Results 11 to 20 of about 5,400,886 (261)

Resource potential and structure of black alder stands of Ukrainian Polissia

open access: yesНаукові праці Лісівничої академії наук України, 2023
Sustainable and rational use of forest resources in the context of the transition of the forest industry of Ukraine to European standards and market principles of management requires the systematic development of appropriate regulatory and information ...
Petro Lakyda, Vitaly Smolin
doaj   +1 more source

The ageing of population in Kanjiza municipality [PDF]

open access: yesGlasnik Srpskog Geografskog Društva, 2009
The aging of population in Vojvodina Province is one of the main political, national and economical issues. This paper presents the demographic situation in municipality of Kanjiza, researching the age structure.
Arsenović Daniela   +2 more
doaj   +1 more source

Assessment of age and intersexual size differences in Bufo bufo [PDF]

open access: yesArchives of Biological Sciences, 2005
Numerous studies have underlined the complex nature of relationship between age, size, and reproductive traits in anurans. One of the most intriguing problems for evolutionary biologists is intersexual difference in body size (SSD).
Cvetković Dragana D.   +3 more
doaj   +1 more source

Intraday Variation Mapping of Population Age Structure via Urban-Functional-Region-Based Scaling

open access: yesRemote Sensing, 2021
The spatial distribution of the population is uneven for various reasons, such as urban-rural differences and geographical conditions differences.
Yuncong Zhao   +5 more
doaj   +1 more source

Some relational structures with polynomial growth and their associated algebras II: Finite generation [PDF]

open access: yes, 2018
The profile of a relational structure $R$ is the function $\varphi_R$ which counts for every integer $n$ the number, possibly infinite, $\varphi_R(n)$ of substructures of $R$ induced on the $n$-element subsets, isomorphic substructures being identified ...
Pouzet, Maurice, Thiéry, Nicolas M.
core   +4 more sources

Development and prediction of the selected population movement indicators in the Czech Republic

open access: yesAgricultural Economics (AGRICECON), 2005
The paper is aimed at the presentation of findings obtained in the study of the developmental trends of the population reproduction indicators in the territory of the Czech Republic in the reference period 1993-2003.
M. Palát, E. Maca
doaj   +1 more source

Comparison of natural regeneration and radial growth variations of trees in the utilized and unutilized beech stands, Case study: Asalem forest [PDF]

open access: yesمجله جنگل ایران, 2019
This study was carried out in the oriental beech communities in order to investigate the natural regeneration and assessment of radial growth trend from 1960 to 2016.
Sepide Sadat Ebrahimi   +2 more
doaj  

Estimating ages of white‐tailed deer: Age and sex patterns of error using tooth wear‐and‐replacement and consistency of cementum annuli

open access: yesWildlife Society Bulletin, 2014
The age structure of harvested animals provides the basis for many demographic analyses. Ages of harvested white‐tailed deer (Odocoileus virginianus) and other ungulates often are estimated by evaluating replacement and wear patterns of teeth, which is ...
Daniel J. Storm   +5 more
doaj   +1 more source

The structure of Scots pine and Black locust forests in the Northern Steppe of Ukraine

open access: yesJournal of Forest Science, 2016
The article describes the distribution of areas of Scots pine (Pinus sylvestris Linnaeus) and Black locust (Robinia pseudoacacia Linnaeus) stands within the Northern Steppe of Ukraine based on forest biometry data.
V. Lovinska, S. Sytnyk
doaj   +1 more source

Determinants of demographic aging in the Republic of Serbia [PDF]

open access: yesZbornik Radova Filozofskog Fakulteta u Prištini, 2023
The aging of the population represents one of the dominant characteristics of the demographic development of Serbia in the second half of the 20th century.
Milosavljević Saša A.   +1 more
doaj  

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