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RESPONDENT
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Eugeny Syroechkovski, Jr.
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SITE NAME
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Mordyyakha River to Mare-Sale polar station coast, Yamal, Russia
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| Contact details
(phone/fax//e-mail//address): |
| (095)246-71-54/(095)124-79-32 // ees@gcnet.ru // Institute of Ecology and Evolution, Leninski prospekt, 33, Moscow, 117071, 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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18.06
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20.06
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WEATHER
CONDITIONS
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Weather conditions: |
| Spring was obviously late: large parts remained snow-covered until the end of June, and the weather was windy with low temperatures and precipitation. By 20 June waders were only starting to breed, thus only single clutches were found.
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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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| Arctic Fox numbers were estimated as average to large: three out of five dens were occupied by breeding families. Breeding Rough-legged Buzzards were numerous (up to 1.5 nests/km2). Peregrine was common at the Nebeyakha river. Migrating skuas were abundant in June, but much less so in August. The breeding success of waders was perceived to be not high due to continuous predation as a consequence of the low numbers of lemmings.
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Rodent dynamics:
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| Large numbers of lemmings (lemming index 10) and Root Voles were recorded, and Northern Voles Clethrionamys glareolus were also found. In the last third of August lemming numbers were much lower, but vole numbers did not decrease to the same extent.
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Rodent species recorded:
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| Latin | Abundance |
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| Microtus oeconomus | abundant |
| Clethrionomys glareolus | abundant |
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Summary
of fauna studies: |
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