WIWO-reports published

WIWO home

Publication number 66. Stichting WIWO

Title: Birds of Medusa Bay, Northwest Taimyr, in 1997
Author(s): Sergei Khomenko, Sofia Rosenfeld & Sergei Dyluk.
Publication date: 1999
PDF-download: Birds of Medusa Bay, Northwest Taimyr, in 1997

Summary

This report presents the results of a study of breeding waders and other bird species in Medusa Bay, NW Taimyr in 1997. The study is part of a long-term monitoring scheme of the area around the Willem Barentsz Biological Station. The survey was carried out between 17 June and 26 July 1997 and included estimation of breeding bird densities and nesting success, Brent Goose feeding ecology and a survey of the Severo-Vostochnie Islands. Weather conditions were unfavourable with a late snow melt, and prolonged periods with low temperatures, strong winds and snowfall up to 19 June. Densities of Siberian Lemmings were low, leading to significant nest losses by Arctic Fox predation. Total density of waders decreased from 14.5 to 7.8 pairs per square km. between 25 June and 20 July. Probability of nest survival during incubation was 0.35 for Pacific Golden Plover, 0.54 for Ringed Plover. Curlew Sandpiper nest density was low, 2.4 pairs per square km in late June, and zero by the end of July. A similar decrease was found in Little Stint, and to a lesser extent in Dunlin, with 1.3 pairs per square km in June and 0.33 in July. Brent Geese were only found breeding on islands with Taimyr Gull colonies. Their diet consisted mainly of grasses (Poaceae) and rushes (Juncaceae). No Snowy Owls were observed breeding and numbers of Rough-legged Buzzard, Long-tailed and Pomarine Skuas were very low. A colony of Black Guillemots, and several colonies of Taimyr Gulls and Arctic Terns were found breeding on the Olenyi and Severo-Vostochnie Islands.


The report contains:
  • A Russian summary
  • Account of breeding waders
  • Brent Goose feeding ecology
  • List of found Vascular Plants and Phenology of plant blossoming