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RESPONDENT
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Sergei Rupasov
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SITE NAME
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Ngoyuyakha River mouth and adjacent coastline of the Baidaratskaya Gulf, Russia
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| Contact details
(phone/fax//e-mail//address): |
| 8(495)146-97-47 // sergei_rupasov@mail.ru // Rubleuvskoe Shosse 11-8, Moscow, 121108, Russia
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PROJECT DETAILS |
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Project name:
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Bird fauna of Baidaratskaya Bay coast-line
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Start of survey:
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End
of survey: |
Team
size: |
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20.07
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31.07
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1
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WEATHER
CONDITIONS
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| Season phenology: |
average
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Weather conditions: |
| A relatively dry and moderately warm weather prevailing in July changed to cold and rainy at the end of period of observations, on 20-31 July, which could have adversely affected the survival of the late broods in birds.
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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: |
low
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Breeding conditions:
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Arctic Foxes were fairly common and bred. Due to low rodent abundance foxes should have certainly had an adverse impact on reproduction of birds. Avian predators were very rare, including Rough-legged Buzzards, which did not show indications of breeding. Owls were not seen, and a single Long-tailed Skua was recorded. Rare Arctic Skuas nested. Herring Gulls were numerous, and some pairs successfully raised chicks.
Willow Grouse had low numbers. We recorded broods of Red-throated and Black-throated divers, Bewick's Swans, King Eiders, Long-tailed Ducks, several species of waders (Ringed Plover, Red-necked Phalarope, Little Stint) and passerines (White Wagtail, Meadow and Red-throated pipits, Lapland Buntings).
Generally, breeding conditions were, probably, moderately favourable for most species of birds in this season.
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Rodent dynamics:
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| Rarity of undersnow nests and a few records of single animals indicated a low stage in the populations of Siberian and Collared lemmings. Other species of rodents were not recorded.
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Rodent species recorded:
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| Latin | Abundance |
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| Lemmus sibiricus | rare |
| Dicrostonyx torquatus | rare |
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Summary
of fauna studies: |
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