How Many Mammals Are Killed on Brazilian Roads? Assessing Impacts and Conservation Implications

Millions of animals are killed on roads annually due to collisions with vehicles, particularly medium–large mammals. Studies mammal road-kill flourished in Brazil the last decade and an assessment research impacts at a country level will help define science-based conservation strategies. In this study, we used compiled scientific literature provide state knowledge medium large-sized mammals by road traffic Brazil, their status, approximation magnitude. We reviewed total 62 papers that reported data accounting for 11.817 individuals. Of 102 species found IUCN list, more than half (n = 62; 61%) were recorded as Brazilian roads. The Carnivora order comprises over quarter 23; 37%) road-killed species. A 9 (14.5%) classified threatened, further 10 (16%) Near Threatened. Over 33, 53%) showed declining population trends according status. Our extrapolation results entire paved network number can reach almost million yearly (maximum 8.7 million; mean 1.3 million), representing biomass 10000 tons. highest roadkill rates common generalists least concern species, although there also threatened near within top 15 rates. most reflect serious concerns, since is lack information mortality effects levels. suggest severally affected Brazil. More investigations needed local abundance levels, way allows inclusion important threat target impacted national territory, develop adequate plans mitigate those impacts.