BREEDING CONDITIONS REPORT, 1993


RESPONDENT

Andrei Degtyarev

SITE NAME

Indigirka River delta, Russia

Contact details (phone/fax//e-mail//address):
(411-22)-455749 // dbr@sakha.ru, alazeya@yandex.ru // Dept. of Bioresources, Sverdlova, 14, Yakutsk, 677005, Russia

PROJECT DETAILS

Project name:

Start of survey:

End of survey: Team size:


WEATHER CONDITIONS

Season phenology:

Weather conditions:

Dates of spring were almost the same as long-term averages, except for the timing of ice break-up: as the water level was low, floating ice started to pass later than usual (on 14 June near Chokurdakh and on 21 June near Tabor); no large floods were observed. June was in general warm with short-term frosts. In July strong winds were frequent. Extensive rains occurred at the beginning of August.

 

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

BIOTIC CONDITIONS

Rodents abundance evaluation:

low

Breeding conditions:

Numbers of lemmings and Arctic Foxes were rather low, hence predator pressure was insignificant, and as a result waders bred successfully. Arrival and breeding of waders took place on the usual dates: complete clutches of Grey Phalarope and Ruff were found on 12 June. Grey Phalarope, Ruff, Pectoral Sandpiper, Long-billed Dowitcher Limnodromus scolopaceus and Grey Plover were the most common breeding waders.
 

Rodent dynamics:

Rodent species recorded:

LatinAbundance

Summary of fauna studies:

 

FAUNA IN THE STUDY AREA

Group of speciesPresenceAbundanceBreedingDetailed studiesComment
arctic foxesYesrare   
lemmingsYesrare   
wadersYes hatching  

 

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 1993. International Wader Studies 10:124-131.

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 Last updated: 11 Dec. 2008  

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