Tintinnid ciliates of Amundsen Sea (Antarctica) plankton communities
Tintinnid ciliates of Amundsen Sea (Antarctica) plankton communities
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DOI：
10.3402/polar.v32i0.19784
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发表时间：
2013-01
期刊：
影响因子：
1.9
通讯作者：
J. Dolan;Eun Jin Yang;Sang Hoon Lee;Sun Young Kim
中科院分区：
文献类型：
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作者：
J. Dolan;Eun Jin Yang;Sang Hoon Lee;Sun Young Kim
阿蒙森海被描述为南极洲最具生产力和动态的中上层系统之一，也是研究最少的系统之一。本文根据阿蒙森海15个站位的样品，首次描述了微型浮游动物中纤毛虫的组成。我们比较了沿海冰间湖站点的物种组成，其中浮游植物群落以棕囊藻为主，近海深水站点，这是占主导地位的硅藻。我们一共发现了15个物种。Polynya遗址主要由少数几种tintinnids，主要是南大洋特有的。相比之下，深水区则有许多分布广泛的锡鱼种类，它们在南大洋的各种系统以及其他地区都有。我们研究了多态性已知的南极tintinnid物种Cymatocylis affinis/convallaria和Codonellopsis gaussi的特点。我们发现，发现的类型或形式似乎无关的微型浮游生物群落的类型，定义的身份占主导地位的浮游植物类群。然而，在一个网站上发现的不同形态型的数量似乎与物种的总体浓度有关，这表明以前被认为是不同物种的不同形态可能只是发育阶段。
The Amundsen Sea has been described as one of the most productive and dynamic pelagic systems in Antarctica and is one of the least studied. Based on samples from 15 stations in the Amundsen Sea, we describe for the first time the composition of the tintinnid ciliate assemblage of the microzooplankton. We compared the species compositions of coastal polynya sites, where the phytoplankton communities are dominated by Phaeocystis, to those of the offshore deep water sites, which are dominated by diatoms. We found a total of 15 species. Polynya sites were dominated by a few species of tintinnids, mostly those endemic to the Southern Ocean. In contrast, the deep-water sites contained many widespread tintinnid species, which are known from a wide variety of systems as well as other areas of the Southern Ocean. We examined polymorphism known to characterize the Antarctic tintinnid species Cymatocylis affinis/convallaria and Codonellopsis gaussi. We found that the types or forms found appeared unrelated to the type of microplankton community, defined by the identity of the dominant phytoplankton taxa. However, the number of different morphotypes found at a site appeared related to the overall concentration of the species, suggesting that different morphologies, previously considered distinct species, may simply be developmental stages.