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RESPONDENT
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Diana Solovieva
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SITE NAME
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Chaun-Palyavaam river delta, Russia
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| Contact
details (phone/fax//e-mail//address): |
| 812 2306712/812 2306712(fax) // diana_solovyova@mail.ru // Obrucheva 38, Pevek, Chukotsky Okrug, Russia |
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PROJECT DETAILS
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Project name:
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Biology of Spectacled Eider in the Chaun-Palyavaam river delta |
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Start of survey:
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End
of survey:
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Team
size:
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12.06 |
19.07 |
5 |
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WEATHER CONDITIONS
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| Season
phenology: |
average |
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Weather conditions: |
Spring was average in timing, and season was generally very warm and dry. Snow melted completely after rain on 28-29 May, and air temperature constantly rised above freezing in the first days of June. Ice-break occurred on 6 June. Warm southerly winds prevailed in the second half of June. Adeverse weather was not recorded. Mosquitoes emerged en masse on 18 June.
Weather data of the Chaun station are available at the website http://www.infospace.ru. |
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| Date of ice-break
on rivers: |
6.06 |
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| Date of final loss
of snow: |
30.05 |
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BIOTIC CONDITIONS
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| Rodents abundance evaluation: |
low |
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Breeding conditions:
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Both Arctic Foxes and Rough-legged Buzzards were uncommon and did not breed. Snowy Owls and Pomarine Skuas were not recorded.
Nesting density of Bewick's Swan increased compared with 2004 and reached 1.96 nest/km2. Breeding ducks included Pintail, Greater Scaup, Long-tailed Duck, King Eider and Spectacled Eider. Density of nesting Spectacled Eiders was 2.21 nest/km2 (1.89 nest/km2 in 2004), and breeding success of 16.5% was still high, although lower compared to 28.7% in the previous year. Other species of ducks also bred successfully.
Ross's Gulls and Grey Phalaropes did not nest in 2004-2005, but bred in 2003. Breeding waders included Grey Plover, Turnstone, Curlew Sandpiper, Dunlin, Red-necked Phalarope, Long-billed Dowitcher and Pectoral Sandpiper (the latter species at a very low density in 2005).
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Rodent dynamics:
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| An increase in vole numbers observed in 2004 represented, probably, subdued peak, because voles were very rare in 2005, while lemmings were not recorded.
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Rodent species recorded:
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Summary
of fauna studies: |
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