BREEDING CONDITIONS REPORT, 2002


RESPONDENT

Sergei Sleptsov

SITE NAME

Adycha River lower reaches, Yakutia, Russia

Contact details (phone/fax//e-mail//address):
(4112)33-56-90/(4112)33-58-12/33-33-94(h) // sleptsov@mail.ru // Russia, 677891, Yakutsk, Pr. Lenina 41, Institute of biological problems of cryolitozona, office 423

PROJECT DETAILS

Project name:

Biodiversity of the Tuostakh resource reserve

Start of survey:

End of survey: Team size:

13.05

25.06

2


WEATHER CONDITIONS

Season phenology:

Weather conditions:

While bird migration started earlier than usual, spring was very cold, with returns of cold weather. Snow-cover was much thicker than usual, and was covered with ice-film after sudden cooling in mid May. Almost no melting occurred in the forest in May, and first flowers appeared on 24 May while normally this happens before 10 May.

 

Season temperature: cold
Season humidity:
Date of 50% snow-cover: 19-20.05
Date of ice-break on rivers: 23-31.05
Date of final loss of snow: 24.05

BIOTIC CONDITIONS

Rodents abundance evaluation:

high

Breeding conditions:

Rise of water on the Tuostakh River from 3 to 7 June resulted in complete flooding of the valley, and all colonies of Common Gulls and Common Terns there were destroyed. Only about half of Common Terns and 20% of Common Gulls started laying replacement clutches by 17 June. According to reports of local hunters broods of geese and ducks were substantially less common in August compared with previous years. Thus, breeding conditions were unfavourable for geese, ducks, gulls and terns which nest colonially on river islands.
 

Rodent dynamics:

Rodent species recorded:

LatinAbundance

Summary of fauna studies:

 

FAUNA IN STUDY AREA

Group of speciesPresenceAbundanceBreedingDetailed studiesComment
volesYesabundantbreeding  
gulls/ternsYesabundantbreeding  

 

SEABIRD COLONIES

speciesComment

 

WATERBIRD NON-BREEDING AGGREGATIONS

speciesAggregation typeNumberComment

 

HUMAN ACTIVITY IN THE STUDY AREA

Human activityComment
seasonal fishing/hunting 
summer field camp 
vicinities of a permanent human settlement 

 


Recommended citation

Sleptsov, S.M. (2002). Breeding conditions report for Adycha River lower reaches, Yakutia, Russia, 2002. ARCTIC BIRDS: an international breeding conditions survey. (Online database). Eds. M.Soloviev, P.Tomkovich. . Updated 11 Dec. 2008. Accessed .

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