A New Application for the Optimal Foraging Theory: The Extraction of Medicinal Plants

Table 1

Comparison among the three areas known as collection sites of Anadenanthera colubrina (Vell.) Brenan in the Carão community, Altinho, PE, Brazil, emphasizing the ecological parameters and species extraction, as well as the recognition of areas in the interviews.

	“Grounds”	“Base of slope”	“Slope”
Total of sampled individuals	119	1040	1
Absolute density (ind./hectare)	4,33	385,19	5
Total of exploited individuals (%)	62 (52.1)	73 (7.01)	0 (0)
Bark extraction (%)	18 (15.2)	42 (4.03)	0 (0)
Selective cutting (%)	48 (40.33)	34 (3.26)	0 (0)
Citations in the interviews (%)	42 (60.86)	1 (1.44)	26 (37.68)