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SITE NAME
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Fadyukuda River middle reaches, Taimyr Peninsula, Russia
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| Contact details
(phone/fax//e-mail//address): |
| (499)780-16-53 // taimyr@orc.ru // Glavnaya St. 19A-193, Moscow, 105173, Russia
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PROJECT DETAILS |
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Project name:
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Taimyr Reserve Expedition
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Start of survey:
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End
of survey: |
Team
size: |
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22.06
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23.08
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4
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WEATHER
CONDITIONS
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Weather conditions: |
| The spring was very early; by the start of the observation period (22 June) snow on the watersheds was practically gone. The summer was very warm and dry. The Upper Taimyra R. reached its low by early August, and some marsh polygons remaining water-logged in usual years went dry. Extremal weather events were not observed.
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| Date of ice-break on
rivers: |
23.06
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| Date of final loss of
snow: |
25.06
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BIOTIC
CONDITIONS
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| Rodents abundance evaluation: |
high
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Breeding conditions:
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Out of 33 Arctic Fox dens 22 had litters. An area of ca. 200 sq.km. housed 20 active nests of Rough-legged Bazzard, 3 of Peregrine Falcone and one of Snowy Owl - all with broods of no less than 3 chicks.
When the observations started waders had already laid full clutches. The more numerous species of plain tundras and marshes included Grey Plovers (2-3 pairs/sq.km.), Dunlins, Curlew Sandpipers, and Bar-tailed Godwits; on stream gravel beds and limestone plateaux - Ringed Plovers (5 pairs/sq.km.). Numerous juvenile birds from successfully fledged broods left the study area by the end of the third week of August.
All predators seemed to rely heavily on lemmings which were numerous that season and as a result only few bird nests were depredated.
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Rodent dynamics:
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| On the patchy tundras of watershed areas on average 19 Siberian Lemmings were caught per 100 trap-days and visual encounters with these animals occurred daily.
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Rodent species recorded:
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| Latin | Abundance |
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| Lemmus sibiricus | abundant |
| Dicrostonyx torquatus | common |
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Summary
of fauna studies: |
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