北欧Eemian古湖泊的硅藻组合及罕见的Aulacoseira sp.休眠孢子的形态学观察

IF 1.9 3区生物学 Q2 MARINE & FRESHWATER BIOLOGY

Diatom Research Pub Date : 2021-10-02 DOI:10.1080/0269249X.2021.2001381

Anna Plikk, J. Risberg, K. Helmens

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引用次数: 0

摘要

本文概述了芬兰东北部Sokli最后一个间冰期(Eemian)湖相gyttja沉积物的硅藻区系，并描述了与Aulacoseira islandica-skvortzowii群相似的休眠孢子的显微照片，这些孢子在欧洲最近的材料中没有发现。并与相似分类群的文献资料进行了比较。休眠孢子的形态(例如，10µm内的条纹和乳晕的数量)将它们与A. islandica-skvortzowii类群联系起来，但在Sokli记录中缺乏营养细胞使得确定真正的同义词变得困难。Sokli Eemian古湖泊中存在与a . islandica-skvortzowii类群相似或相关的孢子，可能反映了该类群在过去更为广泛的分布。

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Diatom assemblages from an Eemian palaeolake in Northern Europe with morphological observations of rare Aulacoseira sp. resting spores

An overview of the diatom flora of the last interglacial (Eemian) lacustrine gyttja deposit at Sokli, northeastern Finland is presented together with descriptions including photomicrographs of resting spores similar to the Aulacoseira islandica-skvortzowii group, not found in recent material from Europe. Comparisons are made with literature data on similar taxa. The morphology of the resting spores (e.g., the number of striae and areolae in 10 µm) links them to the A. islandica-skvortzowii group, but the lack of vegetative cells in the Sokli record makes the determination of true synonymy difficult. The presence of spores similar/related to the A. islandica-skvortzowii group in the Sokli Eemian palaeolake may reflect a more widespread distribution of this group in the past.

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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.