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Maria Ovegård

Maria Ovegård
Marine Ecology and Role of Fish Predators and Fishery Environmental Monitoring and Assessment Analyst, Fil. PhD


Research focus

-Wildlife ecology and conservation

-Behavioural ecology

-Foraging strategies and food web dynamics

-Human conflicts with wildlife

My primary research is within the ecological role of fish predators and predator interactions with commercial and recreational fishery. My expertise is the identification and quantification of prey species. I have mostly worked with the diet of birds and mammals, but also fish predators. The research includes the use of multivariate techniques to relate spatial and temporal differences in diet to the structure and variations in fish communities and fishery catch.

Research also involves determining the distribution of the seal worm, also called cod worm, which cause problems for the fishery by their presence in the musculature, or files of fish. With an increasing seal population (the final host in which the parasite reproduce) there is concerns of an increase of the infestation rate in fish, especially the commercially important cod.

I have also been working with the behaviour of porpoises around fishing nets, with porpoise click loggers, to determine if they are attracted to the nets (fish in the net) or incidentally get caught in nets.


Selected publications

Journal and Book chapter Publications

Ovegård, M.K., Öhman, K. and Mikkelsen J. S., and Jepsen, N. (2017) Cormorant predation overlaps with fish communities and commercial fishery interest in a Swedish lake. Marine and Freshwater Research

Lunneryd, S-G, Boström M. K. and Aspholm, P. E. (2014) Seal worm (Pseudoterranova sp.) infection in grey seals (Halichoerus grypus), cod (Gadus morhua) and shorthorn sculpin (Myoxocephalus scorpius) in the Baltic Sea. Parasitology Research. DOI 10.1007/s00436-014-4187-z.

Boström, M., Krog, C., Kindt Larsen, L., Lunneryd, S-G. & Wahlberg, M. (2013) The acoustic activity of harbour porpoise (Phocoena phocoena) around gill nets. Aquatic Mammals, 39(4): 389-396.

Johansen, S., Larsen, O.N., Christensen-Dalsgaard, J., Seidelin, L., Huulvej, T., Jensen, K., Lunneryd, S-G., Boström, M. & Wahlberg, M. (2013) In-air and underwater hearing in the great cormorant (Phalacrocorax carbo sinensis). in A Popper & A Hawkins (eds), Effects of Noise on Aquatic Life II. Springer. Advances in Experimental Medicine and Biology

Östman, Ö., Boström, M.K., Bergström, U., Andersson, J. and Lunneryd, S-G. (2013) Estimating Competition between Wildlife and Humans-A Case of Cormorants and Coastal Fisheries in the Baltic Sea. PLoS ONE, 8 (12): 1-8. (DOI: 10.1371/journal.pone.0083763).

Boström, M.K, Lunneryd, S-G., Hanssen, H., Karlsson, L. and Ragnarsson, B. (2012) Diet of the Great Cormorant (Phalacrocorax carbo sinensis) at two areas in the Bay Lövstabukten, South Bothnian Sea, Sweden, based on otolith size-correction factors. Ornis Fennica, 89.

Boström, M.K., Östman, Ö., Bergenius, M.A.J. and Lunneryd, S.G. (2012) Cormorant diet in relation to temporal changes in fish communities. ICES Journal of Marine Sciences 69(2): 175-183.

Östman, Ö., Bergenius, M., Boström M.K. and Lunneryd, S-G. (2012) Do cormorant colonies affect local fish communities in the Baltic Sea? Canadian Journal of Fisheries and Aquatic Sciences 69: 1047-1055.

Boström, M.K, Lunneryd, S-G., Karlsson L., Ragnarsson, B. (2009) Cormorant impact on trout (Salmo trutta) and salmon (Salmo salar) migrating from the river Dalälven emerging in the Baltic Sea. Fisheries Research 98: 16-21.



Environmental Assessment Specialist at the Department of Aquatic Resources; Institute of Marine Research, joint staff
Telephone: +46104784119, +46761268059
Postal address:
Turistgatan 5
453 30 LYSEKIL
Visiting address: Turistgatan 5, Lysekil

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