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RESPONDENT
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Sergey Paskhalny
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SITE NAME
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Seiyakha-Mutnaya River, Yamal Peninsula, Russia
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| Contact details
(phone/fax//e-mail//address): |
| (34992) 5-19-10 // spas2006@yandex.ru // Zelyonaya Gorka, 18-1, Labytnangi, Tumenskaya oblast, 629400, 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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3.08
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6.08
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WEATHER
CONDITIONS
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| Date of ice-break on
rivers: |
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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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Two investigated Arctic Fox dens had litters. In two surveyed areas the Rough-legged Buzzard breeding density was rather high: 0.33-0.43 pair/km2. A single Snowy Owl was observed; no skuas were seen.
Wader abundance was low in the beginning of August. The more commonly seen species included Ringed Plover (31.6% of all sightings), Temminck's Stint (26.3%) and Wood Sandpiper Tringa glareola (17.5%). The less abundant species were Ruff (8.8%) (alarming with broods Reeves), Red-necked Phalaropes, Dunlin and Little Stints. The wader breeding success was deemed poor. Judging from the number of birds behaving distractively, Common Ringed Ploves and Temminck's Stints fared better than the other species. The factors explaining such results were the unfavourable weather conditions and perhaps a heavy predator pressure during the first half of the summer.
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Rodent dynamics:
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| Lemming population numbers roughly estimated on 3-6 August were low: signs of their summer activities and winter nests were few and far apart. The Narrow-skulled Vole Microtus gregalis numbers were high and active colonies of this rodent were ubiquitous, especially so in the meadow-like tundras of the anthropogenic origin. These were the voles that made up most of the Rough-legged Buzzard (chicks) and Arctic Fox diet.
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Rodent species recorded:
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Summary
of fauna studies: |
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