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首页> 外文期刊>Polar biology >Spatial and temporal variations in moss-inhabiting summer diatom communities from Potter Peninsula (King George Island, Antarctica)
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Spatial and temporal variations in moss-inhabiting summer diatom communities from Potter Peninsula (King George Island, Antarctica)

机译：波特半岛（南极国王乔治岛）生苔藓的夏季硅藻群落的时空变化

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摘要

This work represents the first analysis of the spatial and temporal variations in the diversity and community structure of diatoms associated with mosses, either dry or wet, sampled during the summer season from the littoral zone of three ponds in Potter Peninsula (King George Island, South Shetland Islands). It also seeks to explore the effect moisture content in the mosses can have on the structure of the diatom assemblages. The ponds approximately had the same number of species, and differences were found between the dry and wet sampling points. The same 4 species were predominant in the three ponds (Nitzschia alpina, N. perminuta, Staurosira oldenburgiana, and Pinnularia subantarctica var. elongata), but not in the same proportions. The first three species differed from those which were found to be dominant in other basins covered by mosses in southern South America and in the sub-Antarctic region. The latter, P. subantarctica var. elongata, had only been found to be abundant in a moss sample from another South Shetland Island. The diatom assemblages were found to be more strongly related to habitat traits (e.g. distance to thernsea, ponds' areas, and the vegetation's moisture levels) than to the physical-chemical variables measured in the water.
机译：这项工作代表了对夏季与夏季三个月从波特半岛三个池塘沿岸地区采样的与苔藓相关的硅藻（干或湿）的多样性和群落结构的时空变化的初步分析。设得兰群岛）。它还试图探索苔藓中的水分含量对硅藻组合物结构的影响。池塘的物种数大致相同，干，湿采样点之间存在差异。在这三个池塘（Nitzschia alpina，N。perminuta，Staurosira oldenburgiana和Pinnularia subantarctica var。elongata）中，这4个物种占主导地位，但比例不同。前三个物种与那些在南美南部和南极亚地区被青苔覆盖的其他盆地中占主导地位的物种不同。后者，P.subantarctica var。只是从另一个南设得兰群岛的苔藓样本中发现了elongata。发现硅藻集合与栖息地特征（例如到大海的距离，池塘区域和植被的水分含量）更紧密地相关，而不是与水中测量的物理化学变量有关。

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  • 来源
    《Polar biology》 |2010年第4期|443-455|共13页
  • 作者

    Alicia Vinocur; N. I. Maidana;

  • 作者单位

    Departamento de Biodiversidad y Biologia Experimental, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pab. II, C1428EHA, Buenos Aires, Argentina Departamento de Ecologia Genetica y Evolucion, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pab. II, C1428EHA, Buenos Aires, Argentina;

    Departamento de Biodiversidad y Biologia Experimental, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pab. II, C1428EHA, Buenos Aires, Argentina CONICET, Buenos Aires, Argentina;

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  • 正文语种 eng
  • 中图分类
  • 关键词

    diatoms; mosses; limnology; potter peninsula; Maritime Antarctica;

    机译：硅藻苔藓;语言学波特半岛海上南极洲;

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