Influência das espécies não nativas sobre a estrutura funcional das assembleias de peixes de riachos neotropicais com interferências antrópicas

• Ano de defesa: 2024
• Autor(a) principal: Zavaski, Arielli Giachini
• Orientador(a): Cunico, Almir Manoel
• Banca de defesa: Sanches, Paulo Vanderlei , Cremonez, Mariele Pasuch de Camargo , Cunico, Almir Manoel
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Estadual do Oeste do Paraná; Toledo
• Programa de Pós-Graduação: Programa de Pós-Graduação em Recursos Pesqueiros e Engenharia de Pesca
• Departamento: Centro de Engenharias e Ciências Exatas
• País: Brasil
• Palavras-chave em Português: Traços funcionais; Atividades antrópicas; Ictiofauna; Espécies introduzidas
• Palavras-chave em Inglês: Functional traits; Anthropogenic activities; Ichthyofauna; Introduced species
• Área do conhecimento CNPq: CIENCIAS AGRARIAS::RECURSOS PESQUEIROS E ENGENHARIA DE PESCA
• Link de acesso: https://tede.unioeste.br/handle/tede/7286

Functional diversity is represented by biological characteristics of species associated with functionality in the ecosystem, and can be used to detect environmental changes due to human actions, such as the introduction of non-native species. Thus, our objective was to test the effect of land use and occupation and the presence of non-native fish species on the functional structure of fish assemblages in Neotropical streams. Sampling was carried out in 22 streams belonging to the Paraná and Iguaçu river basins, Brazil, using electrofishing. Significant relationships between functional traits and non-native species and urbanization were detected by redundancy analysis. Significant correlation was recorded between functional dispersal (FDis) and the proportion of non-native species. Therefore, we conclude that non-native species introduced new traits, increasing FDis and altering the composition of the functional structure of the urbanized stream community.