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PUBLICATIONS

Science Communication

PEER REVIEWED JOURNALS

2025

Baumgartner, C. D., Jourdain, E., Bonhoeffer, S., Borgå, K., Heide-Jørgensen, M. P., Karoliussen, R., ... & Foote, A. D. (2025). Kinship clustering within an ecologically diverse killer whale metapopulation. Heredity, 1-11. Link here

2024

Andvik, C., Jourdain, E., Borgen, A., Lyche, J. L., Karoliussen, R., Haug, T. and Borgå, K. (2024). Intercorrelations of chlorinated paraffins, dechloranes and legacy POPs in 10 species of marine mammals from Norway, in light of dietary niche. Environmental Science & Technology. Link here

Jourdain, E., Karoliussen, R., Fordyce Martin, S. L., Langangen, Ø., Robeck, T., Borgå, K., ... & Foote, A. D. (2024). Social and genetic connectivity despite ecological variation in a killer whale network. Proceedings of the Royal Society B, 291(2021), 20240524. doi: 10.1098/rspb.2024.0524. Link here

 

Andvik, C., Bories, P., Harju, M., Borgå, K., Jourdain, E., Karoliussen, R., ... & Blévin, P. (2024). Phthalate contamination in marine mammals off the Norwegian coast. Marine Pollution Bulletin, 199, 115936.doi: 10.1016/j.marpolbul.2023.115936. Link here

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2023

Haghani, A., Li, C. Z., Robeck, T. R., Zhang, J., Lu, A. T., Ablaeva, J., ... & Singh, K. (2023). DNA methylation networks underlying mammalian traits. Science, 381(6658), eabq5693. doi: 10.1126/science.abq5693. Link here

 

Remili, A., Dietz, R., Sonne, C., Samarra, F. I., Rikardsen, A. H., Kettemer, L. E., ... & McKinney, M. A. (2023). Quantitative fatty acid signature analysis reveals a high level of dietary specialization in killer whales across the North Atlantic. Journal of Animal Ecology, 92(6), 1216-1229. doi: 10.1111/1365-2656.13920. Link here

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2022

Günther, B., Jourdain, E., Rubincam, L., Karoliussen, R., Cox, S. L., & Arnaud Haond, S. (2022). Feces DNA analyses track the rehabilitation of a free-ranging beluga whale. Scientific Reports, 12(1), 6412. doi: 10.1038/s41598-022-09285-8. Link here

Matika, A. F., Jourdain, E., Cade, D. E., Karoliussen, R., and Hammond, P. S. (2022). Feeding characteristics and prey profitability in five herring feeding killer whales (Orcinus orca) in northern Norway. Marine Mammal Science 1-16. doi: 10.1111/mms.12931. Link here

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2021

Robeck, T. R., Fei, Z., Lu, A. T., Haghani, A., Jourdain, E., Zoller, J. A., ... & Horvath, S. (2021). Multi-species and multi-tissue methylation clocks for age estimation in toothed whales and dolphins. Communications biology, 4(1), 1-11. doi: 10.1038/s42003-021-02179-x. Link here

 

Jourdain, E., Goh, T., Kuningas, S., Similä, T., Vongraven, D., Karoliussen, R., Bisther, A. and Hammond, P. S. (2021). Killer whale (Orcinus orca) population dynamics in response to a period of rapid ecosystem change in the eastern North Atlantic. Ecology and Evolution. 00, 1– 18. doi: 10.1002/ece3.8364. Link here

Jourdain, E, Barrett-Lennard LG, Ellis GM, Ford JKB, Karoliussen R, Towers JR and Vongraven D (2021). Natural Entrapments of Killer Whales (Orcinus orca): A Review of Cases and Assessment of Intervention Techniques. Frontiers in Conservation Science, 2: 707616. doi: 10.3389/fcosc.2021.707616. Link here

Andvik, C.,  Jourdain, E., Lyche, J. L.,  Karoliussen, R., Borgå, K.  (2021). High levels of legacy and emerging contaminants in killer whales (Orcinus orca) from Norway, 2015 to 2017. Environmental Toxicology and Chemistry. doi: 10.1002/etc.5064. Link here

2020

Andvik, C.,  Jourdain, E.,  Ruus, A., Lyche, J. L,  Karoliussen, R., Borgå, K. (2020). Preying on seals pushes killer whales from Norway above pollution effects thresholds. Scientific Reports; 10: 1-10. doi: 10.1038/s41598-020-68659-y. Link here

Jourdain, E.,  Andvik, C.,  Karoliussen, R.,  Ruus, A,  Vongraven, D.,  Borgå, K. (2020) Isotopic niche differs between seal and fish‐eating killer whales (Orcinus orca) in northern Norway. Ecology and Evolution, 10: 4115-4127. doi: 10.1002/ece3.6182. Link here

2019

Jourdain, E., Ugarte, F., Víkingsson, G. A., Samarra, F. I. P., Ferguson S. H., Lawson, J., Vongraven, D. and Desportes, G. (2019). North Atlantic killer whale Orcinus orca populations: a review of current knowledge and threats to conservation. Mammal Review, 49: 384-400. doi: 10.1111/mam.12168. Link here

Jourdain, E., Karoliussen, R., de Vos, J., Zakharov, S. and Tougard, C. (2019). Killer whales (Orcinus orca) feeding on lumpfish (Cyclopterus lumpus) in Northern Norway. Marine Mammal Science, 36: 89-102. doi: 10.1111/mms.12618. Link here

Jourdain, E., Karoliussen, R., Curé, C., Massenet, M., Barrett-Lennard, L. and Ellis, G. (2019). A case of natural killer whale (Orcinus orca) entrapment in Northern Norway: from assessment to rescue. Aquatic Mammals, 45(1): 14-20. doi: 10.1578/AM.45.1.2019.14. Link here

2017

Alves, F., Towers, J. R., Baird, R. W., Bearzi, G., Bonizzoni, S., Ferreira, R., Halicka, Z., Alessandrini, A., Kopelman, A. H., Yzoard, C., Rasmussen, M. H., Bertulli, C. G., Jourdain, E., Gullan, A., Rocha, D., Hupman, K., Mrusczok, M.-T., Samarra, F. I. P., Magalhães, S., Weir, C. R., Ford, J. K. B. and Dinis, A. (2017). The incidence of bent dorsal fins in free-ranging cetaceans. Journal of Anatomy. doi: 10.1111/joa.12729. Link here

Jourdain, E., Samarra, F. I. P., Tavares, S. B. and Karoliussen, R. (2017). Incidence of probable vertebral column deformities in Norwegian and Icelandic killer whales (Orcinus orca). Aquatic Mammals, 43(6): 682-690. doi: 10.1578/AM.43.6.2017.682. Link here

Jourdain, E., Vongraven, D., Bisther, A., and Karoliussen, R. (2017). First longitudinal study of seal-feeding killer whales (Orcinus orca) in Norwegian coastal watersPloS One, 12(6): e0180099. doi: 10.1371/journal.pone.0180099. Link here

Jourdain, E. and Vongraven D (2017). Humpback whale (Megaptera novaeangliae) and killer whale (Orcinus orca) feeding aggregations for foraging on herring (Clupea harengus) in Northern Norway. Mammalian Biology - Zeitschrift für Säugetierkunde, 86: 27-32. doi: 10.1016/j.mambio.2017.03.006. Link here

REPORTS & OTHERS

Jourdain, Eve., Aasen, Vegard. B., Erdal, Olve V. & Johnsen Simon (2022). Identification Catalogue of the Killer whales that frequent inner Vestlandet. Figshare. Dataset. doi: 10.6084/m9.figshare.19350476. Link here

Bjørge A, Ryeng K, Jourdain E, Wiig J (2020) A short note on unusual high frequency of cetacean strandings in Northern Norway , 28 th March – 2 nd May 2020. IWC report SC/68B/E/06. Link here

Jourdain, E. and Karoliussen, R. Photo-Identification Catalogue of Norwegian killer whales 2007-2021. Figshare. Dataset. doi:10.6084/m9.figshare.4205226. Link to the latest version here

CONFERENCE PROCEEDINGS

We regularly attend conferences to communicate our latest findings and expand our network. Attended conferences include the Society of Environmental Toxicology and Chemistry (SETAC), the annual conference of the European Cetacean Society (ECS), the biennial conference of the Society for Marine Mammalogy (SMM) and the meeting of the Association for the Study of Animal Behavior (ASAB).

UNIVERSITY DISSERTATIONS

Eckerle, Alexander (2024). First description and Photo ID catalogue of the Risso's dolphin Grampus griseus population off northern Norway. Bachelor thesis. University of Munich, Germany.

Lee, Kiah (2024). Diet variability in Norwegian killer whales (Orcinus orca): evidence from quantitative fatty acid signature analysis (QFASA) and mercury levels. Master thesis. University of Oslo, Norway.

Catasús Folgueras, Elena (2023). Photo-identification and seasonal occurrence of long-finned pilot whales (Globicephala melas) off Vesterålen, northern Norway. Master thesis, Ghent University, Belgium.

Fagerlund, Carl (2023). Estimating the biomagnifying potential of mercury and chlorinated paraffins in a Norwegian Arctic food web and in killer whale (Orcinus orca). Master thesis. University of Oslo, Norway.

Falch, Amanda (2023). Spatiotemporal distribution of killer whales (Orcinus orca) along the Norwegian coast: a MaxEnt species distribution model including citizen science data. Master thesis. University of Oslo, Norway.

Høgh Åslein, Emma (2023). Killer whale (Orcinus orca) predation on harbour porpoise (Phocoena phocoena) in Hardangerfjord, western Norway. Master thesis. University of Oslo, Norway.

Jourdain, E. (2020). Dietary variations and specializations of killer whales (Orcinus orca) in Norway. Doctoral thesis. University of Oslo, Norway.

Matika, Aimee (2019). Dive characteristics, foraging energetics and prey profitability in northern Norwegian killer whale. BSc (Hons) thesis. University of St Andrews, UK.

Goh, Tiffany (2019). Investigating variation in survivorship of northern Norwegian killer whales from 1986-2018 during a period of rapid ecosystem change. Master thesis. University of St Andrews, UK.

​Andvik, Clare (2019). The effect of dietary preferences on the levels of organoohalogen contaminants and mercury in Norwegian killer whales. Master thesis. University of Oslo, Norway.

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Norwegian Orca Survey is the leading research organisation on Norwegian killer whales. Using ground-breaking technologies, and being year-round in the field, we deliver innovative knowledge with results available from scientific publications. We also respond to animal welfare cases. 

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Norwegian Orca Survey

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