Populations of waders in three census areas at Scoresby Sund, central East Greenland, were studied during the three breeding seasons of 1973, 1974 and 1975. Ringed Plover (Charadrius hiaticula), Golden Plover (Pluvialis apricaria), Turnstone (Arenaria interpres), Knot (Calidris canutus), Dunlin (Calidris alpina) and Sanderling (Calidris alba) bred in the census areas, while Purple Sandpiper (Calidris maritima) and Red-necked Phalarope (Phalarupus lobatus) bred elsewhere in the region. Population densities were very low, compared to other areas further north in high arctic Greenland. Extensive, deep and late-thawing snow cover prevents waders from utilizing large areas in June.
Time of breeding showed a high correlation with the snow melting conditions in the respective areas and years. Breeding success was generally low; only Ringed Plover had more than 50% nest and egg survival. Nest failures were probably mostly due to predation by Arctic Foxes (Alopex lagopus). Observation and examination of individuals from post-breeding flocks in the second half of July indicated that these flocks contained mainly non-breeders, but failed and successful breeders were also present. Measurements on eggs, pulli and adults are presented.
Wader species observed
Discussion and summary
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