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RESPONDENT
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Tatyana Andreeva
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SITE NAME
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Schuchya River, middle 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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Project name:
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Quick survey at the site of previous studies
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Start of survey:
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End
of survey: |
Team
size: |
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20.06
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7.07
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2
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WEATHER
CONDITIONS
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Weather conditions: |
The season was very early by the beginning, but late in development, not extremal in conditions.
There was little snow, which was quickly gone due to April warmings. Coming water cracked the ice and went down quickly, so that the ice remained on spits. Some snowstorms occured during May, but snow melted by the end of month. Prolonged rains in the beginning of June extremely endured the spring. The full-scale summer began only on 1 July (when Tipulidae and Culicidae flied out). Summer months were not cold, but wet and windy. High water level in rivers pertained by the beginning of July, and judging by the meteo-data, did not decrease by autumn.
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| Date of 50%
snow-cover: |
mid May
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| Date of ice-break on
rivers: |
late May
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| Date of final loss of
snow: |
late May
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BIOTIC
CONDITIONS
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| Rodents abundance evaluation: |
high
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Breeding conditions:
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At the plain of southern Yamal appearance of early arriving species occured very early just after the snow-melt, and some small passerines even attempted to nest in late April, although unsuccessfully. Late arriving birds appeared in the usial dates. Mountains and up-lands of the Polar Urals remained unpopulated. Early removal of ice and snow from the flood-plain along with low flood benefited for its use by waders, including spits of the low flood-plain. Large lakes became ice-free not early - in the mid or late June, and their shores were less populated with birds than usial. Average and small lakes of the high floodplain and watersheds became snowfree early and had usial amount of birds. Strong winds and rains were the possible cause of death for many wader clutches at the watersheds, which led to appearance of wandering birds in substancial amounts on the river spits already in late June - early July (in particular, Limosa lapponica and Calidris minuta, the latter - from the north, as it rarely breeds in the area). For waterfowl conditions were, probably, fairly favourable.
Peak of Lemmus sibiricus and high density of Microtus voles led to very high density, early breeding and large broods (5 pullis) of the bussard, high density of Asio flammeus. Very high for this site nesting density of gyrfalcon and prevalance in his winter and early summer diet of the Lagopus lagopus. Usial nesting density of Merlins, Corvus corax, low density of White-tailed sea eagle, peregrine falcon and Aquila chrizaetus not recorded. Very high numbers of Anser fabalis, Cygnus cygnus, average - of Anser erythropus. Among ducks the most numerous were Aythia fuligula, Anas penelope, Clungula hyemalis, more numerous then usial were Melanitta fusca and Aythia marila. The numbers of waders were average, higher in floodplains, than on the watersheds, more numerous than usial - Xenus cinereus, C.temmincki, G.gallinago & G.stenura, less than usial - Eudr. morinellus.
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Rodent dynamics:
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Rodent species recorded:
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Summary
of fauna studies: |
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