My research is on seaweeds. Seaweeds are very important primary producers in the coastal area, they form habitats for myriads of associated animals, they can function as devices for measuring levels of heavy metals in the environment, and they can be harvested or cultured for food or valuable biochemical components such as agar and alginate. My main interests are seaweed ecology, and how seaweeds evolve and adapt to the environment. Some of the topics I study:

-        Evolution, morphological variation and speciation processes in the genus Fucus

-        Effects of invasive seaweeds on indigenous coastal communities

-        Changes in seaweed communities due to environmental impact and climate changes

Forskningsrapport

• Anders Nielsen; Torgils Fossen; Jan Ove Gjershaug et al. (2017). Assessment of the potential connection between Tilia trees and bumblebee Death. Opinion of the Panel on Alien organisms and trade in endangered species (CITES) of the Norwegian Scientific Committee for Food Safety. (ekstern lenke)
• Eivind Oug; Arne Jostein Bjørge; Jakob Gjøsæter et al. (2013). Utvikling av indikatoren «sårbare og truete arter» for Nordsjøen, Norskehavet og Barentshavet. En oversikt over forekomst og kunnskapsgrunnlag for truete arter og ansvarsarter i norske sjøområder. (ekstern lenke)
• Hugo de Boer; Maria Gulbrandsen Asmyhr; Hanne Hegre Grundt et al. (2016). Assessment of the risks to Norwegian biodiversity from the import and keeping of aquarium and garden pond plants. Opinion of the Panel on Alien Organisms and Trade in Endangered Species (CITES) of the Norwegian Scientific Committee for Food Safety. (ekstern lenke)
• Eli Knispel Rueness; Maria Gulbrandsen Asmyhr; Anders Endrestøl et al. (2016). Assessment of species listing proposals for CITES CoP17. Opinion of the Panel on Alien Organisms and Trade in Endangered Species (CITES) of the Norwegian Scientific Committee for Food Safety. (ekstern lenke)
• Vivian Husa; Erling Heggøy; Kjersti Sjøtun et al. (2012). Kartlegging av fremmede marine arter i Hordaland. (ekstern lenke)
• Anders Nielsen; Merethe Aasmo Finne; Maria Gulbrandsen Asmyhr et al. (2016). Assessment of the risks to Norwegian biodiversity from the import and keeping of terrestrial arachnids and insects. Opinion of the Panel on Alien Organisms and Trade in Endangered species of the Norwegian Scientific Committee for Food Safety. (ekstern lenke)
• Katharina Nøkling-Eide; Kjersti Sjøtun; Jan Rueness et al. (2022). BESTEMMELSESNØKLER TIL NORSKE MARINE MAKROALGER 4. METODER, ORDFORKLARINGER OG ARTSREGISTER. (ekstern lenke)
• Stein Fredriksen; Kjersti Sjøtun (2015). Risikovurdering ved utseting av ikke-stedegen tare. (ekstern lenke)
• Kjersti Sjøtun; Bernt Rydland Olsen; Sarah Fagertun Eggereide (2004). Biomass survey of Laminaria digitata in the Smøla area. (ekstern lenke)
• Eli Knispel Rueness; Luis Cadahia-Lorenzo; Kristian Hoel et al. (2017). Assessment of the risks associated with the import and release of hand-reared mallards for hunting purposes. Opinion of the Panel on Alien Organisms and Trade in Endangered Species (CITES) of the Norwegian Scientific Committee for Food Safety. (ekstern lenke)
• Stein Fredriksen; HR Skjoldal; Vivian Husa et al. (2011). Vurdering av eutrofisituasjonen i kystområder, med særlig fokus på Hardangerfjorden og Boknafjorden. (ekstern lenke)

Konferanseposter

• Eliana Ruiz Martinez; Aud Larsen; Ruth-Anne Sandaa et al. (2024). Phaeoviruses present in cultured and natural kelp species, Saccharina latissima and Laminaria hyperborea (Phaeophyceae, Laminariales), in Norway.. (ekstern lenke)
• Kjersti Hasle Enerstvedt; Monica Jordheim; Øyvind M Andersen et al. (2016). Analysis of Flavonoids in the Seagrass Zostera Marina L.. (ekstern lenke)
• Kjersti Sjøtun; Stein Fredriksen; Tove M. Gabrielsen et al. (2023). Mapping and DNA barcoding the brown algal diversity within the orders Ectocarpales, Ralfsiales and Sphacelariales in Norway. (ekstern lenke)
• Juan M Valero-Rodriguez; Kjersti Sjøtun; Angeliki Barouti et al. (2024). Effects of climate change on herbivory in macroalgae: a laboratory experiment. (ekstern lenke)

Vitenskapelig artikkel

• Mia M. B. Bengtsson; Kjersti Sjøtun; Julia Endresen Storesund et al. (2011). Utilization of kelp-derived carbon sources by kelp surface-associated bacteria. (ekstern lenke)
• Hanno Sandvik; Olga Hilmo; Snorre Henriksen et al. (2020). Alien species in Norway: Results from quantitative ecological impact assessments. (ekstern lenke)
• Caroline Susanne Armitage; Vivian Husa; Elzbieta Anna Petelenz-Kurdziel et al. (2017). Growth and competition in a warmer ocean: A field experiment with a non-native and two native habitat-building seaweeds. (ekstern lenke)
• Kjersti Sjøtun; Svenja Heesch; Jordi Rull Lluch et al. (2017). Unravelling the complexity of salt marsh ‘Fucus cottonii’ forms (Phaeophyceae, Fucales). (ekstern lenke)
• Kjersti Sjøtun; Vivian Husa; Lars Asplin et al. (2015). Climatic and environmental factors influencing occurrence and distribution of macroalgae – a fjord gradient revisited. (ekstern lenke)
• Eliana Ruiz Martinez; Dean A. Mckeown; Decland C. Schroeder et al. (2023). Phaeoviruses Present in Cultured and Natural Kelp Species, Saccharina latissima and Laminaria hyperborea (Phaeophyceae, Laminariales), in Norway. (ekstern lenke)
• Mia M. B. Bengtsson; Kjersti Sjøtun; Lise Øvreås (2010). Seasonal dynamics of bacterial biofilms on the kelp Laminaria hyperborea. (ekstern lenke)
• Pedro Miguel de Azevedo Ribeiro; Tonje Næss; Geir Dahle et al. (2022). Going With the Flow – Population Genetics of the Kelp Saccharina latissima (Phaeophyceae, Laminariales). (ekstern lenke)
• Kjersti Sjøtun; Caroline Susanne Armitage; Mette Eilertsen et al. (2021). Fauna associated with non-native Sargassum muticum (Fucales, Phaeophyceae) vary with thallus morphology and site type (sounds and bays). (ekstern lenke)
• Inga Kjersti Sjøtun; Vivian Husa; Viviana Peña (2008). Present distribution and possible vectors of introductions of the alga Heterosiphonia japonica (Ceramiales, Rhodophyta) in Europe. (ekstern lenke)
• Kjersti Hasle Enerstvedt; Anders Lundberg; Kjersti Sjøtun et al. (2017). Characterization and seasonal variation of individual flavonoids in Zostera marina and Zostera noltii from Norwegian coastal waters. (ekstern lenke)
• James A. Coyer; Galice Hoarau; Inga Kjersti Sjøtun et al. (2008). Being abundant is not enough: a decrease in effective population size over eight generations in a Norwegian population of the seaweed, Fucus serratus. (ekstern lenke)
• Alex Innes Thomson; Frederick I. Archer; Melinda Ann Coleman et al. (2021). Charting a course for genetic diversity in the UN Decade of Ocean Science. (ekstern lenke)
• Jan Rueness; Erling Heggøy; Vivian Husa et al. (2007). First report of the Japanese red alga Antithamnion nipponicum (Ceramiales, Rhodophyta) in Norway, an invasive species new to northern Europe. (ekstern lenke)
• Vivian Husa; Kjersti Sjøtun (2006). Vegetative reproduction in "Heterosiphonia japonica" (Dasyaceae, Ceramiales), an introduced red alga on European coasts. (ekstern lenke)
• Vivian Husa; Henning Steen; Kjersti Sjøtun (2014). Historical changes in macroalgal communities in Hardangerfjord (Norway). (ekstern lenke)
• Kjersti Sjøtun; Hartvig Christie; Jan Helge Fosså (2006). The combined effect of canopy shading and sea urchin grazing on recruitment in kelp forest (Laminaria hyperborea). (ekstern lenke)
• Caroline Susanne Armitage; Kjersti Sjøtun (2016). Codium fragile in Norway: subspecies identity and morphology. (ekstern lenke)
• Svein Håkon Lorentsen; Kjersti Sjøtun; David Grémillet (2010). Multi-trophic consequences of kelp harvest. (ekstern lenke)
• Luna M. van der Loos; Quinten Bafort; Samuel Bosch et al. (2024). Non-indigenous seaweeds in the Northeast Atlantic Ocean, the Mediterranean Sea and Macaronesia: a critical synthesis of diversity, spatial and temporal patterns. (ekstern lenke)
• Trevor T Bringloe; Kjersti Sjøtun; Gary W Saunders (2019). A DNA barcode survey of marine macroalgae from Bergen (Norway). (ekstern lenke)
• Kjersti Sjøtun; Erling Heggøy; Tove M. Gabrielsen et al. (2016). Dasya adela sp. nov. (Rhodophyta, Ceramiales), an enigmatic new Dasya from a landlocked fjord in southwest Norway. (ekstern lenke)
• Mari Vold Bjordal; Knut Helge Jensen; Kjersti Sjøtun (2019). A field study of the edible red alga Vertebrata lanosa (Rhodophyta). (ekstern lenke)
• Vivian Husa; Kjersti Sjøtun; Tor Eiliv Lein (2004). The newly introduced species Heterosiphonia japonica Yendo (Dasyaceae, Rhodophyta): geographical distribution and abundance at the Norwegian southwest coast. (ekstern lenke)
• Caroline Susanne Armitage; Kjersti Sjøtun (2017). Can an old alien benefit from rising ocean temperatures? An experimental and field study on the growth and local distribution of Codium fragile subsp. fragile (Chlorophyta). (ekstern lenke)
• Vivian Husa; Tina Kutti; Arne S Ervik et al. (2014). Regional impact from fin-fish farming in an intensive production area (Hardangerfjord, Norway). (ekstern lenke)
• V Husa; Kjersti Sjøtun; TE Lein (2004). The newly introduced species Heterosiphonia japonica Yendo (Dasyaceae, Rhodophyta): geographical distribution and abundance at the Norwegian southwest coast. (ekstern lenke)
• Hilde Elise Heldal; Kjersti Sjøtun (2010). Technetium-99 (Tc-99) in annual growth segments of knotted wrack (Ascophyllum nodosum). (ekstern lenke)
• Martin Bua Rønhovde; Catia Monteiro; David William Peter Dolan et al. (2025). Northern Norway Sporophytes of Saccharina latissima Display Distinct Gene Expression Profiles in Response to Temperature and Photoperiod. (ekstern lenke)
• Hanno Sandvik; Dag Dolmen; Reidar Elven et al. (2019). Alien plants, animals, fungi and algae in Norway: an inventory of neobiota. (ekstern lenke)
• Mia M. B. Bengtsson; Kjersti Sjøtun; Anders Lanzén et al. (2012). Bacterial diversity in relation to secondary production and succession on surfaces of the kelp Laminaria hyperborea. (ekstern lenke)
• Kjersti Sjøtun; Sarah Fagertun Eggereide; Tore Høisæter (2007). Grazer-controlled recruitment of the introduced Sargassum muticum (Phaeophyceae, Fucales) in northern Europe. (ekstern lenke)
• Caroline Susanne Armitage; Kjersti Sjøtun (2016). Epiphytic macroalgae mediate the impact of a non-native alga on associated fauna. (ekstern lenke)
• Vivian Husa; Inga Kjersti Sjøtun; Narve Brattenborg et al. (2008). Changes of macroalgal biodiversity in sublittoral sites in southwest Norway: impact of an introduced species or higher temperature?. (ekstern lenke)
• Mette Eilertsen; Kjell Magnus Norderhaug; Kjersti Sjøtun (2011). Does the amphipod fauna associated with epiphytes on kelp (Laminaria hyperborea) change with depth?. (ekstern lenke)
• Eli Rinde; Kjersti Sjøtun (2005). Demographic variation in the kelp Laminaria hyperborea along a latitudinal gradient. (ekstern lenke)
• Caroline Susanne Armitage; Kjersti Sjøtun; Knut Helge Jensen (2014). Correlative evidence for competition between fucus serratus and the introduced chlorophyte codium fragile subsp. fragile on the southwest coast of norway. (ekstern lenke)
• Frida Catharina Skovereng Knoop; Pedro Ribeiro; Geir Dahle et al. (2024). Genetic affiliations of miniaturized species and morphotypes within the Fucus genus (Phaeophyceae, Fucales). (ekstern lenke)
• Kjersti Sjøtun; Hilde Elise Heldal; Daniela Sabine Brakstad (2011). Differential concentration of Technetium-99 (99Tc) in common intertidal molluscs with different food habits. (ekstern lenke)
• William John Hatchett; James A. Coyer; Kjersti Sjøtun et al. (2022). A review of reproduction in the seaweed genus Fucus (Ochrophyta, Fucales): Background for renewed consideration as a model organism. (ekstern lenke)

Konferanseabstrakt

• Morten Skage; Nina Therese Mikkelsen; Inga Kjersti Sjøtun (2009). GENETIC SEPARATION OF DIFFERENT ENTITIES OF MASTOCARPUS STELLATUS (STACKHOUSE) GUIRY. (ekstern lenke)

Lederartikkel

• Torleiv Brattegard; Tore Høisæter; Kjersti Sjøtun et al. (2011). Norwegian fjords: from natural history to ecosystem ecology and beyond. (ekstern lenke)
• Øystein Skaala; Kjersti Sjøtun; Einar Dahl et al. (2014). Interactions between salmon farming and the ecosystem: Lessons from the Hardangerfjord, western Norway. (ekstern lenke)
• Tore Høisæter; Torleiv Brattegard; Kjersti Sjøtun (2011). Norwegian fjords: From natural history to ecosystem ecology and beyaond. (ekstern lenke)

Vitenskapelig bokkapittel

• Jon Thomassen Hestetun; Kjersti Sjøtun; Dag Lorents Aksnes et al. (2018). The marine Environment. (ekstern lenke)
• Jennifer Ann Devine; Keno Ferter; Henrik Glenner et al. (2018). Planning marine field studies. (ekstern lenke)
• Jan Rueness; Marit Ruge Bjærke; Stein Fredriksen et al. (2006). Alger - Cynanophyta, Rhodophyta, Phaeophyceae, Ulvophyceae, Charophyceae. (ekstern lenke)
• Anne Gro Vea Salvanes; Henrik Glenner; Dag Lorents Aksnes et al. (2018). Sampling gears and equipment. (ekstern lenke)
• Anne Gro Vea Salvanes; Henrik Glenner; Jennifer Ann Devine et al. (2018). Sorting specimens and preserving materials. (ekstern lenke)
• Knut Helge Jensen; Jennifer Ann Devine; Henrik Glenner et al. (2018). Data analysis. (ekstern lenke)

Forelesning

• Aleksander Handå; Ole Jacob Broch; Silje Forbord et al. (2018). Taredyrking – en næring i vekst. (ekstern lenke)
• Aleksander Handå; Ole Jacob Broch; Silje Forbord et al. (2019). MACROSEA - A knowledge Platform for Industrial Macroalgae Cultivation. (ekstern lenke)

Konferanseforedrag

• Bernt Rydland Olsen; Kjersti Sjøtun; Tore Høisæter et al. (2004). Population structure of Laminaria digitata (Hudson) J.V. Lamouroux from three different areas in the Northeast Atlantic Ocean. (ekstern lenke)
• Kjersti Sjøtun; Franz Ronald Goecke Saavedra; Solveig Thorkildsen et al. (2024). DNA barcoding the brown algal diversity within the order Ectocarpales in Norway. (ekstern lenke)
• Franz Ronald Goecke Saavedra; Juliet Brodie; Olivier De Clerck et al. (2024). Too small for macro, too big for micro - Unveiling the rich hidden diversity of tiny filamentous marine green algae (Chlorophyta) in Norway.. (ekstern lenke)
• Franz Ronald Saavedra Goecke; Juliet Brodie; Olivier De Clerck et al. (2025). Integrative taxonomy and phylogeny of microfilamentous marine green algae (Chlorophyta) in Norway.. (ekstern lenke)

Masteroppgave

• Vera Rønningen; Kjersti Sjøtun (2006). The survival and viability of Saccharina latissima ((L.) Lane, Mayes, Druehl et Saunders) spores and microscopic sporophytes in temperatures of 18-22°C. (ekstern lenke)
• Angelfoss Helle; Kjersti Sjøtun (2005). Opptak og lagring av ammonium hos Fucus serratus (L.) og Cladophora rupestris (L.) Kütz. (ekstern lenke)
• Mette Eilertsen; Inga Kjersti Sjøtun; Kjell Magnus Norderhaug (2007). Does the composition of amphipods associated to epiphytes on kelp (Laminaria hyperborea) change with depth?. (ekstern lenke)

Antologi

• Anne Gro Vea Salvanes; Jennifer Ann Devine; Knut Helge Jensen et al. (2018). Marine Ecological Field Methods - A guide for marine biologists and fisheries scientists. (ekstern lenke)

Doktorgradsavhandling

• Caroline Susanne Armitage; Kjersti Sjøtun (2017). Codium fragile subsp. fragile and Sargassum muticum: Non-native seaweeds in a changing environment. (ekstern lenke)
• Inga Kjersti Sjøtun (1995). Adaptive aspects of growth and reproduction in two North Atlantic Laminaria species. -Dr. scient. Thesis. (ekstern lenke)

Kapittel i fagbok

• Stein Fredriksen; Frithjof Emil Moy; Vivian Husa et al. (2015). Alger Cyanophyta, Rhodophyta, Chlorophyta, Ochrophyta. (ekstern lenke)
• Kjersti Sjøtun; Stein Fredriksen; Erling Heggøy et al. (2010). Alger: Cyanophyta, rhodophyta, chlorophyta, ochrophyta. (ekstern lenke)

Se en full oversikt over publikasjoner i Cristin

Knoop FCS, Ribeiro PA, Dahle G, Martín Martín R, Gómez Garreta A, Rull Lluch J, Sjøtun K (2025). Genetic affiliations of miniaturized morphotypes within the F. vesiculosus-F. spiralis clade (Phaeophyceae, Fucales). European Journal of Phycology 60:1, 11-23, DOI: 10.1080/09670262.2024.2415006

Ruiz Martínez E, McKeown D, Schroeder DC, Thuestad G, Sjøtun K, Sandaa R-A, Larsen A, Hoell IA (2023). Phaeoviruses present in cultured and natural kelp species, Saccharina latissima and Laminaria hyperborea (Phaeophyceae, Laminariales), in Norway. Viruses 15, 2331. https://doi.org/10.3390/v15122331 

van der Loos, LM et al. (2023). Non-indigenous seaweeds in the Northeast Atlantic Ocean, The Mediterranean Sea, and Macaronesia: a critical synthesis of diversity, spatial and temporal patterns. European Journal of Phycology

Vranken S. et al. (2023). AlgaeTraits: a trait database for (European) seaweeds. Earth System Science Data https://doi.org/10.5194/essd-15-2711-2023

Hatchett WJ, Coyer JA, Sjøtun K, Jueterbock A, Galice Hoarau G. (2022). A Review of Reproduction in the Seaweed Genus Fucus (Ochrophyta, Fucales): Background for Renewed Consideration as a Model Organism. Frontiers of Marine Science doi: 10.3389/fmars.2022.1051838

Ribeiro PA, Næss T, Dahle G, Asplin L, Meland K, Fredriksen S, Sjøtun K (2022). Going with the flow - population genetics of the kelp Saccharina latissima (Phaeophyceae, Laminariales). Frontiers in Marine Science DOI 10.3389/fmars.2022.876420

Sjøtun K, Armitage CS, Eilertsen M, Todt C (2021). Fauna associated with non-native Sargassum muticum (Fucales, Phaeophyceae) vary with thallus morphology and site type (sounds and bays). Marine Biological Research DOI 10.1080/17451000.2021.1994999

Thomson et al. (2021). Charting a course for genetic diversity in the UN Decade of Ocean Science. Evolutionary Applications httP://doi.org/10.1111/eva.13224

Sandvik et al. (2020). Alien species in Norway: results from quantitative ecological impact assessments. Ecological Solutions and Evidence 1 10.1002/2688-8319.12006

Sandvik H et al. (2019). Alien plants, fungi and algae in Norway: an inverntory of neobiota. Biological Invasions 21: 2997-3012

Bringloe TT, Sjøtun K, Saunders GW (2019). A DNA barcode survey of marine macroalgae from Bergen (Norway). Marine Biology Researchhttps://doi.org/10.1080/17451000.2019.1699659

Bjordal MV, Jensen KH, Sjøtun K (2019). A field study of the edible red alga Vertebrata lanosa (Rhodophyta). Journal of Applied Phycology in press.

Enerstvedt KH, Lundberg A, Sjøtun IK, Fadnes P, Jordheim M (2017). Characterization and seasonal variation of Individual flavonoids in Zostera marina and Zostera noltii from Norwegian coastal waters. Biochemical Systematics and Ecology 74: 42-50

Armitage CS, Sjøtun K (2017). Can an old alien benefit from rising ocean temperatures? An experimental and field study on the growth and local distribution of Codium fragile subsp. fragile (Chlorophyta). Marine Biology DOI 10.1007/s00227-017-3170-5

Armitage CS, Husa V,Petelenz-Kurdziel EA, Sjøtun K (2017). Growth and competition in a warmer ocean: A field experiment with a non-native and two native habitat building seaweeds. Marine ecology Progress Series 573: 85–99

Sjøtun K, Heesch S, Rull Lluch J, Martín Martín R, Gómez Garreta A, Brysting AK, Coyer JA (2017). Unraveling the complexity of salt marsh "Fucus cottonii" forms (Phaeophyceae, Fucales). European Journal of Phycology   doi.org/10.1080/09670262.2017.1309688

Armitage CS, Sjøtun K (2016). Codium fragile in Norway: Subspecies identity and morphology. Botanica Marina 56: 439–450

Sjøtun K, Heggøy E, Gabrielsen TM, Rueness J (2016). Dasya adela sp. nov. (Rhodophyta, Ceramiales), an enigmatic new Dasya from a landlocked fjord in southwest Norway. Phycological Research 64: 79-94

Armitage CS, Sjøtun K (2016). Epiphytic macroalgae mediate the impact of a non-native alga on associated fauna. Hydrobiologia DOI 10.1007/s10750-016-2707-9

Sjøtun K, Husa V, Asplin L, Sandvik AD (2015). Climatic and environmental factors influencing occurrence and distribution of macroalgae – a fjord gradient revisited. Marine Ecology – Progress Series 532: 73-88 

Armitage C, Sjøtun K, Jensen KH (2014). Correlative evidence for competition betweenFucus serratus and the introduced chlorophyte Codium fragile subsp. fragile on the southwest coast of Norway. Botanica Marina 57: 85-97

Husa V, Steen H, Sjøtun K (2014). Historical changes in macroalgal communities in Hardangerfjord (Norway). Marine Biology Research 10: 226-240

Husa V, Kutti T, Ervik A, Sjøtun K, Kupka Hansen P, Aure J (2014). Regional impact from fin-fish farming in an intensive production area (Hardangerfjord, Norway). Marine Biology Research 10: 241-252

Bengtsson MM, Sjøtun K, Lanzén A & Øvreås L (2012). Bacterial diversity in relation to secondary production and succession on surfaces of the kelp Laminaria hyperborea. The ISME Journal 6: 2188-2198

Sjøtun K, Heldal HE, Brakstad, DS (2011). Differential concentration of Technetium-99 (99Tc) in common intertidal molluscs with different food habits. Marine Pollution Bulletin 62:2420-2426

Brattegard T, Høisæter T, Sjøtun K, Fenchel T & Uiblein F (2011). Norwegian Fjords: from Natural History to Ecosystem Ecology and beyond. Marine Biology Research 7: 421-424 (editorial note).

Eilertsen M, Norderhaug KM & Sjøtun K (2011). Does the amphipod fauna associated to epiphytes on kelp (Laminaria hyperborea) change with depth? Marine Biology Research 7: 224-234

Bengtsson MM, Sjøtun K, Storesund JE& Øvreås L (2011). Utilization of kelp-derived carbon sources by kelp surface-associated bacteria. Aquatic Microbial Ecology 62: 191-199

Heldal HE & Sjøtun K (2010). Technetium-99 (99Tc) in annual growth segments of knotted wrack (Ascophyllum nodosum). Science of the Total Environment 408: 5575-5582

Lorentsen S-H, Sjøtun K & Grémillet D (2010). Multi-trophic consequences of kelp harvest. Biological Conservation 143: 2054-2062

Bengtsson M, Sjøtun K & Øvreås L (2010). Seasonal dynamics of bacterial biofilms on kelp (Laminaria hyperborea). Aquatic Microbial Ecology 60: 71-83

Coyer J, Hoarau G, Sjøtun K & Olsen JL (2008). Being abundant is not enough: a decrease in effective population size over eight generations in a Norwegian population of the seaweed, Fucus serratus. Biology Letters 4: 755-757

Sjøtun K, Husa V & Peña V (2008). Present distribution and possible vectors of introductions of the alga Heterosiphonia japonica (Ceramiales, Rhodophyta) in Europe. Aquatic Invasions 3: 377-394

Husa V, Sjøtun K, Brattenborg N & Lein TE (2008). Changes of macroalgal biodiversity in sublittoral sites in southwest Norway: impact of an introduced species or higher temperature? Marine Biology Research 4: 414-428

Rueness J, Heggøy E, Husa V & Sjøtun K (2007). First report of the Japanese red alga Antithamnion nipponicum (Ceramiales, Rhodophyta) in Norway, an invasive species new to northern Europe. Aquatic invasions 2: 431-434 (Short communication).

Sjøtun K, Eggereide SF & Høisæter T (2007). Grazer-controlled recruitment of the introduced Sargassum muticum (Phaeophyceae, Fucales) in northern Europe. Marine Ecology Progress Series 342: 127-138. 

Husa V & Sjøtun K (2006). Vegetative reproduction in "Heterosiphonia japonica" (Dasyaceae, Ceramiales), an introduced red alga on European coasts. Botanica Marina 49: 191-199

Sjøtun K, Christie H & Fosså JH (2006). The combined effect of canopy shading and sea urchin grazing on recruitment in kelp forest (Laminaria hyperborea). Marine Biology Research 2: 24-32. 

Rinde E & Sjøtun K (2005). Demographic variation in the kelp Laminaria hyperborea along a latitudinal gradient. Marine Biology 146: 1051-1062

Husa V, Sjøtun K & Lein TE (2004). The newly introduced species Heterosiphonia japonica Yendo (Dasyaceae, Rhodophyta): geographical distribution and abundance at the Norwegian southwest coast. Sarsia 89: 211-217

Sjøtun K & Schoschina EV (2002). Gametophytic development of Laminaria spp. (Laminariales, Phaeopyceae) at low temperature. Phycologia 41: 147-152

Mapping and DNA barcoding of Brown algal diversity, Norwegian Biodiversity Information Centre, project leader 2021-2024

ViralIce (Western Norway University), WP2 leader, 2021-2024

MACROSEA (SINTEF), WP3 leader 2016-2018

INVASIVES, Seas-era prosjekt coordinator 2013-2016: http://invasives.b.uib.no/

Running: The web-page Norwegian Seaweeds (http://seaweeds.uib.no)