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SITE NAME
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Indigirka River, lower reaches, Chokurdakh, Russia
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| Contact details
(phone/fax//e-mail//address): |
| (095)391-42-62 (home) // owl_bird@mail.ru // Domodedovskaya St., 27-65, Moscow, 115589, Russia
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PROJECT DETAILS |
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Project name:
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Arctic expedition of Institute of ecology and evolution
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Start of survey:
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End
of survey: |
Team
size: |
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5.06
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5.08
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2
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WEATHER
CONDITIONS
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Weather conditions: |
| The season was generally late and cold, but spring developed rapidly. Snowcover reduced to 50% on 11-13 June, and was completely gone by 16 June. Rivers broke up on 11 June. According to local people opinion rains were more common than usual.
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| Date of 50%
snow-cover: |
11-13.06
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| Date of ice-break on
rivers: |
11.06
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| Date of final loss of
snow: |
16.06
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BIOTIC
CONDITIONS
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| Rodents abundance evaluation: |
average
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Breeding conditions:
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Numbers of Arctic Foxes were lower than average, and inhabited dens were not found. Snowy Owls did not nest, but Short-eared Owls were common and bred. Rough-legged Buzzards were breeding only in forest tundra and southern tundra.
Loss of bird nests during incubation was not high, and main predation probably occurred in brood-raring period. Mass hatching coincided with the period of adverse weather, but this was unlikely to impact strongly reproductive success. Breeding success can be evaluated as average.
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Rodent dynamics:
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| Lemmings were met in tundra and forest tundra, but had low numbers, while voles in forest tundra were abundant (in, particular, Grey-sided Vole).
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Rodent species recorded:
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| Latin | Abundance |
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| Lemmus sibiricus | rare |
| Clethrionomys rufocannus | common |
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Summary
of fauna studies: |
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