Figure 1.
The triangles indicate the location of the three Kayapó villages and the points, the location of the 20 B. excelsa groves sampled in this study, in Kayapó Indigenous Land, southeastern Amazonia. Identification numbers of groves correspond to those of Table S1 in the supporting information.
Figure 2.
Multiple regression analysis testing the effect of Brazil nut harvesting intensity on the density of seedlings.
The partial regression to the left shows the relationships between density of B. excelsa seedlings (DS) and years of harvest (YH), and the partial regression on the right shows the relationship between density of seedlings and commercial seed production in tons (PR) in B. excelsa groves in the Kayapó Indigenous Land, southeastern Amazonia. The points in each graph represent the 20 B. excelsa groves sampled. The full multiple regression model has R2 = 0.576.
Table 1.
Results of multiple regressions testing the effects of Brazil nut harvesting on the density of B. excelsa seedlings in 20 B. excelsa groves located in Kayapó Indigenous Land, southeastern Amazonia.
Figure 3.
Comparison of B. excelsa seedling density along trails and in parallel transects away from trails.
Each point represents one of the transects in the territory of A'Ukre village, Kayapó Indigenous Land, southeastern Amazonia. The three points on the left are transects located along the main trails used to transport Brazil nuts from groves to the village and the three points on the right are transects parallel to those trails and 100m from them. Points with the same symbol represent pairs of along-trail and away-from-trail transects.