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Distribution of trophic groups of soil nematodes (Nematoda) and soil food web condition in inverse gorges in the České Švýcarsko National Park (Czech Republic)
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SYSNO ASEP 0429188 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Ostatní články Title Distribution of trophic groups of soil nematodes (Nematoda) and soil food web condition in inverse gorges in the České Švýcarsko National Park (Czech Republic) Author(s) Háněl, Ladislav (BC-A) RID Source Title Acta Societatis Zoologicae Bohemicae - ISSN 1211-376X
Roč. 77, č. 2 (2013), s. 87-101Number of pages 15 s. Language eng - English Country CZ - Czech Republic Keywords soil zoology ; ecology ; Nematoda ; trophic group ; Bohemian Switzerland National Park Subject RIV EH - Ecology, Behaviour Institutional support BC-A - RVO:60077344 CEZ AV0Z60660521 - UPB-H, BC-A (2005-2011) Annotation Trophic groups of soil nematodes were studied in three gorges (Hauschengrund HG, Brtnický potok BP and Kachní potok KP) in the České Švýcarsko National Park. Soil samples were collected from the bottom, the middle and the uppermost parts (zones) of the sides of the gorges in June and October 2008, 2009 and 2010. Gorges themselves had no significant effect on the total nematode abundance and trophic groups except for plant parasites (low abundance in KP) and omnivores (greater abundance in BP). Sampling date significantly affected the abundance of all trophic groups. Root-fungal feeders fungivores were most abundant on the slopes, predators and insect parasites mostly occurred at the bottoms of the gorges. Cluster analysis indicates that the zonation has a marked effect on the trophic structure of nematode assemblages, although there were many overlaps between-zones associated with seasonal fluctuations in fungivores and root-fungal feeders. Bacterivores, fungivores, root-fungal feeders and omnivores were significantly negatively, and plant parasites and predators significantly positively correlated with soil bulk density. The decrease in soil bulk density generally corresponded with the accumulation of soil organic matter and decrease in soil pH in the upper parts of the gorges. Ratios between nematode trophic groups indicate greater participation of bacteria than fungi in the detritus food web and greater rate of nutrient mineralization via the grazing food web at the bottoms than on the slopes of the gorges. Greater trophic diversity of nematode assemblages at the bottoms of the gorges coincident with greater species and generic richness. Workplace Biology Centre (since 2006) Contact Dana Hypšová, eje@eje.cz, Tel.: 387 775 214 Year of Publishing 2015
Number of the records: 1