Fragmentation of trees species populations in the Apeu river basin in northeastern Para State
Abstract
The techniques of remote sensing and GIS in environmental characterization and the study of landscape ecology in the Apeu river basin were used with the intention to generate subsidies for the implementation of public policies directed to environmental planning with biodiversity conservation. In 2008, a map of land cover and land use was generated through TM/Landsat 5 digital images; subsequently, the analysis of the fragmentation of trees species populations was performed by landscape metrics. The landscape of the Apeu river basin is strongly marked by cattle ranching and the natural vegetation covers 34.4% of the basin area. This vegetation is highly fragmented and most of it is located next to water resources. In the landscape of the Apeu river basin, 70% of the natural vegetation consists of edge environment, which risks the sustainability of the ecosystem. Thus, the development of efficient ecological management plans is a way of contributing to the conservation and recovery of the remaining fragments of degraded areas in the region.
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