Prodromus of vegetation of Yakutia

Gogoleva, P. A.; Cherosov, Mikhail; Миронова, С. И.; Burtseva, E. I.; Sleptsova, N. P.; Pestryakov, B. N.; Kharlampyeva, Praskovia; Gavrilyeva, L. D.; Poiseeva, S.I.; Ermakov, Nikolai; Telyatnikov, M. Yu.; Lashchinsky, Nikolaj; Troeva, Elena; Николин, Е. Г.; Filippova, Viktoriya

doi:10.1051/bioconf/20191600009

Cited by 1 publication

(1 citation statement)

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“…In Yakutia, it is found in semidesert and actual steppes on the steep left bank slopes of the Lena River. According to the ecological and floristic classification of Braun-Blanquet, the communities of the species are assigned to the class Cleistogenetea squarrosae, the order Stipetalia krylovii, the union Psathyrostachion caespitosa with one association (agrium) Psathyrostachetum caespitosa (Gogoleva 1999).…”

Section: Methodsmentioning

confidence: 99%

Populations of Agrostis diluta Kurcz. and Psathyrostachys caespitosa (Sukaczev) Peschkova in Yakutia: dynamics of vitality

Kardashevskaya¹,

Егорова²

2021

ABS

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In Yakutia, natural floodplain meadows and steppes have long been involved in economic activities. To develop methods of rational use, one needs to constantly consider the state of vegetation, mainly its constituent populations. Our research focuses on studying the dynamics of the vitality of the populations of the Agrostis diluta Kurcz. and steppe Psathyrostachys caespitosa (Sukaczev) Peschkova cereals. These species play an essential role in the composition of vegetation cover. We determined the vitality coefficient IVC. Our study of populations over several years has revealed the dynamic mobility of the vital structure, which is of adaptive significance and ensures the sustainability of populations. We have found that the vital structure of the cereal populations of the meadow Agrostis diluta and the steppe Psathyrostachys caespitosa during long-term studies (2007–2013 and 2007–2016, respectively) is heterogeneous. In unfavorable humidification conditions, we characterize years as depressive. Under favorable conditions of humidification, they quickly turn into thriving plants. In addition to the weather of the vegetation periods, habitat specificity affects the vitality of species populations that differ in ecological and coenotic characteristics. The Q quality index and IVC correspond to each other by year and form a clear descending order during the transition from a thriving to a depressive state. Currently, the vital state of the populations of both species is satisfactory.

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Section: Methodsmentioning

confidence: 99%