Entendendo fatores que influenciam o atropelamento de Fauna em uma área protegida na Floresta Amazônica
Fecha
2022-12-19Autor
http://lattes.cnpq.br/8231978024681502
COSTA, Andréa Coeli Gomes de Lucena
Metadatos
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Vertebrate’s roadkill constitutes an important impact in natural areas. However, data on
this topic in the Amazon domain are still scarce, especially within protected areas. In
this study, we analyzed data from two years of monitoring amphibians, reptiles,
mammals, and birds that were run over in five types of traffic routes (highway, railroad,
urban area, paved roads, and dirt roads) in a conservation unit in the Brazilian Amazon.
We tested which vertebrate classes and feeding guilds were most affected, besides the
influence of seasonality and the spatial pattern of roadkill. In the studied area, 2,795
roadkills were registered, with amphibians being the most registered. Most roadkills
occurred during the rainy season. Correcting the roadkill data using observer efficiency
data and carcass permanence time based on data from the literature, we conclude that
mortality rates may be underestimated by up to 40 times when compared to the raw
data. There was no significant difference between the feeding guilds in terms of
fatalities, and rainfall and temperature had a significant effect on road kills of all classes
of vertebrates. The spatial pattern of roadkills varied between the types of traffic routes
and the class of vertebrates. The results indicate that amphibians are the most impacted
by roadkill, although they are neglected in many monitoring of traffic routes. Mitigation
measures for this type of impact should take into account times when the highest
number of deaths occur since rainfall and temperature influence this type of accident,
that is, pedestrian accidents decrease as the temperature increases and rainfall decreases.
Likewise, different classes of vertebrates have different impact concentration patterns
along traffic routes, which makes mitigation planning more complex. Therefore,
planning to reduce vertebrate deaths by roadkill must take into account the particularity
of each taxon.