Attributes / relations provided by
♦ ¹Food habits of the coypu, Myocastor coypus, and its impact on aquatic vegetation in a freshwater habitat of NW Italy, Claudio PRIGIONI, Alessandro BALESTRIERI and Luigi REMONTI, Folia Zool. – 54(3): 269–277 (2005)
♦ ²Tscharntke, T. 1992. Cascade effects among four trophic levels: bird predation on galls affects density-dependent parasitism. Ecology 73:1689–1698