A utilização de métodos de conectividade da paisagem para prever a alocação de medidas mitigatórias aos atropelamentos de fauna.
Data
Autor(es)
Título da Revista
ISSN da Revista
Título de Volume
Editor
Abstract
Connectivity is one of the main strategies for biodiversity conservation of fragmented landscapes because it helps habitat dynamics and species movement through the landscape. Connectivity has an essential role in fauna running over mitigation due to its principal objective, which is to reconnect the population increasing structural connectivity and minimizing running over mortality risk on the roads. In this regard, we tested the efficacy of different methodologies in the allocation of mitigation measures of fauna, using as a model a stretch of BR-101, in Rio de Janeiro state. Connectivity models of the landscape were compared with the aggregation analysis method of running overs, using a data group of 525 running overs in the years from 2010 to 2016. Our results indicated that the connectivity method of the landscape is able to predict a superior number of allocation points for mitigation measures for all fauna groups, since it indicates 190 potential points for allocation of mitigation measures, while the aggregation analysis method of running overs indicates 59 points. The results achieved showed the necessity to consider other variables, such as soil usage and habitat connectivity, for mitigation measures implementation. The connectivity method can be considered to be an efficient tool because it can inform more accurate results about several potential points of animal displacement over the roads, and it is a less costly methodology. Based on the great database and using circuit theory, it is possible to propound scenarios and places for mitigation measures implementation, according to characteristics of each group of species. This is more effective for biodiversity conservation in fragmented landscapes, and it is a lower cost for public and private enterprises.
