|
|
RESPONDENT
|
|
Vadim Ryabitsev
|
|
|
SITE NAME
|
|
Yaibari River, Yamal, Russia
|
|
| Contact details
(phone/fax//e-mail//address): |
| (343)-2-605-605/(343)-2-608-256 // riabits@etel.ru // Schorsa St., 30-32, Ekaterinburg, 620142, Russia
|
|
PROJECT DETAILS |
|
|
|
Start of survey:
|
End
of survey: |
Team
size: |
|
|
|
|
|
WEATHER
CONDITIONS
|
|
|
|
Weather conditions: |
| Spring was exceptionally late and cold. Snow-free patches, covering in total 10-15% of the area, appeared only by 17 June; snowstorms (when the ground became completely covered with snow again) continued until 22 June. Snow only melted on about 80% of the area at the beginning of July with the ice breaking up by 28 June.
|
|
|
|
|
|
|
|
| Date of ice-break on
rivers: |
|
|
| Date of final loss of
snow: |
|
|
BIOTIC
CONDITIONS
|
| Rodents abundance evaluation: |
low
|
|
|
Breeding conditions:
|
Mass mortality of lemmings, which were abundant the year before, took place in winter. In spring their corpses, which melted out from under the snow served as the main food for numerous Arctic Foxes, Common Weasels Mustela erminea and nomadic skuas. All these predators switched to feeding on bird clutches later.
Birds arrived late, nevertheless the breeding population of waders was rather typical for the area. Those species, which were rare in the previous years (Ruff Philomachus pugnax, probably Turnstone and Curlew Sandpiper) were either not breeding, or probably did not breed (the two latter species). Chicks hatched from only 13 of 62 wader nests, and these were mostly in those nests which were under the protection of our field camp. Late in July only single fledged Little and Temminck's Stint Calidris temminckii young were observed. Thus, the breeding performance of all wader species was almost totally unsuccessful.
|
|
|
Rodent dynamics:
|
|
|
|
Rodent species recorded:
|
|
|
|
|
Summary
of fauna studies: |
|
|
|