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Tonje Knutsen Sørdalen

Postdoctoral Research Fellow

I am a marine ecologist working on coastal species of crustacean and fish inside and outside marine protected areas (MPAs). I am particularly interested in eco-evolutionary processes with a focus on harvesting and protection effects, reproductive behaviour and sexual selection. Current research focus on the development of computer vision (deep learning) to detect, classify, track and re-identify fish in marine systems using an innovative combination of pit-telemetry and underwater cameras. In the past, I have used genetic parent-offspring relationships to study fine-scale mate selection in wild populations of European lobster and mark-recapture studies for assessing the selectivity and impact of the commercial wrasse fishery supplying the aquaculture industry with cleaner fish. I am also involved in various projects and development of underwater observational platforms and camera rigs and seamless integration of different data sources. Feel free to mention me in a post.

Projects

http://www.uia.no/senter-og-nettverk/senter-for-marin-forskning

http://coastalresearch.uia.no/

Scientific publications

  • Sørdalen, Tonje Knutsen; Halvorsen, Kim Aleksander Tallaksen; Vøllestad, Leif Asbjørn; Moland, Even; Olsen, Esben Moland (2020). Marine protected areas rescue a sexually selected trait in European lobster. Evolutionary Applications. ISSN: 1752-4571. 13 (9). s 2222 - 2233. doi:10.1111/eva.12992.
  • Olsvik, Erlend; Trinh, Christian M.D.; Knausgård, Kristian Muri; Wiklund, Arne; Sørdalen, Tonje Knutsen; Kleiven, Alf Ring; Lei, Jiao; Goodwin, Morten (2019). Biometric fish classification of temperate species using convolutional neural network with squeeze-and-excitation. Lecture Notes in Computer Science (LNCS). ISSN: 0302-9743. 11606 LNAIs 89 - 101. doi:10.1007/978-3-030-22999-3_9.
  • Sørdalen, Tonje Knutsen; Halvorsen, Kim Aleksander Tallaksen; Harrison, Hugo B.; Ellis, Charlie D.; Vøllestad, Leif Asbjørn; Knutsen, Halvor; Moland, Even; Olsen, Esben Moland (2018). Harvesting changes mating behaviour in European lobster. Evolutionary Applications. ISSN: 1752-4571. 11 (6). s 963 - 977. doi:10.1111/eva.12611.
  • Halvorsen, Kim Aleksander Tallaksen; Larsen, Torkel; Sørdalen, Tonje Knutsen; Vøllestad, Leif Asbjørn; Knutsen, Halvor; Olsen, Esben Moland (2017). Impact of harvesting cleaner fish for salmonid aquaculture assessed from replicated coastal marine protected areas. Marine Biology Research. ISSN: 1745-1000. 13 (4). s 359 - 369. doi:10.1080/17451000.2016.1262042.
  • Halvorsen, Kim Aleksander Tallaksen; Sørdalen, Tonje Knutsen; Vøllestad, Leif Asbjørn; Skiftesvik, Anne Berit; Espeland, Sigurd Heiberg; Olsen, Esben Moland (2017). Sex-and size-selective harvesting of corkwing wrasse (Symphodus melops)-a cleaner fish used in salmonid aquaculture. ICES Journal of Marine Science. ISSN: 1054-3139. 74 (3). s 660 - 669. doi:10.1093/icesjms/fsw221.
  • Halvorsen, Kim Aleksander Tallaksen; Sørdalen, Tonje Knutsen; Durif, Caroline; Knutsen, Halvor; Olsen, Esben Moland; Skiftesvik, Anne Berit; Rustand, Torborg Emmerhoff; Bjelland, Reidun Marie; Vøllestad, Leif Asbjørn (2016). Male biased sexual size dimorphism in the nest building corkwing wrasse (Symphodus melops): implications for a size regulated fishery. ICES Journal of Marine Science. ISSN: 1054-3139. 73 (10). s 2586 - 2594. doi:10.1093/icesjms/fsw135.
  • Ellis, Charlie; Hodgson, DJ; Andre, Carl; Sørdalen, Tonje Knutsen; Knutsen, Halvor; Griffiths, Amber (2015). Genotype Reconstruction of Paternity in European Lobsters (Homarus gammarus). PLOS ONE. ISSN: 1932-6203. 10:e0139585 (11). doi:10.1371/journal.pone.0139585.
  • Halvorsen, Kim Aleksander Tallaksen; Sørdalen, Tonje Knutsen (2016). Trøbbel i havet.
  • Sørdalen, Tonje Knutsen; Halvorsen, Kim Aleksander Tallaksen (2015). Legal size limit implies strong fisheries selection on sexually selected traits in a temperate wrasse providing male-only parental care.

Last changed: 4.08.2020 10:08