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- Title
Caucasian Black Grouse ( Tetrao mlokosiewiczi) breeding display sites selection in Arasbaran Region, East Azerbaijan, Iran.
- Authors
Habibzadeh, N.; Karami, M.; Tarinejad, A.
- Abstract
Micro-habitat characteristics of breeding display Sites (Leks) of Caucasian Black Grouse ( Tetrao mlokosiewiczi) were studied in the mountains of Arasbaran Region, East Azerbaijan, from October 2006 to June 2008. We quantified micro-habitat characteristics around active and inactive Caucasian black grouse lek sites and random points in the 3 areas (Biosphere reserve, Kalan protected area (one of core zones of Arasbaran biosphere reserve) and unprotected areas)). Our objective was to compare micro-habitat characteristics among these sites. We also developed a logistic regression model to identify micro-habitat factors have important effect in the active lek sites. In the micro-habitat scale, we measured both biotic factors (canopy cover (%), height (cm) and frequency of vegetations) and abiotic (physical) factors (slope (%), altitude (m), aspect and etc.). Slope and altitude were different significantly between sampling sites ( p = 0.05). Mean of slope in the active leks (= 57.9%) and inactive leks (= 52.0%) were higher than random sites (= 40.1%). The mean aspect differed between active leks ( $$ \bar X $$ = 284°, S.D = 54.1°) and random sites ( $$ \bar X $$ = 33°, S.D = 76.18°) (Watson's U-test, U = 0.717). Also, variance analysis (ANOVA) revealed that grasses and forbs cover, frequency of deciduous shrubs and forbs, canopy cover and frequency of deciduous woody plants > 12 cm diameter at breast height were different significantly between sampling sites. The best model for discriminating between active lek and random sites included rock-pavement cover (parameter estimate [ B] = 0.286, SE = 0.219), canopy cover of grasses (parameter estimate [ B] = 0.880, SE = 0.453), distance to the nearest tree (parameter estimate [ B] = −0.047, SE = 0.027).
- Subjects
AZERBAIJAN (Iran); IRAN; HABITATS; TETRAO mlokosiewiczi; LOGISTIC regression analysis; BIOSPHERE reserves
- Publication
Russian Journal of Ecology, 2010, Vol 41, Issue 5, p450
- ISSN
1067-4136
- Publication type
Article
- DOI
10.1134/S1067413610050152