Lone Star Bears: The Tardigrada of Big Thicket National Preserve, Texas
Lone Star Bears: The Tardigrada of Big Thicket National Preserve, Texas
复制标题
孤星熊：德克萨斯州大丛林国家保护区的缓步动物
DOI：
10.1656/058.013.s512
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发表时间：
2014
期刊：
影响因子：
--
通讯作者：
Amie Matte
中科院分区：
文献类型：
--
作者：
Juliana G. Hinton;H. Meyer;Nola D. McDaniel;C. Bergeron;Shailaja J. Keely;Amie Matte
摘要
我们于 2006 年开始在德克萨斯州东南部的大丛林国家保护区 (BTNP) 完成了水熊虫 (缓步动物门) 的全类群生物清查 (ATBI)。我们的清查基于大烟山国家公园 (GSMNP) 缓步动物 ATBI 中使用的方法。我们对地衣、苔藓、地钱、落叶层、土壤和水生植物进行了采样。缓步动物存在于 47% 的陆地样本和 3% 的淡水样本中。我们鉴定了 631 个缓步动物标本和 63 个卵，代表 13 属和 37 种。 BTNP 中的缓步动物物种丰富度约为 GSMNP 的一半。 BTNP 多样性较低的部分原因是缺乏 GSMNP 的海拔变化特征。 BTNP 中淡水缓步动物的数量尤其少。 BTNP 的溪流和湖泊富营养化且泥泞，可能不适合缓步动物的栖息地。这项研究证实了之前的发现，即山区发现的缓步动物的高度多样性可能并不具有其他景观的典型特征，而且在北美，南部沿海平原和平地的缓步动物数量和多样性均低于北部森林和山区。
Abstract
We completed an all taxa biological inventory (ATBI) for water bears (Phylum Tardigrada) in the Big Thicket National Preserve (BTNP) of southeastern Texas begun in 2006. Our inventory is based on methods used in a tardigrade ATBI of the Great Smoky Mountains National Park (GSMNP). We sampled lichens, mosses, liverworts, leaf litter, soil, and aquatic vegetation. Tardigrades were present in 47% of terrestrial and 3% of freshwater samples. We identified 631 tardigrade specimens and 63 eggs, representing 13 genera and 37 species. Tardigrade species richness in BTNP is approximately half that in GSMNP. Lower diversity in BTNP is partly explained by the absence of the altitudinal variation characteristic of GSMNP. Freshwater tardigrades were especially poorly represented at BTNP. Streams and lakes in BTNP are eutrophic and muddy, and may be poor habitats for tardigrades. This study confirms previous findings that the high tardigrade diversity found in mountainous areas may not be typical of other landscapes, and that in North America, tardigrades are less numerous and diverse in southern coastal plains and flatlands than in northern forests and mountains.