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Towards the development of multifunctional molecular indicators combining soil biogeochemical and microbiological variables to predict the ecological integrity of silvicultural practices.

Peck V, Quiza L, Buffet JP, Khdhiri M, Durand AA, Paquette A, Thiffault N, Messier C, Beaulieu N, Guertin C, Constant P - Microb Biotechnol (2016)

Bottom Line: Analysis of soil nutrients, abundance of bacteria and gas exchanges unveiled no significant difference among the plots.However, inverting site preparation resulted in higher variations of gas exchanges when compared with trenching, mounding and unlogged natural forest.According to this classification model, simple trenching was the approach that represented the lowest ecological risk potential at the microsite level.

View Article: PubMed Central - PubMed

Affiliation: INRS-Institut Armand-Frappier, 531 boulevard des Prairies, Laval, Québec, Canada, H7V 1B7.

No MeSH data available.


Related in: MedlinePlus

Coefficient of variation (CV) for gaseous exchanges. The bars represent the average and standard deviation of CV measured for H2, CO and CO2.
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mbt212348-fig-0001: Coefficient of variation (CV) for gaseous exchanges. The bars represent the average and standard deviation of CV measured for H2, CO and CO2.

Mentions: Conversion of unlogged natural forest to a hybrid larch plantation caused no significant change in measured soil physicochemical properties at the microsite level (Table 1). Soil carbon and nitrogen concentrations were significantly and positively correlated (Pearson, P < 0.0001) and C:N stoichiometry ranged from 18 to 32 among samples. All tested soil represented a net sink for H2 and CO and net source for CO2 (Table 1). Even though gaseous exchanges were not affected by MSP procedures, some treatments induced high variations between replicates. In general, the coefficient of variation (CV) of gas exchanges increased as a function of the intensification of the MSP techniques (Fig. 1). For instance, H2, CO and CO2 exchanges measured in soil samples collected in excavated mounds displayed CV ranging from 58% to 62% while the same variables measured in unlogged natural forest samples were characterized by CV of 7–32%. Trace gas turnover showed no significant relationship with soil carbon and nitrogen concentrations (Pearson, P > 0.05) but a negative correlation was observed between soil respiration and pH (Pearson, P = 0.03). H2 uptake rates increased as function of CO uptake (Pearson, P < 0.0001) and CO2 production (Pearson, P = 0.02) activities. CO2 production rates were not related to measured CO uptake activities (Pearson, P > 0.05). The abundance of bacteria was proportional to CO2 production rate in soil (Pearson, P = 0.01).


Towards the development of multifunctional molecular indicators combining soil biogeochemical and microbiological variables to predict the ecological integrity of silvicultural practices.

Peck V, Quiza L, Buffet JP, Khdhiri M, Durand AA, Paquette A, Thiffault N, Messier C, Beaulieu N, Guertin C, Constant P - Microb Biotechnol (2016)

Coefficient of variation (CV) for gaseous exchanges. The bars represent the average and standard deviation of CV measured for H2, CO and CO2.
© Copyright Policy - creativeCommonsBy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4835570&req=5

mbt212348-fig-0001: Coefficient of variation (CV) for gaseous exchanges. The bars represent the average and standard deviation of CV measured for H2, CO and CO2.
Mentions: Conversion of unlogged natural forest to a hybrid larch plantation caused no significant change in measured soil physicochemical properties at the microsite level (Table 1). Soil carbon and nitrogen concentrations were significantly and positively correlated (Pearson, P < 0.0001) and C:N stoichiometry ranged from 18 to 32 among samples. All tested soil represented a net sink for H2 and CO and net source for CO2 (Table 1). Even though gaseous exchanges were not affected by MSP procedures, some treatments induced high variations between replicates. In general, the coefficient of variation (CV) of gas exchanges increased as a function of the intensification of the MSP techniques (Fig. 1). For instance, H2, CO and CO2 exchanges measured in soil samples collected in excavated mounds displayed CV ranging from 58% to 62% while the same variables measured in unlogged natural forest samples were characterized by CV of 7–32%. Trace gas turnover showed no significant relationship with soil carbon and nitrogen concentrations (Pearson, P > 0.05) but a negative correlation was observed between soil respiration and pH (Pearson, P = 0.03). H2 uptake rates increased as function of CO uptake (Pearson, P < 0.0001) and CO2 production (Pearson, P = 0.02) activities. CO2 production rates were not related to measured CO uptake activities (Pearson, P > 0.05). The abundance of bacteria was proportional to CO2 production rate in soil (Pearson, P = 0.01).

Bottom Line: Analysis of soil nutrients, abundance of bacteria and gas exchanges unveiled no significant difference among the plots.However, inverting site preparation resulted in higher variations of gas exchanges when compared with trenching, mounding and unlogged natural forest.According to this classification model, simple trenching was the approach that represented the lowest ecological risk potential at the microsite level.

View Article: PubMed Central - PubMed

Affiliation: INRS-Institut Armand-Frappier, 531 boulevard des Prairies, Laval, Québec, Canada, H7V 1B7.

No MeSH data available.


Related in: MedlinePlus