Monitoring of Rare Vascular Plant Populations in Cheremskyi Nature Reserve (Volyn Region, Ukraine)
DOI:
https://doi.org/10.29038/2617-4723-2018-381-40-48Keywords:
rare vascular plants, morphological parameters, population, monitoring, sozological management, Cheremskyi Natural ReserveAbstract
The results of the inventory of the populations status of rare vascular plants with different levels of protection (international, national and regional) in the wetland area of Cheremskyi Nature Reserve have been established. Among them two species (Dactylorhiza incarnata (L.) Soó and Hammarbya paludosa (L.) O. Kuntzeand) are listed for Addition ІІ CITES. Six species (Carex chordorrhiza Ehrh., D. incarnata, H. paludosa, Salix lapponum L., Scheuchzeria palustris L., Utricularia intermedia Hayne) are protected according to the Red Data Book of Ukraine (2009). Two species (Carex limosa L. and Drosera rotundifolia L.) are regionally rare for the Volyn region. The populations of model plant species have been assessed by structural and functional parameters, which it is advisable to choose as the criteria for determination of their condition in the process of conducting monitoring research. The population of D. rotundifolia covers almost the entire bog, the projective cover of the species is up to 5 %. The population of C. limosa is thriving and does not need any additional conservation measures. A high adaptive potential of C. chordorrhiza was noted, which allows the species to spread quite effectively to different parts of the bog massif, which differ by the degree of trophicity. In the investigated territory S. palustris is noted by a rather high-frequency of occurrence, its projective cover in some places reaches 10 %. In the mesotrophic areas of the Cheremske bog, in hollows, U. intermedia forms small population loci, the area of which for the most part does not exceed 0,25 cm2. On an area of about 50 m2, only young individuals of S. lapponum were found, spreading diffusely at a distance of 2−3 m from each other. The H. paludosa population locus occupies a small area of 16 m2 in the community of a meso-oligotrophic plant complex with a predominance of small sedges and a dense sphagnum cover. The generative individuals of the species have a medium and low level of vitality. D. incarnata in the territory of the bog is rather sporadic – the population area reaches 5000 m2 with a sparsely-diffuse spatial location. The obtained results are summarized and practical recommendations are developed regarding the application of the proposed methodologies for the study of selected criteria for the status of the rare species populations during their monitoring on the territory of the Cheremskyi Nature Reserve, which is the basis of the science-based criteria for the sozological management.
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