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RESPONDENT
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Tatyana Andreeva
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SITE NAME
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Enzoryakha River upper reaches, Yamal Peninsula, Russia
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| Contact details
(phone/fax//e-mail//address): |
| (095)151-10-02/916-491-16-07 // // Krasnoarmeyskaya St., 25-94, Moscow, 125319, 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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15.06
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15.07
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2
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WEATHER
CONDITIONS
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| Season phenology: |
average
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Weather conditions: |
| Spring development was slow due to low temperatures, but weather changed dramatically after 10 June. Except for snowstorm on 17 June and rains in late June the weather was hot and southeastern winds prevailed during the whole month. Waterbodies and marshes were drying out rapidly, and by mid July 80% of small waterbodies disappeared and many streams dried out.
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| Date of ice-break on
rivers: |
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| Date of final loss of
snow: |
19.06
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BIOTIC
CONDITIONS
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| Rodents abundance evaluation: |
low
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Breeding conditions:
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Despite cold weather in the beginning of June the following rapid increase of temperature resulted in mass emergence of Diptera flies on 20-22 June, which is extremely early. Extremely high activity of soil invertebrates on watersheds, in particular in mountain tundra, decreased to a very low level by 1 July which is also early. However, draught did not lead to decrease in numbers of nesting waders. After hatching of chicks many birds with broods moved from watersheds to wetter sites. Many flat-hillock marshes inhabited by Bar-tailed Godwits, Whimbrels and phalaropes dried out completely by hatching time. European Golden Plovers were common in tundra-like habitats of the river valley. Common and Pintail snipes were equally and highly abundant in the river valley.
Long-tailed Skuas were common and bred (pairs seen every 3-4 km), and a single pair of Arctic Skuas was observed. A single, probably non-breeding, pair of Rough-legged Buzzards and a single pair of Ravens were seen.
Birds could suffer from predation by skuas and from trampling of clutches by migrating reindeers, several thousands of which were passing by as late as the end of June through a belt 4 km wide.
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Rodent dynamics:
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| Rodent numbers were low, and they were only represented by isolated colonies of Narrow-skulled Voles.
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Rodent species recorded:
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| Latin | Abundance |
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| Microtus gregalis | rare |
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Summary
of fauna studies: |
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