Dehydrogenase activity in Mediterranean forest soils

Quilchano, Consuelo; Marañón, Teodoro

doi:10.1007/s00374-002-0446-8

Cited by 166 publications

(87 citation statements)

References 20 publications

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“…The positive correlation of these parameters with soil water content suggests that this factor might be the major responsible of the microbial activity seasonal variation. Other studies performed in Mediterranean forest soils also attributed the increased microbial activity to higher water content [5,40]. The exception to this pattern occurred with the nitrification rate, which presented higher rate values in spring.…”

Section: Discussionmentioning

confidence: 84%

Influence of seasons and land-use practices on soil microbial activity and metabolic diversity in the “Montado ecosystem”

Costa¹,

Freitas²,

Sousa³

2013

European Journal of Soil Biology

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a b s t r a c tThe "Montado ecosystem" is important both economically and ecologically; this ecosystem is dominated by cork and holm oak trees (Quercus suber L. and Quercus rotundifolia Lam. respectively) combined with a rotation of crops/fallow/pastures. Diverse management strategies, deviating from the sustainable use of the ecosystem, have been implemented, from which arise some extreme situations of over-use or abandonment. To evaluate the effects of different soil use and management, namely extensive cropping, intensive pasture and abandonment, in the activity of soil microorganisms, dehydrogenase, acid phosphatase, b-glucosidase and urease activities, N-mineralization and nitrification rates were measured in different land-use practices, in different seasons (winter, spring and autumn). Also, the potential metabolic diversity was evaluated by analysis of community-level physiological profiles (CLPPs). Seasonal effects were evident with maximum activity occurring in rainy seasons (winter and autumn) and lower substrate utilization in winter. Significant correlations between most microbial parameters and soil water content reflect this seasonal effect. Although showing mainly a seasonal change, microbial parameters were able to distinguish the abandoned area, with a general low activity and differential exponential rates in the use of several substrates, such as amino acids, miscellaneous and polymers, probably associated with changes in organic matter quality.

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Section: Discussionmentioning

confidence: 84%

Influence of seasons and land-use practices on soil microbial activity and metabolic diversity in the “Montado ecosystem”

Costa¹,

Freitas²,

Sousa³

2013

European Journal of Soil Biology

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“…Portanto, o estudo da atividade enzimática tem sido reportado como indicador efetivo da qualidade do solo, da decomposição da matéria orgânica e da disponibilidade de nutrientes decorrentes das práticas de manejo ou do ambiente (QUILCHANO; MARANÓN, 2002). As enzimas de interesse na ciclagem de nutrientes são aquelas que catalisam a hidrólise de constituintes da matéria orgânica do solo (JOSHI; SHARMA; MISHRA, 1993;FIORETTO et al, 2001).…”

Section: Introductionunclassified

Atividade enzimática do solo sob sistema de produção orgânica e convencional na cultura da cana-de-açúcar em Goiás

et al. 2012

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ResumoObjetivou-se avaliar a atividade das enzimas ligadas ao ciclo do carbono, à mineralização do fósforo e atividade enzimática total do solo cultivado com cana-de-açúcar orgânica certificada com e sem revolvimento do solo, orgânica em certificação, convencional com e sem queima da palhada e uma área remanescente de Cerrado no município de Goiatuba, GO, Brasil. Foi realizada coleta de solo em março (período chuvoso) e setembro (período de estiagem) de 2009, na profundidade de 0-10 cm, para análises de matéria orgânica, pH, P, granulometria e atividade enzimática total, β-glicosidase e fosfatase ácida. Os dados foram submetidos às análises descritiva e multivariada. O sistema de produção orgânico certificado de cana-de-açúcar sem revolvimento do solo apresentou maiores níveis de atividade da β-glicosidase, indicando maior ciclagem da matéria orgânica em relação aos outros sistemas. Os maiores valores de fosfatase ácida foram observados nas coletas amostradas no período chuvoso na área remanescente de Cerrado, seguido pelo sistema de produção orgânico certificado sem revolvimento do solo. Menor atividade enzimática total foi observada no sistema que utiliza a queima da palhada antes da colheita. O solo remanescente de Cerrado seguido pelo sistema orgânico certificado de cana-de-açúcar sem revolvimento apresentaram os melhores indicadores de qualidade de solo. Palavras-chave: β-glicosidase, atividade enzimática total, manejo orgânico, mineralização do carbono, fósforo orgânico, fosfatase ácida AbstractThis work aimed to evaluate the activity of enzymes related with the carbon cycle, P mineralization and total enzymatic activity of soil cultivated with certified organic sugarcane with and without soil tillage, organic sugarcane under certification, conventional sugarcane with and without residue burning and a remaining area of Cerrado in Goiatuba, GO, Brazil. Soil samples were collected in March (summer) and in September (winter) 2009 from 0-10 cm depth for analysis of organic matter, pH, P, granulometry, total enzymatic activity, β-glucosidase and acid phosphatase. Data were subjected to descriptive and multivariate analyses. The certified organic management of sugarcane without soil tillage had higher levels of β-glucosidase activity, indicating increased cycling of organic matter in relation to other systems. The highest values of acid phosphatase were observed in the samples collected from the remaining area of Cerrado in the summer, followed by the certified organic management without soil 1 Engº Agrº, Consultor do SEBRAE/GO,

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“…Soil organic matter is considered an important indicator of soil quality due to its nutrient sink character and being a source that can enhance soil physical and chemical properties and promote biological activity (Jimenez et al 2002). Quilchano and Maranón (2002) reported that differences in plant species composition and soil properties could be responsible for variability in dehydrogenase. The authors found that this enzyme activity was positively and significantly correlated with soil pH but not with total soil C and N. The above statement supports the results of this study, i.e.…”

Section: Discussion Of Resultsmentioning

confidence: 99%

Biological and biochemical properties in evaluation of forest soil quality

Błońska

Lasota

2014

Folia Forestalia Polonica

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The aim of this study was to assess the possibility of using biological and biochemical parameters in the evaluation of forest soil quality and changes caused by land use. The study attempted to determine a relationship between the enzymatic activity of soil, the number of earthworms and soil physico-chemical properties. The study was carried out in central Poland in adjoining Forest Districts (Przedbórz and Smardzewice). In soil samples taken from 12 research plots, basic physico-chemical properties, enzyme activity (dehydrogenase, urease) and density and biomass of earthworms were examined. Enzyme activity showed a large diversity within the forest site types studied. The correlations between the activity of the enzymes studied and C/N ratio indicated considerable importance of these enzymes in metabolism of essential elements of organic matter of forest soils. Urease and dehydrogenase activity and earthworm number showed susceptibility to soil pH, which confirmed relationships between enzyme activity and abundance of earthworms and soil pH in H 2 O and KCl.

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Dehydrogenase activity in Mediterranean forest soils

Cited by 166 publications

References 20 publications

Influence of seasons and land-use practices on soil microbial activity and metabolic diversity in the “Montado ecosystem”

Influence of seasons and land-use practices on soil microbial activity and metabolic diversity in the “Montado ecosystem”

Atividade enzimática do solo sob sistema de produção orgânica e convencional na cultura da cana-de-açúcar em Goiás

Biological and biochemical properties in evaluation of forest soil quality

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