Attributes / relations provided by
♦ ¹Predator-Prey Relationships and Food Sources of the Skagerrak Deep-Water Fish Assemblage, O. A. Bergstad, Å. D. Wik and Ø. Hildre, J. Northw. Atl. Fish. Sci., Vol. 31, 2003, pp. 165-180
♦ ²Energy flow of a boreal intertidal ecosystem, the Sylt-Rømø Bight, Dan Baird, Harald Asmus, Ragnhild Asmus, Mar Ecol Prog Ser 279: 45–61, 2004