|
|
RESPONDENT
|
|
Alexei Voronin
|
|
|
SITE NAME
|
|
Sarytaturku Lake area, Taimyr, Russia
|
|
| Contact details
(phone/fax//e-mail//address): |
| (095)319-67-40 // //
|
|
PROJECT DETAILS |
|
|
|
Start of survey:
|
End
of survey: |
Team
size: |
|
|
|
|
|
WEATHER
CONDITIONS
|
|
|
|
Weather conditions: |
| Summer was cold, with an average temperature of 6-7øC in July and 2øC in August. The only warm period was 7-10 July when air temperature reached 17-20øC. The last ice melted on small lakes by 1-5 August, and on Sarytaturku Lake by 10 August. Snowfall occurred 13-14 August.
|
|
|
|
|
|
|
|
| Date of ice-break on
rivers: |
|
|
| Date of final loss of
snow: |
|
|
BIOTIC
CONDITIONS
|
| Rodents abundance evaluation: |
average
|
|
|
Breeding conditions:
|
| Arctic Foxes successfully bred: 20 out of 37 checked dens were inhabited, with up to eight pups in families. Breeding Rough-legged Buzzards were common (broods of three to five), as were Snowy Owls (one to five per brood). Breeding Long-tailed Skuas were numerous. One Pomarine Skua chick was found. Herring and Glaucous Gulls stayed near nests, but neither clutches nor chicks were found. Thirteen wader species were found breeding. Ringed Plover clutches were trampled by Reindeer Rangifer tarandus. Pacific Golden Plover, Grey Plover, Turnstone, Spotted Redshank and Bar-tailed Godwit did not breed after 14 July due to chick mortality. Broods of Grey Phalarope Phalaropus fulicarius and Red-necked Phalarope were numerous, the former being most numerous. Little Stint, Dunlin, Curlew Sandpiper and Pectoral Sandpiper Calidris melanotos fledged young.
|
|
|
Rodent dynamics:
|
| Both lemming species had peak numbers: on average 4-13 individuals were caught per 100 trap-days in different habitats in early July. Although they bred in summer, the total lemming numbers in August decreased to 0.8-5 ind./100 trap-days.
|
|
Rodent species recorded:
|
| Latin | Abundance |
|---|
| Lemmus sibiricus | abundant |
| Dicrostonyx torquatus | abundant |
|
|
|
Summary
of fauna studies: |
|
|
|