Interactions
Academic article
Føre, Martin; Dempster, T; Alfredsen, Jo Arve; Johansen, V; Johansson, D. (2009) Modelling of Atlantic salmon (Salmo salar L.) behaviour in sea-cages: A Lagrangian approach. Aquaculture
Academic article
Svendsen, Eirik; Økland, Finn; Føre, Martin; Randeberg, Lise Lyngsnes; Finstad, Bengt; Olsen, Rolf Erik; Alfredsen, Jo Arve. (2021) Optical measurement of tissue perfusion changes as an alternative to electrocardiography for heart rate monitoring in Atlantic salmon (Salmo salar). Animal Biotelemetry
Academic article
Urke, Henning Andre; Kristensen, Torstein; Ulvund, John Birger; Alfredsen, Jo Arve. (2013) Riverine and fjord migration of wild and hatchery-reared Atlantic salmon smolts. Fisheries Management and Ecology
Academic article
Jónsdóttir, Kristbjörg Edda; Volent, Zsolt; Alfredsen, Jo Arve. (2021) Current flow and dissolved oxygen in a full-scale stocked fish-cage with and without lice shielding skirts. Applied Ocean Research
Academic article
Alver, Morten; Alfredsen, Jo Arve; Øie, Gunvor. (2007) Estimating larval density in cod (Gadus morhua) first feeding tanks using measurements of feed density and larval growth rates. Aquaculture
Academic article
Føre, Martin; Frank, Kevin; Norton, Tomas; Svendsen, Eirik; Alfredsen, Jo Arve; Dempster, Timothy David; Eguiraun, Harkaitz; Watson, Win; Stahl, Annette; Sunde, Leif Magne. (2017) Precision fish farming: A new framework to improve production in aquaculture. Biosystems Engineering
Academic article
Alver, Morten; Tennoy, T; Alfredsen, Jo Arve; Oie, G. (2007) Automatic measurement of rotifer Brachionus plicatilis densities in first feeding tanks. Aquacultural Engineering
Academic article
Skøien, Kristoffer Rist; Aas, Turid Synnøve; Alver, Morten; Romarheim, Odd Helge; Alfredsen, Jo Arve. (2016) Intrinsic settling rate and spatial diffusion properties of extruded fish feed pellets. Aquacultural Engineering
Academic article
Føre, Martin; Frank, Kevin; Høy, Erik; Alfredsen, Jo Arve; Dempster, Tim; Sunde, Leif Magne. (2015) Trådløs dataoverføring under vann muliggjør online overvåkning av laksens tilstand og velferd. Norsk Fiskeoppdrett
Popular science article
jain, praveen; Zolich, Artur Piotr; Erstorp, E; Johansen, Tor Arne; Alfredsen, Jo Arve; Aguiar, A Pedro; Kuttenkeuler, J; Sousa, João Borges de. (2018) Localization of an Acoustic Fish-Tag using the Time-of-Arrival Measurements: Preliminary results using eXogenous Kalman Filter. Proceedings of IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS)
Academic article
Alver, Morten; Alfredsen, Jo Arve; Øie, Gunvor; Storøy, Werner; Olsen, Yngvar. (2010) Automatic control of growth and density in rotifer cultures. Aquacultural Engineering
Academic article
Ulvund, John Birger; Engebretsen, Solveig; Alfredsen, Jo Arve; Kristensen, Torstein; Urke, Henning André; Jansen, Peder A.. (2021) Behavioural response of farmed Atlantic salmon (Salmo salar L.) to artificial underwater lights: Wavelet analysis of acoustic telemetry data. Aquacultural Engineering
Academic article
Alfredsen, Knut; Urke, Henning Andre; Kristensen, Torstein; Kvakland, Marte; Grønningsæter, Åge; Hagen, Anders Gjørwad; Alfredsen, Jo Arve. (2021) An acoustic sensor transmitter for in situ assessment of water quality and fish behaviour during chemical treatment of a parasite-infected river system: tag design and practical use. Animal Biotelemetry
Academic article

Part of book/report

Skøien, Kristoffer Rist; Alfredsen, Jo Arve. (2014) Feeding of large-scale fish farms: Motion characterization of a pneumatic rotor feed spreader.
Academic chapter
Yan, Sheng; Alfredsen, Jo Arve. (2017) Automatic Video Analysis of Stage IV European Lobster Juveniles for their Aggressive Behavior Assessment.
Academic chapter
Zolich, Artur Piotr; Alfredsen, Jo Arve; Johansen, Tor Arne; Skøien, Kristoffer Rist. (2016) A communication bridge between underwater sensors and unmanned vehicles using a surface wireless sensor network - design and validation.
Academic chapter
Hassan, Waseem; Føre, Martin; Urke, Henning Andre; Kristensen, Torstein; Ulvund, John Birger; Alfredsen, Jo Arve. (2019) System for Real-Time Positioning and Monitoring of Fish in Commercial Marine Farms Based on Acoustic Telemetry and Internet of Fish (IoF).
Academic chapter
Alfredsen, Jo Arve; Holand, Bård; Solvang-Garten, Torfinn; Uglem, I. (2007) Feeding activity and opercular pressure transients in Atlantic salmon (Salmo salar L.): applications to feeding management in fish farming.
Academic chapter
Zolich, Artur Piotr; Johansen, Tor Arne; Alfredsen, Jo Arve; Kuttenkeuler, J; Erstorp, E. (2017) A Formation of Unmanned Vehicles for Tracking of an Acoustic Fish-Tag.
Academic chapter
Yan, Sheng; Alfredsen, Jo Arve. (2018) Infrared depth camera system for real-time european lobster behavior analysis.
Academic chapter
Svendsen, Eirik; Føre, Martin; Randeberg, Lise Lyngsnes; Alfredsen, Jo Arve. (2021) Design of a novel biosensor implant for farmed Atlantic salmon (Salmo salar).
Academic chapter
Skøien, Kristoffer Rist; Alver, Morten; Lundregan, Sarah; Frank, Kevin; Alfredsen, Jo Arve. (2017) Effects of wind on surface feed distribution in sea cage aquaculture: A simulation study.
Academic chapter
Dallolio, Alberto; Bendik Olai, Agdal; Zolich, Artur Piotr; Alfredsen, Jo Arve; Johansen, Tor Arne. (2019) Long-Endurance Green Energy Autonomous Surface Vehicle Control Architecture.
Academic chapter
Skøien, Kristoffer Rist; Alver, Morten; Alfredsen, Jo Arve. (2015) Modelling spatial surface pellet distribution from rotary pneumatic feed spreaders.
Academic chapter
Yan, Sheng; Alfredsen, Jo Arve. (2017) Real time lobster posture estimation for behavior research.
Academic chapter
Haugaløkken, Bent Oddvar Arnesen; Sandøy, Stian Skaalvik; Schjølberg, Ingrid; Alfredsen, Jo Arve; Utne, Ingrid Bouwer. (2018) Probabilistic Localization and Mapping of Flexible Underwater Structures using Octomap.
Academic chapter
Hassan, Waseem; Føre, Martin; Pedersen, Magnus Oshaug; Alfredsen, Jo Arve. (2019) A novel Doppler based speed measurement technique for individual free-ranging fish.
Academic chapter
Skøien, Kristoffer Rist; Alver, Morten; Alfredsen, Jo Arve. (2014) A Computer Vision Approach for Detection and Quantification of Feed Particles in Marine Fish Farms.
Academic chapter