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The new location Hemerocallis Minor Mill. in the territory of Yakutia

O.A. NikolaevaE.A. Afanasieva*
DOI 10.31242/2618-9712-2021-26-1-12

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Institute for Biological Problems of Cryolithozone SB RAS, Yakutsk, Russia
*[email protected]

Received 20.11.2020
Accepted 27.01.2021

Citation
Nikolaeva O.A., Afanasieva E.A. The new location Hemerocallis Minor Mill. in the territory of Yakutia // Arctic and Subarctic Natural Resources. 2021. Vol. 26, No. 1. pp. 130–135. (In Russ.) https://doi.org/ 10.31242/2618-9712-2021-26-1-12

Abstract. Hemerocallis minor – is included in the Red Book of the Republic of Sakha (Yakutia), in category 2b, a species whose numbers are decreasing as a result of excessive human use. In 2019, in the vicinity of the village Zhemkon of the Khangalassky ulus of the Sakha Republic (Yakutia) on a floodplain cereal-forb meadow, next to the roadway, a new location of a species rare for Yakutia was discovered. The study was carried out according to the generally accepted research method for plant cenopopulations, on 20 sites with a size of 1 m2. The studied coenopopulation of H. minor is small, occupying about 20 m2. The total number of the population is 103 individuals, the density of growth of the species is 5.1 ind./m2. The cenopopulation is young, normal, incomplete, the age spectrum is left-sided with a maximum for virginal individuals. Self-maintenance of cenopopulation is only seed. The anthropogenic factor is the limiting aspect of the number and self-maintenance of the cenopopulation. This coenopopulation of H. minor is endangered and needs special protection measures. The creation of an introduction population can serve as a reserve fund for the restoration of the H. minor cenopopulation in the Central Yakutia.

Key words: Hemerocallis, rare species, Red Book, floristic finds, coenopopulation, phytocenotic de- scriptions, Central Yakutia.

Acknowledgements. The research was carried out within the state assignment of Ministry of Science and Higher Education of the Russian Federation (theme No. 0297-2021-0023, reg. No. АААА-А21-121012190038-0). The authors are grateful to the deputy director for research with schoolchildren MBOU Oyskoy SOSH for Nogovitsin B.R. for organizing the expedition.


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