18 research outputs found
Caracterização e estoques de carbono de sistemas agroflorestaisno Cerrado de Minas Gerais
Energy and protein levels in diets containing phytase for broilers from 22 to 42 days of age: performance and nutrient excretion
Dinâmica da serapilheira e transferência de nitrogênio ao solo, em plantios de Pseudosamanea guachapele e Eucalyptus grandis
Distribuição espacial da granulometria, cor e carbono orgânico do solo ao longo de um transecto em microbacias na Amazônia meridional
One sixth of Amazonian tree diversity is dependent on river floodplains
Amazonia's floodplain system is the largest and most biodiverse on Earth. Although forests are crucial to the ecological integrity of floodplains, our understanding of their species composition and how this may differ from surrounding forest types is still far too limited, particularly as changing inundation regimes begin to reshape floodplain tree communities and the critical ecosystem functions they underpin. Here we address this gap by taking a spatially explicit look at Amazonia-wide patterns of tree-species turnover and ecological specialization of the region's floodplain forests. We show that the majority of Amazonian tree species can inhabit floodplains, and about a sixth of Amazonian tree diversity is ecologically specialized on floodplains. The degree of specialization in floodplain communities is driven by regional flood patterns, with the most compositionally differentiated floodplain forests located centrally within the fluvial network and contingent on the most extraordinary flood magnitudes regionally. Our results provide a spatially explicit view of ecological specialization of floodplain forest communities and expose the need for whole-basin hydrological integrity to protect the Amazon's tree diversity and its function.Naturali
Produ\ue7\ue3o de biossurfactantes a partir do cultivo de Bacillus atrophaeus ATCC9372 e Bacillus subtilis ATCC1012 em meio semi-sint\ue9tico contendo glicose, farelo de soja e case\uedna
The aim of this work was to evaluate the production of biosurfactants by Bacillus atrophaeus ATCC 9372 em medium containing glucose and casein
Biomonitoring of biosurfactant production by green fluorescent protein-marked Bacillus subtilis W1012
Biosurfactant production was investigated using two strains of Bacillus subtilis, one being a reference strain (B. subtilis 1012) and the other a recombinant of this (B. subtilis W1012) made able to produce the green fluorescent protein (GFP)