Phototrophs in Unique Habitats of Thermomineral Springs in Central Serbia
Thermomineral springs are unique aquatic habitats characterized by high temperatures or mineral-rich water and often host specialized microbial communities. In Serbia, these springs represent an important but under-researched ecological resource whose diverse physicochemical properties are shaped by...
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| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2025-01-01
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| Series: | Life |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2075-1729/15/2/169 |
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| Summary: | Thermomineral springs are unique aquatic habitats characterized by high temperatures or mineral-rich water and often host specialized microbial communities. In Serbia, these springs represent an important but under-researched ecological resource whose diverse physicochemical properties are shaped by their geological context. In this study, the physical and chemical properties of Serbian thermomineral springs and their relationship with phototrophic communities in different substrates are investigated. Phototrophic biofilms were categorized into fully submerged and splash zone biofilms, with the former showing higher primary production. Cyanobacteria, Chlorophyta, and Bacillariophyta were recorded, with Bacillariophyta being the predominant division in terms of diversity, followed by Cyanobacteria. Among Cyanobacteria, coccoid forms like <i>Aphanocapsa</i>, <i>Chroococcus</i>, <i>Gloeocapsa</i> and <i>Synechococcus</i> dominated splash zones, while trichal forms such as <i>Leptolyngbya</i>, <i>Oscillatoria</i> and <i>Pseudanabaena</i> were abundant in submerged biofilms, forming thick mats. Unique cyanobacterial taxa, including <i>Desertifilum</i>, <i>Elainella</i>, <i>Geitlerinema</i>, <i>Nodosilinea</i> and <i>Wilmottia</i>, were identified through molecular analysis, underscoring the springs’ potential as habitats for specialized phototrophs. Diatom communities, dominated by <i>Nitzschia</i> and <i>Navicula</i>, exhibited site-specific species influenced by microenvironmental parameters. Statistical analysis revealed ammonia, total nitrogen, and organic carbon as key factors shaping community composition. This study enhances the understanding of these ecosystems, emphasizing their conservation importance and potential for biotechnological applications. |
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| ISSN: | 2075-1729 |