Assessing the impact of elevated CO2 on soil microbial activity in a Mediterranean model ecosystem

1995 ◽  
Vol 187 (2) ◽  
pp. 333-342 ◽  
Author(s):  
Shivcharn S. Dhillion ◽  
Jacques Roy ◽  
Mary Abrams
Keyword(s):  
Microbial Activity ◽  
Elevated Co2 ◽  
Soil Microbial Activity ◽  
Model Ecosystem ◽  
Soil Microbial ◽  
The Impact

scholarly journals The impact of windthrow and fire disturbances on selected soil properties in the Tatra National Park

2008 ◽  
Vol 3 (Special Issue No. 1) ◽  
pp. S74-S80 ◽  
Author(s):  
E. Gömöryová ◽  
K. Střelcová ◽  
J. Škvarenina ◽  
J. Bebej ◽  
D. Gömöry
Keyword(s):  
Microbial Biomass ◽  
Microbial Activity ◽  
National Park ◽  
Soil Microbial Activity ◽  
N Mineralisation ◽  
Soil Microbial ◽  
Microbial Characteristics ◽  
Fire Disturbances ◽  
Tatra National Park ◽  
The Impact

: In November 2004, forest stands in the Tatra National Park (TANAP) were affected by windthrow and in July 2005, the wildfire broke out on a part of the affected area. The objective of this study is to evaluate the impact of the windthrow and fire disturbances on soil microbial activity. Basal and potential soil respiration, N-mineralisation, catalase activity, soil microbial biomass, and cellulase activity were measured in soil samples taken from the A-horizon (depth of 0–10 cm) along 100 m transects established on 4 plots (reference site, burnt, non-extracted, and extracted sites) in October 2006. Some soil microbial characteristics exhibited a high spatial variability, especially microbial biomass and N-mineralisation. Significant differences in soil microbial characteristics (especially basal soil respiration and catalase activity) between plots were found. Generally, the highest microbial activity was revealed on the plot affected by fire. Soil microbial activity was similar on the extracted and non-extracted sites.

scholarly journals The impact of glyphosate herbicides on soil microbial activity from the Carajás National Forest

2016 ◽  
Vol 59 (3) ◽  
pp. 302-309 ◽  
Author(s):  
Alexandre Franco Castilho ◽  
Rafael Gomes Viana ◽  
Renata Thaysa da Silva Santos ◽  
Yanna Karoline Santos da Costa ◽  
Mailson Freire Oliveira ◽  
...  
Keyword(s):  
Microbial Activity ◽  
Soil Microbial Activity ◽  
National Forest ◽  
Soil Microbial ◽  
The Impact

scholarly journals Responses of soil microbial activity to cadmium pollution and elevated CO2

2014 ◽  
Vol 4 (1) ◽  
Author(s):  
Yi Ping Chen ◽  
Qiang Liu ◽  
Yong Jun Liu ◽  
Feng An Jia ◽  
Xin Hua He
Keyword(s):  
Microbial Activity ◽  
Elevated Co2 ◽  
Soil Microbial Activity ◽  
Cadmium Pollution ◽  
Soil Microbial

scholarly journals Responses of Soil Microbial Activity to Swine Manure Applications

2020 ◽  
Vol 12 (9) ◽  
pp. 199
Author(s):  
Maria Josiane Martins ◽  
Tânia Santos Silva ◽  
Igor Paranhos Caldas ◽  
Geovane Teixeira de Azevedo ◽  
Isabelle Carolyne Cardoso ◽  
...  
Keyword(s):  
Microbial Biomass ◽  
Microbial Activity ◽  
Microbial Respiration ◽  
Swine Manure ◽  
Soil Microbial Activity ◽  
Soil Microbial ◽  
Liquid Swine Manure ◽  
Randomized Design ◽  
Set Up ◽  
The Impact

The allocation of the large amount of swine waste from farms is an international concern. An efficient way of managing such waste is its use in farming. It is already known that the incorporation of organic waste into the soil significantly increases the microbial population. Therefore, the objective was to evaluate the impact of the use of swine manure on the soil microbiota in a Eutrophic Oxisol. The experiment was set up in a completely randomized design in a 6 × 4 factorial scheme (sixconcentrations of swine manure and four evaluation periods) with four replications. We evaluate the following characteristics: microbial respiration (C-CO2), microbial biomass (µC g-1 soil) and pH.: microbial respiration (C-CO2), microbial biomass (µC g-1 soil) and pH. A significant effect was found in the interaction between concentrations and time of incubation (p < 0.05) of swine manure on microbial activity in the soil. The amount of microbial carbon increased as a function of increased levels of liquid swine manure. No interaction was observed between concentrations and time of incubation for the pH. The evaluation of the isolated factors allowed to observe that the pH decreased as the doses of manure were incremented. Higher and lower pH values were found after 5 and 30 days of incubation. The application of liquid swine manure up to 6000 L ha-1 increases the release of CO2 and carbon in the microbial biomass. The applications of liquid swine manure cause a gradual reduction in soil pH.

scholarly journals Industrial and urban organic wastes increase soil microbial activity and biomass

2012 ◽  
Vol 36 (5) ◽  
pp. 1629-1636 ◽  
Author(s):  
Cácio Luiz Boechat ◽  
Jorge Antonio Gonzaga Santos ◽  
Adriana Maria de Aguiar Accioly ◽  
Marcela Rebouças Bomfim ◽  
Adailton Conceição dos Santos
Keyword(s):  
Sewage Sludge ◽  
Microbial Activity ◽  
Pulp Mill ◽  
Soil Microbial Activity ◽  
Organic Wastes ◽  
Metabolic Quotient ◽  
Municipal Sewage Sludge ◽  
Soil Microbial ◽  
Pulp Mill Sludge ◽  
The Impact

Microbial processes have been used as indicators of soil quality, due to the high sensitivity to small changes in management to evaluate, e.g., the impact of applying organic residues to the soil. In an experiment in a completely randomized factorial design 6 x 13 + 4, (pot without soil and residue or absolute control) the effect of following organic wastes was evaluated: pulp mill sludge, petrochemical complex sludge, municipal sewage sludge, dairy factory sewage sludge, waste from pulp industry and control (soil without organic waste) after 2, 4, 6, 12, 14, 20, 28, 36, 44, 60, 74, 86, and 98 days of incubation on some soil microbial properties, with four replications. The soil microbial activity was highly sensitive to the carbon/nitrogen ratio of the organic wastes. The amount of mineralized carbon was proportional to the quantity of soil-applied carbon. The average carbon dioxide emanating from the soil with pulp mill sludge, corresponding to soil basal respiration, was 0.141 mg C-CO2 100 g-1 soil h-1. This value is 6.4 times higher than in the control, resulting in a significant increase in the metabolic quotient from 0.005 in the control to 0.025 mg C-CO2 g-1 Cmic h-1 in the soil with pulp mill sludge. The metabolic quotient in the other treatments did not differ from the control (p < 0.01), demonstrating that these organic wastes cause no disturbance in the microbial community.

scholarly journals Impact of Maize Formulated Herbicides Mesotrione and S-Metolachlor, Applied Alone and in Mixture, on Soil Microbial Communities.

ISRN Ecology ◽  
2012 ◽  
Vol 2012 ◽  
pp. 1-9 ◽  
Author(s):  
Pierre Joly ◽  
Pascale Besse-Hoggan ◽  
Frédérique Bonnemoy ◽  
Isabelle Batisson ◽  
Jacques Bohatier ◽  
...  
Keyword(s):  
Microbial Community ◽  
Microbial Communities ◽  
Microbial Activity ◽  
Synergetic Effect ◽  
Soil Microbial Communities ◽  
Soil Microbial Activity ◽  
Soil Microbial ◽  
Lower Weight ◽  
Global Soil ◽  
The Impact

In order to reduce the amounts of pesticides used, and thereby their associated risks, new generations of less environmentally dangerous molecules with lower weight are currently being used in the mixtures sprayed on crops. Few studies have been made, however, to analyse their impact on the soil, and more particularly on the microorganisms living in the soil which maintain the essential functions of this ecosystem. By taking a microcosmic approach, we were able to assess the impact of the maize herbicides “cocktail” Mesotrione and S-metolachlor on global soil microbial activity, biomass, and structures, by using the formulated compounds, respectively, Callisto and Dual Gold (both registered brands of Syngenta). Our results highlighted a synergetic effect in “cocktail” microcosms resulting in an increase in the Mesotrione herbicide dissipation time and in an impact on the microbial community at onefold field rate equally to more than a single herbicide used at tenfold field rate.

A Comparative Study on the Impact of Phthalate Esters on Soil Microbial Activity

2013 ◽  
Vol 91 (2) ◽  
pp. 217-223 ◽  
Author(s):  
Huilun Chen ◽  
Rensheng Zhuang ◽  
Jun Yao ◽  
Fei Wang ◽  
Yiguang Qian
Keyword(s):  
Comparative Study ◽  
Microbial Activity ◽  
Phthalate Esters ◽  
Soil Microbial Activity ◽  
Soil Microbial ◽  
The Impact
Sign in / Sign up

Export Citation Format

Share Document