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Soil Biological, Chemical, and Physical Properties After a Wildfire Event in a Eucalyptus Forest in the Pampa Biome

Natielo Almeida Santana, Cedinara Arruda Santana Morales, Diego Armando Amaro da Silva, Zaida Inês Antoniolli, Rodrigo Josemar Seminoti Jacques

17/Jul/2018

ABSTRACT Wildfire events cause considerable environmental disturbance but few studies have examined changes in soil properties due to fire. This study aimed to assess the effect of a wildfire event on chemical, physical, and biological properties of the soil in a eucalyptus forest in the Pampa biome. Part of a seven-year-old eucalyptus forest was affected by a wildfire event that lasted for two days. Soil and plant litter sampling was performed in three areas: in the forest that was not […]

Geochemistry and Spatial Variability of Rare Earth Elements in Soils under Different Geological and Climate Patterns of the Brazilian Northeast

Cinthia Maria Cordeiro Atanázio Cruz Silva, Ronny Sobreira Barbosa, Clístenes Williams Araújo do Nascimento, Yuri Jacques Agra Bezerra da Silva, Ygor Jacques Agra Bezerra da Silva

18/Jun/2018

ABSTRACT Growth in the agricultural and industrial sectors has increased the demand for rare earth elements (REEs) in the production of technological devices and fertilizers. Thus, the accumulation of these elements in the soil has become an environmental concern. Here, we aim to determine the natural contents of REEs in soils derived from different parent materials and under climatic conditions ranging from humid to semi-arid. We then evaluate the influence of major elements and soil properties on the geochemistry of […]

Soil Compressibility under Irrigated Perennial and Annual Crops in a Semi-Arid Environment

Rafaela Watanabe, Getulio Coutinho Figueiredo, Álvaro Pires da Silva, Júlio César Lima Neves, Teogenes Senna de Oliveira

07/Jul/2017

ABSTRACT In irrigated soils, a continuous state of high moisture reduces resistance of the soil to applied external forces, favouring compaction. The aim of this study was to evaluate the susceptibility to compaction of developed calcareous soils in irrigated annual and perennial cropping systems of the Apodi Plateau, located in the Brazilian semi-arid region. Four areas of irrigated crops were evaluated: banana after two (B2) and 15 (B15) years cultivation, pasture (P), and a corn and beans succession (MB), as […]

Abundance and Diversity of Soil Macrofauna in Native Forest, Eucalyptus Plantations, Perennial Pasture, Integrated Crop-Livestock, and No-Tillage Cropping

Sheila Trierveiler de Souza, Paulo Cezar Cassol, Dilmar Baretta, Marie Luise Carolina Bartz, Osmar Klauberg, Álvaro Luiz Mafra, [...]

01/Aug/2016

ABSTRACT Intensive land use can affect macrofaunal biodiversity, which is a property that can be used as a soil quality indicator. This study evaluated the abundance and diversity of soil macrofauna and its relation to soil chemical and physical properties in five land use systems (LUS) in the eastern region of Santa Catarina. The following LUS were studied: native forest (NF), eucalyptus plantations (EP), perennial pasture (PP), integrated crop-livestock (ICL), and no-tillage cropping (NT). The macrofauna was quantified in 0.25 […]

Microbiological Indicators of Pasture Soil with Successive Applications of Pig Slurry

Danni Maisa da Silva, Zaida Inês Antoniolli, Rodrigo Josemar Seminoti Jacques, Andressa de Oliveira Silveira, Diego Armando Amaro da Silva, Magnus Maurício Rache, [...]

01/Dec/2015

ABSTRACT Pig slurry use as soil fertilizer is a common practice in southern Brazil. In spite of the benefits of reusing waste, this practice poses serious environmental risks. Microbiological indicators of soil quality are very sensitive and allow soil environment conditions to be monitored. The aim of this study was to evaluate the microbiological quality of pasture soils with different histories of successive use of pig slurry. Determinations were made of C content in the microbial biomass, soil microbial respiration, […]

RECOVERY OF AN OXISOL DEGRADED BY THE CONSTRUCTION OF A HYDROELECTRIC POWER PLANT

Joseane Carina Borges de Carvalho, Carlos Roberto Espindola, Marlene Cristina Alves, Getulio Coutinho Figueiredo, Sonia Carmela Falci Dechen

01/Dec/2015

ABSTRACT The removal of thick layers of soil under native scrubland (Cerrado) on the right bank of the Paraná River in Selvíria (State of Mato Grosso do Sul, Brazil) for construction of the Ilha Solteira Hydroelectric Power Plant caused environmental damage, affecting the revegetation process of the stripped soil. Over the years, various kinds of land use and management systems have been tried, and the aim of this study was to assess the effects of these attempts to restore the […]

PHYSICAL CHANGES IN A CAMBISOL CULTIVATED WITH MUSA SP. UNDER IRRIGATION IN THE APODI PLATEAU, CE, BRAZIL

Jaedson Cláudio Anunciato Mota, Thiago Leite de Alencar, Raimundo Nonato de Assis

01/Jul/2015

Soil properties become quality indicators as they come to be used to monitor soil changes through time. Under the hypothesis that the soils of the Chapada do Apodi (Apodi Plateau), CE, Brazil, underwent changes in physical quality through use, and that management systems lead to a new state of equilibrium in these properties, the aim of this study was to analyze the degree of these changes to ascertain whether soil use is leading to a process of physical degradation. A […]

LEAST LIMITING WATER RANGE IN CONSTRUCTED SOIL AFTER COAL MINING IN DIFFERENT CRITICAL LIMITS OF PENETRATION RESISTANCE AND WATER CONTENT

Ezequiel Cesar Carvalho Miola, Eloy Antonio Pauletto, Cláudia Liane Rodrigues de Lima, Luiz Fernando Spinelli Pinto, Luis Carlos Timm

01/Mar/2015

In quantifying the least limiting water range (LLWR), different critical limits of resistance to penetration (RP) and moisture at field capacity (θFC) are generally used. For agricultural soils, these values are documented in the literature. However, for constructed soil after coal mining, there is a large information gap. The aim of this study was to quantify the least limiting water range of a constructed soil under different cover crops in a coal mining area in Candiota, RS (Southern Brazil), considering […]