Mapeando a sensibilidade à instalação de linhas de energia: uma proposta de protocolo

Abstract

Access to electricity is a central factor for socioeconomic development. The distribution of electricity depends on power lines, which are a problem for the conservation of birds, especially for vulnerable species. In addition to attributes of biology and ecology of birds, geographic factors related to topography, vegetation, land use and presence of water bodies also influence the frequency of accidents. The objective of this work is to propose a method for mapping the areas sensitive to the installation of power lines combining attributes of birds and terrain. We proposed using 21 attributes available for Brazilian birds associated with diet, foraging method, foraging substrate, activity period and body mass. For each attribute evaluated we assigned a degree of susceptibility to accidents with transmission lines. The value of susceptibility of each species is equal to the sum of the degrees of susceptibility of the set of attributes of each species. The total value of each species in the classification sequence will then be assigned to the distribution areas of these species, resulting in a sensitivity map of the occurrence of these effects associated with the occurrence of species. In addition, each area of the land receives a value of susceptibility according to the covered geographical aspects (vegetation, land use, hydrology, and topography) which also received susceptibility values according to their contribution to the occurrence of accidents. The final susceptibility map represented by the sum of the sensitivities of the land and the birds that occur on site can be used for the planning of the transmission lines and the action of mitigating measures.