Reference citation:
Nehls, G. 1989. Occurrence and food consumption of the common eider, Somateria mollissima, in the Wadden Sea of Schleswig-Holstein. Helgolander Meeresunters. 43:385-393.

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:
Huxham M, Beany S, Raffaelli D (1996) Do parasites reduce the chances of triangulation in a real food web? Oikos 76:284-300

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

Reference citation:
Hall SJ, Raffaelli D (1991) Food-web patterns: lessons from a species-rich web. J Anim Ecol 60:823-842

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