Soil enzyme and microbial activities in a grazing ecosystem of Patagonian Monte, Argentina

Prieto, Luciano Hernan; Bertiller, Mónica B.; Carrera, Analía Lorena; Olivera, Nelda Lila

doi:10.1016/j.geoderma.2011.02.011

Cited by 84 publications

(79 citation statements)

References 64 publications

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“…In addition, our results support a previous study showing that microbial activities in soils with plant cover were higher than those of open areas (Prieto et al 2011). Another study also found that microbial community structure varied with vegetation type (Chang et al 2011).…”

Section: Soil Microbial Communitysupporting

confidence: 91%

Rhizosphere soil enzymatic and microbial activities in bamboo forests in southeastern China

Chen

et al. 2014

Soil Science and Plant Nutrition

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Bamboo has been introduced to coastal sandy areas in southeastern China to protect and restore coastal ecosystems. An understanding of the chemistries and enzymatic and microbial activities in the soils of these bamboo forests will aid our understanding of how bamboo plantations can improve soil fertility and will provide scientific evidence for policy makers for encouraging the planting of bamboo in other coastal areas. We investigated the physical and chemical properties of the rhizosphere soil [soil moisture content (SMC), pH, and contents of soil organic matter (SOM), total nitrogen (TN), available nitrogen (AN), total phosphorus (TP), available phosphorus (AP), total potassium (TK) and available potassium (AK)], enzymatic activities (sucrase, protease, urease and catalase) and microbial properties (counts of bacteria, fungi and actinomycetes) in five bamboo forests. The bamboo forests had significantly higher levels of SOM, TN, AN, TP, AP, TK, and AK and lower pH relative to a control soil sample from an area devoid of plants. Soil enzymatic activities and microbial communities were considerably higher in the bamboo forests than in the soil from the barren land. The chemical contents, enzymatic activities and microbial counts of the soil and the litter and root biomasses were higher in forests with the bamboo species Dendrocalamopsis oldhami and Pseudosasa amabilis than in forests with the other three species (Acidosasa edulis, Dendrocalamopsis vario-striata, and Dendrocalamopsis beecheyana var. pubescens), which suggests that these two species could adapt to sandy soil and grow well in a hostile environment. These results indicate that planting bamboo may help to both enrich soil fertility and increase the diversity of tree species in coastal ecosystems. The difference between aboveground and belowground biomass may have been responsible for these changes in soil properties.

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Section: Soil Microbial Communitysupporting

confidence: 91%

Rhizosphere soil enzymatic and microbial activities in bamboo forests in southeastern China

Chen

et al. 2014

Soil Science and Plant Nutrition

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“…Analisando a influência do pastejo na atividade biológica do solo, Prieto et al (2011) registraram declínio na atividade da β-glicosidase em reposta à redução da cobertura vegetal das gramíneas perenes estudadas, em razão do pastejo. Nesse estudo, entretanto, é possível que o pastejo não tenha ocasionado a redução da cobertura vegetal em nível capaz de influenciar a atividade da enzima em questão, mantendo-se todas as áreas no mesmo padrão de atividade e sem apresentar resposta ao uso de dejetos de suínos no solo.…”

Section: Resultsunclassified

Indicadores Microbiológicos de Solo em Pastagem com Aplicação Sucessiva de Dejetos De Suínos

Silva

Antoniolli²,

Jacques³

et al. 2015

Rev. Bras. Ciênc. Solo

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RESUMO O uso de dejetos líquidos de suínos como fertilizante do solo é uma prática comum na Região Sul do Brasil. Apesar de ter benefícios na reutilização dos dejetos, essa prática apresenta sérios riscos ambientais. Os indicadores microbiológicos de qualidade do solo são bastante sensíveis e permitem o monitoramento das condições do ambiente edáfico. Objetivou-se avaliar a qualidade microbiológica do solo de pastagens com diferentes históricos de uso sucessivo de dejetos líquidos de suínos. Determinaram-se o teor de C da biomassa microbiana, a respiração microbiana do solo, o quociente metabólico (qCO2) e a atividade das enzimas β-glicosidase, urease e hidrólise do diacetato de fluoresceína (FDA), em áreas de pastagem com uso de dejetos de suínos há dois anos (A2) e 14 anos (A14) e em área com mata nativa (MN). O uso sucessivo de dejetos de suínos em pastagem não influenciou o C da biomassa e a respiração microbiana do solo, que variaram conforme a época de coleta. O qCO2 não foi influenciado pelo uso de dejetos de suínos no solo; a atividade enzimática do solo foi influenciada pelo uso de dejetos de suínos, sendo que a urease e a FDA foram sensíveis na detecção de diferenças na atividade dos solos com uso de dejetos de suínos, enquanto a β-glicosidase não permitiu a diferenciação entre as áreas estudadas.

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“…En effet, certaines études ont montré qu'à court terme le pâturage n'a pas d'effet significatif sur les teneurs en carbone total et en azote total même si on peut observer une légère diminution de la matière organique du sol (Silveira et al, 2013). Cependant, à long terme, le pâturage diminue les teneurs en carbone et en azote totaux du sol (Han et al, 2008;Prieto et al, 2011). Par ailleurs, il semblerait qu'une forte intensité de pâturage stimule la nitrification, et que la dénitrification augmente sous une faible intensité de pâturage (Le Roux et al, 2003) ce qui devrait à long terme affecter les teneurs en nitrate et en ammonium du sol.…”

Section: Discussionunclassified

“…Par ailleurs, il semblerait qu'une forte intensité de pâturage stimule la nitrification, et que la dénitrification augmente sous une faible intensité de pâturage (Le Roux et al, 2003) ce qui devrait à long terme affecter les teneurs en nitrate et en ammonium du sol. Une augmentation du pH et de la densité du sol a aussi été observée avec l'augmentation de l'intensité du pâturage due principalement aux apports d'urine et au piétinement (Prieto et al, 2011).…”

Section: Discussionunclassified

Effets du pâturage sur la biomasse herbacée et sur des paramètres chimiques et biologiques des sols dans une savane arbustive au Burkina Faso

Yé¹,

Lata²,

Massé³

et al. 2017

Int. J. Bio. Chem. Sci

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RESUMECette étude a porté sur les sols et la végétation herbacée d'une savane pâturée au Burkina Faso. Elle décrit les effets du pâturage sur la biomasse herbacée et sur les paramètres chimiques et biologiques des sols. Pour ce faire, des couples de parcelles (protégées et non protégées du pâturage) ont été installés dans les faciès des quatre espèces de graminées dominantes : deux pérennes (A. ascinodis, A. gayanus) et deux annuelles (A. pseudapricus et L. togoensis) afin de tester les effets du pâturage. En plus de la mesure de la biomasse végétale, une évaluation des caractéristiques chimiques et biologiques des sols a aussi été effectuée. Les pH eau et pH KCl, l'ammonium, le nitrate, la respiration basale, la bêta-glucosidase et la fluorescéine di-acétate des sols sont plus élevées sous les pérennes (A. ascinodis et A. gayanus), que sous les annuelles (A. pseudapricus et L. togoensis) et le sol nu. Le carbone total, l'azote total, le phosphore assimilable, le C/N, la biomasse microbienne et la phosphatase acide sont plus élevés sous la pérenne A. ascinodis que sous les autres espèces et le sol nu. Les résultats indiquent que le pâturage diminue significativement la biomasse aérienne sans affecter la biomasse racinaire. Par ailleurs, il n'y a pas d'effet significatif sur les paramètres chimiques et biologiques, excepté pour la respiration basale du sol qui augmente significativement en situation de non pâturage. On a donc obtenu en 18 mois d'exclos peu d'effets sur le fonctionnement du sol mais d'importants effets sur les biomasses herbacées.

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Soil enzyme and microbial activities in a grazing ecosystem of Patagonian Monte, Argentina

Cited by 84 publications

References 64 publications

Rhizosphere soil enzymatic and microbial activities in bamboo forests in southeastern China

Rhizosphere soil enzymatic and microbial activities in bamboo forests in southeastern China

Indicadores Microbiológicos de Solo em Pastagem com Aplicação Sucessiva de Dejetos De Suínos

Effets du pâturage sur la biomasse herbacée et sur des paramètres chimiques et biologiques des sols dans une savane arbustive au Burkina Faso

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