Orthoseira helvetica sp. nov. – a new diatom (Bacillariophyceae) from the Swiss Alps

IF 1.9 3区生物学 Q2 MARINE & FRESHWATER BIOLOGY

Diatom Research Pub Date : 2023-04-03 DOI:10.1080/0269249X.2023.2230972

Łukasz Peszek, C. Robinson, Mateusz Rybak, B. Kawecka

引用次数: 1

Abstract

This paper describes a new diatom species (Orthoseira helvetica sp. nov.) found in the Swiss Alps at an elevation over 2600 m a.s.l. The diatom was recorded at the Macun plateau, Swiss National Park, from samples of terrestrial and wet semi-terrestrial mosses near the stream splash zone. The diatom has a unique set of features and is easily recognized under light and scanning electron microscopy. The most distinctive feature is the presence of a prominent silica collar in a ‘rose flower’ shape rounding each carinoportulae and an additional silica collar on the areolae (first 3–4 rows) bordering the hyaline area. The valve diameter of O. helvetica sp. nov. is 7.5–26.5 µm and possesses 2–3 (usually 3) carinoportulae. Linking spines at the valve face/mantle junction are present, having a simple basis and being triangular in shape.

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瑞士阿尔卑斯山新硅藻Orthoseira helvetica sp.nov

本文描述了一种新的硅藻（Orthoseira helvetica sp.nov.），发现于海拔2600米以上的瑞士阿尔卑斯山 m a.s.l.在瑞士国家公园的马昆高原，从溪流飞溅区附近的陆地和潮湿的半陆地苔藓样本中记录到了硅藻。硅藻有一套独特的特征，在光学和扫描电子显微镜下很容易识别。最显著的特征是每个隆突周围都有一个突出的“玫瑰花”形状的二氧化硅项圈，在与透明质区域接壤的乳晕（前3-4排）上还有一个额外的二氧化硅项圈。helvetica sp.nov.的瓣膜直径为7.5–26.5 µm，并具有2–3个（通常为3个）隆突。瓣膜表面/地幔交界处存在连接棘，其基础简单，形状呈三角形。

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

Diatom Research 生物-海洋与淡水生物学

CiteScore

2.70

自引率

16.70%

发文量

审稿时长

>12 weeks

期刊介绍： Diatom Research is the journal of the International Society for Diatom Research. The journal is published quarterly, in March, June, September and December, and welcomes manuscripts on any aspect of diatom biology. In addition to full-length papers, short notes and reviews of recent literature are published which need not contain all the sections required for full-length papers; we see these as being necessary to record information which is of interest but which cannot be followed up in detail. Discursive “Opinion” papers are encouraged which would not necessarily follow the normal lay-out. If extremely long papers are to be offered, the author(s) should contact the editors first to discuss any problems. Book reviews, obituaries and meeting reports can be published. All papers will be subject to critical review by the editors and referees, as appropriate to their content. Papers will be accepted in English only.