A preview of the PDF is not available
Heterogeneidade estrutural e diversidade de pequenos mamíferos em um fragmento de mata secundária de Minas Gerais, Brasil
STRUCTllRAL IIETEROGENErrV AI"D DIVERsrrv OI' SMALL MAMMAL~ IN A SECONDARY FOREsr FRAGMENTOF MINAS GERAIS. BRASIL. The aim is lo delermine lhe rclalionship helween lhe diversily of small mammals and the slructural helerogeneity and/or seeondary suceessional slages in an Atlantic foresl fragment aI Viçosa (Minas Gerais). We used Sherman and hook live traps lo sample this fauna, monthly from may 1992 to april 1993 in lhree arcas: an ahandoned planlation ofMelinis mil1llliJInra (campo) and lwo distincl forest arcas (capoeira and mala). The slruelural hclerogeneily was delermined as a funclion of lhe presence of dead lrees. pioneer species. epiphytes. lhe distances helween trees. lhe lree heighl and bas.11 area measured hy a modified quadrant sample melhod (ConAM & CURTtS 1945). It was sampled a lotai of 340 individuais bclonging to 17 species. The homogeneous plantalions had the highesl diversily (H" = 1.67). Among lhe lWO foresls stands lhe lcss helerogeneous capoeira had similar diversity (H" = 1.19) lhan lhe more helerogeneous stand. lhe mala (H' = 1.13). The unexpected higher diversily and species richness in lhe more homogeneous habitat may he explained hy some hidden faclor which decrease lhe compclilion for resources in lhis communily.