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      Are inner cave communities more stable than entrance communities in Lapa Nova show cave?

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      Subterranean Biology

      Pensoft Publishers

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          Abstract

          Lapa Nova is a dolomitic Brazilian show cave. Invertebrate fauna registered for this cave is quite rich and abundant. During two intensive surveys in 2009, 24,482 invertebrate individuals belonging to 187 species were sampled. We found 160 species in April sampling, while in September sampling richness was considerably lower, 102 species, with a remarkable species turnover. In this paper the species richness, abundance and species diversity is presented. The Shannon`s diversity index was 2.79 and 2.87 for April and September, respectively. Although one would expect less variations to be found in the deep cave community (when compared to those located near the entrances), due to higher environmental stability, this was not observed at Lapa Nova cave. This “paradox” is probably due to the intense tourism that occurs in the cave, which imposes “instability” in all sectors, not only in nearby entrance areas. Visitation at the cave probably altered the expected natural distribution pattern, imposing a new organization of the communities, driven by the unstable conditions imposed by cave tourism.

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          Most cited references 18

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          Ecological Diversity and Its Measurement

           Anne Magurran (1988)
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            Cave Biology

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              Cave lithology determining the structure of the invertebrate communities in the Brazilian Atlantic Rain Forest

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                Author and article information

                Journal
                Subterranean Biology
                SB
                Pensoft Publishers
                1314-2615
                1768-1448
                November 04 2016
                November 04 2016
                : 20
                : 15-37
                Article
                10.3897/subtbiol.20.9334
                © 2016

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