AVALIAÇÃO E PROPOSTAS DE MITIGAÇÃO DE ATROPELAMENTOS DA FAUNA SILVESTRE NO TRECHO DA RODOVIA BR-469, NO PARQUE NACIONAL DO IGUAÇU/PR, PATRIMÔNIO NATURAL MUNDIAL

• Ano de defesa: 2025
• Autor(a) principal: Silva, Bruna Vianna Garcia da
• Orientador(a): Szinwelski , Neucir
• Banca de defesa: Abra, Fernanda Delborgo, Foster, Vânia Cristina
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Estadual do Oeste do Paraná; Cascavel
• Programa de Pós-Graduação: Programa de Pós-Graduação em Conservação e Manejo de Recursos Naturais
• Departamento: Centro de Ciências Biológicas e da Saúde
• País: Brasil
• Palavras-chave em Português: Atropelamento de fauna; Hotspots de mortalidade; Rodovia BR-469; Medidas de mitigação; Conservação da biodiversidade; Wildlife roadkill; Mortality hotspots; BR-469 highway; Mitigation measures; Biodiversity conservation
• Área do conhecimento CNPq: CIÊNCIAS AMBIENTAIS
• Link de acesso: https://tede.unioeste.br/handle/tede/8110

The BR-469 highway, which crosses the interior of Iguaçu National Park (PNI), poses a significant threat to local wildlife, especially due to the increasing number of roadkill incidents recorded between 2016 and 2023. This study aimed to identify the most vulnerable taxonomic groups, analyze the relationship between roadkill frequency and traffic intensity, and map key hotspots along the 11.6 km stretch of road within the protected area. Only records with adequate spatial and taxonomic precision were considered, totaling 630 occurrences documented through systematic weekly monitoring. Data analysis was performed using Generalized Linear Models (GLMs) with Poisson distribution, considering traffic intensity, road sinuosity, proximity to water bodies, vegetation structure along the road, and seasonality as explanatory variables. Faunal records were grouped into five categories: mammals, birds, reptiles, amphibians, and gastropods. Results indicated that amphibians, gastropods (especially Megalobulimus sanctipauli), and reptiles were the most frequently affected, particularly in sections close to aquatic habitats and dense vegetation. Although mammals and birds were less affected numerically, a positive correlation with increased traffic was also observed. The distribution of incidents was not homogeneous, with well-defined peaks indicating wildlife mortality hotspots. These patterns highlight the influence of landscape structure and road use intensity on fauna mortality. Based on these findings, the implementation of mitigation measures is recommended, including wildlife underpasses, guiding fences, targeted signage, and environmental education initiatives. Such strategies are essential to reduce the negative impacts on the park’s biodiversity and to promote coexistence between wildlife conservation and public road use.