The North American obligate cave fauna: Regional patterns
The North American obligate cave fauna: Regional patterns
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DOI：
10.1023/a:1022425908017
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发表时间：
2003-03-01
影响因子：
3.4
通讯作者：
Reddell, JR
中科院分区：
文献类型：
--
作者：
Culver, DC;Christman, MC;Reddell, JR
本文描述和比较了美国九个地区的专性洞穴动物群，包括佛罗里达石灰池、阿巴拉契亚山脉、内陆低高原、奥扎克山脉、无漂流区、爱德华兹含水层/巴尔孔陡崖、瓜达卢佩山脉、黑山和母亲矿脉。水生（stygobitic）物种的数量范围从零（黑山）到82（阿巴拉契亚山脉），陆地（troglobitic）物种的数量范围从零（佛罗里达石灰池）到256（内陆低高原）。即使在属的水平上，区域之间的重叠也很低。几个预测变量（岩溶面积，洞穴数量，长洞穴数量，深洞穴数量，距离更新世冰缘，距离晚白垩世海，植被类型-生产力的替代品）进行了评估，使用秩序统计，特别是秩序多元回归向后消除程序。对于stygobites和troglobites来说，只有洞穴的数量是一个重要的预测因素。岩溶面积效应的缺乏表明，岩溶发育程度更好地描述了洞穴的数量，而不是岩溶面积。没有证据表明到更新世冰川边界的距离很重要，但有一些证据支持到晚白垩世海缘的距离的重要性，这是水生地下殖民者的潜在来源。最后，没有迹象表明，表面生产力对物种丰富度有影响。预测变量之间的相关性使分析变得复杂。
The obligate cave faunas of nine regions of the United States - Florida Lime Sinks, Appalachians, Interior Low Plateaus, Ozarks, Driftless Area, Edwards Aquifer/Balcones Escarpment, Guadalupe Mountains, Black Hills, and Mother Lode - are described and compared. The number of aquatic (stygobitic) species ranged from zero (Black Hills) to 82 (Appalachians), and the number of terrestrial (troglobitic) species ranged from zero (Florida Lime Sinks) to 256 (Interior Low Plateau). Even at the level of genus, overlap between regions is low. Several predictor variables (karst area, number of caves, number of long caves, number of deep caves, distance from the Pleistocene ice margin, distance from the late Cretaceous Sea, and vegetation type - a surrogate for productivity) were assessed using rank order statistics, especially rank order multiple regression with a backward elimination procedure. For both stygobites and troglobites, only number of caves was a significant predictor. The absence of a karst area effect suggested that the degree of karst development is better described by the number of caves rather than area of karst. There was no evidence that distance to Pleistocene glacial boundaries was important, but there was some support for the importance of distance from late Cretaceous sea margins, a potential source of aquatic subterranean colonists. Finally, there was no indication that surface productivity had an effect on species richness. Analysis was complicated by correlations among predictor variables.