Journal Article
The role of turnover in structuring subterranean aquatic communities in Southeastern Brazil
Zepon, T. and Bichuette, M.E.
Record Number:
6394
Year:
2024
Journal:
Annals of the Brazilian Academy of Sciences
Pages:
1-19
Volume:
96(2): e20230194
URL:
www.scielo.br/aabc
Abstract:
Abstract: Similarly to other animal communities, the diversity of subterranean aquatic
fauna is influenced by several factors and processes, such as habitat fragmentation,
dispersion, environmental heterogeneity, and physical and chemical water characteristics.
Here, we studied cave aquatic communities of the Alto Ribeira hydrographic basin,
regarding troglobitic and non-troglobitic species, located in a single karst area to
evaluate the influence of sub-basins in fauna differentiation. We investigated how
abiotic variables (flow, electrical conductivity, temperature, pH, and substrate) influence
the fauna composition and the contribution of beta diversity components (nestedness
and turnover) in explaining communities’ dissimilarities. Fauna composition differed
between sub-basins, as most species did not co-occur in different caves. Caves with
higher flow and substrate diversity were the richest. In addition, each cave community
was influenced by a unique set of abiotic variables. Dissimilarity among caves was mainly
explained by turnover, and our findings suggest the restricted species distribution could
be due to ecological (e.g., limited dispersion capacity, tolerance to abiotic variables),
hydrogeological (e.g., dispersion barriers, isolation of sub-basins), and historical (e.g.,
colonization, paleoclimatic events) factors and processes. Therefore, different elements
are responsible for determining the composition of cave aquatic communities in
different sub-basins, reflecting the variability within a single karst area.
Key words: abiotic variables, beta diversity, caves, conservation, dispersion, river basin.
Times Cited:
1
Relevent Species:
Related Records:
Gosline, W.A. (1947)
Contibutions to the classification of the loicariid catfishes
Karmann, I. (1994)Evolução e Dinâmica Atual do Sistema Cárstico do Alto Vale do Rio Ribeira de Iguape, Sudeste do Estado de São Paulo
Derijst, E. (1996)Notes on the type species of the mailed catfish genus Pareiorhaphis Miranda-Ribeiro 1918 (Pisces: Siluriformes: Loricariidae), with the introduction of Isbrueckichthys nom. nov.
Trajano, E., Secutti, S., Pereira, E.H.L. and Reis, R. E. (2008)A cave population of Isbrueckerichthys alipionis (Gosline, 1947) in the Upper Ribeira karst area, southeastern Brazil (Siluriformes: Loricariidae)
Roxo, F.F., Zawadzki, C.H., Guilherme, J., Silva, D.C., Chiachio, M.C., Foresti, F., and Oliveira, C. (2012)Molecular systematics of the armored neotropical catfish subfamily Neoplecostominae (Siluriformes: Loricariidae)
Pereira, H.L. and Reis, R.E. (2017)Morphology-based phylogeny of the suckermouth armored catfishes, with emphasis on the Neoplecostominae (Teleostei: Siluriformes: Loricariidae)
Trajano, E. (2021)Diversity of Brazilian troglobitic fishes: Models of colonization and differentiation in subterranean habitats
Zepon, T. and Bichuette, M.E. (2024)The role of turnover in structuring subterranean aquatic communities in Southeastern Brazil