Fig 1.
Map of the study area in southern Bahia, northeastern Brazil.
A: Atlantic Forest remnants (gray areas) and the 40 sampling sites (black circles). Dashed lines show the areas that were mapped for this study. Images of areas that are outside of the dashed lines were obtained from forest cover map “Atlas dos Remanescentes Florestais da Mata Atlântica” of open access [87]. B: Detail of some sampled landscapes (2 km radius), highlighting the percentage of forest cover (gray areas).
Table 1.
Richness and abundance of birds of different ecological groups.
Fig 2.
Total richness and abundance of forest-specialist and generalist species in the 40 sampling sites.
Landscapes vary in the amount of remaining forest cover from 6% to 85%. Lines correspond to the best fitting models.
Table 2.
Best models (in bold) for explaining the relationship between richness and abundance of ecological groups of birds and the amount of forest cover.
Fig 3.
Richness and abundance of frugivorous and insectivorous birds in the 40 sampling sites.
Landscapes vary in the amount of remaining forest cover from 6% to 85%. Lines correspond to the best fitting models.
Fig 4.
NMDS ordination of the 40 sites that were sampled in the Brazilian Atlantic Forest.
Black points represent the scores of landscapes and the numbers indicate the percentages of forest cover (from 6% to 85%). A: Forest-specialist birds, B: Generalist birds, C: Frugivorous birds, D: Insectivorous birds. Pairwise ANOSIM tests showed significant differences (p < 0.05) between the bird compositions of landscapes with percentages of forest cover that were less than (left polygons) and greater than (right polygons) the threshold values.