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Diversity and Ecology of Ciliates (Alveolata: Ciliophora) Living in the Bark and Decaying Wood Mass in Slovakia

並列摘要


Biodiversity and ecology of ciliates were studied in the samples of the bark and decaying wood mass (DWM) of 23 tree species collected in Slovakia during the years 2001-2004. In total, 122 ciliate species were identified. DWM constitutes a special terrestrial habitat with its own ciliate fauna characteristic by numerous rare and many strongly and exclusively autochthonous species. Litostomes, spirotrichs and colpodids were the most prominent systematic groups. Peritrichs, suctorians, and prostomatids were under-represented in DWM as typical for terrestrial habitats worldwide. The structure of trophic guilds was very similar in DWM and soils with the prevalence of bacterivorous and predaceous species followed by omnivores and fungivores. Bacterivores, participating in decomposition processes and nutrient cycling, dominated in the far-gone decayed samples. The evaluation of C/P ratios indicates that DWM could be considered as an unstable and unpredictable habitat. Hierarchical classification showed that different clusters constitute niches with their own ciliate fauna rather affected by prevalent environmental factors (moisture, temperature, pH and food supply) than certain tree species.

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