scholarly journals SPATIAL AND AGE STRUCTURE OF SILVER BIRCH AND CURLY BIRCH POPULATIONS

2021 ◽  
pp. 22
Author(s):  
Лидия Васильевна Ветчинникова ◽  
Александр Федорович Титов ◽  
Lidia Vetchinnikova ◽  
Alexander Titov
Keyword(s):  
Age Structure ◽  
Silver Birch

scholarly journals Age structure of the birch stands in the Left-Bank Forest-Steppe of Ukraine

2019 ◽  
pp. 124-131
Author(s):  
V. L. MESHKOVA ◽  
Ya. V. KOSHELYAEVA
Keyword(s):  
Age Structure ◽  
Silver Birch ◽  
Forest Composition ◽  
Forest Steppe ◽  
Forest Site ◽  
Left Bank ◽  
Site Conditions ◽  
Age Classes ◽  
Lower Productivity ◽  
The Mean

The aim of this work was to define the features of the age structure of the silver birch stands in the Left-Bank Forest-Steppe considering forest site conditions, origin, site index and proportion of this species in the forest composition. Survival of silver birch in almost all age classes was the lowest in the relatively poor forest site conditions. The mean weighted age classes of silver birch are IV.8 in vegetative stands and IV.6 – in artificial seed stands. For all origins, the mean weighted age classes are V.1 for Sumy Region and IV.6 – for Kharkiv and Poltava Regions. The stands of the lower productivity have the least longevity. Survival of pure and almost pure stands (silver birch make 90 % of all the trees) is the lowest. At that, it is the highest in Sumy Region.

Age structure, survivorship and life expectancy for future in Murree forests

2020 ◽  
Vol 53 (3) ◽  
Author(s):  
Afsheen Khan ◽  
S. Shahid Shaukat ◽  
Moinuddin Ahmed
Keyword(s):  
Life Expectancy ◽  
Age Structure

Age Structure and Some Growth Parameters in a Population of Bombina bombina (L., 1761) from Turkey

2018 ◽  
Vol 25 (3) ◽  
pp. 221 ◽  
Author(s):  
Ufuk Bülbül ◽  
Ali İhsan Eroğlu ◽  
Muammer Kurnaz ◽  
Zeynep Mutanoğlu Kaya ◽  
Halime Koç ◽  
...  
Keyword(s):  
Age Structure ◽  
Growth Parameters ◽  
Bombina Bombina

Life History Traits in a Population of Pelobates syriacus (Boettger, 1889) from Turkey

2020 ◽  
Vol 27 (4) ◽  
pp. 195-200
Author(s):  
Ufuk Bülbül ◽  
Halime Koç ◽  
Yasemin Odabaş ◽  
Ali İhsan Eroğlu ◽  
Muammer Kurnaz ◽  
...  
Keyword(s):  
Life History ◽  
Age Structure ◽  
Life History Traits ◽  
Spadefoot Toad ◽  
Males And Females

Age structure of the eastern spadefoot toad, Pelobates syriacus from the Kızılırmak Delta (Turkey) were assessed using phalangeal skeletochronology. Snout-vent length (SVL) ranged from 42.05 to 86.63 mm in males and 34.03 to 53.27 mm in females. Age of adults ranged from 2 to 8 years in males and 3 to 5 years in females. For both sexes, SVL was significantly correlated with age. Males and females of the toads reached maturity at 2 years of age.

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