Seasonal Dynamics of the Structure of Soil Nematode Communities in Chestnut Soils Affected by Grazing Pressure in the Manych River Valley

Two key sites representing virgin and pasture biotopes were studied. Their soil parameters were identified, brief descriptions of the vegetation were given, and the spectral–reflective characteristics of the vegetation cover (normalized difference vegetation index, NDVI) were calculated based on Lan...

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Bibliographic Details
Published in:Arid ecosystems 2021, Vol.11 (1), p.91-101
Main Authors: Shmatko, V. Yu, Sushko, K. S., Sokolova, T. A., Iljina, L. P.
Format: Article
Language:English
Subjects:
Abundance
Biomedical and Life Sciences
Biotopes
Chestnut
Dynamics
Ecology
Fauna
Grazing
Identification
Imagery
Landsat
Landsat satellites
Life Sciences
Nematodes
Normalized difference vegetative index
Parameter identification
Pasture
Plant cover
Remote sensing
River valleys
Satellite imagery
Seasonal variations
Seasons
Soil
Soil dynamics
Soil structure
Soils
Spaceborne remote sensing
Species diversity
Systematic Study of Arid Territories
Vegetation
Vegetation cover
Vegetation index
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Summary:Two key sites representing virgin and pasture biotopes were studied. Their soil parameters were identified, brief descriptions of the vegetation were given, and the spectral–reflective characteristics of the vegetation cover (normalized difference vegetation index, NDVI) were calculated based on Landsat 8 OLI satellite imagery. The seasonal dynamics of the structure of soil nematode communities in chestnut solonetzic soils affected by grazing pressure was examined. A number of characteristic features manifested in the species diversity of the nematode fauna, changes in their total abundance, and the predominance of certain trophic groups and genera have been identified. In total, 133 taxa were registered on the key sites; 58 species have been identified. It is established that the specific features of the soil nematode communities in various seasons of the year are manifested by the predominance of certain trophic groups and genera, as well as their total abundance on the key sites. Overall, the nematode fauna is quite diverse: the Shannon index varies throughout the year within the same range of values. The Bongers maturity index (MI) for the nematode fauna indicates that their habitat conditions are stable.
ISSN:2079-0961
2079-0988
DOI:10.1134/S2079096121010121