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首页> 外文期刊>Journal of nannoplankton research: A publication of the International Nannoplankton Association >Modern subtropical/tropical coastal coccolithophorid assemblages
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Modern subtropical/tropical coastal coccolithophorid assemblages

机译：现代亚热带/热带沿海Coccolithophorid组装

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摘要

In order to determine diagnostic coccolithophorid assemblages for shallow waters, lagoonal and/or coastal water samples were collected and examined around various subtropical (Shikoku, Okinawa, Ogasawara Islands, and Guam) and tropical (Puerto Rico and Palau) islands. The species diversity at each location was then compared in order to identify regional differences and cosmopolitan species. Generally, the water samples were filtered and observed with a scanning electron microscope, but some live material was also examined with a light microscope. All localities contained Emiliania huxleyi var. huxleyi (=morphotype A) and Gephyrocapsa oceanica, while Umbellosphaera spp., Umbilicosphaera hulburtiana, and Helicosphaera carteri were often present. Cruciplacolithus neohelis (which lives on the sand surface in shallow waters), Reticulofenestra maceria, and Gephyrocapsa ericsonii (often linked with upwelling) have now been found at a number of localities. Holococcolithophorids occurred in just two sets of samples (off Guam and Palau), suggesting that seasonal differences (e.g., dry vs. wet seasons) may control their distribution. This highlights the need for taking samples at different times of the year. Surprisingly, middle and lower photic zone species (Algirosphaera robusta, Calciopappus rigidus, Calciosolenia spp., Reticulofenestra sessilis, and Syracosphaera anthos) have occasionally appeared in our shallow coastal waters, a phenomenon now being reported elsewhere by other workers.
机译：为了确定浅水诊断Coccolithophorid组件，收集泻湖和/或沿海水样，并在各种亚热带（Shikoku，冲绳，ogasawara岛和关岛）和热带（Puerto Rico和Palau）群岛上进行检查。然后比较每个位置的物种多样性，以识别区域差异和过多的物种。通常，用扫描电子显微镜过滤并观察水样，但也用光学显微镜检查一些活物。所有地区都包含Emiliania Huxleyi Var。 Huxleyi（= Morphotype A）和Gephyrocapsa Oceanica，而umbellosphaera spp，umbilicosphaera hulburtiana和Helicosphaera carteri通常存在。 Cruciplacolithus Neohelis（在浅水区的沙子表面上居住），reticulofenestra maceria和Gephyrocapsa Ericsonii（通常与升值相关）已经发现了许多地方。 Holococcolithophorids发生在仅两套样品（OFF Puam和Palau）中，表明季节性差异（例如，干燥与湿季节）可以控制其分布。这突出了在一年中不同时间采取样品的需要。令人惊讶的是，中低光区种（藻类毒素，钙匹皮斯刚性，Calcosolenia SPP）偶尔出现在我们浅水沿海水域中，目前在其他工人别的地方报道了现象。

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    Richard W. Jordan; Atsuko Kijima; Chika Komuro; Hideto Tsutsui; Kenta Abe; Susumu Konno;

  • 作者单位

    Department of Earth &

    Environmental Sciences Faculty of Science Yamagata University 1-4-12 Kojirakawa-machi Yamagata 990-8560 Japan;

    Department of Earth &

    Environmental Sciences Faculty of Science Yamagata University 1-4-12 Kojirakawa-machi Yamagata 990-8560 Japan;

    Department of Earth &

    Environmental Sciences Faculty of Science Yamagata University 1-4-12 Kojirakawa-machi Yamagata 990-8560 Japan;

    Department of Earth &

    Environmental Sciences Faculty of Science Yamagata University 1-4-12 Kojirakawa-machi Yamagata 990-8560 Japan;

    Graduate School of Science &

    Engineering Yamagata University 1-4-12 Kojirakawa-machi Yamagata 990-8560 Japan;

    Department of Earth &

    Planetary Sciences Graduate School of Sciences Kyushu University 6-10-1 Higashi-ku Hakozaki Fukuoka 812-8581 Japan;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 水生生物学;
  • 关键词

    species; microscope; sand;

    机译：物种;显微镜;沙子;

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