55 research outputs found
Biolistic-mediated genetic transformation of cowpea (Vigna unguiculata) and stable Mendelian inheritance of transgenes.
Flavonoids from Annona dioica leaves and their effects in Ehrlich carcinoma cells, DNA-topoisomerase I and II
Isolamento, identificação e avaliação da atividade antileucêmica de alcaloides indólicos monoterpênicos de Tabernaemontana salzmannii (A. DC.), Apocynaceae
Characterization of soil structure and porosity under long-term conventional tillage and no-tillage systems
Oil palm monoculture induces drastic erosion of an Amazonian forest mammal fauna
Oil palm monoculture comprises one of the most financially attractive land-use options in tropical forests, but cropland suitability overlaps the distribution of many highly threatened vertebrate species. We investigated how forest mammals respond to a landscape mosaic, including mature oil palm plantations and primary forest patches in Eastern Amazonia. Using both line-transect censuses (LTC) and camera-trapping (CT), we quantified the general patterns of mammal community structure and attempted to identify both species life-history traits and the environmental and spatial covariates that govern species intolerance to oil palm monoculture. Considering mammal species richness, abundance, and species composition, oil palm plantations were consistently depauperate compared to the adjacent primary forest, but responses differed between functional groups. The degree of forest habitat dependency was a leading trait, determining compositional dissimilarities across habitats. Considering both the LTC and CT data, distance from the forest-plantation interface had a significant effect on mammal assemblages within each habitat type. Approximately 87% of all species detected within oil palm were never farther than 1300 m from the forest edge. Our study clearly reinforces the notion that conventional oil palm plantations are extremely hostile to native tropical forest biodiversity, which does not bode well given prospects for oil palm expansion in both aging and new Amazonian deforestation frontiers
Investigação etiológica da deficiência auditiva em neonatos identificados em um programa de triagem auditiva neonatal universal
Demografia de perfilhos basilares em pastagem de Brachiaria decumbens adubada com nitrogênio
Brachyuran crustaceans from the bycatch of prawn fisheries at the mouth of the Amazon river
Bioecology of the crab Ucides cordatus (Crustacea, Decapoda) in mangroves influenced by the Amazon River, Brazil
- …