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♦ ¹Energy flow of a boreal intertidal ecosystem, the Sylt-Rømø Bight, Dan Baird, Harald Asmus, Ragnhild Asmus, Mar Ecol Prog Ser 279: 45–61, 2004
♦ ²Davoren, G.K., et al. "Diets and distributions of Leach's storm-petrel (Oceanodroma leucorhoa) before and after an ecosystem shift in the Northwest Atlantic." Canadian Journal of Zoology 87.9 (2009): 787+. Academic OneFile. Web. 15 July 2014.