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Land-Use System and Forest Floor Explain Prokaryotic Metacommunity Structuring ...

Made available in DSpace on 2021-06-25T15:04:11Z (GMT). No. of bitstreams: 0 Previous issue date: 2021-04-21; USAID; National Academies of Sciences, Engineering, and Medicine of the United States (NAS); United States National Science Foundation; Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq); Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES); Advancing extensive cattle pr...

Variações do Carbono Orgânico Dissolvido e de Atributos Físicos do Solo Sob Dif...

Carbono e nutrientes do solo em capoeiras de diferentes idades na Comunidade In...

Soil Carbon Stocks under Amazonian Forest: Distribution in the Soil Fractions a...

Atributos químicos, físico-hídricos e mineralogia da fração argila em solos do ...

Estudos sobre os atributos dos solos amazônicos geram informações para compor um levantamento atual sobre suas condições frente às várias formas de alterações que estão sujeitos. O objetivo deste trabalho foi descrever e avaliar a evolução química, físico-hídrica, bem como a mineralogia de Latossolos no Baixo Amazonas como forma de entender as variações desses atributos em diferentes coberturas vegetais. Coleta...

Residual effect of biochar and saw dust powder on carbon and total nitrogen con...

The biochar (BC) acts as a physical, chemical and biological conditioner, which added to increasing doses of saw dust powder (PS) can contribute to soil improvement. The objective of this work was to verify the residual effect of BC and PS on total carbon, organic carbon, total nitrogen and carbon and nitrogen in a dystrophic yellow latosol in the central Amazon. The experiment was carried out at the experiment...

The domestication of amazonia before european conquest

During the twentieth century, Amazonia was widely regarded as relatively pristine nature, little impacted by human history. This view remains popular despite mounting evidence of substantial human influence over millennial scales across the region. Here, we review the evidence of an anthropogenic Amazonia in response to claims of sparse populations across broad portions of the region. Amazonia was a major centr...

Variations of dissolved organic carbon and soil physical properties under diffe...

The purpose of this study was to assess the relationship between dissolved organic carbon (DOC) and physics properties of soil under different land use systems in central Amazonia. The DOC concentrations of primary forest soil were measured in three topographical positions, and in areas of pasture, secondary forest and an agroforestry system (AFs) down to a depth of 2 m. The soil solution was collected and anal...

Avaliação da condutividade hidraulica do solo saturada utilizando dois métodos ...

O objetivo desse trabalho foi avaliar dois métodos de laboratório para a determinação da condutividade hidráulica do solo saturada (Ko) conhecidos como Permeâmetro de carga constante (PCC) e Permeâmetro de carga decrescente (PCD), com o intuito de verificar sua aplicabilidade e variabilidade em solos amazônicos. Coletaram-se 125 amostras de solo com estrutura indeformada, através de amostrador tipo Uhland, com ...

Soil organic carbon, carbon stock and their relationships to physical attribute...

The soil carbon under Amazonian forests has an important roles in global changing, making information on the soil content and depths of these stocks are considerable interest in efforts to quantify soil carbon emissions to the atmosphere.This study quantified the content and soil organic carbon stock under primary forest up to 2 m depth, at different topographic positions, at Cuieiras Biological Reserve, Manaus...