Agroforestry systems are an alternative option for sustainable production management. These systems contain trees that absorb nutrients from deeper layers of the soil and leaf litter that help improve the soil quality of the rough terrain in high altitude areas, which are areas extremely susceptible to environmental degradation. The aim of this study was to characterize the stock and nutrients in litter, soil activity and the population of microorganisms in coffee (Coffea arabica L.) plantations under high altitude agroforestry systems in the semi-arid region of the state of Pernambuco, Brazil. Samples were collected from the surface litter together with soil samples taken at two depths (0-10 and 10-20 cm) from areas each subject to one of the following four treatments: agroforestry system (AS), native forest (NF), biodynamic system (BS) and coffee control (CT).The coffee plantation had been abandoned for nearly 15 years and, although there had been no management or harvesting, still contained productive coffee plants. The accumulation of litter and mean nutrient content of the litter, the soil nutrient content, microbial biomass carbon, total carbon, total nitrogen, C/N ratio, basal respiration, microbial quotient, metabolic quotient and microbial populations (total bacteria, fl uorescent bacteria group, total fungi and Trichoderma spp.) were all analyzed. The systems that were exposed to human intervention (AS and BS) differed in their chemical attributes and contained higher levels of nutrients when compared to NF and CT. BS for coffee production at high altitude can be used as a sustainable alternative in the high altitude zones of the semi-arid region in Brazil, which is an area that is highly susceptible to environmental degradation.
Resumo -O presente estudo teve como objetivo analisar os fatores intervenientes na aquisição do HIV, além de examinar as repercussões do HIV/Aids sobre os domínios da vida do idoso e no funcionamento familiar. Para tanto, foram realizadas entrevistas aos idosos com HIV/ Aids, que realizam tratamento no SAE/JF. Os resultados evidenciaram que a forma predominante de contágio era a sexual. Além disso, para a maioria dos idosos não ocorreram mudanças significativas em seus domínios da vida após a descoberta da doença. Já no que se refere ao funcionamento familiar, destacaram-se aqueles que contaram para a família e se sentiram acolhidos, seguidos daqueles que mantiveram sigilo sobre a doença. Conclui-se que o apoio da família ao idoso é de extrema importância no processo de adaptação à sua nova condição; no entanto, a vergonha e o medo do julgamento são fatores que contribuem para que os idosos mantenham em segredo a soropositividade, visando manter a estrutura das redes sociais existentes. Palavras Chave: HIV; idosos; domínios da vida; funcionamento familiar.Abstract -The objective of this study was
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