Search Results - "Luizão, Flavio J."
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Black carbon affects the cycling of non-black carbon in soil
Published in Organic geochemistry (01-02-2010)“…Black carbon (BC) is an important fraction of many soils worldwide and plays an important role in global C biogeochemistry. However, few studies have examined…”
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Stability of biomass-derived black carbon in soils
Published in Geochimica et cosmochimica acta (15-12-2008)“…Black carbon (BC) may play an important role in the global C budget, due to its potential to act as a significant sink of atmospheric CO 2. In order to fully…”
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3
Variation in aboveground tree live biomass in a central Amazonian Forest: Effects of soil and topography
Published in Forest ecology and management (01-10-2006)“…We used forest inventories, conducted in seventy-two 1-ha permanent plots to assess the variation in tree and palm aboveground live biomass (AGLB), and its…”
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Variation of carbon and nitrogen cycling processes along a topographic gradient in a central Amazonian forest
Published in Global change biology (01-05-2004)“…It is well recognized in the literature that topography can influence soil nutrient stocks and dynamics in temperate regions, but for tropical forests, this…”
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Water balance, nutrient and carbon export from a heath forest catchment in central Amazonia, Brazil
Published in Hydrological processes (15-08-2015)“…Carbon storage values in the Amazon basin have been studied through different approaches in the last decades in order to clarify whether the rainforest…”
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Leaf and Soil Nutrients in a Chronosequence of Second-Growth Forest in Central Amazonia: Implications for Restoration of Abandoned Lands
Published in Restoration ecology (01-05-2012)“…Subsistence agriculture, cattle ranching, and periodical land abandonment are common land‐use practices in Amazonia. Because changes in land use affect…”
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Soil CO2 exchange in seven pristine Amazonian rain forest sites in relation to soil temperature
Published in Agricultural and forest meteorology (15-07-2014)“…•Soil CO2 efflux measured in seven pristine Amazon rain forest sites.•Mean soil respiration depends on soil type, texture and moisture.•The…”
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Short-Term Temporal Changes in Tree Live Biomass in a Central Amazonian Forest, Brazil
Published in Biotropica (2010)“…We monitored seventy-two 1 ha permanent plots spread over 64 km² of terra firme forest at Reserva Ducke (Manaus, Amazonas, Brazil) over 2-yr intervals to…”
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Effect of earthworm addition on soil nitrogen availability, microbial biomass and litter decomposition in mesocosms
Published in Biology and fertility of soils (01-02-2004)“…The aim of the study was to determine the effect of adding two tropical earthworm species, Rhinodrilus contortus and Pontoscolex corethrurus, to mesocosms on…”
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10
Dissolved organic carbon concentration and its relationship to electrical conductivity in the waters of a stream in a forested Amazonian blackwater catchment
Published in Plant ecology & diversity (01-01-2014)“…Background: Dissolved organic carbon (DOC) is a major component of the total carbon in headstreams in Amazonia. Long-term measurements of DOC concentration are…”
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Soil acidity and nutrient deficiency in central Amazonian heath forest soils
Published in Plant ecology (01-10-2007)“…Experiments were carried out to test the effects of liming and nutrient additions on plant growth and soil processes such as C and N mineralisation in three…”
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12
The influence of the conservation status and changes in the rainfall regime on forest-savanna mosaic dynamics in Northern Brazilian Amazonia
Published in Acta amazonica (01-06-2014)“…Coupled carbon/climate models are predicting changes in Amazon carbon and water cycles for the near future, with conversion of forest into savanna-like…”
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13
Soil-induced impacts on forest structure drive coarse woody debris stocks across central Amazonia
Published in Plant ecology & diversity (04-03-2015)“…Background: Coarse woody debris (CWD) is an essential component in tropical forest ecosystems and its quantity varies widely with forest types. Aims:…”
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14
Inorganic and organic phosphorus pools in earthworm casts (Glossoscolecidae) and a Brazilian rainforest Oxisol
Published in Soil biology & biochemistry (01-03-2006)“…We compared differences in soil phosphorus fractions between large earthworm casts (Family Glossoscolecidae) and surrounding soils, i.e., Oxisols in 10…”
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15
Fine root growth and nutrient release in decomposing leaf litter in three contrasting vegetation types in central Amazonia
Published in Plant ecology (01-10-2007)“…We tested the hypothesis that the growth of fine roots upward into the leaf litter, forming a 'surface root mat', found widely in Amazonian forests, is of…”
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16
Litter manipulation and associated invertebrate fauna in secondary forest, central Amazonia, Brazil
Published in Acta oecologica (Montrouge) (01-11-2008)“…Plant litter from selected tree species has been used for improving soil productivity in low-input systems of secondary vegetation in Central Amazon, leading…”
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Carbon and nutrient stocks in the litter layer of agroforestry systems in central Amazonia, Brazil
Published in Agroforestry systems (01-01-2005)“…Both second-growth and agroforestry systems (AFs) have the potential for recovering thousands of abandoned pasturelands in Amazon. The AFs may do it faster…”
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Litter production and litter nutrient concentrations in a fragmented Amazonian landscape
Published in Ecological applications (01-06-2004)“…We analyzed the effects of distance to forest edge and soil texture on finelitter production and on nutrient concentrations in the leaf fall in an…”
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Evaluation of soil fertility in smallholder agroforestry systems and pastures in western Amazonia
Published in Agriculture, ecosystems & environment (01-05-2004)“…Agroforestry systems are often mentioned as a type of sustainable agriculture that is appropriate for the edapho-climatic conditions of Amazonia. However,…”
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Fine litter accumulation in Central Amazonian Tropical Rainforest canopy
Published in Acta amazonica (01-12-2010)“…Fine litter dynamics within the canopy differ from litter dynamics on the forest floor for reasons such as differences in microclimate, substrate, disturbance…”
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