Diversity of soil nematodes in meadows of the White Carpathians

Abstract

Soil nematodes were studied in 11 meadow sites in the White Carpathians. In total, 155 species and 86 genera were found but the composition of nematode assemblages in eastern and western side of the mountains differed. Most nematode species belonged to the orders Tylenchida (52), Dorylaimida (35) and Rhabditida (16), and to the trophic groups bacterivores (47), plant parasites (29) and omnivores (25). In individual sites and sampling dates the number of species varied in range 18 -68, genera 18 -52, H'spp 1.32 -3.50, H'gen 1.31 -3.21, T 1.79 -5.70, MI 2.32 -3.63, PPI 2.03 -2.98, and ΣMI 2.20 -3.50. Composition of nematode assemblages and their matrix classification indicated a low degree of anthropogenous disturbance to the meadows.

Soil nematodes in alpine meadows of the Tatra National Park (Slovak Republic)

“…At meadow sites of elevations lower than 2000 m a. s. l. the dominance of A. agricola decreases (Popovici, 1998). This is also in the present study and in other meadows at lower elevations in Slovakia (Šály & Žuffa, 1980;Šály, 1983, 1985Lišková & Čerevková, 2005;Čerevková, 2006;Háněl & Čerevková, 2006) where plant parasites with cp-values 3 become dominant.…”

Species and genera of soil nematodes in forest ecosystems of the Vihorlat Protected Landscape Area, Slovakia

“…Alphei, 1998;Büttner, 1989;Popovici, 1989) very likely due to favourable climate and rich plant community. Nematode species and genera were significantly positively correlated as in our study on meadow ecosystems (Háněl & Čerevková, 2006) and in tree plantations on colliery spoils (Háněl, 2009). Therefore, genus richness is a sufficient estimator of overall nematode richness although species can better distinguish different types of ecosystems (Figs.…”

Composition and vertical distribution of free living and plant parasitic nematodes in hop gardens in the Czech Republic

“…Therefore, further monitoring of the occurrence of virus-vector nematodes is required in the future. Lower values of MI, ∑MI, H´gen, SI, CI and higher values of EI in our hop gardens investigated compared to those recored by Háněl and Čerevková (2006) in natural meadows or spruce forest (Čerevková & Renčo, 2009) indicate poorly-regulated, disturbed ecosystems (Ferris et al, 2001). This conclusion was also supported by the results of (O+P)/(B+F+RFF+PP), which also indicate a poor health ecosystem (Wasilewska, 1997).…”

“…These results correspond to a general pattern of nematode communities in agroecosystems in temperate areas. Generally, the nematode communities in agricultural soils of Central Europe are less diverse compare to those in more stable ecosystems like forests (Háněl & Čerevková, 2010) or meadows (Háněl & Čerevková, 2006), but always with a greater proportion of bacterivores and plant parasites (Háněl, 2010). The prevalence of bacterivores in hop gardens studied may be caused by regular fertilization with manure per each 2 -3 years and with industrial fertilizers each year.…”

“…A marked effect of region upon nematode faunas in agroecosystems shown in cluster analysis has been confirmed by Háněl (2003). The nematode faunas in grasslands on the western and eastern slopes of White Carpathians exhibited clearly detectable differences (Háněl & Čerevková, 2006), too. Because of a great variety of geomorphological units in the Czech Republic, and in a broader sense in the Central Europe, the effect of region upon composition of local nematode faunas (including plant parasites occurrence in agroecosystems) should be taken into consideration when evaluating their disturbance by human activities.…”