Reference citation: N?ttestad, L., and Olsen, E. 2004. Whales and seals: top predators in the ecosystem. In The Norwegian Sea Ecosystem, pp. 395-434. Ed. by H. R. SKJOLDAL. Tapir Academic Press, Trondheim.
Source citation: Benjamin Planque, Raul Primicerio, Kathrine Michalsen, Michaela Aschan, Grégoire Certain, Padmini Dalpadado, Harald Gjøsæater, Cecilie Hansen, Edda Johannesen, Lis Lindal Jørgensen, Ina Kolsum, Susanne Kortsch, Lise-Marie Leclerc, Lena Omli, Mette Skern-Mauritzen, and Magnus Wiedmann 2014. Who eats whom in the Barents Sea: a food web topology from plankton to whales. Ecology 95:1430–1430. https://doi.org/10.1890/13-1062.1
