BREEDING CONDITIONS REPORT, 1991


RESPONDENT

N. Alekseeva

SITE NAME

Khanovey field station, middle Yamal, Russia

Contact details (phone/fax//e-mail//address):
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PROJECT DETAILS

Project name:

Start of survey:

End of survey: Team size:


WEATHER CONDITIONS

Season phenology: early

Weather conditions:

Spring was very early, the summer cool but without very cold periods and heavy rains.

 

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:

Breeding density of most wader species was a little higher than average. The density of Red-necked Phalarope was twice as high as the previous year (32.5 pairs/km2). The density of the Ruff was relatively high (15 nests/km2). Little Stints did not occur. Amongst raptors only Rough-legged Buzzards were fairly numerous (0.54 pairs/km2): the density of Long-tailed Skuas and Arctic Skuas was much lower (0.04 pairs/km2 and 0.09 pairs/km2 respectively). Snowy Owls did not occur. Breeding success of waders was not high, most probably because of the activity of non-breeding skuas. Fourteen nests of Ruff (of 22 found), seven nests of Red-necked Phalarope (of 15 found) and two nests of Wood Sandpiper Tringa glareola (of five found) were destroyed by skuas. They, together with Rough-legged Buzzards, reduced the number of wader chicks quite considerably.
 

Rodent dynamics:

The density of lemmings, especially of the Siberian Lemming, increased in comparison with their number in previous year and was estimated as moderate.

Rodent species recorded:

LatinAbundance
Lemmus sibiricuscommon

Summary of fauna studies:

 

FAUNA IN THE STUDY AREA

Group of speciesPresenceAbundanceBreedingDetailed studiesComment
lemmingsYescommon   
wadersYes hatchingYes 
buzzardsYesabundantbreeding  
skuasYesrare   

 

SEABIRD COLONIES

speciesComment

 

WATERBIRD NON-BREEDING AGGREGATIONS

speciesAggregation typeNumberComment

 

HUMAN ACTIVITY IN THE STUDY AREA

Human activityComment

 


Source(s):

Ryabitsev, V.K. 1998. Breeding conditions for waders Russian tundras in 1991. International Wader Studies 10:111-116.

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 Last updated: 11 Dec. 2008  

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