Soil enzymatic activity in Brazilian biomes under native vegetation and contrasting crop** and management

JZ Barbosa, G Poggere, RS Corrêa, M Hungria… - Applied Soil …, 2023‏ - Elsevier
Enzymatic activity is a useful indicator for the evaluation of soil biological components.
However, a detailed analysis of such indicators in Brazilian soils is lacking. In this study, the …

[HTML][HTML] Multivariate Analysis and Machine Learning in Properties of Ultisols (Argissolos) of Brazilian Amazon

CMP Souza, A Thomazini, CEGR Schaefer… - Revista Brasileira de …, 2018‏ - SciELO Brasil
Ultisols are the most common soil order in the Brazilian Amazon. The Legal Amazon (LA)
has an area of 5× 106 km2, with few accessible areas, which restricts studies of soils at a …

Geochemistry signatures of mercury in soils of the Amazon rainforest biome

FRD Lima, P Pereira, ECS Junior, ICF Vasques… - Environmental …, 2022‏ - Elsevier
Mercury (Hg) toxicity in soils depends on Hg species and other physical and chemical
attributes, as selenium (Se) hotspots in soils, particularly relevant in Amazonian soils. The …

Soil type determines the magnitude of soil fertility changes by forest-to-pasture conversion in Western Amazonia

FI Rocha, E da Conceição Jesus, WG Teixeira… - Science of the Total …, 2023‏ - Elsevier
The deforestation of tropical forests raises environmental concerns worldwide. Removing
the pristine forest impacts the soil, consequently affecting the environmental services it …

[HTML][HTML] Potential of organic wastes typical of the Brazilian Amazon for fertilizer use in agriculture

ARB e Silva, VI Franzini - Environmental Challenges, 2024‏ - Elsevier
Abstract Characterization of different organic wastes is essential to reveal alternative nutrient
sources useful for agriculture. The objective of this work was to characterize a variety of …

Urban growth threatens the lowland Amazonian Manaus harlequin frog which represents an evolutionarily significant unit within the genus Atelopus (Amphibia: Anura …

RF Jorge, WE Magnusson, DA Silva… - Journal of Zoological …, 2020‏ - Wiley Online Library
The Manaus harlequin frog is an evolutionarily significant clade within the Atelopus
hoogmoedi species complex. Analyses of 16S and COI concatenated sequences support …

Magnetic susceptibility and properties of Alisols under forest and crops in south Amazonas

WBM Brito, MCC Campos, FG de Souza… - Journal of South …, 2024‏ - Elsevier
Anthropic actions have motivated pieces of research on the impacted naturally poor soils of
the Brazilian Amazon, requiring the use of diagnostic attributes that are increasingly specific …

Parâmetros físicos, químicos e microbiológicos da água em assen-tamento rural do Amazonas: o caso do PA Paciá (Lábrea/AM)

SC da Rocha Soares… - Águas …, 2020‏ - aguassubterraneas.abas.org
O acesso a água de qualidade na zona rural é uma problemática que requer atenção do
governo, uma vez que a maioria das comunidades não tem acesso à água potável. Esse …

Land-use system and forest floor explain prokaryotic metacommunity structuring and spatial turnover in Amazonian forest-to-pasture conversion areas

FI Rocha, TG Ribeiro, MA Fontes, S Schwab… - Frontiers in …, 2021‏ - frontiersin.org
Advancing extensive cattle production is a major threat to biodiversity conservation in
Amazonia. The dominant vegetation cover has a drastic impact on soil microbial …

Optimizing a traditional practice of soil fertilization for cassava cultivation in the Brazilian Amazonia

ARB Silva, RNB Alves… - … and Sustainable Food …, 2025‏ - Taylor & Francis
ABSTRACT A traditional practice of fertilizing soils with excreta deposited by cattle in small
paddocks at night is used for subsequent cultivation of cassava. However, research …