Atributos Edáficos e de Termiteiros de Cupim-de-Montículo (Isoptera: Termitidae) em Pinheiral-RJ

Pinheiro, Liane Barreto Alves; Pereira, Marcos Gervásio; Lima, Eduardo; Correia, Maria Elizabeth Fernandes; Silva, Cristiane Figueira da; Ebeling, Adierson Gilvani

doi:10.4322/floram.2013.047

Cited by 5 publications

(13 citation statements)

References 26 publications

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“…However, we observed a significant difference (P < 0.05) between mound sections and the adjacent soil at both sampling distances (0.50 and 1.50 m from the base), which were statistically similar to each other (Table 4). The values observed in the mounds were similar to those observed by Pinheiro et al (2013) in a hilly landscape in spring. In summer, autumn, and winter, these authors observed a decrease in the values in mound sections, which equaled those of the adjacent soil in summer and winter.…”

Section: Chemical Fractionation Of the Soil Organic Matter (Som)supporting

confidence: 74%

“…Following the same pattern observed in the fulvic and humic fractions, the values in mounds differed from the adjacent soil at both depths and distances (P < 0.05). In the study by Pinheiro et al (2013) the values of humin fraction in the mounds in all seasons were higher than those observed in the present study, varying from 42.86 g kg -1 (autumn) to 68.06 g kg -1 (winter), whereas the values of the adjacent soil were more similar to those of the present study.…”

Section: Chemical Fractionation Of the Soil Organic Matter (Som)contrasting

confidence: 52%

“…In summer, autumn, and winter, these authors observed a decrease in the values in mound sections, which equaled those of the adjacent soil in summer and winter. The values observed in the soil by Pinheiro et al (2013) were smaller than ours, especially at 0.50 m from the mound.…”

Section: Chemical Fractionation Of the Soil Organic Matter (Som)contrasting

confidence: 43%

“…This pattern was observed by other authors who studied the mound and adjacent soil in pastures (Pinheiro et al, 2013) and soils under different management regime (Fontana et al, 2006). The stable fractions of the SOM, denominated humic fractions, can be viewed as products of chemical and biological transformations of plant and animal matter, as well as of the activity of soil microorganisms (Primo et al, 2011), and they were considered indicators of processes and degree of humification of the SOM (Nascimento et al, 2010).…”

Section: Chemical Fractionation Of the Soil Organic Matter (Som)mentioning

confidence: 76%

“…These authors considered a mound subdivided in top, center, and base and compared it to the adjacent soil within a radius of 1.5 m from the base of the epigeal mound. Pinheiro et al (2013) also carried out studies considering mound sections and assessed the chemical and biological properties of the material, but they did not report the distance from the base of the epigeal mound where they sampled the soil. In spite of the differences in the properties assessed, as well as in the distance from the base of the mound where samples were collected, all authors reported differences between the mound and the surrounding soil.…”

Section: Introductionmentioning

confidence: 99%

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Soil Physical and Chemical Properties in Epigeal Termite Mounds in Pastures

et al. 2018

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We characterized soil physical and chemical properties and soil organic matter in epigeal termite mounds in pastures to evaluate the changes promoted by termites in comparison to an adjacent area. We selected seven active epigeal termite mounds in the municipality of Seropédica, state of Rio de Janeiro, Brazil. Soil samples were collected from top, center and base positions of each mound, at 0.50 and 1.50 m distance from the base of the mound. We identified individuals of the genus Embiratermes, Velocitermes, and Orthognathotermes. The humin fraction predominated over the humic and fulvic acid fractions both in mounds and adjacent soil. The amount of organic matter and the mineral fractions (mineral-associated organic carbon -MOC) varied among builder species. The studied chemical attributes point to a higher concentration of nutrients in the mounds than in the adjacent soil.

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Section: Chemical Fractionation Of the Soil Organic Matter (Som)supporting

confidence: 74%

Section: Chemical Fractionation Of the Soil Organic Matter (Som)contrasting

confidence: 52%

Section: Chemical Fractionation Of the Soil Organic Matter (Som)contrasting

confidence: 43%

Section: Chemical Fractionation Of the Soil Organic Matter (Som)mentioning

confidence: 76%

Section: Introductionmentioning

confidence: 99%

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Soil Physical and Chemical Properties in Epigeal Termite Mounds in Pastures

et al. 2018

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Characterization of Organic Matter under Different Pedoenvironments in the Viruá National Park, in Northern Amazon

Vale

Nicodem

Melo

et al. 2016

Rev. Bras. Ciênc. Solo

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Soil organic matter (SOM) fractions result from a variety of environmental processes, which affect incorporation and production rates, decomposition, alteration, and/or mineralization of organic matter. The aim of this study was to characterize SOM under the environments of rain forest, wooded campinarana (grasslands), arboreal-shrubby campinarana, grassy-woody campinarana, and pioneer plants of the Viruá National Park, in the north of the Brazilian Amazon. After chemical and physical characterization and soil classification, total organic carbon (TOC), total N, microbial activity, organic C from fulvic acid fractions (FA), humic acid (HA), and humin (Hu) were determined at two depths (0.00-0.15 and 0.15-0.30 m). The TOC was lower in the grassy-woody campinarana, arboreal-shrubby campinarana, and pioneer formation areas than in the rain forest. Higher values of microbial activity were related to forest ecosystems in soils without physical or water restrictions and with better fertility compared to the other areas. The Hu predominated in all vegetation types studied, especially in the surface layer, because of the more soluble nature of HA and FA; and the higher values of HA/FA ratios in wooded campinaranas indicate that these environments contribute to higher losses of humic substances through fulvic acid forms, due to better drainage conditions.

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Termite Mounds Effects on Soil Properties in the Atlantic Forest Biome

Lima

Pereira

et al. 2018

Rev. Bras. Ciênc. Solo

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ABSTRACT:Termites have peculiar activities in the soil, inducing significant changes in the soil properties. The objective of this study was to assess physical and chemical properties and soil organic matter to evaluate the effect of termite activity and termite mounds on the soil. Two toposequences were selected and divided in slope thirds (shoulder, backslope, and footslope). In each of these, four termite mounds were selected. Samples were taken from the soils and termite mounds (top, center, and base) along with a variety of termites for identification. Analyses were carried out for physical, soil texture, and chemical properties, as well as for particle size and chemical fractioning of organic matter. The species Cornitermes cumulans was found in all mounds. Soil with termite mound presented higher clay content, acidity, and Al 3+ content. Phosphorus contents differed considerably between mound material and soil. Sum of bases and cation exchange capacity of the soil were higher in mounds, and differed within the mounds, according to the sampling height. Total organic carbon and particulate carbon content were highest at the mound base. A marked disparity was observed between the contents of humic substances in the mounds and surrounding soil, with humin fraction differences in distinct topographic position. The high nutrient contents detected in the termite mounds confirm the importance of termites in concentrating nutrients.

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Atributos Edáficos e de Termiteiros de Cupim-de-Montículo (Isoptera: Termitidae) em Pinheiral-RJ

Cited by 5 publications

References 26 publications

Soil Physical and Chemical Properties in Epigeal Termite Mounds in Pastures

Soil Physical and Chemical Properties in Epigeal Termite Mounds in Pastures

Characterization of Organic Matter under Different Pedoenvironments in the Viruá National Park, in Northern Amazon

Termite Mounds Effects on Soil Properties in the Atlantic Forest Biome

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