Journal Article
Taxonomic distinctness of the subterranean fauna from Peruaçu Caves National Park, state of Minas Gerais, eastern Brazil
Monte, B.G.O. and Bichuette, M.E.
Record Number:
4541
Year:
2020
Journal:
Biota Neotropica
Pages:
e20190810
Volume:
20(1)
Abstract:
Abstract: Limiting factors of subterranean environments, high relative air humidity and, especially, permanent
darkness, represent ecological filters for organisms and biodiversity patterns of surface and subterranean communities
display wide disparities. Subterranean diversity and singularity are, thus, better expressed when the common
presence of rare and endemic species are considered. Our study aimed to describe the diversity of the cave fauna
from 14 caves from Peruaçu Caves National Park (PCNP), eastern Brazil. We analyzed the regional diversity
using the index that includes the average taxonomic distinction (TD - Δ +, AvTD). We recorded 1,674 individuals
belonging to 10 Classes and 237 morphotypes, 11 troglobitic and two troglomorphic and possible troglobites.
Greatest species abundance (N=330) and richness (s=76) were recorded at Lapa do Cipó cave, followed by Gruta
Olhos d’Água (N=330, s=71), which shows the highest TD value (Δ + = 90.18) in relation to the others, including
the richest Lapa do Cipó (Δ + = 85.24), consequence of the several taxonomic units with large number of species.
The below-expected values of TD (Δ + = 87.70) may indicate anthropic impacts on these communities. Our results
demonstrate that Gruta Olhos d’ Água and Lapa do Cipó caves are the most important sites for the occurrence
of endemic and troglobitic species and may be part of a complex system that should be considered for a more
efficient conservation planning.
Keywords: Diversity, Gruta Olhos d’ Água cave, troglobites, subterranean environment.
Times Cited:
1
Relevent Species:
Related Records:
Chaimowicz, F. (1984)
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Chaimowicz, F. (1986)Observacoes preliminares sobre o ecosistema da Gruta Olhos d'Agua, Itacarambi, MG
Trajano, E. and Menna-Barreto, L. (1996)Free-running locomotor activity rhythms in cave dwelling catfishes, Trichomycterus sp., from Brazil (Teleostei, Siluriformes)
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