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M.S.W. Bradstreet, and W.E. Cross. (1982). Trophic Relationships at High Arctic Ice Edges. Arctic. 35(1), pp. 1-12.

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Global Web Database (http://globalwebdb.com): an online collection of food webs. Accessed via https://www.globalwebdb.com/Service/DownloadArchive on 2017-10-12.

Source archive URL:
https://github.com/globalbioticinteractions/globalwebdb/archive/12f2c1ad026e634aea47dc40c0a5e9d463165058.zip

Reference citation:
Labansen A.L , Lydersen C, Levermann ?N, Haug T and Kovacs KM. 2011. Diet of ringed seals (Pusa hispida) from Northeast Greenland. Polar Biology 34: 227-234.

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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

Source archive URL:
https://github.com/globalbioticinteractions/planque2014/archive/0994e910009d44fe2effb51a354927ef6302cd26.zip

Source DOI:
10.1890/13-1062.1

Reference citation:
Crawford, J.A., L.T. Quakenbush and J.J. Citta. 2015. A comparison of ringed and bearded seal diet, condition and productivity between historical (1975-1984) and recent (2003-2012) periods in the Alaskan Bering and Chukchi seas. Progress in Oceanography 136:133-150.

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Palomares, M.L.D. and D. Pauly. Editors. 2018. SeaLifeBase. World Wide Web electronic publication. www.sealifebase.org, version (10/2018).

Source archive URL:
https://github.com/globalbioticinteractions/sealifebase/archive/d613f898a00ebaf4555eff844a71550435038e81.zip

Reference citation:
Weslawski, J.M., M. Ryg, T.G. Smith and N.A. Oritsland. 1994. Diet of ringed seals (Phoca hispida) in a Fjord of West Svalbard. Arctic 47(2):109-114.

Source citation:
Palomares, M.L.D. and D. Pauly. Editors. 2018. SeaLifeBase. World Wide Web electronic publication. www.sealifebase.org, version (10/2018).

Source archive URL:
https://github.com/globalbioticinteractions/sealifebase/archive/d613f898a00ebaf4555eff844a71550435038e81.zip

Reference citation:
M. S. W. Bradstreet and W. E. Cross, Trophic relationships at High Arctic ice edges, Arctic 3(1)5:1-12, from p. 9 (1982).

Source citation:
Semantic Prototypes in Research Ecoinformatics (SPIRE). Data provided by Joel Sachs. See also http://ebiquity.umbc.edu/get/a/publication/297.pdf .

Source archive URL:
https://github.com/globalbioticinteractions/spire/archive/b2f52536ed93797820e4295fe1097310d37ddbaa.zip