Breeding Bird Conditions in the Circumpolar Arctic During 2015

A review of breeding conditions for tundra birds in circumpolar Arctic in 2015 was
based on data from 53 localities or regions of Arctic and Subarctic (see
http://www.arcticbirds.net). The number of sites was higher than in 2014 (n=46) which disrupts the decreasing tendency of the recent years for dataflow of the project. As before, most
of the data came from questionnaires (n=25) or free-form reports (n=18), submitted by respondents. Information on several sites (n=10), mostly from Nearctic and usually less complete, was found on the Internet. As previously, geographic coverage was heavily biased towards Russia (n=36), including 15 reports from the European part of the country, 5 from
Western Siberia, 3 from Central Siberia (Taimyr and Severnaya Zemlya Archipelago), 3 from
Yakutia and 10 from Chukotka and Wrangel Island. Western part of European Arctic was represented by one report found on the Internet. Information from the New World was based on
reports from 5 sites in Alaska, 9 sites in Canada and 2 sites in Greenland. In total, information
was available from 37 sites in Eurasia and 16 sites in North America. Apparently, this unevenness of geographic coverage reflects differences in support to the survey by researchers,
rather than intensity of field studies in respective regions.