期刊
AQUATIC ECOLOGY
卷 51, 期 1, 页码 75-90出版社
SPRINGER
DOI: 10.1007/s10452-016-9599-7
关键词
Frasassi cave system; Italy; Groundwater; Biodiversity; Chemoautotrophy
资金
- European Community [LIFE12 BIO/IT/000231 AQUALIFE]
The Frasassi cave system in central Italy hosts one of the few known examples of a groundwater metazoan community that is supported by sulfur-based lithoautotrophic microbes. Despite the challenging conditions represented by high concentrations of H2S and low concentrations of O-2, this cave system is home to many invertebrate species. Here, we analyzed the copepods inhabiting sulfidic lakes and non-sulfidic dripping pools in order to investigate how environmental conditions in sulfidic waters regulate the spatial distribution of the cave microcrustacean community over time. We also sampled copepod assemblages of sulfidic lakes under conditions of both high and low H2S concentration. Cluster analysis and canonical correspondence analysis separated the copepod assemblages inhabiting dripping pools from those of sulfidic lakes. H2S concentration, pH and O-2 concentration were identified as the main factors regulating community structure. These results indicate that the distribution of groundwater copepods within the cave system is ecologically and spatially structured. Sulfidic lakes showed lower Simpson dominance, higher Shannon diversity and higher Pielou equitability at higher H2S concentrations. The complex community structure of the copepods of the Frasassi cave system suggests that a chemosynthetically produced food source facilitated the colonization of stygobionts in sulfidic groundwater due to their tolerance to the environmental conditions.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据