Kameneva L. A., Kvitchenko A. K., Marchuk E. A.
Application of a new approach to assessing the rarity status of plants in the Khanka Lake basin
Year: 2024, Issue: LXXII, Pages: 366 - 377
Data were analyzed for 78 rare species growing in the Khanka Lake basin using the rarity index “rr” proposed by E.A. Maciel (2021) based on the work of D. Rabinowitz (1981). For the assessment, we used a synthesis of three parameters that have equal weight in the calculations: geographic range, habitat specificity, and population size. The analysis included metadata from herbarium specimen labels, information on species occurrence from the literature, and our own observations. The rarity index “rr” was calculated using the “rrindex” software package in the R software environment (R CoreTeam, 2023). The result of the calculation is a list of species with corresponding indices. For the studied species, the rarity index “rr” takes values from 0.22 to 1, and the closer to one, the rarer the species is considered. Testing of the method showed the possibility of its effective use for local areas with a large number of rare species of different distribution, abundance and ecological amplitude.
DOI: 10.25221/kl.72.8