Structure and dynamics of communities of ciliated protozoa (Ciliophora) in field communities. Succession, genus-species relationships, nutrition
1997
Tirjakova, E. (Comenius Univ., Bratislava (Slovak Republic). Dept. of Zoology)
Based on analysis of 147 samples of agricultural soil, the succession, genus-species relationships and representation of trophic guilds of Ciliophora were investigated. The succession of Ciliophora was studied under laboratory conditions for 13 days following watering. The period of a relatively higher incidence of species occurred mostly on day 5. The abundance showed irregular variations. The values of the C/P index decreased regularly from the first to the thirteenth day. The values of the species/genera index were higher in agricultural soil than in natural habitats, which can be explained by an instability of these communities and probably also by effects of crops. Based on the species composition of the Ciliophora and their food, trophic guilds were established. The percentage of bacterivorous species in agrocoenoses was not higher than in natural soil and water biotopes
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