Soil microbial biomass and activity under natural and regenerated forests and conventional sugarcane plantations in Brazil

Silva, Danielle Karla Alves da; Freitas, Nicácio de Oliveira; Souza, Renata Gomes de; Silva, Fábio Sérgio Barbosa da; Araújo, Ademir Sérgio Ferreira de; Maia, Leonor Costa

doi:10.1016/j.geoderma.2012.06.014

Cited by 65 publications

(34 citation statements)

References 31 publications

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“…Soil microbial biomass C differed seasonally, and this pattern may be attributed to different soil humidity (Silva et al, 2012) or temperature (Rodrigues et al, 2015). During both seasons, the undisturbed Cerrado sensu stricto showed higher soil microbial biomass.…”

Section: Discussionmentioning

confidence: 98%

Biological properties of disturbed and undisturbed Cerrado sensu stricto from Northeast Brazil

et al. 2017

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The aim of this study was to measure soil microbial biomass and soil surface fauna in undisturbed and disturbed Cerrado sensu stricto (Css) from Sete Cidades National Park, Northeast Brazil. The following sites were sampled under Cerrado sensu stricto (Css) at the park: undisturbed and disturbed Css (slash-and-burn agricultural practices). Total organic and microbial biomass C were higher in undisturbed than in disturbed sites in both seasons. However, microbial biomass C was higher in the wet than in the dry season. Soil respiration did not vary among sites but was higher in the wet than in the dry season. The densities of Araneae, Coleoptera, and Orthoptera were higher in the undisturbed site, whereas the densities of Formicidae were higher in the disturbed site. Non-metric multidimensional scaling analysis separated undisturbed from disturbed sites according to soil biological properties. Disturbance by agricultural practices, such as slash-and-burn, probably resulted in the deterioration of the biological properties of soil under native Cerrado sensu stricto in the Sete Cidades National Park.Keywords: soil microbial biomass, soil fauna, sustainability, soil disturbance. Propriedades biológicas de Cerrado sensu stricto preservado e não preservado do Nordeste do BrasilResumo O objetivo do estudo foi avaliar as propriedades biológicas do solo em área de Cerrado sensu stricto preservadas e não preservadas do Parque Nacional de Sete Cidades, Nordeste do Brasil. Os seguintes sites sob Cerrado sensu stricto (Css) foram avaliados: preservado (UND) e não preservado (DIS). O C orgânico total e da biomassa microbiana foram maiores na área preservada do que na não preservada em ambas estações seca e chuvosa. Entretanto, o C da biomassa microbiana foi maior na estação chuvosa do que na seca. A respiração do solo não variou entre as áreas, mas foi maior na estação chuvosa. As densidades de Araneae, Coleoptera e Ortoptera foram maiores na área preservada, enquanto as densidades de Formicidae foram maiores na área não preservada. A analise de escalonamento não-métrico separou a área preservada da não-preservada de acordo com as propriedades biológicas. Os distúrbios no solo pelas atividades agrícolas, como corte-e-queima, resultaram na deterioração das propriedades biológicas do Cerrado nativo no Parque Nacional de Sete Cidades.Palavras-chave: biomassa microbiana do solo, fauna do solo, sustentabilidade, distúrbio no solo.

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Section: Discussionmentioning

confidence: 98%

Biological properties of disturbed and undisturbed Cerrado sensu stricto from Northeast Brazil

et al. 2017

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“…The restoration process involves the use of conservation practices, such as building terraces for water storage and the sowing of plant species, such as grasses and legumes. Previous studies found increasing vegetation cover to improve the chemical and physical properties of soils (Silva et al ., ; Trabaquini et al ., ) as well as soil microbial biomass and enzyme activity (Nunes et al ., ; Wu et al ., ).…”

Section: Introductionmentioning

confidence: 99%

Soil Surface‐Active Fauna in Degraded and Restored Lands of Northeast Brazil

et al. 2013

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Land degradation reducing vegetation cover may affect the soil surface-active fauna because both aboveground and belowground invertebrates depend on complex plant communities. In this study, we evaluated the effect of land degradation and restoration on soil fauna in northeast Brazil. Sites differed in degradation status: native vegetation, moderately degraded land, highly degraded land, and land under restoration for 4 years. Araneae and Coleoptera densities were significantly higher in natural vegetation and restored land (8 ± 4 ind./trap and 41 ± 21 ind./trap, respectively) than in degraded lands (À73% and À81%, respectively). The density of Formicidae was significantly higher in natural vegetation (206 ± 181 ind./trap) than in highly degraded land (32 ± 24 ind./trap), while restored land (51 ± 10 ind./trap) and moderately degraded land (37 ± 14 ind./trap) did not differ significantly from the other degradation levels. The density of Orthoptera did not follow the aforementioned patterns, while invertebrate groups mostly had highest densities in natural land and restored land. Linear regressions showed a strong negative relation between faunal density and soil bulk density, and a positive relation with soil organic matter due to an increase in plant cover. Our results indicate that land degradation simplifies soil surface-active invertebrate communities with pronounced decreases in the density of Araneae, Coleoptera, and Formicidae, but that land restoration practices may recover the density of soil fauna even after only 4 years. Araneae, Coleoptera, and Formicidae respond sensitively to land degradation and restoration practice and are suggested as indicator groups for restoration success.

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“…The focus of other studies has been on changes caused by land use conversion on chemical properties (Mcgrath et al, 2001;Braz et al, 2013), soil C stocks and dynamics Araújo et al, 2011;van Straaten et al, 2015), changes in the quantity and quality of shoot biomass (Fearnside and Barbosa, 1998;Lohbeck et al, 2015), emission of greenhouse gases through burning of forests and/or pastures (Fearnside, 2002;Fujisaki et al, 2015), soil biological activity (Silva et al, 2012;Rodrigues et al, 2013;Cram et al, 2015), reduction in ecosystem services , and negative impacts on the invertebrate communities .…”

Section: Introductionmentioning

confidence: 99%

Characterization and Classification of Soils under Forest and Pasture in an Agroextractivist Project in Eastern Amazonia

Zenero

Silva

Castilho

et al. 2016

Rev. Bras. Ciênc. Solo

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Knowledge of soils in the Amazon rainforest is becoming increasingly essential due to dynamics adopted by farmers that substitute forest for pastures, together with growing pressure from diverse segments of society towards adoption of sustainable production systems. The objective of this study was to characterize the soils along two toposequences, one under forest (F) and the other under pasture (P), and to verify how the change in land use influences soil attributes, evaluating their inclusion in the Brazilian Soil Classification System (SiBCS). The soils were sampled in pits located at the summit, backslope and footslope positions for morphological, chemical, physical, and clay mineralogy analysis. The results show that the soils are chemically poor and predominately kaolinitic. Sandy and loamy sand soils are in the surface horizons, with an increase in clay content with depth. The highest values of bulk density and lowest values of macroporosity were observed in the Bt horizons due to the change from a granular structure in the surface to an angular and subangular blocky structure in these horizons. The morphological properties observed in the field are strongly influenced by the annual soil water dynamics, the parent material, and the landscape, representing diagnostic characteristics that influenced classification of the soils, such as aquic with episaturation (epirredóxico), saprolitic, and gravelly. These diagnostic characteristics in the Argissolo Amarelo (Hapludults) are important morphological properties that have not been highlighted by the current edition of the SiBCS.

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Soil microbial biomass and activity under natural and regenerated forests and conventional sugarcane plantations in Brazil

Cited by 65 publications

References 31 publications

Biological properties of disturbed and undisturbed Cerrado sensu stricto from Northeast Brazil

Biological properties of disturbed and undisturbed Cerrado sensu stricto from Northeast Brazil

Soil Surface‐Active Fauna in Degraded and Restored Lands of Northeast Brazil

Characterization and Classification of Soils under Forest and Pasture in an Agroextractivist Project in Eastern Amazonia

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