Shmatko V.Yu.,  Sushko K.S.,  Sokolova T.A., Ilyina L.P. SEASONAL DYNAMICS OF THE STRUCTURE OF THE COMMUNITIES OF SOIL NEMATODES IN CHESTNUT SOILS OF THE MANYCH VALLEY UNDER PASTURE LOAD // Arid ecosystems. 2021. V. 27. № 1 (86). P. 106-118. | PDF

In this article, two key areas with virgin and pasture biotopes were studied, for which soil parameters were determined, a brief description of the vegetation was given, and the spectral reflectance properties of the vegetation cover (NDVI) were calculated using Landsat 8 OLI images.

The seasonal dynamics of the structure of soil nematode communities in chestnut solonetzic soils under pasture load has been studied. A number of features have been identified that are manifested in the species diversity of the fauna, changes in the total number, domination of certain trophic groups and genera.

For the studied areas, 133 taxa were identified, exact species identification is given for 58 species. It has been established that the features of soil nematode communities in different seasons of the year are manifested in the dominance of certain trophic groups and genera, as well as their total number at key sites.

In general, the fauna of nematodes can be assessed as quite diverse – Shannon’s index (Hˊ) throughout the year at all sites varied within the same values. The nematode community maturity index by Bongers (MI) indicates the stability of their habitat conditions.

Keywords: soil nematodes, chestnut solonetzic soils, pasture load, vegetation, ecological and trophic composition, diversity index, community maturity index.

DOI: 10.24411/1993-3916-2021-10142