UDC 631.467.2
Shmatko V.Yu., Ilyina L.P., Sokolova T.A. STRUCTURE OF THE SOIL NEMATODES COMMUNITY OF THE DRY STEPPE PHYTOCENOSES ON THE VODNY ISLE IN THE ROSTOVSKY NATURE RESERVE IN SPRING // Arid Ecosystems. 2023. Vol. 29. № 3 (96). P. 100-110. | PDF
We present the results of the study of the community structure of the soil nematodes in the key areas on the Vodny Isle of the Rostovsky Nature Reserve in the spring period. A total of 76 genera from 41 families and 9 orders were identified, and 39 genera were common for two months (April-May). It is shown that a number of features of the fauna of soil nematodes in spring are manifested in the generic diversity, occurrence and dominance of individual ecological-trophic groups and genera.
The total number of species at key sites varies from 17 to 33. At the same time, the number of nematodes in April ranged from 230 to 994 ind. per 100 cm3 of soil, and from 134 to 1043 ind. per 100 cm3 in May. It was revealed that the most diverse generic composition was in Dorylaimida, which included 29 genera, in Tylenchida with 19 genera, and in Rhabditida with 11 genera.
It was discovered that in spring, when the indicator of the crude aboveground plant phytomass increases, the number of nematodes from the group that feeds on plants increases as well, which was confirmed by the correlation analysis (the correlation coefficient has very high values: rapril = 0.86, rmay = 0.96 at a p-level < 0.05).
Keywords: soil nematodes, phytocenoses of the dry steppe, geobotanical indicators, ecological trophic groups, correlation analysis.
Financing. The work was prepared for the State Research Center of the Russian Academy of Sciences, project No. 122020100332-8 “The Role of Natural and Anthropogenic Factors in the Formation and Dynamics of Lowland Biogeocenoses”.
DOI: 10.24412/1993-3916-2023-3-100-110
EDN: KHSIDW