Attributes / relations provided by
♦ 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
♦ ²Cirtwill, Alyssa R.; Eklöf, Anna (2018), Data from: Feeding environment and other traits shape species' roles in marine food webs, Dataset, https://doi.org/10.5061/dryad.1mv20r6
♦ ³The Diet of the Knot (Calidris canutus) on Rocky Shores of Eastern Scotland in Winter, Ronald W. Summers & Shelagh M. Smith, Ardea 71 (1983): 151-153