TY  - JOUR 
T1  - Patterns of species richness and abundance among cactus communities receiving different rainfall levels in the semiarid region of Brazil
JO  - Acta Botanica Brasilica
A1  - Ferreira, Paulo Sérgio Monteiro
A1  - Lopes, Sérgio de Faria
A1  - Trovão, Dilma Maria de Brito Melo
SN  - 0102-3306
UL  - 10.1590/0102-33062016abb0084
VL  - 30 
Y1  - 2016
PB  - Brasil 
ER  -