Phytocenotic characteristics of Psathyrostachys caespitosa-Krascheninnikovia сеratoides communities in Yakutia


N.S. Danilova1, S.Z. Borisova2,*, A.A. Egorova1
DOI 10.31242/2618-9712-2022-27-2-282-293

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1Institute for Biological Problems of Cryolithozone SB RAS, Yakutsk, Russia
2Ammosov North-East Federal University, Yakutsk, Russia
*[email protected]

Submitted 24.01.2022
Revised 15.03.2022
Accepted 30.03.2022

For citation
Danilova N.S., Borisova S.Z., Egorova A.A. Phytocenotic characteristics of Psathyrostachys caespitosaKrascheninnikovia сеratoides communities in Yakutia // Arctic and Subarctic Natural Resources. 2022, Vol. 27, No. 2. P. 282–293. (In Russ.) https://doi.org/10.31242/2618-9712-2022-27-2-282-293

Abstract. In this article we describe the phytocenotic characteristics of the winterfat steppes dominated by Krascheninnikovia ceratoides and Psathyrostachys caespitosa in Central and Southwestern Yakutia. The winterfat steppes under study are located in the well-warmed southern treeless steep slopes (45–50°) on the valley side of the Lena River. The communities are characterized by low diversity and include 28 species (26 genera and 15 families). Moreover, they have sparse distribution pattern. Woody and rooted herbaceous plants, representing a significant part of the life forms, are determined by an arid environment. In these conditions the leading position belongs to xerophytes. All the studied communities are located outside the borders of Specially Protected Natural Sites. Over the past decades, the habitat area of the winterfat (Krascheninnikovia ceratoides) has significantly decreased. These unique relic steppes are valid for the status of protected botanical monuments of nature. Particularly as the rare species protected in the republic (Hedysarum gmelinii, Phlojodicarpus sibiricus, Sibbaldianthe adpressa, Astragalus lenensis, Ephedra monosperma) grow together with Krascheninnikovia ceratoides in winterfat communities.

Keywords: winterfat steppes, Krascheninnikovia ceratoides, phytocenotic, species diversity, Yakutia

Acknowledgements. The research was carried out within the State Assignment of the Ministry of Science and Higher Education of the Russian Federation (project number 0297-2021-0023; registration number АААА-А21-121012190038-0).


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