Recovery of soil microbiological properties in a degraded area planted with Corymbia citriodora and Leucaena leucocephala

Valpassos, Maria Alexandra Reis; Maltoni, Kátia Luciene; Cassiolato, Ana Maria Rodrigues; Nahas, Ely

doi:10.1590/s0103-90162007000100010

Cited by 9 publications

(9 citation statements)

References 26 publications

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“…The soils may be considered strongly acidic, given the pH varied on average from 4Á1 to 4Á6 (Table 1). These results were similar to others reported, from 3Á1 to 5Á5 in mangrove (Effiong and Ayolagha 2010), 3Á7 to 4Á7 in restinga (Gomes et al 2007) and 4Á5 to 4Á6 in the Atlantic forest soils (Valpassos et al 2007). The organic matter content of restinga, mangrove and Atlantic forest soils was 4Á3, 32Á7 and 41Á0 g kg À1 (Table 1), considered arbitrarily very low, medium and high, respectively.…”

Section: Micro-organism Populationssupporting

confidence: 92%

“…) and 30·3 g kg −1 in the Atlantic Forest soils (Valpassos et al . ), both from Brazil, have been found. These characteristics, together with the biological activity of plant species, can control the composition and activity of microbial communities, determining their conditions of survival and growth (Agnelli et al .…”

Section: Discussionmentioning

confidence: 92%

“…) and 4·5 to 4·6 in the Atlantic forest soils (Valpassos et al . ). The organic matter content of restinga, mangrove and Atlantic forest soils was 4·3, 32·7 and 41·0 g kg −1 (Table ), considered arbitrarily very low, medium and high, respectively.…”

Section: Discussionmentioning

confidence: 97%

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Microbial populations and activities of mangrove, restinga and Atlantic forest soils from Cardoso Island, Brazil

Pupin

Nahas

2014

J Appl Microbiol

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Aim: Mangroves provide a distinctive ecological environment that differentiates them from other ecosystems. This study deal to evaluate the frequency of microbial groups and the metabolic activities of bacteria and fungi isolated from mangrove, restinga and Atlantic forest soils. Methods and Results: Soil samples were collected during the summer and winter at depths of 0-2, 2-5 and 5-10 cm. Except for fungi, the counts of the total, sporulating, Gram-negative, actinomycetes, nitrifying and denitrifying bacteria decreased significantly in the following order: Atlantic forest > mangrove > restinga. The counts of micro-organisms decreased by 11 and 21% from the surface to the 2-5 and 5-10 cm layers, but denitrifying bacteria increased by 44 and 166%, respectively. A larger growth of micro-organisms was verified in the summer compared with the winter, except for actinomycetes and fungi. The average frequency of bacteria isolated from mangrove, restinga and Atlantic forest soils was 95, 77 and 78%, and 93, 90 and 95% for fungi, respectively. Bacteria were amylolytic (33%), producers of acid phosphatase (79%) and solubilizers (18%) of inorganic phosphate. The proportions of fungi were 19, 90 and 27%. Conclusion: The mangrove soil studied had higher chemical characteristics than the Atlantic forest, but the high salinity may have restricted the growth of microbial populations. Significance and Impact of the Study: Estimates of the microbial counts and activities were important to elucidate the differences of mangrove ecosystem from restinga and Atlantic forest.

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Section: Micro-organism Populationssupporting

confidence: 92%

Section: Discussionmentioning

confidence: 92%

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Microbial populations and activities of mangrove, restinga and Atlantic forest soils from Cardoso Island, Brazil

Pupin

Nahas

2014

J Appl Microbiol

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“…Larger populations of microbial communities implied the more active biogeochemical cycles beneath Leucaena leucocephala (Table 3). Valpassos et al (2007) made a similar comparison in an Atlantic forest in which they found that the microbial populations (bacteria, fungi, actinomycetes) in Leucaena leucocephala soil were significantly higher than was determined for bare soil. They attributed this result to different amounts of total organic C. In our study, BCP, ACP and TCP were closely related to organic matter, N and P content (Table 5), so we can see these parameters of the soil interacted with each other.…”

Section: Discussionmentioning

confidence: 95%

Effects of vegetation restoration types on soil quality in Yuanmou dry-hot valley, China

Peng

Chen

Fang

et al. 2013

Soil Science and Plant Nutrition

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Soil erosion has resulted in serious land degradation in Yuanmou dry-hot valley, Yunnan province, China. Vegetation restoration had been widely developed in this hot and arid area. In this work we investigate the quality of rhizosphere soils under four restoration species in the towns of Zuolin (gully bed) and Yuanma (slope area). [pH, soil organic matter, nitrogen (N), phosphorus (P) and potassium (K) contents], and microbial (microbial biomass and microbe quantity) properties and soil enzyme (catalase, protease and urease) activities were determined. Compared to the soils collected from other vegetation types, the soil under Leucaena leucocephala had the highest content of soil organic matter, total N, available N, total P, available P, available K, microbial biomass carbon (C), and the highest microbe quantity and enzyme activities. Five parameters (organic matter, pH, microbial biomass N, total K and protease activity), which had the greatest weight in the principal components analysis, were selected to calculate the soil quality index (SQI). The final SQI values implied that restoring Leucaena leucocephala greatly improved the soil quality, while restoration with Eucalyptus camaldulensis decreased the soil quality of the slope area. Plant recovery with Dodonaea viscosa and Heteropogon contortus on the gully bed affected the population of soil microbial communities but didn't improve the SQI values. It can therefore be seen that types of plants used for recovery in gully-developed regions in dry-hot valleys must be chosen cautiously: Leucaena leucocephala is a good choice for soil revegetation of the slope area, but the revegetation patterns on the gully bed still need further study.

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“…Em trabalho realizado por Valpassos et al (2007), foram estudados três sítios: uma área degradada que foi reflorestada com Corymbia citriodora (Hook) K. D. Hill & L. A. S. Jonhson e Leucaena leucocephala (Lam.) de Wit, um sítio onde houve a remoção da vegetação e do solo e outra área dentro da Floresta Atlântica, todas localizadas na Ilha Solteira/SP, com o objetivo de estudar a recuperação da área pela avaliação das comunidades microbianas e sua atividade.…”

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FLUTUAÇÃO DA POPULAÇÃO DE FUNGOS SOB FLORESTA OMBRÓFILA MISTA E EM POVOAMENTO DE Pinus taeda

Osaki

Netto

2012

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ResumoO presente trabalho teve como objetivo avaliar a distribuição vertical e horizontal da população de fungos numa Floresta Ombrófila Mista e num povoamento florestal com Pinus taeda , separadamente. O experimento foi realizado em Tijucas do Sul, PR. Os tratamentos constituíram-se de dois fatores, com três repetições. Para o primeiro fator, foram estudadas três profundidades: serapilheira, zona de transição e solo, e para o segundo fator foram as estações do ano (inverno e verão). A topossequência da Floresta Ombrófila Mista foi dividida em plana, meia encosta e topo, e em cada uma delas foi alocado um bloco de 10.000 m2, subdividido em cem subunidades. Foram sorteadas aleatoriamente cinco subunidades amostrais, que compuseram as amostras simples, que, sendo homogeneizadas, formaram uma unidade amostral composta por bloco. O relevo da área do povoamento florestal com pínus caracterizou-se como plano, sendo adotado o mesmo procedimento para implantação dos blocos e da coleta das unidades amostrais. A análise da população de microrganismos mostrou diferença entre as profundidades, sendo maior na serapilheira e no verão. Para o povoamento com pínus, a população de fungos não mostrou diferenças entre estações, sendo maior na serapilheira. A população de fungos foi superior na Floresta Ombrófila Mista. AbstractFungi population variation under the Subtropical Ombrophilous Forest and Pinus taeda plantation. This paper aims to evaluate vertical and horizontal distribution of fungi population in Subtropical Ombrophilous Forest and Pinus taeda plantation, separately. The experiment had been improved in the municipality of Tijucas do Sul, PR, with 2 factors and 3 replications. The evaluated factors were depth (litter, transition zone and soil) and seasons (winter and summer). The Subtropical Ombrophilous Forest toposequence was divided in plain, hillside and top, where it was placed a 10,000 m² plot; which was subdivided in one hundred subplots. It was selected five alleatory samples which composed the simple samples, and, as they were randomized, they composed one block sample unit. The P. taeda plantation exhibited a topographic sequence that was classified as plain, and the same topography was used for the following sampling. The microorganism’s population analyses revealed differences between depths, it was higher in the litter and in the summer. The fungi population presented no differences between seasons in the P. taeda plantation, it was higher in the litter. It was identified a higher fungi population in the Subtropical Ombrophilous Forest compared to the results observed in the plantation.Keywords: Pinus; microbiot; litter; soil; fertility.

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Recovery of soil microbiological properties in a degraded area planted with Corymbia citriodora and Leucaena leucocephala

Cited by 9 publications

References 26 publications

Microbial populations and activities of mangrove, restinga and Atlantic forest soils from Cardoso Island, Brazil

Microbial populations and activities of mangrove, restinga and Atlantic forest soils from Cardoso Island, Brazil

Effects of vegetation restoration types on soil quality in Yuanmou dry-hot valley, China

FLUTUAÇÃO DA POPULAÇÃO DE FUNGOS SOB FLORESTA OMBRÓFILA MISTA E EM POVOAMENTO DE Pinus taeda

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