[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.
Saratov Branch of Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences, ul. Rabochaya 24, Saratov, 410028 Russia.
M L
ML
Oparin
I A
IA
Kondratenkov
O S
OS
Oparina
D000367:Age Factors; D000818:Animals; D001522:Behavior, Animal; D001717:Birds / Q000502:physiology*; D005260:Female; D008297:Male; D011157:Population Dynamics; D012426:Russia; D012744:Sex Ratio