Brazilian Journal of Enviromnent
Open Access Journal
CiteScore
0.5
Indexada na
SCOPUS
QUALIS
B2
2021-2024
quadriênio
Open Access Journal
0.5
Indexada na
SCOPUS
B2
2021-2024
quadriênio
Tecnologias e Estudos Ambientais | Vol. 14 Issue 2 (2026)
Published in March 09, 2026
Anthropogenic pressures directly threaten anurans, organisms sensitive to environmental changes such as noise pollution, artificial light, water degradation, and microhabitat loss. In ecotones like the Cerrado–Atlantic Forest transition, such impacts intensify because these environments function as biogeographical overlap zones, bringing together species with different ecological requirements and a greater vulnerability to disturbances. This study assessed the anuran richness in an urban stream characterized as a vereda (palm swamp) in this transition region, during the rainy season, over three sampling campaigns. Active search with photographic records was employed, and specimens requiring taxonomic confirmation were euthanized with a 5% lidocaine overdose, identified in the laboratory, fixed in formaldehyde, preserved in 70% alcohol, and incorporated into the university's scientific collection. The water quality of the spring/source was assessed using the Rapid Assessment Protocol (PAR). Only three species established in urban environments were recorded: Leptodactylus labyrinthicus, Leptodactylus podicipinus, and Rhinella diptycha. Although the observed richness was reduced compared to what is expected for vereda areas, this pattern reflects the intense human modification (anthropization) of the environment, where only species with high behavioral, reproductive, and physiological plasticity are capable of persisting. Such taxa, frequently described as generalists, evidence a process of environmental filtering in which more sensitive species are excluded. The resilience shown by these anurans contrasts with the potential loss of local diversity, highlighting the importance of mitigation and environmental restoration actions that reestablish the ecological integrity of the ecotone and favor the return of more demanding species.
This work is licensed under a Creative Commons Attribution 4.0 International License.
Copyright (c) 2026 Miguel Alexandre De Carvalho, Isabel da Silva Pereira , Driélli Caroline Pedrobon , Andressa Cristina Facincani , Rafael Montini Passafaro , Luciana Segura de Andrade
https://orcid.org/0009-0002-2495-2922