New ecological notes on the freshwater chrysophycean alga Hydrurus foetidus (Chrysophyceae, Heterokontophyta): a study from Serbia (Southeast Europe)

(Chrysophyceae, Ochrophyta) is a freshwater benthic alga that appears as a mucilaginous, filamentous thallus. It is geographically widespread but restricted to cold waters, with optimal temperatures for growth between 2°C and 12°C. The lethal temperature for this alga is 16°C. This paper reports the...

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Bibliographic Details
Published in:Oceanological and hydrobiological studies 2024-12, Vol.53 (4), p.375-385
Main Authors: Rakonjac, Aleksandra B., Simić, Snežana B.
Format: Article
Language:English
Subjects:
Algae
Aquatic ecosystems
Benthos
Chrysophyceae
Climate change
distribution
ecology
Freshwater
Freshwater ecosystems
Hydrurus
Hydrurus foetidus
Inland water environment
temperature
Thallus
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Summary:(Chrysophyceae, Ochrophyta) is a freshwater benthic alga that appears as a mucilaginous, filamentous thallus. It is geographically widespread but restricted to cold waters, with optimal temperatures for growth between 2°C and 12°C. The lethal temperature for this alga is 16°C. This paper reports the second occurrence of in waters with temperatures much above the recorded lethal temperature. In addition, we describe the non-obligate association for the first time, with being a substrate for growth. This non-obligate association may be a strategy for the species’ survival during the summer season or the species’ response to climate change. Furthermore, we present co-occurring macroalgae, with special emphasis on the first finding of the rare freshwater chrysophycean alga in Serbian aquatic ecosystems.
ISSN:1730-413X
1897-3191
DOI:10.26881/oahs-2024.4.05