Oscar Nordahl
Researcher
Department of Biology and Environmental Science
Faculty of Health and Life Sciences
My names is Oscar Nordahl and I am enrolled as a PhD-student in Ecology at the Linnaeus University Centre for Ecology and Evolution in Microbial model Systems (EEMiS). I utilize the coastal fish community in the Baltic Sea as model system to study barriers to gene flow and local adaptations on a fine spatial scale. This is achieved by the use of a wide array of techniques: molecular tools to study genetic barriers; field and laboratory experiments to study local adaptations; field studies to detect phenotypic variation among populations.
My research groups
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Fish Ecology Baltic coastal populations of predatory fish, mainly perch and pike, has been greatly reduced in recent decades. Underlying causes can be altered food webs, competition and disrupted…
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Linnaeus University Centre for Ecology and Evolution in Microbial model Systems (EEMiS) EEMiS is a centre for research excellence studying ecological and evolutionary interactions from land to sea.
My ongoing research projects
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Project: Catch-and-release fishing - an invisible threat to aquatic ecosystems? Our aim for this project is to provide novel insights regarding long-term effects of catch-and-release fishing on…
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Project: Kalmar Baltic Tracking Network: Spatial ecology of the coastal fish community In this project we will study the movement ecology and habitat choice of the coastal Baltic Sea fish community…
Publications
Article in journal (Refereed)
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Berggren, H., Yildirim, Y., Nordahl, O., Larsson, P., Dopson, M., et al. (2024). Ecological filtering drives rapid spatiotemporal dynamics in fish skin microbiomes. Molecular Ecology. 33 (18).
Status: Published -
Bergström, K., Berggren, H., Nordahl, O., Koch-Schmidt, P., Tibblin, P., et al. (2024). Seasonal and Daily Movement Patterns by Wels Catfish (Silurus glanis) at the Northern Fringe of Its Distribution Range. Fishes. 9 (7).
Status: Published -
Münnich, J., Hoppmann, F., Berggren, H., Nordahl, O., Tibblin, P. (2023). The role of chemical communication in the predator-prey role reversal of northern pike (Esox lucius) and three-spined stickleback (Gasterosteus aculeatus). Fisheries Research. 258.
Status: Published -
Flink, H., Tibblin, P., Hall, M., Hellström, G., Nordahl, O. (2023). Variation among bays in spatiotemporal aggregation of Baltic Sea pike highlights management complexity. Fisheries Research. 259.
Status: Published -
Castagne, P., Paz-Vinas, I., Bouletreau, S., Ferriol, J., Loot, G., et al. (2023). Patterns of genetic variation in native and non-native populations of European catfish Silurus glanis across Europe. Biodiversity and Conservation. 32. 2127-2147.
Status: Published -
Hall, M., Nordahl, O., Forsman, A., Tibblin, P. (2023). Maternal size in perch (Perca fluviatilis) influences the capacity of offspring to cope with different temperatures. Frontiers in Marine Science. 10.
Status: Published -
Tibblin, P., Bergström, K., Flink, H., Hall, M., Berggren, H., et al. (2023). Higher abundance of adult pike in Baltic Sea coastal areas adjacent to restored wetlands compared to reference bays. Hydrobiologia. 850. 2049-2060.
Status: Published -
Berggren, H., Nordahl, O., Yildirim, Y., Larsson, P., Tibblin, P., et al. (2023). Effects of environmental translocation and host characteristics on skin microbiomes of sun-basking fish. Proceedings of the Royal Society of London. Biological Sciences. 290 (2013).
Status: Published -
Sunde, J., Yildirim, Y., Tibblin, P., Bekkevold, D., Skov, C., et al. (2022). Drivers of neutral and adaptive differentiation in pike (Esox lucius) populations from contrasting environments. Molecular Ecology. 31 (4). 1093-1110.
Status: Published -
Bergström, K., Nordahl, O., Söderling, P., Koch-Schmidt, P., Borger, T., et al. (2022). Exceptional longevity in northern peripheral populations of Wels catfish (Siluris glanis). Scientific Reports. 12 (1).
Status: Published -
Flink, H., Nordahl, O., Hall, M., Rarysson, A., Bergström, K., et al. (2021). Examining the effects of authentic C&R on the reproductive potential of Northern pike. Fisheries Research. 243.
Status: Published -
Hall, M., Nordahl, O., Larsson, P., Forsman, A., Tibblin, P. (2021). Intra-population variation in reproductive timing covaries with thermal plasticity of offspring performance in perch Perca fluviatilis. Journal of Animal Ecology. 90 (10). 2236-2347.
Status: Published -
Nordahl, O., Koch-Schmidt, P., Tibblin, P., Forsman, A., Larsson, P. (2020). Vertical movements of coastal pike (Esox lucius) : on the role of sun basking. Ecology of Freshwater Fish. 29 (1). 18-30.
Status: Published -
Nordahl, O., Koch-Schmidt, P., Sunde, J., Yildirim, Y., Tibblin, P., et al. (2019). Genetic differentiation between and within ecotypes of pike (Esox lucius) in the Baltic Sea. Aquatic conservation. 29 (11). 1923-1935.
Status: Published -
Nordahl, O., Tibblin, P., Koch-Schmidt, P., Berggren, H., Larsson, P., et al. (2018). Sun-basking fish benefit from body temperatures that are higher than ambient water. Proceedings of the Royal Society of London. Biological Sciences. 285 (1879).
Status: Published -
Tibblin, P., Berggren, H., Nordahl, O., Larsson, P., Forsman, A. (2016). Causes and consequences of intra-specific variation in vertebral number. Scientific Reports. 6.
Status: Published -
Berggren, H., Nordahl, O., Tibblin, P., Larsson, P., Forsman, A. (2016). Testing for local adaptation to spawning habitat in sympatric subpopulations of northern pike by reciprocal translocation of embryos. PLOS ONE. 11 (5).
Status: Published -
Tibblin, P., Forsman, A., Koch-Schmidt, P., Nordahl, O., Johannessen, P., et al. (2015). Evolutionary divergence of adult body size and juvenile growth in sympatric subpopulations of a top predator in aquatic ecosystems. American Naturalist. 186 (1). 98-110.
Status: Published
Article, review/survey (Refereed)
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Larsson, P., Tibblin, P., Koch-Schmidt, P., Engstedt, O., Nilsson, J., et al. (2015). Ecology, evolution, and management strategies of northern pike populations in the Baltic Sea. Ambio. 44 (Supplement 3). S451-S461.
Status: Published -
Forsman, A., Tibblin, P., Berggren, H., Nordahl, O., Koch-Schmidt, P., et al. (2015). Pike Esox lucius as an emerging model organism for studies in ecology and evolutionary biology: a review.. Journal of Fish Biology. 87 (2). 472-479.
Status: Published
Doctoral thesis, comprehensive summary (Other academic)
- Nordahl, O. (2018). Intraspecific diversity of pike (Esox lucius) in the Baltic Sea and new insights on thermoregulation in fish. Doctoral Thesis. Växjö, Linnaeus University Press. 39.