[Abundance of Trans-Volga population of the great bustard (Otis tarda L.)].
We studied the abundance, spatial structure, and democratic parameters of the Trans-Volga population of great bustard as well as this species connection to the habitats during premigratory movements. The data were obtained by monitoring a test area of 1,200,000 hectares in 1998-2000. Time-related changes in the structure of great bustard habitats in Saratov Trans-Volga Region during the 20th century are described and the mechanisms underlying the changes in this species connection to the habitats under the influence of anthropogenic factors are proposed.
Oparin
M L
ML
Saratov Branch of Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences, ul. Rabochaya 24, Saratov, 410028 Russia.
Kondratenkov
I A
IA
Oparina
O S
OS
D000367:Age Factors; D000818:Animals; D001522:Behavior, Animal; D001717:Birds / Q000502:physiology*; D005260:Female; D008297:Male; D011157:Population Dynamics; D012426:Russia; D012744:Sex Ratio