Recovery of an Oxisol Degraded by the Construction of a Hydroelectric Power Plant

Carvalho, Joseane Carina Borges de; Espíndola, Carlos Roberto; Alves, Marlene Cristina; Figueiredo, Getúlio Coutinho; Dechen, Sônia Carmela Falci

doi:10.1590/01000683rbcs20140641

Cited by 4 publications

(6 citation statements)

References 32 publications

(42 reference statements)

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“…The soil under cerrado, which presents a thicker plant cover, showed the highest total porosity value, 0.53 m 3 .m -3 , in spite of its rougher particle size distribution (Carvalho et al , 2015), probably due to is high sand content.…”

Section: Resultsmentioning

confidence: 97%

“…In this sense, in the study of Rodrigues et al (2007), which was carried out at experimental farm at the UNESP of Ilha Solteira, the cerrado and pasture MWD's also showed high indices when compared to the farm's degraded soils. Kemper and Chepil (1965) and using simulated rainfall according to Roth (1985) and Carvalho et al (2015).…”

Section: Resultsmentioning

confidence: 99%

“…Soil uses and managements were analyzed across five treatments employed in 12 x 10 m plots: (Carvalho et al, 2015).…”

Section: Samplingmentioning

confidence: 99%

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Spatial analysis of soil physical attributes from a degraded area under different types of management

Carvalho¹,

Espíndola²,

Alves³

et al. 2017

Afr. J. Environ. Sci. Technol.

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) of the soil; the mean weight diameter (MWD, mm) of the aggregates; and the percentage of aggregates resistant to rainfall were evaluated. The date of soil was analyzed with descriptive statistics for initial exploration and geostatistics, to analyze the spatial variability. There was spatial dependency and the parameter adjust range varied from 8 to 12 m under the treatments SD and SR for the aggregates and SR for macroporosity, total porosity and soil density. There was spatial dependency also under SP, for the aggregates, microporosity, and total porosity; under SC, for the aggregates; and under SDLE, for microporosity. Soil data with spatial dependence in the field were characterized both by high and low values in the same area. Therefore it is not adequate to consider these areas as homogeneous for future experiments and agricultural activities.

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Section: Resultsmentioning

confidence: 97%

Section: Resultsmentioning

confidence: 99%

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Spatial analysis of soil physical attributes from a degraded area under different types of management

Carvalho¹,

Espíndola²,

Alves³

et al. 2017

Afr. J. Environ. Sci. Technol.

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“…The fact that the goat manure promoted growth of Urochloa decumbens leads to a paradox in relation to the use this type of manure in restoration areas. On one side, Urochloa decumbens has been widely and successfully used to promote amelioration of soil physical and chemical attributes in degraded areas in the Brazilian Cerrado (CARVALHO et al, 2015). On the other side, the development of this plant in Cerrado areas is not ecologically desirable, since it can dominate large patches of the environment, threaten native plants and jeopardize local biodiversity (PIVELLO et al, 1999), possibly causing loss of threatened species (LANNES et al, 2012).…”

Section: Discussionmentioning

confidence: 99%

Effects of animal manure upon growth of Cerrado plants

Ferreira

Viñales

Silva

et al. 2020

RICA

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Through excretion, animals return to the soil part of the nutrients they ingest. This input can be an alternative to artificial inorganic fertilization aiming at increasing soil nutrient concentrations in degraded areas that are prone to restoration. In nutrient-poor soils, the addition of animal manure can promote increases in soil fertility, but studies assessing its effects upon plant communities are meager. This study aims at checking whether the addition of manure originated from livestock promotes plant growth increase and enzyme activity in Cerrado native plants of different functional groups as a way to subsidize processes of environmental recuperation in degraded areas using organic fertilization of an easily available source, as animal manure. The experiment was conducted in a screenhouse through a completely randomized design with four manure and six species treatments with three replicates. Manure treatments used were control, cattle, sheep and goat manure. The plant species selected belonged to main Cerrado herbaceous functional groups – two naturalized grasses, two alien invasive grasses, a legume herb and a Malvaceae herb. Phosphorus and nitrogen concentrations, and N:P ratios varied according to the type of manure. Soil organic matter content, phosphorus and potassium concentrations increased upon manure addition. Different manure types promoted various effects in height, biomass and acid phosphatase activity amongst the plants. Goat and cattle manure positively influenced Urochloa decumbens, an exotic invasive grass living in the Cerrado, whereas sheep manure addition promoted increase of non-invasive grasses. These results show that animal manure can promote better nutrient conditions for plants living in degraded areas, but the selection of the manure type for application in restoration projects aiming at aiding plant growth in Cerrado degraded areas will depend on the purpose of the project because different dung types benefit different plant functional groups.

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“…These natural communities undergo several human pressures, such as the expansion agro-industry and the construction of hydroelectric power stations. The construction of dams in such areas caused the removal of the upper soil layers, having created areas where the total vegetation and part of the soil surface as well as the seed bank were mechanically removed (Carvalho et al, 2015). In the region of Ilha Solteira/SP, the removal of approximately 9 meters of the original soil profile for the construction of the dam foundation of the hydropower plant of Ilha Solteira -Usina Hidrelétrica de Ilha Solteira -effectively eliminated the vegetation of a massive area (Carvalho et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Urochloa decumbens Has Higher Mycorrhizal Colonization in Degraded than in Pristine Areas in the Brazilian Cerrado

2019

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Brazil has extensive degraded areas, where vegetation fails to establish due to harsh soil conditions. However, some invasive species such as Urochloa decumbens are successful pioneers in such areas, but the reasons deserve investigation. Mycorrhizal fungi are abundant in Cerrado soils, and their association with plants are beneficial for their establishment in natural and degraded areas. This study investigated whether arbuscular mycorrhizal colonization of native and exotic plants in the Cerrado differs between pristine and degraded areas. We collected 135 plants from four functional groups in 68 areas and determined the percentage of mycorrhizal colonization. The invasive grass Urochloa decumbens had significantly higher colonization rates in degraded than in native areas, and higher colonization than the native species. These results are important for soil management since Urochloa decumbens is widely used in early soil restoration efforts, and for nature conservation concerning the management of invasive plants in restoration areas.

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Recovery of an Oxisol Degraded by the Construction of a Hydroelectric Power Plant

Cited by 4 publications

References 32 publications

Spatial analysis of soil physical attributes from a degraded area under different types of management

Spatial analysis of soil physical attributes from a degraded area under different types of management

Effects of animal manure upon growth of Cerrado plants

Urochloa decumbens Has Higher Mycorrhizal Colonization in Degraded than in Pristine Areas in the Brazilian Cerrado

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