Diatoms (Bacillariophyta) associated with lichens from Ulu Peninsula (James Ross Island, NE Antarctic Peninsula)

IF 0.5 Q4 ECOLOGY

Czech Polar Reports Pub Date : 2018-07-01 DOI:10.5817/cpr2018-2-12

Hutňan Chattová, Barbora

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引用次数: 5

Abstract

Since 2000, the entire Antarctic diatom flora is being revised using a more fine-grained taxonomy based on a better analysis and interpretation of the morphological and molecular observations. Despite the increased diatom research and efforts, the diversity and ecology of diatoms of lichen inhabiting flora of James Ross Island weren’t studied yet. To reveal the actual diatom diversity, samples were collected during February and March 2018 from lichens on the Ulu Peninsula, James Ross Island, a 2,450 km2 large island, situated in the north-western part of the Weddell Sea, close to the northern tip of the Antarctic Peninsula. The analysis of 29 lichen samples revealed the presence of 56 diatom taxa belonging to 17 genera. The most abundant species were Luticola muticopsis, Hantzschia amphioxys f. muelleri, Pinnularia borealisvar.scalaris, Luticola aff. pusilla and Achnanthes muelleri. Biogeographically, the lichen-inhabiting diatom flora of the Ulu Peninsula is composed of cosmopolitan, Antarctic and endemic elements. The present study is the first focusing on the diversity of lichen-inhabiting diatom communities on James Ross Island, revealing the presence of a rather species rich diatom flora.

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南极半岛东北部乌鲁半岛(詹姆斯罗斯岛)与地衣相关的硅藻(硅藻门)

自2000年以来，在对形态和分子观测进行更好的分析和解释的基础上，使用更细粒度的分类学对整个南极硅藻区系进行了修订。尽管对硅藻的研究和努力不断增加，但詹姆斯·罗斯岛地衣区系硅藻的多样性和生态学尚未得到研究。为了揭示实际的硅藻多样性，2018年2月和3月从詹姆斯·罗斯岛乌鲁半岛的地衣中采集了样本。詹姆斯·罗斯岛是一个2450平方公里的大岛，位于威德尔海西北部，靠近南极半岛北端。对29个地衣样本的分析显示，共有17属56个硅藻分类群。最丰富的物种是多柄木犀（Luticola muticopsis）、两尖木犀属（Hantzschia amphoxys f.muelleri）、北方松（Pinnularia borealisvar.scalaris）、木犀。pusilla和Achanthes muelleri。从生物学角度来看，居住在乌鲁半岛的地衣硅藻群落由世界性、南极性和特有性元素组成。本研究首次关注詹姆斯·罗斯岛上栖息在硅藻群落中的地衣的多样性，揭示了一个物种丰富的硅藻群落的存在。

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

Czech Polar Reports Agricultural and Biological Sciences-Agricultural and Biological Sciences (all)

CiteScore

1.30

自引率

10.00%

发文量

期刊介绍： Czech Polar Reports is an international, multidisciplinary, peer-reviewed journal. It is issued 2 times a year. The journal is dedicated to provide original research papers for sciences related to the polar regions and other planets with polar analogues. Czech Polar Reports covers the disciplines listed below. polar paleontology, geology, geochemistry, geomorphology, glaciology, climatology, hydrology, pedology, biochemistry, ecology, environmental science, microbiology, plant and animal biology including marine biology.