Publishing House SB RAS:

Publishing House SB RAS:

Address of the Publishing House SB RAS:
Morskoy pr. 2, 630090 Novosibirsk, Russia



Advanced Search

Contemporary Problems of Ecology

2013 year, number 1

Ecology of the Range, Nesting and Migrations of the Eastern Population of Siberian Crane ( Grus leucogeranus Pallas, 1773)

N. I. GERMOGENOV, N. G. SOLOMONOV, A. E. PSHENNIKOV, A. G. DEGTYAREV, S. M. SLEPTSOV, N. N. EGOROV, I. P. BYSYKATOVA, M. V. VLADIMIRTSEVA, V. V. OKONESHNIKOV
Institute of Biological Problems of Cryolitozone SB RAS, 677891, Yakutsk, Lenin ave., 41
bio@ibpc.ysn.ru
Keywords: range, breeding ground, migration, reproduction, Eastern Yakutia, China
Pages: 87-99

Abstract

The structure of Siberian Crane range and population in the regular breeding area, in the tundra of north-eastern Yakutia, as well as migration terms, intensity, routes and transit stops were studied. Territorial pairs (71.7–97.1 % of summer population) represented by birds in ages of +8 – +21, mainly 20 (45.4 %) years old in 2006, held permanently in an area of 7.3–16.5 km2, regardless of their participation in breeding. Breeding success of the population varies from 4.3–8.7 to 65.0–83.3% and depends on climatic conditions during the beginning of egg-laying. The climatic conditions are unpredictable from year to year and notable for seasonal volatility. For this reason, the population has generations that are particularly vulnerable to natural eliminating factors because of low number. Bird migration in Yakutia occurs in a narrow corridor and most intensively in the valley of the Middle Aldan. From 30 to 50 % of the total population are visually counted here at the fall time.