Nematode communities of forest ecosystems in association with various soil orders

作者：Liskova Marta^*; Cerevkova Andrea; Hanel Ladislav

来源：Russian Journal of Nematology, 2008, 16(2): 129-142.

• nematode communities
• forest soil
• Cambisol
• Fluvisol
• Regosol
• Rendzina
• Slovakia

Soil nematodes were investigated at six sites in each of four different forest soil orders in Slovakia: Cambisol, Fluvisol, Regosol and Rendzina. The nematode fauna showed high diversity of genera (H'gen) and maturity (MI, PPI, SI) and those parameters were independent of soil order. The nematode communities were characterised by a high proportion of plant parasites (mainly Trichodorus, Helicotylenchus, Paratrophurus, and Longidorus) except for the Cambisol. The greatest proportions of bacterial feeders (Acrobeloides and Alaimus) were in Regosol and Rendzina. Fungal feeders (Tylencholaimus, Diphtherophora, Aphelenchoides) together with root fungal feeders (Aglenchus) were abundant in Cambisol with higher acidity and root-fungal feeders (Malenchus) in Fluvisol with a preponderance of anaerobic conditions. All soil orders were characterised by a high proportion of K-strategic omnivores (Eudorylaimus) and predators (Mylonchulus and Clarkus). The trophic structure of nematode communities suggested great activity of a fungal-based energy channel in Cambisol. Increasing activity of a bacterial-based energy channel was indicated through Fluvisol and Rendzina to Regosol. Cluster analysis and Principal component analysis showed that generic structure of nematode communities was strongly affected by soil orders, which were characterised by specific fauna. Nematode communities in the Rendzina sites showed greater variation than in other soil orders.

• 出版日期2008