I am marine ecologist with a keen interested in evolution and the ecology and biography of environmental change, with a fascination for polar ecosystems and the ocean twilight zone. My research currently revolves around the understanding of mechanism at the individual level underlying macroecological and macroevolutionary patterns. Central aspects of my work are life-history theory, physiology and the role of the light regime in governing foraging interactions and consequently species distributions. I enjoy thinking broadly, to link data with theory and models, and I find interest in diverse biological disciplines.

For further details and a list of publications, please visit our my profile on our group website or my google scholar page.

Lecture

• Langbehn, Tom (2024). Panel debate on Seafloor mining. (external link)
• Aarflot, Johanna Myrseth; Langbehn, Tom (2024). Light, darkness and the ocean ecosystem. (external link)
• Langbehn, Tom; Ljungström, Anna Jeja Gabriella (2024). Bærekraftig mat fra havet. (external link)
• Langbehn, Tom (2023). Visual Storytelling. (external link)
• Dingsør, Gjert Endre; Scherrer, Kim Josefin Niklasdotter; Ljungström, Anna Jeja Gabriella et al. (2023). Brexit doblet karbonfotavtrykket til Norges makrellfiskeflåte. (external link)
• Scherrer, Kim Josefin Niklasdotter; Enberg, Katja Susanna; Langbehn, Tom et al. (2023). Small fish - The world’s most CO2 efficient animal protein source?. (external link)
• Dunn, Muriel Barbara; McGowan-Yallop, Chelsey; Pedersen, Geir et al. (2023). Model-informed classification of broadband acoustic backscattering from zooplankton in an in situ mesocosm. (external link)
• Scherrer, Kim Josefin Niklasdotter; Langbehn, Tom; Jørgensen, Christian (2022). Mer mat med mindre påvirkning – kan pelagiske fiskerier bidra mer til bærekraftig matproduksjon?. (external link)
• Scherrer, Kim Josefin Niklasdotter; Enberg, Katja Susanna; Jørgensen, Christian et al. (2022). How can fisheries contribute more to a sustainable future?. (external link)
• Langbehn, Tom; Jørgensen, Christian; Ljungström, Anna Jeja Gabriella et al. (2019). Can a food systems approach redefine ecosystem-based fisheries management?. (external link)
• Langbehn, Tom (2017). Abundance and productivity of mesopelagic fish. (external link)
• Langbehn, Tom (2017). Hunger games: can seasonality in light constrain northward range shifts. (external link)

Academic lecture

• Langbehn, Tom; Bourgouin, Andeol; Enberg, Katja Susanna et al. (2024). How the the Greater Argentine concentrates the flow of food from the deep ocean.. (external link)
• Scherrer, Kim Josefin Niklasdotter; Langbehn, Tom; Ljungström, Anna Jeja Gabriella et al. (2024). Fish for feed or food?. (external link)
• Langbehn, Tom (2024). The ecological mechanics of light and life in the open ocean​. (external link)
• Majaneva, Markus; Viljanen, Martta; Grant, Stephen Denis et al. (2024). Illuminating zooplankton diel vertical migration with eDNA metabarcoding in the polar night. (external link)
• Majaneva, Markus; Viljanen, Martta; Grant, Stephen Denis et al. (2024). Illuminating zooplankton diel vertical migration with eDNA metabarcoding in the polar night. (external link)
• Enberg, Katja Susanna; Jørgensen, Christian; Ljungström, Anna Jeja Gabriella et al. (2023). How can fisheries contribute more to a sustainable future?. (external link)
• Ljungström, Anna Jeja Gabriella; Langbehn, Tom; Jørgensen, Christian (2023). Bergman patterns in a warming ocean, their mechanistic basis, and implications for projecting responses to climate change. (external link)
• Langbehn, Tom; Ljungström, Anna Jeja Gabriella; Fiksen, Øyvind et al. (2023). Insights from mechanistic models: understanding causes and consequences of mesopelagic diel vertical migration across latitudes. (external link)
• Scherrer, Kim Josefin Niklasdotter; Enberg, Katja Susanna; Dingsør, Gjert Endre et al. (2023). Trends in CO2 efficiency in North Atlantic fisheries. (external link)
• Langbehn, Tom; Ljungström, Anna Jeja Gabriella; Fiksen, Øyvind et al. (2023). Model evidence for photic barriers to poleward range shifts. (external link)
• Langbehn, Tom; Scherrer, Kim Josefin Niklasdotter; Ljungström, Anna Jeja Gabriella et al. (2023). Spatial restrictions inadvertently doubled the carbon footprint of Norway’s mackerel fishing fleet. (external link)
• Scherrer, Kim Josefin Niklasdotter; Ljungström, Anna Jeja Gabriella; Langbehn, Tom et al. (2023). Rethinking fisheries in the sustainability crisis - the role of small pelagics. (external link)
• Langbehn, Tom; Aarflot, Johanna Myrseth ; Varpe, Øystein et al. (2022). Visual predation risk and spatial distribution of large Arctic copepods along gradients sea ice and bottom depth . (external link)
• Langbehn, Tom (2022). The Arctic lightscape and its role in pelagic interactions and species distributions. (external link)
• Langbehn, Tom (2021). Combining models and observations. (external link)
• Langbehn, Tom Jasper (2021). From light, to vision, to species distribution - Developing a mechanistic understanding of species (re-)distributions beyond temperature. (external link)
• Langbehn, Tom Jasper; Aarflot, Johanna Myrseth; Varpe, Øystein Heggernes (2021). The pelagic riskscape and consequences for zooplankton size along gradients of light and sea-ice in the Barents Sea. (external link)
• Langbehn, Tom Jasper; Ljungström, Anna Jeja Gabriella; Jørgensen, Christian (2021). Light and energetics at seasonal extremes limit poleward range shifts. (external link)
• Langbehn, Tom Jasper; Ljungström, Anna Jeja Gabriella; Jørgensen, Christian (2021). Equatorwards shifts of marine fishes under climate change: a rule rather than exception?. (external link)
• Langbehn, Tom Jasper (2021). From light, to vision, to species distribution - Developing a mechanistic understanding of species (re-)distributions beyond temperature. (external link)
• Langbehn, Tom Jasper; Bourgouin, Andeol; Enberg, Katja et al. (2020). Exploring the emergent niche of Greater argentine (Argentina silus) along gradients of topography, light and advection. (external link)
• Langbehn, Tom; Jørgensen, Christian; Fiksen, Øyvind et al. (2019). From light, to vision, to species distribution. (external link)
• Langbehn, Tom; Varpe, Øystein (2019). Sea-ice loss boosts visual search: fish foraging and changing pelagic interactions in polar oceans. . (external link)
• Langbehn, Tom; Aksnes, Dag Lorents; Kaartvedt, Stein et al. (2019). Poleward distribution of mesopelagic fish is constrained by seasonality in light. (external link)
• Langbehn, Tom; Aksnes, Dag Lorents; Kaartvedt, Stein et al. (2019). Poleward distribution of mesopelagic fish is constrained by seasonality in light. (external link)
• Langbehn, Tom; Aksnes, Dag Lorents; Kaartvedt, Stein et al. (2019). Light and the ecology of mesopelagic fish at high latitudes. (external link)
• Langbehn, Tom; Fiksen, Øyvind; Jørgensen, Christian (2018). The deadly midnight sun: Visual predators and northern range limits in mesopelagic fish. (external link)
• Langbehn, Tom; Varpe, Øystein (2018). Sea-ice loss boosts visual search: fish foraging and changing pelagic interactions in polar oceans. (external link)
• Langbehn, Tom; Varpe, Øystein (2015). Photoperiodic implications on range expansion in polar marine ecosystems. (external link)

Academic article

• Scherrer, Kim J.N.; Langbehn, Tom; Ljungström, Anna Jeja Gabriella et al. (2024). Spatial restrictions inadvertently doubled the carbon footprint of Norway's mackerel fishing fleet. (external link)
• Quintela, Maria; Seljestad, Gaute Wilhelmsen; Dahle, Geir et al. (2024). Scrutinizing the current management units of the greater argentine in the light of genetic structure. (external link)
• Langbehn, Tom; Aarflot, Johanna Myrseth ; Freer, Jennifer J. et al. (2023). Visual predation risk and spatial distributions of large Arctic copepods along gradients of sea ice and bottom depth. (external link)
• Meister, Nadja; Langbehn, Tom; Varpe, Øystein et al. (2023). Blue mussels in western Norway have vanished where in reach of crawling predators. (external link)
• Ljungström, Anna Jeja Gabriella; Langbehn, Tom; Jørgensen, Christian (2023). Bergmann patterns in planktivorous fishes: A light-size or zooplankton community-size rule is just as valid explanation as the temperature-size rule. (external link)
• Ottmann, Daniel; Langbehn, Tom; Reglero, Patricia et al. (2023). Model of mesopelagic fish predation on eggs and larvae shows benefits of tuna spawning under full moon. (external link)
• Dunn, Muriel; McGowan-Yallop, Chelsey; Pedersen, Geir et al. (2023). Model-informed classification of broadband acoustic backscatter from zooplankton in an in situ mesocosm. (external link)
• Geoffroy, Maxime; Langbehn, Tom Jasper; Priou, Pierre et al. (2021). Pelagic organisms avoid white, blue, and red artificial light from scientific instruments. (external link)
• Ljungström, Anna Jeja Gabriella; Langbehn, Tom Jasper; Jørgensen, Christian (2021). Light and energetics at seasonal extremes limit poleward range shifts. (external link)
• Langbehn, Tom; Aksnes, Dag Lorents; Kaartvedt, Stein et al. (2021). Poleward distribution of mesopelagic fishes is constrained by seasonality in light. (external link)
• Butler, W.E.; Gudmundsdottir, L.; Logemann, K. et al. (2020). Egg size and density estimates for three gadoids in Icelandic waters and their implications for the vertical distribution of eggs along a stratified water column. (external link)
• Sguotti, Camilla; Otto, Saskia A; Frelat, Romain et al. (2019). Catastrophic dynamics limit Atlantic cod recovery. (external link)
• Kaartvedt, Stein; Langbehn, Tom; Aksnes, Dag Lorents (2019). Enlightening the ocean’s twilight zone. (external link)
• Langbehn, Tom; Aksnes, Dag Lorents; Kaartvedt, Stein et al. (2019). Light comfort zone in a mesopelagic fish emerges from adaptive behaviour along a latitudinal gradient. (external link)
• Langbehn, Tom; Varpe, Øystein (2017). Sea-ice loss boosts visual search: fish foraging and changing pelagic interactions in polar oceans. (external link)

Poster

• Scherrer, Kim Josefin Niklasdotter; Langbehn, Tom; Ljungström, Anna Jeja Gabriella et al. (2023). Unintended climate consequences of fishery management breakdown. (external link)
• Jørgensen, Christian; Langbehn, Tom Jasper; Ljungström, Anna Jeja Gabriella et al. (2023). Blue food, green food, and the nature crisis. (external link)
• Langbehn, Tom Jasper; Bourgouin, Andeol; Enberg, Katja et al. (2021). Exploring the emergent niche of Greater silver smelt (Argentina silus) along gradients of topography, light and advection. (external link)
• Langbehn, Tom Jasper; Enberg, Katja; Jørgensen, Christian (2020). Exploring the emergent niche of Greater argentine (Argentina silus) along gradients of topography, light and advection. (external link)
• Langbehn, Tom; Aksnes, Dag Lorents; Kaartvedt, Stein et al. (2019). Poleward distribution of mesopelagic fish is constrained by seasonality in light. (external link)
• Langbehn, Tom; Aarflot, Johanna Myrseth; Varpe, Øystein (2019). Sea-ice loss is bad news for large copepods. (external link)
• Langbehn, Tom; Ljungström, Anna Jeja Gabriella; Aksnes, Dag Lorents et al. (2017). Increasing marine food production through ecolabeling. (external link)
• Langbehn, Tom (2017). Limits to northwards range shifts of fish stocks under climate warming - a fish can't eat food it can't find. (external link)
• Langbehn, Tom; Varpe, Øystein (2017). Photoperiodic implications on visual foraging in polar marine ecosystems. (external link)
• Langbehn, Tom; Ljungström, Anna Jeja Gabriella; Fiksen, Øyvind et al. (2017). Introducing a new hypothesis: Southward shifts of species distributions under climate change?. (external link)
• Langbehn, Tom; Varpe, Øystein (2016). Photoperiodic implications on visual foraging in polar marine ecosystems. (external link)
• Langbehn, Tom (2016). Seasonal seas- limits to northward range shifts of marine organisms under climate warming. (external link)
• Langbehn, Tom; Varpe, Øystein (2016). Photoperiodic implications on visual foraging in polar marine ecosystems. (external link)
• Langbehn, Tom; Varpe, Øystein (2015). Visual search as a trait: consequences of sea ice change in high latitude oceans. (external link)
• Langbehn, Tom; Landschoff, Jannes (2012). Live fast, die young - what do changes in age structure tell us about the management of cod stocks. (external link)

Academic literature review

• Woods, P J; Macdonald, J I; Bárðarson, H et al. (2021). A review of adaptation options in fisheries management to support resilience and transition under socio-ecological change. (external link)

Interview

• Asbjørn, Leirvåg; Langbehn, Tom Jasper; Ljungström, Anna Jeja Gabriella (2021). Årstidene begrenser artsutbredelser i havet. (external link)

Masters thesis

• Fredriksen, Astrid Holtan; Jørgensen, Christian; García-Seoane, Eva et al. (2021). Trophic structure of mesopelagic species in the Northeast Atlantic Ocean based on stable isotopes of carbon and nitrogen. (external link)

Website (informational material)

• Langbehn, Tom; Nyvoll, Jørn Berger (2020). Sea ice disappearing may be good news for the fish in the Arctic, but bad news for the zooplankton!. (external link)

Doctoral dissertation

• Langbehn, Tom; Jørgensen, Christian; Fiksen, Øyvind et al. (2019). Light and visual foraging in the pelagic: Opportunities and constraints along gradients of seasonality. (external link)

Short communication

• Geoffroy, Maxime; Berge, Jørgen; Majaneva, Sanna Kristiina et al. (2018). Increased occurrence of the jellyfish Periphylla periphylla in the European high Arctic. (external link)

See a complete overview of publications in Cristin.