<abstract xmlns="http://www.w3.org/1999/xhtml"><p>The features of the ontogenetic structure of cenopopulations of a rare species Hedysarum gmelinii Ledeb. (Fabaceae) were studied on the periphery of its range (the Middle Volga region and the Bashkir Cis-Urals) and in its central part (the Altai Mountains region). Types of cenopopulations were determined according to the “delta-omega” criterion: in the Bashkir Urals, they were mostly young, in the Middle Volga region, they were mature, in the Altai Mountains, they were maturing. The proportion of pregenerative individuals in populations increases in habitats with high moisture levels. Anthropogenic load (mainly in the form of grazing) had a greater effect on the number and density of individuals, rather than on the type of ontogenetic spectrum of cenopopulations.</p></abstract>

The features of the ontogenetic structure of cenopopulations of a rare species Hedysarum gmelinii Ledeb. (Fabaceae) were studied on the periphery of its range (the Middle Volga region and the Bashkir Cis-Urals) and in its central part (the Altai Mountains region). Types of cenopopulations were determined according to the “delta-omega” criterion: in the Bashkir Urals, they were mostly young, in the Middle Volga region, they were mature, in the Altai Mountains, they were maturing. The proportion of pregenerative individuals in populations increases in habitats with high moisture levels. Anthropogenic load (mainly in the form of grazing) had a greater effect on the number and density of individuals, rather than on the type of ontogenetic spectrum of cenopopulations.

Features of the Demographic Structure and the Condition of Populations of the Rare Relic <italic>Hedysarum Gmelinii</italic> Ledeb. (Fabaceae) in Peripheral and Central Parts of Its Distribution Range

Samara State University of Social Sciences and Education

Proceedings of the Latvian Academy of Sciences. Section B. Natural, Exact, and Applied Sciences.

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Features of the Demographic Structure and the Condition of Populations of the Rare Relic  Ledeb. (Fabaceae) in Peripheral and Central Parts of Its Distribution Range

The features of the ontogenetic structure of cenopopulations of a rare species Hedysarum gmelinii Ledeb. (Fabaceae) were studied on the periphery of its range...

Features of the Demographic Structure and the Condition of Populations of the Rare Relic Hedysarum Gmelinii Ledeb. (Fabaceae) in Peripheral and Central Parts of Its Distribution Range

Published Online: Jan 05, 2021

Page range: 385 - 395

Received: Jan 22, 2020

Accepted: Oct 09, 2020

DOI: https://doi.org/10.2478/prolas-2020-0051

Keywords
Hedysarum gmelinii Ledeb., cenopopulation, ontogenetic spectrum, demographic indicators, habitat

© 2020 Larisa M. Abramova et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Features of the Demographic Structure and the Condition of Populations of the Rare Relic Hedysarum Gmelinii Ledeb. (Fabaceae) in Peripheral and Central Parts of Its Distribution Range

Published Online: Jan 05, 2021

Page range: 385 - 395

Received: Jan 22, 2020

Accepted: Oct 09, 2020

DOI: https://doi.org/10.2478/prolas-2020-0051

KeywordsHedysarum gmelinii Ledeb., cenopopulation, ontogenetic spectrum, demographic indicators, habitat

© 2020 Larisa M. Abramova et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Keywords
Hedysarum gmelinii Ledeb., cenopopulation, ontogenetic spectrum, demographic indicators, habitat