DISTRIBUTION AND PHYTOCENOTIC RESIDENCE OF RHAPONTICOIDES RAZDORSKYI (ASTERACEAE) IN THE FOOTHILLS OF DAGESTAN
R.A. Murtazaliev1,2, A.Yu. Korolyuk3, S.A. Senator4, E.G. Zibzeev3
1Dagestan State University, Makhachkala, Russia
2Precaspian Institute of Biological Resources DFRC RAS, Makhachkala, Russia
3Central Siberian Botanical Garden, SB RAS, Novosibirsk, Russia
4Tsitsin Main Botanical Garden of the RAS, Moscow, Russia
Keywords: Asteraceae, Rhaponticoides, endemic, populations, communities, area, IUCN rarity criteria, Republic of Dagestan, Eastern Caucasus
Abstract
The article presents information on the current state of populations and abundance of the endemic species of the Eastern Caucasus flora Rhaponticoides razdorskyi (Karjagin ex Sosn.) M.V. Agab. et Greuter (Asteraceae). The altitudinal limits of the species distribution are from 200 to 600 m above sea level. The area of populations known in Russia ranges from 0.2 ha to 300.0 ha, the number of individuals per 100 m2 is from 43 to 225. It was found that Rh. razdorskyi prefers slopes of southern and adjacent exposures with sparse vegetation on rocky soils. The main type of vegetation in which the species is found are mountain steppe communities with a predominance of cereals. According to the IUCN criteria, the conservation status of the species is defined as EN B2ab(iii).
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