Trends and Fluctuations in Bird Populations on the Tundra at Cambridge Bay, Nunavut
Keywords:Black Brant, Branta bernicla nigricans, Black-bellied Plover, Pluvialis squatarola, Red-necked Phalarope, Phalaropus lobatus, High Arctic, Low Arctic, Cambridge Bay, Victoria Island, Nunavut
AbstractBird observations from the Cambridge Bay area on Victoria Island, Nunavut, in the summer of 2011 are presented and compared with those from the 1960s and 1980s. A total of 38 species was observed, compared with 42 in 1983 and 47 in 1986. Abundance of species of the High Arctic, such as Black Brant, Branta bernicla nigricans, Black-bellied Plover, Pluvialis squatarola, and Baird’s Sandpiper, Calidris bairdii, decreased, whereas numbers of the Red-necked Phalarope, Phalaropus lobatus, usually associated with the Low Arctic, increased markedly. Overall, the number of each species observed is rather stable and, for several species, the relative abundance does not seem to have changed significantly.
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