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Ole-Kristian Hess-Erga

Senior Research Scientist, PhD

Projects 4
Publications 47

Email address: ole-kristian.hess-erga@niva.no
Phone number: +47 979 73 054
External profile: Cristin
Research section: Aquaculture

Related content

Projects (4)

AKVABY

A project that creates a communal research-based learning arena in aquaponics and urban cultivation for schools in Oslo with foundations in sustainability and circularity for the cities of the future.

Project period: 2024 - 2026

Biosecurity in RAS (recirculating aquaculture systems) (BRAS)

The main goal of the project is to strengthen biosecurity in RAS facilities with new knowledge about the sensitivity of pathogenic microorganisms to different biosecurity strategies and survival in RAS.

Project period: 2023 - 2025

NYBRØK - New wellboat knowledge - biological risk factors when using wellboats to transport and process salmon

The project is part of an initiative to optimize wellboat transport and processing of fish in wellboats.

Project period: 2022 - 2024

Publications (47)

Effekter av sink på laks under forhold relevante for brønnbåtsoperasjoner

Sara Calabrese, Rolf David Vogt, Endre Steigum, Frida Sol Svendsen, kristian Ulven, Alf Seljenes Dalum

Academic lecture

Recapturing sludge from Atlantic salmon production in closed containment systems in the sea

Sara Calabrese, Ole-Kristian Hess-Erga, Trine Dale, Trond Waldemar Rosten

Article in business/trade/industry journal

Water quality issues caused by zinc and gas supersaturation during simulated well boat operations of Atlantic salmon

Linda Andersen, Ivar Rønnestad, Alf Seljenes Dalum, Silje Stensby-Skjærvik, Kåre Segadal, Ole-Kristian Hess-Erga

Academic lecture

Kan laks få trykkfallsyke av brønnbåtoperasjoner?

Ivar Rønnestad, Alf Seljenes Dalum, Silje Stensby-Skjærvik, Kåre Segadal, Ole-Kristian Hess-Erga, Linda Andersen

Academic lecture

Monitoring system and operational routines of a small-scale aquaponic system in Oslo, Norway

Ole-Kristian Hess-Erga

Ny brønnbåtkunnskap - biologiske risikofaktorer ved bruk av brønnbåt til transport og behandling av laks (NYBRØK - 901788)

Ole-Kristian Hess-Erga, Sara Calabrese, Rolf David Vogt, Endre Steigum, Frida Sol Svendsen, Kamilla Furseth

Impact of particle load on water quality and microbiota in salmon recirculating aquaculture systems

Simen Fredriksen, Paulo Fernandes, Sujan Khadka, Ludvik Fiksdal, Stian Ringbakken Stenhaug, Sara Calabrese

Academic lecture

Laks påvirkes negativt av sink

Rolf David Vogt, Sara Calabrese, Endre Steigum, Frida Sol Svendsen, Kristian Ulven, Alf Dalum

Popular scientific article

2024 | Norsk Fiskeoppdrett

Kapittel 10 Andre helseproblemer hos oppdrettet laksefisk

Julie Svendsen, Brit Tørud, Anne Berit Olsen, Synne Grønbech, benedikte hansen bendiktsen, Arve Nilsen

Environmental, social and economic sustainability considerations of aquaponics. The case of an aquaponic system at a Norwegian high school

Gabrielle Hairabedian, Eléonore Maitre-Ekern, Ole-Kristian Hess-Erga, Anne Luise Ribeiro, Sondre Meland

Hvordan arbeider næringen med biosikkerhet i RAS?

Sondre Veberg Larsen, Sonal Jayesh Patel, Brit Tørud, Kamilla Furseth, Ole-Kristian Hess-Erga

Article in business/trade/industry journal

2024 | Norsk Fiskeoppdrett

Klasseromsmodellsystem for akvaponi i utdanningen

Gabrielle Hairabedian, Line Johanne Barkved, Ole-Kristian Hess-Erga, Anne Luise Ribeiro, Sondre Meland, Eléonore Maitre-Ekern

Classroom Model System for Aquaponics in Education

Gabrielle Hairabedian, Line Johanne Barkved, Ole-Kristian Hess-Erga, Anne Luise Ribeiro, Sondre Meland, Eléonore Maitre-Ekern

Er lav partikkelbelastning i RAS fordelaktig?

Ole-Kristian Hess-Erga, Paulo Fernandes, Sara Calabrese, Simen Fredriksen, Håkon Dahle, Mark Powell

Article in business/trade/industry journal

2023 | Norsk Fiskeoppdrett

Mariussen MS, Strøm V, Valseth ÅA, Vennemo K, Bjorbækmo MFM, Chen W, Furuseth IS, Bekkby T, Berg PR, Saesin P, Staalstrøm A, Walday MG, Kaste Ø, Ruus A, Hess-Erga O-K, Langaas S. Mulighetskartlegging for kystbaserte næringer i Viken – Indre Oslofjord og Drammensfjorden. Vista Analyse Report 2023/11. ISBN 978-82-8126-623-0. https://www.vista-analyse.no/site/assets/files/7886/va-rapport_2023- 11_mulighetskartlegging_for_kystbaserte_naeringer_i_viken.pdf

MS Mariussen, V Strøm, ÅA Valseth, K Vennemo, Marit Bjorbækmo, Wenting Chen

Kapittel 9 Andre helseproblemer for oppdrettet laksefisk

Geir Bornø, Ingunn Sommerset, Anne Berit Olsen, Synne Grønbech, Mona Cecilie Gjessing, Kristoffer Vale Nielsen

Var forurensning fra utfyllingsarbeid ved Northern Lights landanlegg årsaken til at mye laks døde etter avlusning i oppdrettsanlegget Ljøsøy N?

Jonny Beyer, Sondre Meland, Ole-Kristian Hess-Erga, Rolf David Vogt, Magnus Bjørn Drivdal, Even Thoen

Laks utviklet trykkfallsyke under simulert lasting

Ole-Kristian Hess-Erga, Torolf Storsul, Ivar Rønnestad, Kåre Segadal, Alf Seljenes Dalum, Alf Reidar Sandstad

Article in business/trade/industry journal

2023 | Norsk Fiskeoppdrett

Gassovermetning i oppdrettsnæringen, del 1. Hva betyr totalgasstrykk, trykkfall og når er det fare for bobledannelse

Ole-Kristian Hess-Erga, Torolf Storsul, Ivar Rønnestad, Kåre Segadal, Alf Seljenes Dalum, Alf Reidar Sandstad

Article in business/trade/industry journal

2023 | Norsk Fiskeoppdrett

Evaluation of factors influencing disinfection efficacy for aquaculture

Aina Charlotte Wennberg, Samantha Eslava Martins, Kamilla Furseth, August E.Dessen Tobiesen, Ole-Kristian Hess-Erga

Søknad, overvåking og kontroll med utslipp fra landbasert akvakultur

Ole-Kristian Hess-Erga, Kamilla Furseth, Trine Dale

Exploring central and peripheral appetite-regulating peptides in the brain and gastrointestinal tract in grow-out Atlantic halibut

Endre Lygre, Ana S. Gomes, Ole-Kristian Hess-Erga, Birgitta Norberg, Jonatan Nilsson, Ivar Rønnestad

Academic lecture

Assessing Stress Resilience After Smolt Transportation by Waterborne Cortisol and Feeding Behavior in a Commercial Atlantic Salmon (Salmo salar) Grow-Out Recirculating Aquaculture System

Erik Höglund, Paulo Fernandes, Paula Andrea Rojas-Tirado, Thomas Rundberget, Ole-Kristian Hess-Erga

Academic article

2022 | Frontiers in Physiology

Flow Cytometric Analysis of Bacterial Protein Synthesis: Monitoring Vitality After Water Treatment

Mathilde Lindivat, Gunnar Bratbak, Aud Larsen, Ole-Kristian Hess-Erga, Ingunn Alne Hoell

Academic article

2021 | Frontiers in Microbiology

Gastric evacuation in three sizes of grow-out Atlantic halibut Hippoglossus hippoglossus fed different pellets sizes

Endre Lygre, Ana S. Gomes, Ole-Kristian Hess-Erga, Birgitta Norberg, Jonatan Nilsson, Prescilla Perrichon

Academic lecture

Bioorthogonal Non-canonical Amino Acid Tagging Combined With Flow Cytometry for Determination of Activity in Aquatic Microorganisms

Mathilde Lindivat, Aud Larsen, Ole Kristian Hess-Erga, Gunnar Bratbak, Ingunn Hoell

Academic article

2020 | Frontiers in Microbiology

Opportunities for increased blue growth in coastal parts of Østfold

Øyvind Kaste, Einar Dahl, Federico Håland Gaeta, Ole-Kristian Hess-Erga, Kathrine Ivsett Johnsen, Henriette Othilie Bøe Kildahl

Microorganisms in ballast water: Disinfection, community dynamics, and implications for management

Ole-Kristian Hess-Erga, Javier Moreno-Andrés, Øivind Enger, Olav Vadstein

Academic literature review

2019 | Science of the Total Environment

Comparing flow cytometry and microscopy in the quantification of vital aquatic organisms in ballast water

Louis Peperzak, Eva-Maria Zetsche, Stephan Gollasch, Luis Felipe Artigas, Simon Bonato, Véronique Créach

Academic article

2018 | Journal of Marine Engineering & Technology

Generell resirkulering (RAS) Problemstillinger og vannkvalitet

Bjørn Olav Rosseland, Ole-Kristian Hess-Erga

Academic lecture

Bacterial Viability and Vitality: Application of Click Chemistry in Flow Cytometry

Mathilde Lindivat, Aud Larsen, Gunnar Bratbak, Ole-Kristian Hess-Erga, Ingunn Hoell

Establishment of a demonstration system for integrated production of fish and plants (aquaponics) at the Bergen Aquarium.

Ole-Kristian Hess-Erga, Åse Åtland, Olaug Vetti Kvam, Magne Berland, Espen Hansen, Geir Olav Melingen

Application of flow cytometry in ballast water analysis - biological aspects

Ingunn Hoell, Ranveig Ottøy Olsen, Ole-Kristian Hess-Erga, Gunnar Thuestad, Aud Larsen

Academic literature review

2017 | Management of Biological Invasions

Dual staining with CFDA-AM and SYTOX Blue in flow cytometry analysis of UV-irradiated Tetraselmis suecica to evaluate vitality

Ranveig Ottøy Olsen, Ole-Kristian Hess-Erga, Aud Larsen, Friederike Hoffmann, Gunnar Thuestad, Ingunn Alne Hoell

Academic article

2016 | Aquatic Biology

Ultraviolet radiation as a ballast water treatment strategy: Inactivation of phytoplankton measured with flow cytometry

Ranveig Ottøy Olsen, Friederike Hoffmann, Ole-Kristian Hess-Erga, Aud Larsen, Gunnar Thuestad, Ingunn Hoell

Academic article

2016 | Marine Pollution Bulletin

Generell resirkulering (RAS). Problemstillinger og vannkvalitet

Bjørn Olav Rosseland, Ole-Kristian Hess-Erga

Flow cytometric applicability to evaluate UV inactivation of phytoplankton in marine water samples

Ranveig Ottøy Olsen, Ole-Kristian Hess-Erga, Aud Larsen, Gunnar Thuestad, August E.Dessen Tobiesen, Ingunn Hoell

Academic article

2015 | Marine Pollution Bulletin

Vannkvalitet i marin yngelproduksjon

Åse Åtland, Ole-Kristian Hess-Erga, Bjørn Olav Rosseland, Torill Vik Johannessen

Monitoring and training program related to water quality and fish health in marine juvenile facilities

Ole-Kristian Hess-Erga, Torill Vik Johannessen, Åse Åtland

Sluttrapport - Artec pilot Dokumentasjon av vannkvalitet og fiskefysiologi i et pilotanlegg for resirkulering (Artec Pilot) og et gjennomstrømmingsanlegg

Ole-Kristian Hess-Erga, Torstein Kristensen, Robert Eliassen, Martin Haugmo Iversen

Generell resirkulering (RAS) Problemstillinger og vannkvalitet

Bjørn Olav Rosseland, Ole-Kristian Hess-Erga

Academic lecture

Konflikten mellom villaks og fiskeoppdrett – kan den løses gjennom endret produksjonsform?

Bjørn Olav Rosseland, Bendik Fyhn Terjesen, Ole-Kristian Hess-Erga

Academic lecture

New knowledge and Technologies for Closed Cycle Hydroponics

Silje Aase Wolff , Ann-Iren Kittang, Lisbeth Mehli, Irene Karoliussen, Ole-Kristian Hess-Erga, Mona Schiefloe

Academic lecture

Recirculation and water quality

Bjørn Olav Rosseland, Ole-Kristian Hess-Erga

Academic lecture

Recolonization by heterotrophic bacteria after UV irradiation or ozonation of seawater; a simulation of ballast water treatment

Ole-Kristian Hess-Erga, Bente Blomvågnes-Bakke, Olav Vadstein

Academic article

2010 | Water Research

Disinfection of seawater and implications for ballast water treatment

Ole-Kristian Hess-Erga

Doctoral dissertation

Biotic and abiotic particles protect marine heterotrophic bacteria during UV and ozone disinfection

Ole-Kristian Hess-Erga, Kari Attramadal, Olav Vadstein

Academic article

2008 | Aquatic Biology

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