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SITE NAME
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Pura River and Pyasina River basins, Taimyr, Russia
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| Contact details
(phone/fax//e-mail//address): |
| (3919)468504(h)/(3919)468693(o) // ya.kokorev@norcom.ru // Naberezhnaya Urvantseva 23-271, Norilsk, 663300, Russia
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PROJECT DETAILS |
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Start of survey:
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End
of survey: |
Team
size: |
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5.07
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11.08
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2
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WEATHER
CONDITIONS
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| Season phenology: |
average
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Weather conditions: |
| On 4-5 June temperature reached +15øC, but in the following two weeks weather became cooler, with rains, and occasionally snow. Flood was a little later than usual and not high. Further phenological events developed according to scenario of an average season. However, in July and August there were few warm days, almost daily moderate to strong winds were blowing, often rained. Still, weather anomalies were generally not recorded.
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| Date of ice-break on
rivers: |
20-25 June
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| Date of final loss of
snow: |
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BIOTIC
CONDITIONS
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| Rodents abundance evaluation: |
high
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Breeding conditions:
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| High lemming abundance determined high numbers and good reproductive success of Snowy Owls, Rough-legged Buzzards and other rodent-specialized predators, as well as wildfowl, geese in particular. Numbers of waders were also substantially higher than in 1998. Peregrine Falcons were breeding successfully. Arctic Foxes were abundant and occupied 35-40% of known dens, but their impact on wildfowl was minimal. For example, eggs in all nests in a 5-pair colony of Red-breasted Geese near Snowy Owl nest hatched successfully, in spite of presence of an active fox den in 300 m. Reproductive success of passerines could have been affected by strong winds combined with rain and relatively low air temperatures. Generally, breeding conditions for birds can be characterized as "better than average", or favourable.
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Rodent dynamics:
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Rodent species recorded:
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Summary
of fauna studies: |
| Detailed studies of distribution, numbers and reproductive success of Red-Breasted Goose and Peregrine Falcon on rivers Pyasina and Pura (with tributaries) at an area spreading for 750-800 km.
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