LOCATIONS OF PLANT SPECIES INCLUDED IN THE RED DATA BOOK OF THE REPUBLIC OF MORDOVIA, AND REGISTERED IN THE MORDOVIA STATE NATURE RESERVE (RUSSIA) IN 2019
The important tasks in biodiversity conservation are the inventory of biota and its components, investigations of population dynamics of plants and animals. In Russia, the formation and maintenance of Red Data Books is the widely accepted approach for conservation of vulnerable and endangered species. Apart of the main species list, each regional Red Data Book includes a species list, populations of which need to be monitored in the Russian region. Nevertheless, these species are being investigated much rarer in compare to the species included in the main list of a Red Data Book. Present paper presents results of inventory for plant species included in both main and additional lists of the Red Data Book of the Republic Mordovia. Our research has been conducted in the Mordovia State Nature Reserve (Russia) in 2019. We found new locations of 35 plant species, including locations of plants included in the main (12 taxa) and additional (23 taxa) lists of the Red Data Book of the Republic of Mordovia. New locations of species included in the main list (Buxbaumia aphylla, Andromeda polifolia, Carex chordorrhiza, C. disperma, C. limosa, C. magellanica subsp. irrigua, Goodyera repens, Juniperus communis, Linnaea borealis, Moneses uniflora, Pulsatilla patens, Scheuchzeria palustris) are considered as supplement to information of the Red Data Book of the Republic of Mordovia published in 2017. In addition, we recommended four species (Daphne mezereum, Chimaphila umbellata, Circaea lutetiana, Platanthera bifolia) to be included in the additional list of the regional Red Data Book. We recommended to exclude Convallaria majalis from the additional species list of the Red Data Book due to the lack of its extinction threat in the Republic of Mordovia. Additionally, we discussed issues concerning the maintenance of additional species list of a regional Red Data Book, issues of populations' re-discovery of populations for plant species included in both main and additional lists of the Red Data Book of the Republic of Mordovia.