Mapping Wildlife Hotspots

Monitoring Road-Killed Species on Highways in the Agreste Region of Pernambuco

Abstract

ABSTRACT

Objective - This study aimed to map these hotspots, document the most affected species, and provide information for developing mitigation strategies in the Southern Agreste region of Pernambuco.

Methodology - The research was conducted along two sections of the BR-423 highway over eight months, recording road-killed animals using georeferencing, photography, and taxonomic identification. Spatial analyses were then performed in QGIS software to estimate the density of collisions through hotspot maps.

Originality/Relevance - There is a growing need to identify and mitigate the impacts of highways on wildlife, with a particular focus on roadkill hotspots, which not only threaten biodiversity but also disrupt essential ecosystem services.

Results - The maps revealed a high density of roadkill in specific sections associated with water bodies and vegetated areas, as well as in regions near farms and rural properties, highlighting significant wildlife movement in these locations. The most frequently recorded species was Rhinella jimi, particularly during rainy periods, followed by Cerdocyon thous and Didelphis albiventris.

Theoretical/Methodological Contributions - The mapping of high-intensity collision points, critical wildlife-vehicle collision hotspots, demonstrates their association with environmental characteristics, seasonal patterns, and species' behavioral traits.

Social and Environmental Contributions - Basis for decision-making on appropriate mitigation measures, such as proper signage, speed reduction, and the creation of wildlife crossings, which are crucial for minimizing impacts on fauna and conserving biodiversity