Fragmentação florestal em região semiárida no Nordeste do Brasil

Janisson Batista de Jesus; Dráuzio Correira Gama; José Monteiro do Nascimento Júnior; Márcia Rodrigues de Moura Fernandes; Milton Marques Fernandes

doi:10.4336/2019.pfb.39e201801683

Forest fragmentation in a semiarid region in northeastern Brazil

Authors

Janisson Batista de Jesus Federal University of Rio Grande do Sul http://orcid.org/0000-0001-8372-5557
Dráuzio Correira Gama Southwest Bahia State University http://orcid.org/0000-0002-6357-0698
José Monteiro do Nascimento Júnior Federal University of Sergipe http://orcid.org/0000-0002-8778-6557
Márcia Rodrigues de Moura Fernandes Federal University of Espírito Santo https://orcid.org/0000-0001-6321-4434
Milton Marques Fernandes Universidade Federal de Sergipe, Departamento de Ciências Florestais http://orcid.org/0000-0002-9394-0020

DOI:

https://doi.org/10.4336/2019.pfb.39e201801683

Keywords:

Remaining forest, Seasonally dry tropical forest, Indexes of landscape ecology

Abstract

The studies of landscape ecology from metrics using geoprocessing and remote sensing are important technologies to evaluate the conditions of native forest remnants, especially in biomes fragmented and with a high rate of deforestation as the Caatinga. This study aimed to describe the structure of the forest landscape in the municipality of Ribeira do Pombal, Bahia State, Brazil, using a landscape metric index. The use of soil and forest fragments was characterized using an image of the Landsat-8 OLI satellite. We used the software Fragstats 4.2® to calculate the landscape metrics. Even in a matrix with high percentage of pastures, fragments of the open and dense caatinga of medium and large size predominate in the landscape, with great proximity and connectivity. Reforestation and enrichment of the small fragments of open Caatinga may contribute to form ecological corridors. The great percentage of fragments larger than 100 ha ensures floristic diversity and resilience of the dense caatinga in the municipality of Ribeira do Pombal, BA.

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Published

2019-12-30

Issue

Vol. 39 (2019)

Section

Articles

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