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首页> 外文学位 >The effects of environmental variaiton on species diversity at two sampling scales in the bryophyte communities in the rich fens of the Fall Creek watershed.
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The effects of environmental variaiton on species diversity at two sampling scales in the bryophyte communities in the rich fens of the Fall Creek watershed.

机译：在福尔克里克流域富饶的苔藓植物群落中，在两个采样尺度上，环境变化对物种多样性的影响。

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摘要

Two sampling scales, 5.0 m2 and 1.0 m2, were used to describe the species composition of bryophyte communities and associated environmental variables in nine calcareous fens in the Fall Creek watershed. There were very few differences in bryophyte diversity among eight of the nine fens at either scale. However, larger fens tended to be more species rich. Relationships between environmental heterogeneity, species composition, and bryophyte richness were best modeled at the 5.0 m 2 sampling scale. Diversity in vegetation type and substrate diversity best explained similarities in species composition among the nine fens. Diversity in vegetation type and microtopographic diversity best predicted bryophyte richness in Fall Creek watershed rich fens. However, niche breadth analysis suggested that the ten most prominent species did not respond to microtopographic diversity or diversity in vegetation type by partitioning habitat space to form classic equilibrium communities along these environmental gradients.
机译：在Fall Creek流域的9个钙质中，使用5.0 m2和1.0 m2这两个采样比例来描述苔藓植物群落的物种组成和相关的环境变量。在这两种规模的九种eight中，八种的苔藓植物多样性差异很小。但是，较大的倾向于更多的物种丰富。环境异质性，物种组成和苔藓植物丰富度之间的关系最好在5.0 m 2的采样规模下建模。植被类型和底物多样性的多样性最能解释九种之间物种组成的相似性。植被类型的多样性和微观地形的多样性最能预测秋天溪流域富shed的苔藓植物丰富度。但是，利基宽度分析表明，十个最突出的物种没有通过沿着这些环境梯度划分栖息地空间以形成经典的平衡群落来对微地形多样性或植被类型的多样性做出反应。

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  • 作者

    Gillrich, Jennifer J.;

  • 作者单位

    State University of New York College of Environmental Science and Forestry.;

  • 授予单位 State University of New York College of Environmental Science and Forestry.;
  • 学科 Biology Ecology.;Biology Conservation.
  • 学位 M.S.
  • 年度 2012
  • 页码 132 p.
  • 总页数 132
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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