Features of Soil Nematode Communities in Different Zones of the Phytogeneous Area of a Tree.

Autor: Kalinkina, D. S., Sushchuk, A. A., Genikova, N. V.
Zdroj: Biology Bulletin Reviews; Jun2023, Vol. 13 Issue 3, p275-285, 11p
Abstrakt: The first data on the characteristics of soil nematode communities in the inner zones of the phytogeneous area (near-tree and under-tree zones) of the Siberian larch (Larix sibirica Ledeb). and Norway spruce (Picea abies (L.) H. Karst.) and in the external zone between trees are presented. Taxonomic diversity, the abundance of nematodes, and the eco-trophic structure of communities are investigated using generally accepted nematological methods. The results showed that the total abundance and the absolute and relative density of plant parasites and nematodes, associated with plants in the phytogeneous area of the larch are higher than those in spruce. The change of the dominant group in the eco-trophic structure of nematode communities (from bacterial feeders to fungal feeders) from the trunk to the periphery is shown for the larch, but this trend is not detected for the spruce: the groups mentioned above also have an equally high percentage in both zones. The total nematode abundance and relative density of omnivores increased in near-tree zones of both trees relative to under-tree zones and the external zone between trees. Thus, the results indirectly suggest the presence of microclimatic differences between the phytogeneous areas of larch and spruce. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
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