Benthic diatom diversity in a turbid brackish lagoon of the Baltic Sea

IF 1.5 4区 生物学 Q3 MARINE & FRESHWATER BIOLOGY
K. Kuriyama, S. Heesch, U. Karsten, R. Schumann
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Abstract

ABSTRACT The Darß-Zingst Bodden Chain is a tide-less shallow lagoon at the Southern Baltic coast. It was and is studied in almost all hydrological, biogeochemical as well as floristic and faunistic aspects. Benthic diatoms were studied using light and scanning electron microscopy (SEM) in the early 1970s and one sampling site was now revisited. A total of 103 diatom taxa were recorded in sediment and on macrophyte samples collected between 2015 and 2019. In the sediment samples, epipsammic diatoms accounted for almost 90% of the total valve counts. In the 1970s, only three epipsammic species were observed, while we recorded a total of 27 epipsammic taxa, most of which were very small (<12 µm). Since those earlier studies, many of these species have been newly described or transferred from other genera. Moreover, small diatoms may have been misidentified, overlooked or counted as important. This study emphasizes, in addition, the need to combine light microscopy with electron microscopy to allow the unambiguous identification also of small entities, and to reach a comprehensive overview over the diatom flora present in different benthic habitats.
波罗的海浑浊半咸淡泻湖的底栖硅藻多样性
摘要Darß-Zingst-Bodden链是位于波罗的海南部海岸的一个无潮浅水泻湖。它过去和现在几乎在所有的水文、生物地球化学以及植物区系和动物区系方面都进行了研究。20世纪70年代初,人们使用光学和扫描电子显微镜(SEM)对底栖硅藻进行了研究,现在重新访问了一个采样点。在2015年至2019年间收集的沉积物和大型植物样本中,共记录了103个硅藻分类群。在沉积物样品中,表层硅藻几乎占瓣膜总数的90%。在20世纪70年代,只观察到三个表生物种,而我们总共记录了27个表生分类群,其中大多数都很小(<12µm)。自从这些早期的研究以来,这些物种中的许多都是新描述的或从其他属转移过来的。此外,小型硅藻可能被误认、忽视或被认为是重要的。此外,这项研究强调,需要将光学显微镜与电子显微镜相结合,以明确识别小型实体,并全面了解不同海底栖息地的硅藻群落。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Phycologia
Phycologia 生物-海洋与淡水生物学
CiteScore
3.10
自引率
18.80%
发文量
54
审稿时长
3 months
期刊介绍: Phycologia is published bimonthly by the International Phycological Society and serves as a publishing medium for information about any aspect of phycology. Membership in the Society is not necessary for publication. Submitted manuscripts cannot be previously published or submitted elsewhere. Copyright ownership of all accepted papers is held by the International Phycological Society.
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