Relationship between the developmental rate and individual vitality in populations of rare plant species in the high-mountains of the Ukrainian Carpathians
| Autor: | V. Kyyak, V. Shtupun |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
0106 biological sciences
education.field_of_study biology Ecology ved/biology Rare species Population ved/biology.organism_classification_rank.species food and beverages Ranunculus biology.organism_classification Vitality 010603 evolutionary biology 01 natural sciences Shrub Ecosystem engineer Phyteuma Gentiana acaulis education 010606 plant biology & botany |
| Zdroj: | Visnyk of Lviv University. Biological series. :3-15 |
| ISSN: | 2075-5236 0206-5657 |
| DOI: | 10.30970/vlubs.2021.84.01 |
| Popis: | The article presents an overview of long-term research and numerous publications on the relationship between developmental rate and individual vitality in populations of rare and endemic plant species in the high-mountain zone of the Ukrainian Carpathians: a case study on Ranunculus thora, Primula halleri, Leontopodium alpinum, Gentiana acaulis, Doronicum clusii, Saussurea alpina, Oreochloa disticha, Pulsatilla alba, Rhododendron myrtifolium, Senecio сarpathicus, Festuca carpatica, Heracleum carpaticum, Phyteuma vagneri etc. Stationary in-situ research was conducted at the study sites founded 5–30 years ago. The greatest impact on the individual and population vitality is caused by the position changes in coenosis of the species of different life forms and strategies. Increasing of the shrub positions accelerates the decreasing of vitality of low shrubs and grasses especially, and vice versa, increasing of the coenotic position of high-growing shrubs and grasses causes the vitality decrease of short-growing heliophytes, including most of the rare species. The individual vitality and population viability determines some influence on the dynamics of their seasonal development. The individual development is faster at higher vitality level. It results in the relatively earlier beginning of phenophases. In the coenoses where the value of population as ecosystem engineer is higher, the accelerated dynamics of pre-flowering phases and longer flowering period is observed. The individual vitality and relative age of vegetatively active species increase significantly under the developmental conditions without vegetative reproduction. The vitality of vegetative diaspores significantly change due to the effect of autonomous development of shoots and ramets in comparison to the original vitality of maternal individuals. The effect of inertia of individual and population vitality consists in the gradual change of their vitality under the changeable conditions of their existence. Only drastic adverse exogenous effects can cause a sudden decrease of their vitality. Processes of the transition of low vitality individuals to the high rank are the slowest ones. |
| Databáze: | OpenAIRE |
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