Abstract Although well represented in the fossil diatom flora throughout Europe and Asia, from the early-middle Miocene to the Quaternary, Stauroneis balatonis is considered a very rare diatom with a contemporary distribution limited to two ancient lakes – Ohrid and Prespa. The objective of this study was to describe the first finding of S. balatonis in Serbia in Lake Savsko and to update information on the distribution and ecology of this rare species. Periphyton samples were collected from artificial substrates incubated at three depths (0.5 m, 0.8 m and 1.4 m) in Lake Savsko and the epilithic community was sampled in the littoral zone. Samples were collected weekly in summer 2014, from mid-July to mid-September. Diatom permanent slides were prepared and small numbers of S. balatonis specimens were observed only in samples collected in September from artificial substrates incubated at the greatest depth (1.4 m). Our results significantly contribute to the information on the contemporary distribution and the ecology of this rare diatom taxon, especially considering the fact that S. balatonis specimens were observed in our study in diatom communities developed on artificial substrates and in an urban reservoir, i.e. Lake Savsko.

中文翻译：

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在塞尔维亚萨沃斯科湖记录的稀有硅藻 Stauroneis balatonis Pantocsek

摘要 尽管从早中新世到第四纪的整个欧洲和亚洲的化石硅藻群中都有很好的代表，但 Stauroneis balatonis 被认为是一种非常稀有的硅藻，其当代分布仅限于两个古老的湖泊——奥赫里德和普雷斯帕。本研究的目的是描述塞尔维亚 Savsko 湖中 S. balatonis 的首次发现，并更新有关这种稀有物种的分布和生态的信息。从在 Savsko 湖中三个深度（0.5 m、0.8 m 和 1.4 m）孵化的人工基质中收集附生生物样品，并在沿海地区对附生生物群落进行采样。2014 年夏季从 7 月中旬到 9 月中旬每周收集样品。制备硅藻永久载玻片和少量 S. balatonis 标本仅在 9 月份从在最大深度 (1.4 m) 孵化的人工基质中收集的样本中观察到。我们的研究结果对有关这种稀有硅藻类群的当代分布和生态学的信息做出了重大贡献，特别是考虑到在我们的研究中观察到 S. balatonis 标本的事实是在人造基质和城市水库（即萨夫斯科湖）上开发的硅藻群落中.