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RESPONDENT
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Diana Solovieva
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SITE NAME
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Sagastyr Island, northern Lena River Delta, Yakutia, Russia
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| Contact details
(phone/fax//e-mail//address): |
| 812 2306712/812 2306712(fax) // diana_solovyova@mail.ru // Obrucheva 38, Pevek, Chukotsky Okrug, Russia
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PROJECT DETAILS |
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Project name:
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Lena-Delta Reserve expedition
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Start of survey:
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End
of survey: |
Team
size: |
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4.06
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30.07
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2
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WEATHER
CONDITIONS
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| Season phenology: |
average
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Weather conditions: |
| Spring was average in timing, but very warm and rapid in development. Snowcover reduced to 50% on 4 June, and was gone by 11 June. River broke up on 19 June, extremal flood was not observed. Summer was average in temperature.
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| Season temperature: |
average
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| Date of 50%
snow-cover: |
4.06
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| Date of ice-break on
rivers: |
19.06
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| Date of final loss of
snow: |
11.06
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BIOTIC
CONDITIONS
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| Rodents abundance evaluation: |
average
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Breeding conditions:
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| Warm and rapid spring allowed mass breeding of southern for the site species like small-size gulls, Bewick's Swan, some waders. Nesting of Pintail and Long-billed Dowitcher was recorded in the area for the first time since the start of observations in 1992. A third in a row season of non-peak lemming numbers resulted in an almost complete absence of Arctic Foxes, non-breeding of owls, Rough-legged Buzzards, Pomarine Skuas. Predation was negligible and nesting successful in most species. Mild summer temperatures and somewhat prolonged autumn without frosts, presumably, promoted successful fledging.
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Rodent dynamics:
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Rodent species recorded:
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Summary
of fauna studies: |
| Breeding numbers were evaluated for Brent Geese at a colony on island Khardirgastaakg and for Steller's Eider and King Eider at Sagastir Island. Data will be included in the Nature Archives of Lena Delta Reserve for 1999-2000.
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