Vertebrate road kill survey on a highway in southern Brazil/Levantamento de vertebrados atropelados em rodovias do sul do Brasil

Highways are a major factor acting in the decline of several wildlife populations. Impact occurs due to the continuous flow of motor vehicles over tracks and collision with animals using the same area. This study aimed to list road killed wild vertebrates found in highways in the Pampa Biome, state...

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Published in:Acta scientiarum. Biological sciences Vol. 39; no. 2; p. 219
Main Authors: Correa, Luiz Liberato Costa, Silva, Darliane Evangelho, de Oliveira, Stefan Vilges, Finger, Julia Victoria Grohmann, dos Santos, Cesar Rodrigo, Petry, Maria Virginia
Format: Journal Article
Language:English
Published: Universidade Estadual de Maringa 01-04-2017
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Summary:Highways are a major factor acting in the decline of several wildlife populations. Impact occurs due to the continuous flow of motor vehicles over tracks and collision with animals using the same area. This study aimed to list road killed wild vertebrates found in highways in the Pampa Biome, state of Rio Grande do Sul, over an entire year. The taxa found (amphibians, reptiles, birds and mammals) were identified to species level and their frequency of occurrence was seasonally registered. Along 2,160 km, we found 318 road killed individuals, totaling 65 species. This number represents an average of 0.147 road killed specimens by kilometer (that is, 1 individual each 7 km). Of these, seven species are under threat of extinction in the state of Rio Grande do Sul. We also found a seasonal pattern among road kills, in which the highest number of road killed animals was registered in the summer and spring months. These results contribute to increase knowledge about which species are most impacted by road kill on highways of the Pampa Biome. Such data can be used as an indicator for the implementation of measures by competent bodies to mitigate impacts of highways in the state of Rio Grande do Sul. Keywords: mortality, wildlife, Rio Grande do Sul. As rodovias sao um fator provocador de declinio populacional de diversas especies da fauna silvestre. O impacto ocorre devido ao continuo fluxo de veiculos automotores sobre as pistas e a colisao dos mesmos com animais que tambem utilizam essa area. O presente estudo teve por finalidade listar os vertebrados silvestres encontrados atropelados em rodovias no bioma Pampa, no Estado do Rio Grande do Sul, ao longo de um ano. Os taxons encontrados (anfibios, repteis, aves e mamiferos) foram identificados em nivel especifico e a sua frequencia de ocorrencia foi registrada de forma sazonal. Em 2.160 km de estrada percorridos, foram encontrados 318 individuos atropelados, totalizando 65 especies. Essa quantia representa uma media de 0,147 especimes atropelados por quilometro (ou seja, 01 individuo atropelado a cada 07 Km). Destas, sete especies estao sob ameaga de extincao no Estado do Rio Grande do Sul. Foram observados padroes sazonais nos atropelamentos, sendo que os meses de verao e da primavera apresentaram o maior numero de animais atropelados. Os resultados do estudo contribuem para o conhecimento de quais especies da fauna silvestre sao mais impactadas por atropelamentos no bioma Pampa. Estes dados poderao ser utilizados como orientacao na implantacao de medidas por orcaos competentes, afim de mitigar o impacto de rodovias no Estado do Rio Grande do Sul. Palavras-chave: mortandade, fauna silvestre, Rio Grande do Sul.
ISSN:1679-9283
DOI:10.4025/actascibiolsci.v39i2.33788