BREEDING CONDITIONS REPORT, 1994


RESPONDENT

Vladimir Morozov

SITE NAME

Yugorsky Peninsula, Russia

Contact details (phone/fax//e-mail//address):
(495)1553044 // piskulka@mtu-net.ru // Shebashevski Proezd, 7-16, Moscow, 125315, Russia

PROJECT DETAILS

Project name:

Start of survey:

End of survey: Team size:


WEATHER CONDITIONS

Season phenology: late

Weather conditions:

Spring was cold and prolonged. Due to heavier winter snowfalls, it melted slowly especially in the central and south-western part of the peninsula. River floods on 6-8 June were unusually high. In the northern part, summer was rather cold with frequent fog, although in the south and south-west it was comparatively warm and similar to other years.

 

Season temperature: cold
Season humidity:
Date of 50% snow-cover:
Date of ice-break on rivers:
Date of final loss of snow:

BIOTIC CONDITIONS

Rodents abundance evaluation:

average

Breeding conditions:

Relatively high numbers of lemmings enabled high breeding densities of Rough-legged Buzzards. Short-eared Owls bred in those areas with high lemming numbers. Snowy Owls and Pomarine Skuas Stercorarius pomarinus, however, did not start breeding. Arctic and Long-tailed Skuas S. parasiticus, S. longicaudus bred, the first in usual numbers, the latter in small numbers. Numbers of Arctic Foxes were not high, only some animals bred and their productivity was low. Weather conditions in general were favourable for breeding waders, but the predation rate by Arctic Foxes, resident avian predators and nomad flocks of skuas was quite high, so breeding success of waders can be estimated as average or even low. Only in Grey Plover Pluvialis squatarola was breeding highly successful - almost all breeding pairs reared fledged young.
 

Rodent dynamics:

Numbers of lemmings were at their greatest in April-May (judging by numerous records of winter nests), i.e. before the arrival of birds. By June, lemming numbers decreased, but were still rather high in some tundra areas.

Rodent species recorded:

LatinAbundance

Summary of fauna studies:

 

FAUNA IN THE STUDY AREA

Group of speciesPresenceAbundanceBreedingDetailed studiesComment
arctic foxesYes breeding  
lemmingsYescommon   
wadersYes hatching  
buzzardsYesabundantbreeding  
skuasYes breeding  
pomarine skuasYes no  
owlsYes breeding  

 

SEABIRD COLONIES

speciesComment

 

WATERBIRD NON-BREEDING AGGREGATIONS

speciesAggregation typeNumberComment

 

HUMAN ACTIVITY IN THE STUDY AREA

Human activityComment

 


Source(s):

Tomkovich, P.S. 1998. Breeding conditions for waders in Russian tundras in 1994. International Wader Studies 10:132-144.

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 Last updated: 11 Dec. 2008  

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