Diversity of green algae in Kamanos raised bog (NW Lithuania) with the aspect of long-term changes in desmids

J. Koreivienė, J. Kasperovičienė
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引用次数: 1

Abstract

Abstract In Kamanos raised bog, the green algae community was represented by 160 taxa distributed into eight Chlorophyceae orders. The diversity of desmids (93 taxa) that are an essential algal component of raised bogs was most relevant. Chlorococcales comprised 30 taxa and Ulotrichales – 15 taxa. Representatives from the rest green algae groups were scarce. Higher variety of habitats in Lake Kamanos and the pools supported more diverse flora of green algae (151 taxa) compared to black hollows (61 taxa). Actinotaenium cucurbita was the single species found in all studied water bodies of Kamanos raised bog. Characium ornitocephalum, Asterococcus superbus, Cosmarium amoenum, Micrasterias truncata, Spondylosium pulchellum, Netrium digitus were found in the lake and all pools, whereas Cosmoastrum scabrum, Tetmemorus laevis – in all hollows. In the current study, the composition of desmid taxa recorded in Kamanos raised bog in two research periods was compared. The first reports on desmids were published by Vilkaitis (1937, 1940). He found 129 Desmidiales (18 genera) and 10 Zygnematales species (4 genera). Fifty five species identified by V. Vilkaitis were found repeatedly during the current investigation. In 2005, 42 species were newly recoded in Kamanos raised bog, and of these, 17 taxa were new to desmid flora of Lithuania. A numerous rare species recorded by Vilkaitis (1937) were not observed repeatedly probably due to long-term changes that had occurred in the peat bog and not enough comprehensive study that represented only part of Kamanos wetland. Some new rare desmid species (e.g. Micrasterias jenneri, Cosmarium cymatonotophorum, Desmidium cylindricum, Actinotaenium cucurbitinum, Xanthidium bifidum) have recently been found at Kamanos sites.
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立陶宛西北部卡马诺斯沼地绿藻多样性与地势长期变化的关系
卡马诺斯沼地绿藻群落有160个类群,分为8个绿目。作为沼地藻类重要组成部分的desmids(93个分类群)的多样性是最相关的。绿球藻包括30个分类群和15个分类群。其他绿藻组织的代表寥寥无几。卡马诺斯湖和湖泊生境的多样性较高,绿藻植物群(151个分类群)比黑洞(61个分类群)更多样化。葫芦丝放线菌是卡马诺斯养殖沼泽水体中唯一的菌种。湖泊和所有水池中均有鸟头虫、超级星球菌、金合花、长形小角虫、pulchellum spondyloum、digitus等,而湖泊和所有洼地中均有金合花、Tetmemorus laevis等。在本研究中,比较了两个研究时期卡玛诺斯凸起沼泽中记录的desmid分类群的组成。维尔凯提斯(Vilkaitis, 1937年,1940年)发表了关于desmids的第一批报告。他发现了129种Desmidiales(18属)和10种Zygnematales(4属)。在本次调查中,重复发现了55种经Vilkaitis鉴定的物种。2005年在卡马诺斯沼地新发现42个物种,其中17个分类群为立陶宛低地植物区系新发现。Vilkaitis(1937)记录的许多珍稀物种没有被反复观察到,可能是由于泥炭沼泽发生了长期的变化,也可能是研究不够全面,只代表了Kamanos湿地的一部分。最近在卡马诺斯遗址上发现了一些新的稀有物种(如:jenneri Micrasterias, cymatonotophorum,圆柱状的Desmidium, Actinotaenium cucurbitinum, Xanthidium bifidum)。
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First record of Physarum spectabile (Myxomycetes) in Russia Alien fungi in Lithuania: list of species, current status and trophic structure Supplemented checklist of lichens and allied fungi of Lithuania Contribution to the knowledge of lichen-forming and lichenicolous fungi of Gomel region (Belarus) Diversity of green algae in Kamanos raised bog (NW Lithuania) with the aspect of long-term changes in desmids
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