Worldwide, caves and groundwater habitats harbor thousands of species modified and limited to subterranean habitats in karst. Data are concentrated in Europe and USA, where a number of detailed analyses have been performed. Much less is known with respect to global patterns due to a lack of data. This special issue will focus on and discuss the global patterns of individual hotspot caves and groundwater habitats.

中文翻译：

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地下生物多样性热点

在全球范围内， 洞穴和地下水生境包含成千上万种经过修饰的物种，并仅限于岩溶地下生境。数据集中在欧洲和美国，在那里进行了许多详细的分析。由于缺乏数据，人们对全局模式知之甚少。本期专刊将集中讨论各个热点洞穴和地下水生境的全球格局。