Analysis of the current status of populations of rare plant species of nature monument Troicki chalk mountains (Orenburg region)

Karimova, O. A.; Abramova, L. M.; Golovanov, Ya. M.

doi:10.1134/s2079096117010073

Cited by 11 publications

(2 citation statements)

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“…Фундаментальные исследования организменных и популяционных параметров редких видов растений при разном режиме антропогенного воздействияважное условие их успешного сохранения в природе Karimova et al, 2017;Hou et al, 2018;Zacarнas-Correa et al, 2020). Одним из наиболее многочисленных и, вместе с тем, наиболее уязвимых в мировом масштабе является семейство Orchidaceae Juss (Вахрамеева, 2006;Перебора, 2008;.…”

Section: Introductionunclassified

Variability of Population and Individual Characters of Gymnadenia conopsea (L.) R. Br. (Orchidaceae, Liliopsida) under Anthropogenic Load Conditions in Meadow Ecosystems of Central Caucasus

Чадаева

Кярова

2021

Povolžskij èkologičeskij žurnal

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We studied the variability and phytocenotic plasticity of the morphological characters of individuals, and the numbers, density, ontogenetic structure and vitality of 11 coenopopulations of Gymnadenia conopsea (L.) R. Br. within the Kabardino-Balkar Republic in 2015–2019. The variability and plasticity of plants features provide their adaptation to various growing conditions and improve the morphological heterogeneity of coenopopulations. The dynamics of abundance, density, age structure and vitality of coenopopulations in the changing conditions of the environment provides information about life strategies of the species. Age conditions, the variability and plasticity of plants were studied on the basis of morphological parameters of the aboveground organs without digging the plants. The studies were conducted in meadow plant communities under various conditions of anthropogenic load (recreation and grazing). The species is characterized by medium-high phytocenotic plasticity of morphological characters (Ip = 38–68%) and high variability of morphological characters (CVх¯ср = 17.10– 33.63%) under changeable growth conditions. Intensification of growth processes in the individuals with the maximum increase of the coenopopulation vitality (IVC = 0.98– 1.16) was observed in the composition of undisturbed highly wet meadows; the portion of generative individuals increased in their ontogenetic spectra (48.6–56.5%). Under the anthropogenic load intensification, the vitality of coenopopulations (IVC = 0.82– 0.95) and the density of individuals decreased; the portion of virginal individuals increased in their ontogenetic spectra (rubbly meadows) or coenopopulations were clearly aging. The rate of the seed reproduction of coenopopulations, where the density of individuals accounted for 16 ind./m2 , was high on rubbly substrata with low total projective cover (60%). Our studies have identified the mixed type of life strategy for Gymnadenia conopsea with stress-tolerant and ruderal components. The ruderal-stress-tolerant life strategy allows the species to grow for a long time in conditions of high interspecific competition and anthropogenic load, spreading quickly to unoccupied territories.

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Section: Introductionunclassified

Variability of Population and Individual Characters of Gymnadenia conopsea (L.) R. Br. (Orchidaceae, Liliopsida) under Anthropogenic Load Conditions in Meadow Ecosystems of Central Caucasus

Чадаева

Кярова

2021

Povolžskij èkologičeskij žurnal

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“…A sufficient number of studies have been dedicated to the study of species biology and ecology at the organismal, population and cenotic levels of organisation (Smirnova et al, 2002;Basargin, 2007;Osmanova, 2008;Abramova et al, 2010;Osmanova, 2016;Karimova et al, 2017;2019b). In any case, the object of study is not a single plant, but a cenotic population of plants.…”

Section: Introductionmentioning

confidence: 99%

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

Abramova

Ильина

Mitroshenkova

et al. 2020

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

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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.

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Variability of Population and Ontogenetic Parameters of Gymnadenia conopsea (L.) R. Br. (Orchidaceae, Liliopsida) in Meadow Ecosystems of the Central Caucasus Affected by Anthropogenic Pressure

Чадаева

Kyarova

2021

Biol Bull Russ Acad Sci

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Analysis of the current status of populations of rare plant species of nature monument Troicki chalk mountains (Orenburg region)

Cited by 11 publications

References 1 publication

Variability of Population and Individual Characters of Gymnadenia conopsea (L.) R. Br. (Orchidaceae, Liliopsida) under Anthropogenic Load Conditions in Meadow Ecosystems of Central Caucasus

Variability of Population and Individual Characters of Gymnadenia conopsea (L.) R. Br. (Orchidaceae, Liliopsida) under Anthropogenic Load Conditions in Meadow Ecosystems of Central Caucasus

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

Variability of Population and Ontogenetic Parameters of Gymnadenia conopsea (L.) R. Br. (Orchidaceae, Liliopsida) in Meadow Ecosystems of the Central Caucasus Affected by Anthropogenic Pressure

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