Research Article

Plant Stem Bark Extractivism in the Northeast Semiarid Region of Brazil: A New Aport to Utilitarian Redundancy Model

Table 2

Tannin content, expressed as a percentage, of the preferred and less-preferred species studied in the community of Carão, Altinho, northeastern Brazil.

SpeciesTannin content (%)

Preferred
Amburana cearensis (Allemão) A. C. Sm.nd
Anadenanthera colubrina (Vell.) Brenan8.24
Erythrina velutina Willd.nd
Maytenus rigida Mart.nd
Mimosa tenuiflora (Willd) Poir.12.58
Myracrodruon urundeuva Allemão6.88
Libidibia ferrea (Mart. ex Tul.) L. P. Queiroz6.24
Less preferred
Schinopsis brasiliensis Engl.5.53
Hymenaea courbaril L.2.35
Handroanthus impetiginosus (Mart. ex DC.) Mattosnd
Cereus jamacaru DC.nd
Croton blanchetianus Baill.2.47
Spondias tuberosa Arruda1.51

nd: not detected.