Jorunn Larsen

• Lien, Anne; Palmer, Helen; Larsen, Jorunn; Svendsen, Monica Lian; Bomark, Nils-Erik & Krakstad, Beate Fast [Show all 7 contributors for this article] (2026). Building a Scientific Skill Set: A Design-Based Research Approach to Developing a Tool for Science Education and Beyond | Journal of the International Society for Teacher Education. Journal of the International Society for Teacher Education. ISSN 1029-5968. 30(1), p. 5–22. doi: 10.26522/jiste.v30i1.5268. Full text in Research Archive Show summary

  Life skills like problem-solving, communication, collaboration, and creative and critical thinking are closely tied to scientific practices in science education. However, there is ongoing debate about how to define and operationalize scientific practices for implementation in schools and teacher education. In Norway, these practices are a core element of the science curriculum, but their definition remains vague. To address this, we used a design-based research approach to develop a skills-based tool for teaching and learning scientific practices in schools and teacher education. The tool highlights twelve interrelated skills that support students’ engagement in scientific practices and their reflection on scientific processes. We describe the process of designing and developing the teaching tool, our design analysis of why and how the tool evolved, and three design principles to inform the development of a skills-based teaching tool to practice science. These principles highlight three critical features of the tool: it is dynamic and flexible, initiates active learning, and provides support for teachers.

• Eide, Ingvar; Berg, Toril; Thorvaldsen, Bodil; Christensen, Guttorm N.; Savinov, Vladimir & Larsen, Jorunn (2011). Polycyclic Aromatic Hydrocarbons in Dated Freshwater and Marine Sediments Along the Norwegian Coast. Water, Air and Soil Pollution. ISSN 0049-6979. 218(1-4), p. 387–398. doi: 10.1007/s11270-010-0653-0. Full text in Research Archive
• Velle, Gaute; Bjune, Anne Elisabeth; Larsen, Jorunn & Birks, Harry John Betteley (2010). Holocene climate and environmental history of Brurskardstjørni, a lake in the catchment of Øvre Heimdalsvatn, south-central Norway. Hydrobiologia. ISSN 0018-8158. 642(1), p. 13–34. doi: 10.1007/s10750-010-0153-7. Full text in Research Archive
• Paasche, Øyvind & Larsen, Jorunn (2010). Changes in lake stratification and oxygen distribution inferred from two contrasting records of magnetotactic bacteria and diatoms. Journal of Geophysical Research (JGR): Biogeosciences. ISSN 2169-8953. 115. doi: 10.1029/2009JG001081. Full text in Research Archive Show summary

  Magnetotactic bacteria (MTB) and diatoms produce hard parts on seasonal timescales that continuously becomes embedded in various soft sediment archives. Consequently, they can, and are, frequently used to reconstruct past environmental conditions in oceans, fjords, and freshwater basins. In this study, we observe how these two cosmopolitan creatures can be used to track vertical shifts in the distribution of oxygen in a small mountain lake situated in western Norway. Several short and long sediment cores have been retrieved from the lake, allowing for a detailed reconstruction that spans the last 2500 years. During periods of enhanced runoff from the catchment the Oxic-Anoxic Transition Zone (OATZ) is lowered down to the lake-sediment interface, due to increased convection. We posit that this condition reduces the concentration of microaerophilic magnetite-producing MTB, an interpretation partly supported by rock magnetic analyzes. Preservation of diatom frustules is, however, improved whenever this oxygen-rich scenario prevails. Similarly, when runoff is low, and the OATZ is lifted above the lake-sediment interface, MTB concentration seems to increase, whereas dissolution of diatoms is more common. This consistent antiphase relationship between MTB concentration and diatom preservation, occurring on a multidecadal timescale during lowest reconstructed lake-water pH in the lake's history, suggest a coupled response to subtle changes in external environmental variables that affect catchment and lake hydrology.

• Jarbu, Aina Dahlø; Larsen, Jorunn & Talbot, Michael (2009). Jarbu A.D., LarsenCombining carbonate δ13C and δ18O and diatom data to interpret the Holocene palaeoenvironment of Lake Ulltvedttjern, southern Norway. In Jarbu A.D (2009). Stable isotopic studies of carbonates and organic matter from selected Norwegian lakes. Stable isotopic studies of carbonates and organic matter from selected Norwegian lakes : implications for palaeoenvironmental reconstructions. Universitetet i Bergen. ISSN 9788230809105. Full text in Research Archive Show summary

  PhD-avhandling

• Larsen, Jorunn; Bjune, Anne Elisabeth & Riva, Arguitxu Caballero De La (2006). Holocene environmental and climate history of Trettetjørn, a low-alpine lake in western Norway, based on subfossil pollen, diatoms, oribatid mites, and plant macrofossils. Arctic, Antarctic and Alpine research. ISSN 1523-0430. 38(4), p. 571–583. Full text in Research Archive
• Paus, Aage; Velle, Gaute; Larsen, Jorunn; Nesje, Atle & Lie, Øyvind (2006). Lateglacial nunataks in central Scandinavia: Biostratigraphical evidence for ice thickness from Lake Flafattjonn, Tynset, Norway. Quaternary Science Reviews. ISSN 0277-3791. 25(11-12), p. 1228–1246. Full text in Research Archive
• Larsen, Jorunn; Jones, V.J. & Eide, Wenche (2006). Climatically driven pH changes in two Norwegian alpine lakes. Journal of Paleolimnology. ISSN 0921-2728. 36(2), p. 175–187. doi: 10.1007/s10933-006-0013-7. Full text in Research Archive
• Larsen, Jorunn; Paasche, Øyvind; Andersen, Dag Olav; Bjune, Anne Elisabeth & Caballero, Argutitxu De la Riva (2006). Sedimentary diatom assemblages in a small alpine west Norwegian lake: evidence for metal release and precipitation? In Withowski, Andrzej (Eds.), Proceedings of the 18th International Diatom Symposium - Miedzyzdroje, Poland, 2nd-7th September, 2004. Andrzej Withowski. ISSN 9780948737756. p. 221–234. Full text in Research Archive
• Velle, Gaute; Larsen, Jorunn; Eide, Wenche; Peglar, Sylvia Margaret & Birks, Harry John Betteley (2005). Holocene environmental history and climate of Råtåsjøen, a low-alpine lake in south-central Norway. Journal of Paleolimnology. ISSN 0921-2728. 33, p. 129–153. Full text in Research Archive Show summary

  The Holocene environmental history and climate are reconstructed for Råtåsjøen, a low-alpine lake in south-central Norway. The reconstructions are based on chironomids, diatoms, pollen, plant macrofossils, and sediment characteristics. From plant macrofossil evidence, birch trees (Betula pubescens) immigrated ca. 10,000 cal BP. The chironomid-inferred mean July air temperature was high, but may be unreliable during the early stages of the lakes history due to the high abundance of Chironomus anthracinus type, a taxon that may include several species. From ca. 9000 cal BP the inferred mean July temperature was lower (ca. 9 °C). Temperatures increased towards 8000 cal BP and pine (Pinus sylvestris) reached its upper limit near the lake. July temperature may have become a significant factor controlling long-term pH in the lake, starting shortly after 8000 cal BP. High pH values were associated with periods of warm summers and lower pH values occurred during periods of colder summers. Alkalinity processes within the lake and/or the catchment are possible factors controlling this relationship. A temperature decline at ca. 5400 cal BP separated two 10.6 °C temperature maxima around 6400 and 4500 cal BP. The 1.5 °C decline in July air temperatures from ca. 4400 cal BP was paralleled by a decrease of pH from 7.2 to 6.8. Following the temperature drop, first pine and then birch trees declined and disappeared from the catchment and organic accumulation in the lake increased. The increased organic accumulation rate had a positive effect on diatom production. At ca. 2700 cal BP the temperature reached a minimum (ca. 9.2 °C) and correspondingly a second pH minimum was reached. Temperature decreased again slightly at ca. 400 cal BP during the Little Ice Age, before increasing by about 0.5 °C towards the present. Percentage organic carbon as estimated by loss-on-ignition appears to be better correlated with chironomid-inferred July temperatures than organic accumulation rates, at least for the last 9000 years. Accumulation rates of organic sediments are more coupled with catchment-related processes, such as erosion and major changes in vegetation, than is percentage organic carbon.

• Larsen, Jorunn (2003). Size distributions and concentrations of spheroidal carbonaceous fly-ash particles (SCPs) in lake sediments as an aid to detecting locally deposited atmospheric pollution. Water, Air and Soil Pollution. ISSN 0049-6979. 149, p. 163–175. Full text in Research Archive
• Larsen, Jorunn (2000). Recent changes in diatom-inferred pH, heavy metals, and spheroidal carbonaceous particles in lake sediments near an oil refinery at Mongstad, western Norway. Journal of Paleolimnology. ISSN 0921-2728. 23(4), p. 343–363. Full text in Research Archive Show summary

  Sediments from two naturally acid lakes have been used to inevstigate whether there is any local impact of atmospheric pollution from an oil refinery at Mongstad in western Norway. the refinery started started production in 1975 and expanded in 1987. One lake was selected as a reference site as it only receives long-transported air pollution, whereas a second lake was selected as it was expected to receive both long-range transported and local air pollution from the refinery. Heavy metal (Pb, Ni, and Zn) and spheroidal carbonaceous particles (SCP) concentrations and accumulation rates have been estimated and lake-water pH has been reconstructed by weighted averaging partial least squares regression and calibration from the fossil diatom assemblages. Heavy metals that are in the size range for which atmospheric residence time is greatest do not show any enhanced levels in the sediments after 1975 that could be associated with local impacts from the refinery. SCPs in the sediments that are in the size range thought to be effectively removed by dry deposition, and thus have a more local deposition pattern, show an increase after 1975 and an additional large increase after 1987 that can be explained by impacts from the local oil refinery. After 1975 the SCP diameter distribution changed from being dominated by SCPs with a small diameter to SCPs with larger diameters.The sulphur dioxid emission from the oil refinery seems to have had no significant effect on lake pH. The reconstructed lake pH history is complex, possibly related to land-use changes and long-range transported air pollution.

• Larsen, Jorunn; Birks, Harry John Betteley; Raddum, Gunnar & Fjellheim, Arne (1996). Quantitative relationships of invertebrates to pH in Norwegian river systems. Hydrobiologia. ISSN 0018-8158. 328(1), p. 57–74. Full text in Research Archive
• Larsen, Jorunn; Boyle, John F. & Birks, Harry John Betteley (1996). Variation in the geochemistry of recent lake sediments along a west-east pollution gradient in the Bergen area, Norway. Water, Air and Soil Pollution. ISSN 0049-6979. 0088(1-2), p. 47–81. Full text in Research Archive

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• Damsgaard, Camilla; Hald-Mortensen, Marianne; Guttormsen, Vigdis; Dversnes, Hanne Andersen; Lien, Anne & Larsen, Jorunn (2025). Nordisk Smag - en fælles bæredygtig madkultur - UC Viden - Professionshøjskolernes Videndatabase. Professionshøjskolen UCN og læreruddannelser på hhv. Åbo Akademi, Vasa övningsskola i Finland og Universitetet i Agder (UiA) i Norge.. ISBN 9788785451026. doi: https:/www.ucviden.dk/da/projects/nordisk-smag-en-f%C3%A6lles-b%C3%A6redygtig-madkultur/. Full text in Research Archive Show summary

  I prosjektet "Nordisk Smag" har lærere, studenter og forskere fra Danmark, Norge og Finland utviklet tverrfaglig undervisningsmateriell i mat og helse og naturfag for 5.- 7. trinn. Materialene gir elevene innblikk i nordisk natur, matkultur og nordisk språk. Det er finnes tre undervisningsopplegg, og alle inkluderer både elevbøker og lærerveiledninger + introduksjonstekster:

• Lien, Anne; Larsen, Jorunn; Guttormsen, Vigdis; Dversnes, Hanne Andersen; Hald, Marianne & Damsgaard, Camilla [Show all 9 contributors for this article] (2024). Nordisk smag-Fortidens mad. (Elevbok). Professionshøjskolen UCN og læreruddannelser på hhv. Åbo Akademi, Vaasa Övningsskola i Finland og Universitetet i Agder (UiA) i Norge.. ISBN 9788797431160. 139 p. Full text in Research Archive
• Guttormsen, Vigdis; Dversnes, Hanne Andersen; Lien, Anne; Larsen, Jorunn; Damsgaard, Camilla & Hald, Marianne [Show all 9 contributors for this article] (2024). Nordisk smag-Fortidens mad.(Lærerveiledning). Professionshøjskolen UCN og læreruddannelser på hhv. Åbo Akademi, Vaasa Övningsskola i Finland og Universitetet i Agder (UiA) i Norge.. ISBN 9788797431153. 52 p. Full text in Research Archive

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• Guttormsen, Vigdis; Dversnes, Hanne Andersen; Lien, Anne; Larsen, Jorunn; Ceeberg, Elise Jeppesen & Ersland, Henriette Hersvik [Show all 7 contributors for this article] (2024). LÆRERVEJEDNING 2A - POTET, Nordisk smag-Fortidens mad.(Lærerveiledning). Professionshøjskolen UCN og læreruddannelser på hhv. Åbo Akademi, Vaasa Övningsskola i Finland og Universitetet i Agder (UiA) i Norge.. ISSN 9788797431153. p. 26–32. Full text in Research Archive
• Dversnes, Hanne Andersen; Guttormsen, Vigdis; Lien, Anne; Larsen, Jorunn; Brekke, Henrik Haaland & Line, Oda [Show all 7 contributors for this article] (2024). 1A - SPISELIGE PLANTER I NATUREN, Nordisk smag-Fortidens mad. (Elevbok). Professionshøjskolen UCN og læreruddannelser på hhv. Åbo Akademi, Vaasa Övningsskola i Finland og Universitetet i Agder (UiA) i Norge.. ISSN 9788797431160. p. 17–32. Full text in Research Archive
• Dversnes, Hanne Andersen; Guttormsen, Vigdis; Lien, Anne; Larsen, Jorunn; Andersen, Thea-Celine Krantz & Ceeberg, Elise Jeppesen [Show all 7 contributors for this article] (2024). 2A - POTET, Nordisk smag-Fortidens mad. (Elevbok). Professionshøjskolen UCN og læreruddannelser på hhv. Åbo Akademi, Vaasa Övningsskola i Finland og Universitetet i Agder (UiA) i Norge.. ISSN 9788797431160. p. 73–88. Full text in Research Archive
• Guttormsen, Vigdis; Dversnes, Hanne Andersen; Lien, Anne; Larsen, Jorunn; Damsgaard, Camilla & Hald, Marianne [Show all 9 contributors for this article] (2024). HVAD KENDER DU TIL FORTIDENS MAD/ FORTIDENS MAD I NORDEN, Nordisk smag-Fortidens mad. (Elevbok). Professionshøjskolen UCN og læreruddannelser på hhv. Åbo Akademi, Vaasa Övningsskola i Finland og Universitetet i Agder (UiA) i Norge.. ISSN 9788797431160. p. 7–12. Full text in Research Archive
• Guttormsen, Vigdis; Dversnes, Hanne Andersen; Lien, Anne; Larsen, Jorunn; Damsgaard, Camilla & Hald, Marianne [Show all 9 contributors for this article] (2024). LÆRERVEJLEDNING - FORTIDENS MAD, Nordisk smag-Fortidens mad.(Lærerveiledning). Professionshøjskolen UCN og læreruddannelser på hhv. Åbo Akademi, Vaasa Övningsskola i Finland og Universitetet i Agder (UiA) i Norge.. ISSN 9788797431153. p. 4–6. Full text in Research Archive
• Dversnes, Hanne Andersen; Guttormsen, Vigdis; Lien, Anne; Larsen, Jorunn; Brekke, Henrik Haaland & Line, Oda [Show all 7 contributors for this article] (2024). LÆRERVEILEDNING 1A - SPISELIGE PLANTER I NATUREN, Nordisk smag-Fortidens mad.(Lærerveiledning). Professionshøjskolen UCN og læreruddannelser på hhv. Åbo Akademi, Vaasa Övningsskola i Finland og Universitetet i Agder (UiA) i Norge.. ISSN 9788797431153. p. 7–15. Full text in Research Archive
• Lien, Anne; Larsen, Jorunn; Nygård, Malene Østreng; Gabrielsen, Tove M.; Korslund, Lars & Marcussen, Johanna Bjånes [Show all 10 contributors for this article] (2024). Gimle: En gressplen erstatter ikke skog. p. 15–15. Full text in Research Archive
• Lien, Anne; Nygård, Malene Østreng; Laugen, Ane Timenes; Lie, Asbjørn; Slettan, Audun & Johansen, Beate Strøm [Show all 33 contributors for this article] (2023). Utbygging vil ødelegge for biologisk mangfold på campus Gimlemoen. NB! 34 forfattere totalt. p. 19–19. Full text in Research Archive
• Larsen, Jorunn; Nygaard, Malene; Halvorsen, Kirsti Vindal; Borg-Stoveland, Stian; Sørdalen, Tonje Knutsen & Fiskvatn, Kari [Show all 7 contributors for this article] (2023). Når natur forsvinner: Bærekraftig utvikling eller bare kraftig utvikling i Kristiansand kommune? Full text in Research Archive
• Larsen, Jorunn (2023). Vil at sjelden skog skal stanse byggingen av 270 boliger. [Journal]. Byggeindustrien bygg.no. Full text in Research Archive
• Larsen, Jorunn & Fiskvatn, Kari (2023). Her skal det bygges boliger og kontorbygg. Det bekymrer Kari og Jorunn. [Journal]. Fædrelandsvennen. Full text in Research Archive
• Larsen, Jorunn; Korslund, Lars & Fiskvatn, Kari (2023). Fortellingen om enda en skog som forsvinner. Full text in Research Archive
• Svingen-Austestad, Anna; Falck, Åsa Lipka; Enberg, Cecilia; Lien, Anne; Larsen, Jorunn & Fiskvatn, Kari (2019). MOBILE DIORAMA TOUR 2019. Full text in Research Archive
• Svingen-Austestad, Anna; Lien, Anne; Larsen, Jorunn; Fiskvatn, Kari; Falck, Åsa Lipka & Enberg, Cecilia [Show all 7 contributors for this article] (2019). LAB (skala 1:1) – Hva er observasjon? Full text in Research Archive
• Larsen, Jorunn & Hjelle, Kari Loe (2013). Moderne gårdsdrift betyr gjødsling av åker og eng, dyrking av monokulturer, ugrasbekjemping og maskinell høsting. Hjelle K. og Larsen L. i Nord, S., Solhøy, T. & Helland-Hansen, W. Ei halvøy i Hardanger. Natur- og kulturforteljingar frå Neshalvøya. Nord 4, Kvinnherad 2013. In Nord, Svein (Eds.), Ei halvøy i Hardanger, Natur- og kulturforteljingar frå Neshalvøya. Nord 4. ISSN 9788273261045. Full text in Research Archive
• Larsen, Jorunn (2008). Elever blant krystaller av mineraler. Årbok (Agder naturmuseum og botaniske hage). ISSN 0333-3124. Full text in Research Archive
• Larsen, Jorunn (2008). Diatoméer - naturens fremste teknologer og miljøindikatorer. Naturen. ISSN 0028-0887. Full text in Research Archive
• Larsen, Jorunn (2007). Før snakket vi om været – nå gjør vi noe med det. Fædrelandsvennen. ISSN 0805-3790. Full text in Research Archive
• Larsen, Jorunn (2007). Før snakket vi om været – nå gjør vi noe med det. Fædrelandsvennen. ISSN 0805-3790. Full text in Research Archive
• Larsen, Jorunn & Fiskvatn, Kari (2006). Naturforsker – prosjektet. Årbok (Agder naturmuseum og botaniske hage). ISSN 0333-3124. Full text in Research Archive
• Larsen, Jorunn; Paasche, Øyvind; Andersen, Dag Olav; Bjune, Anne E. & Caballero, Arguitxu (2004). Sedimentary diatom assemblages in a small alpine west Norwegian lake: evidence for metal release and precipitation. Full text in Research Archive
• Bjune, Anne Elisabeth & Larsen, Jorunn (2003). Arkivet i innsjøen. AKA. ISSN 1503-3368. 9, p. 13–14. Full text in Research Archive
• Larsen, Jorunn (2003). Detecting local-deposited atmospheric pollution using size and concentrations of spheroidal carbonaceous fly-ash particles (SCPs). Full text in Research Archive
• Larsen, Jorunn (2003). Diatom responses to climate or other environmental changes during the last centuries in the alpine region of southern Norway. Full text in Research Archive
• Larsen, Jorunn (2003). The contribution of freshwater diatom studies to climate research in some Norwegian alpine lakes. Full text in Research Archive
• Holmstad, Per Ragnvald; Østenstad, Petter; Larsen, Jorunn & Fjellanger, Inger Johanne (2002). Videre studier ved Universitetet i Bergen ? Full text in Research Archive
• Larsen, Jorunn (2002). Diatom changes through Holocene in alpine lakes in Southern Norway. Full text in Research Archive
• Larsen, Jorunn (2002). Holocene productivity changes in a present oligotrophic alpine lake. Full text in Research Archive
• Larsen, Jorunn (2002). Innsjøer - arkiv for forsurings-og forurensningshistorie. Full text in Research Archive
• Larsen, Jorunn (2000). Innsjøbunnen avslører tidligere pH. pH-status : forum for sur nedbør og kalking. ISSN 0808-4882. 6(2), p. 6–6. Full text in Research Archive Show summary

  Å beregne gjennomsnitlig pH fra en innsjø er tid og kostnadskrevende. I de fleste innsjøer er det umulig å finne den naturlige pH vannet hadde før den industrielle revolusjon fordi pH målinger ikke eksisterer. Rekonstruksjon av gjennomsnitlig pH kan gjøres ved å ta en sedimentkjerne fra innsjøbunnen, og ved hjelp av enkle prepareringsteknikker analysere sedimentene for en gruppe mikroskopiske alger, kalt diatomeer.

• Lindstrøm, Eli-Anne; Brettum, Pål; Halvorsen, Godtfred Anker; Halvorsen, Gunnar; Johansen, Stein W. & Larsen, Jorunn [Show all 7 contributors for this article] (2005). Effekter av kalking på biologisk mangfold. Undersøkelser i Tovdalsvassdraget 1999-2001. Direktoratet for naturforvaltning. ISSN 9788270725977. Full text in Research Archive
• Larsen, Jorunn (2004). Prøvetaking av sediment fra Svartatjønn ved Mongstad og Kattatjønn på Sotra. Natur i Sør, Agder naturmuseums rapportserie. Full text in Research Archive
• Johansen, S.W.; Lindstrøm, Eli-Anne; Larsen, Jorunn & Romstad, R. (2003). Årsrapporter 2002 - biologiske forhold. Stakraft SF. ISSN 9788255406075. Full text in Research Archive
• Larsen, Jorunn (2000). The detection of environmental change in lakes and rivers of western Norway using biological and chemical data. Universitetet i Bergen. ISSN 9788274600034. Full text in Research Archive

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