History and current state of the flora research in the «Striltsivskyi Steppe» (Luhansk Nature Reserve)
DOI:
https://doi.org/10.32999/ksu1990-553X/2023-19-4-4Keywords:
biodiversity, flora inventory, floristic complexes, alien species, Luhansk Region, Ukraine.Abstract
Question: What is the current state of research on the flora of the Striltsivskyi Steppe (Luhansk Nature Reserve)? Methods: literature sources and electronic resources analysis. Nomenclature: IPNI 2023, Mosyakin & Fedoronchuk 1999. Locality: Luhansk Nature Reserve, Luhansk Region, Ukraine. Results: Floristic researches in the region of the Striltsivskyi Steppe (branch of the Luhansk Nature Reserve) were launched at the end of the 19th century. After the reserve establishment in 1948, the first flora inventory was conducted in 1952‒1954 and then the complete inventory was performed in the 1970’s and early 1980’s. Considerable additions to the reserve's flora were published in the early 2000’s. In 2004, the reserve area was doubled and data of the floristic survey of new territories were published in 2008‒2009. Systematization of flora data and conducting a new general inventory are urgent task, because over a long period of time the reserve`s territory and its ecological conditions have undergone a significant transformation. Changes in the land use system and establishment of a conservation regime resulted in wide distribution of shrubs and mesic grasslands and appearance of wetland areas. And instead, the areas of steppes reduced. The article presents an overview of the history of floristic research, a systematized list of additions to the reserve flora published in the 2000’s, and data of recent floristic findings. A list of 144 species added to the reserve’s flora during 2000‒2018 is provided. Currently, the flora of Stryltsivskyi Steppe includes 700 vascular plant species. Twelve arboreal species present only in artificial forest plantations are listed separately. Species of mesic and wet grasslands, wetland floristic complexes as well as shrub and forest complexes prevail among the new records. Together with ruderal species, they comprise 81,3% of new findings. The number of arboreal species increased significantly in the reserve’s flora (from 28 to 54); an increase of tree species number was the most pronounced (from 3 to 15 species). There are 39 newly recorded alien species, which in total account now for 107 species, or 15.2% of the reserve flora. Of these, 14 alien tree species expanded into natural communities from the artificial forest plantations. Conclusion: the floristic research in the Striltsivskyi Steppe is to compile a new actual species list that will correspond to the current development stage of the reserve ecosystems.
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