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Environmental drivers of heterotrophic euglenoid diversity in Czech bogs
Jaroslav Kubín1, Michaela Wipplingerová2
1Department of Botany, Faculty of Science, University of South Bohemia in České Budějovice, Na Zlaté Stoce 1, 370 05, České Budějovice, Czech Republic. kubinj05@prf.jcu.cz.
Heterotrophic euglenoids in Czech bogs are structured by environmental factors like pH and nutrient levels. Their diversity and composition reveal ecological patterns in these unique wetland habitats.
Area of Science:
- Ecology
- Protistology
- Wetland Science
Background:
- Bogs are biodiversity hotspots for microbial eukaryotes.
- Ecological structuring of heterotrophic euglenoids in wetlands is poorly understood.
Purpose of the Study:
- Investigate associations between heterotrophic euglenoid communities and environmental gradients in Czech bogs.
- Understand the ecological role of these protists in wetland ecosystems.
Main Methods:
- Examined 419 samples from 110 mire sites using live light microscopy.
- Related species occurrences to habitat characteristics and water chemistry using multivariate analyses (CCA, DCCA) and variation partitioning.
Main Results:
- Assemblages strongly structured by pH, ammonium concentration, water column size, habitat area, and Sphagnum presence.
- Osmotrophic Aphagea dominated small, acidic, ammonium-rich habitats.
- Phagotrophic and petalomonadid taxa associated with larger, less acidic sites.
Conclusions:
- Heterotrophic euglenoids exhibit distinct ecological patterns along wetland environmental gradients.
- These protists contribute significantly to overall protist diversity in wetlands.
- Provides a morphology-based ecological synthesis for a poorly studied group.
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