The Experts below are selected from a list of 13833 Experts worldwide ranked by ideXlab platform

Jean-christophe Roggy - One of the best experts on this subject based on the ideXlab platform.

  • Spatial variability of the functional stability of Microbial respiration Process: a microcosm study using tropical forest Soil
    Journal of Soils and Sediments, 2012
    Co-Authors: Nathalie Fromin, Benjamin Porte, Robert Lensi, Jérôme Hamelin, Anne-marie Domenach, Bruno Buatois, Jean-christophe Roggy
    Abstract:

    Purpose Understanding the ability of ecosystem Processes to resist to and to recover from disturbances is critical to sustainable land use. However, the spatial variability of the stability has rarely been addressed. Here, we investigated the functional stability of a Soil Microbial Process for 24 Soils collected from adjacent locations from a 0.3 ha tropical rainforest plot in Paracou, French Guiana. Materials and methods The 24 locations were characterized regarding Soil chemical and biological (Microbial diversity) parameters and forest structure. The corresponding Soils were submitted to an experimental transient heat disturbance during a microcosm experiment. The response of the respiration Process was followed using substrate-induced respiration (SIR). Results and discussion The response of Soil SIR to heat disturbance varied widely between samples. The variability of the SIR response increased just after the disturbance, and a global rather homogeneous decrease in SIR rates was observed 15 and 30 days after. The stability of SIR in response to heat disturbance could not be related to either the genetic or the metabolic diversity of the Microbial community. The initial level of SIR before the disturbance was the Soil variable that best correlated with the impact of the disturbance: the Soil locations with the highest initial SIR rates were the most affected 15 and 30 days after the heat disturbance. Conclusions Such a heterogeneous response suggests that the response of Soil Processes to a disturbance will be difficult to assess from only local-scale analyses and highlights the need for spatial explicitness in understanding biogeochemical Processes.

  • spatial variability of the functional stability of Microbial respiration Process a microcosm study using tropical forest Soil
    Journal of Soils and Sediments, 2012
    Co-Authors: Nathalie Fromin, Benjamin Porte, Robert Lensi, Jérôme Hamelin, Anne-marie Domenach, Bruno Buatois, Jean-christophe Roggy
    Abstract:

    Purpose Understanding the ability of ecosystem Processes to resist to and to recover from disturbances is critical to sustainable land use. However, the spatial variability of the stability has rarely been addressed. Here, we investigated the functional stability of a Soil Microbial Process for 24 Soils collected from adjacent locations from a 0.3 ha tropical rainforest plot in Paracou, French Guiana.

  • Spatial variability of the functional stability of Microbial respiration Process: a microcosm study using tropical forest Soil
    Journal of Soils and Sediments, 2012
    Co-Authors: Nathalie Fromin, Benjamin Porte, Robert Lensi, Jérôme Hamelin, Anne-marie Domenach, Bruno Buatois, Jean-christophe Roggy
    Abstract:

    Understanding the ability of ecosystem Processes to resist to and to recover from disturbances is critical to sustainable land use. However, the spatial variability of the stability has rarely been addressed. Here, we investigated the functional stability of a Soil Microbial Process for 24 Soils collected from adjacent locations from a 0.3 ha tropical rainforest plot in Paracou, French Guiana. The 24 locations were characterized regarding Soil chemical and biological (Microbial diversity) parameters and forest structure. The corresponding Soils were submitted to an experimental transient heat disturbance during a microcosm experiment. The response of the respiration Process was followed using substrate-induced respiration (SIR). The response of Soil SIR to heat disturbance varied widely between samples. The variability of the SIR response increased just after the disturbance, and a global rather homogeneous decrease in SIR rates was observed 15 and 30 days after. The stability of SIR in response to heat disturbance could not be related to either the genetic or the metabolic diversity of the Microbial community. The initial level of SIR before the disturbance was the Soil variable that best correlated with the impact of the disturbance: the Soil locations with the highest initial SIR rates were the most affected 15 and 30 days after the heat disturbance. Such a heterogeneous response suggests that the response of Soil Processes to a disturbance will be difficult to assess from only local-scale analyses and highlights the need for spatial explicitness in understanding biogeochemical Processes.

Lijuan Chen - One of the best experts on this subject based on the ideXlab platform.

  • shifts in Soil Microbial metabolic activities and community structures along a salinity gradient of irrigation water in a typical arid region of china
    Science of The Total Environment, 2017
    Co-Authors: Yongjiu Feng, Lijuan Chen, Hang Zheng, Qi Feng, Changsheng Li, Yan Zhao, H Li
    Abstract:

    Saline water irrigation can change Soil environment, which thereby influence Soil Microbial Process. Based on a field experiment, the shifts in Soil Microbial metabolic activities and community structures under five irrigation salinities were studied using Biolog and metagenomic methods in this study. The results demonstrated that Microbial metabolic activities were greatly restrained in saline water irrigated Soils, as average well color development (AWCD) reduced under all saline water irrigation treatments. Although no significant difference in carbon substrate utilization of all six categories was observed among Mild, Medium, High and Severe treatments, the consumption of sole carbon source was significantly varied. Especially, asparagine, galacturonic, putrescine and 4-benzoic acid played a decisive role in dominating the differences. Soil bacterial richness and diversity increased with irrigation salinity while the number of bacterial phyla decreased. Three significantly increased (Proteobacteria, Actinobacteria and Chloroflexi), two decreased (Planctomycetes, Bacteroidetes) and two irresponsive (Gemmatimonadetes and Acidobacteria) phyla were observed as the dominant groups in saline water irrigated Soils. The results presented here could improve the understanding of the Soil biological Process under saline circumstance.

  • impacts of aquaculture wastewater irrigation on Soil Microbial functional diversity and community structure in arid regions
    Scientific Reports, 2017
    Co-Authors: Yongjiu Feng, Fengrui Li, Lijuan Chen, Hang Zheng, Qi Feng, Changsheng Li, Yan Zhao, Huiya Li
    Abstract:

    Aquaculture wastewater is one of the most important alternative water resources in arid regions where scarcity of fresh water is common. Irrigation with this kind of water may affect Soil Microbial functional diversity and community structure as changes of Soil environment would be significant. Here, we conducted a field sampling to investigate these effects using Biolog and metagenomic methods. The results demonstrated that irrigation with aquaculture wastewater could dramatically reduce Soil Microbial functional diversity. The values of diversity indices and sole carbon source utilization were all significantly decreased. Increased Soil salinity, especially Cl concentration, appeared primarily associated with the decreases. Differently, higher bacterial community diversity was obtained in aquaculture wastewater irrigated Soils. More abundant phyla Actinobacteria, Chloroflexi, Acidobacteria, Gemmatimonadetes and fewer members of Proteobacteria, Bacteroidetes and Planctomycetes were found in this kind of Soils. Changes in the concentration of Soil Cl mainly accounted for the shifts of bacterial community composition. This research can improve our understanding of how aquaculture wastewater irrigation changes Soil Microbial Process and as a result, be useful to manage Soil and wastewater resources in arid regions.

Nathalie Fromin - One of the best experts on this subject based on the ideXlab platform.

  • Spatial variability of the functional stability of Microbial respiration Process: a microcosm study using tropical forest Soil
    Journal of Soils and Sediments, 2012
    Co-Authors: Nathalie Fromin, Benjamin Porte, Robert Lensi, Jérôme Hamelin, Anne-marie Domenach, Bruno Buatois, Jean-christophe Roggy
    Abstract:

    Purpose Understanding the ability of ecosystem Processes to resist to and to recover from disturbances is critical to sustainable land use. However, the spatial variability of the stability has rarely been addressed. Here, we investigated the functional stability of a Soil Microbial Process for 24 Soils collected from adjacent locations from a 0.3 ha tropical rainforest plot in Paracou, French Guiana. Materials and methods The 24 locations were characterized regarding Soil chemical and biological (Microbial diversity) parameters and forest structure. The corresponding Soils were submitted to an experimental transient heat disturbance during a microcosm experiment. The response of the respiration Process was followed using substrate-induced respiration (SIR). Results and discussion The response of Soil SIR to heat disturbance varied widely between samples. The variability of the SIR response increased just after the disturbance, and a global rather homogeneous decrease in SIR rates was observed 15 and 30 days after. The stability of SIR in response to heat disturbance could not be related to either the genetic or the metabolic diversity of the Microbial community. The initial level of SIR before the disturbance was the Soil variable that best correlated with the impact of the disturbance: the Soil locations with the highest initial SIR rates were the most affected 15 and 30 days after the heat disturbance. Conclusions Such a heterogeneous response suggests that the response of Soil Processes to a disturbance will be difficult to assess from only local-scale analyses and highlights the need for spatial explicitness in understanding biogeochemical Processes.

  • spatial variability of the functional stability of Microbial respiration Process a microcosm study using tropical forest Soil
    Journal of Soils and Sediments, 2012
    Co-Authors: Nathalie Fromin, Benjamin Porte, Robert Lensi, Jérôme Hamelin, Anne-marie Domenach, Bruno Buatois, Jean-christophe Roggy
    Abstract:

    Purpose Understanding the ability of ecosystem Processes to resist to and to recover from disturbances is critical to sustainable land use. However, the spatial variability of the stability has rarely been addressed. Here, we investigated the functional stability of a Soil Microbial Process for 24 Soils collected from adjacent locations from a 0.3 ha tropical rainforest plot in Paracou, French Guiana.

  • Spatial variability of the functional stability of Microbial respiration Process: a microcosm study using tropical forest Soil
    Journal of Soils and Sediments, 2012
    Co-Authors: Nathalie Fromin, Benjamin Porte, Robert Lensi, Jérôme Hamelin, Anne-marie Domenach, Bruno Buatois, Jean-christophe Roggy
    Abstract:

    Understanding the ability of ecosystem Processes to resist to and to recover from disturbances is critical to sustainable land use. However, the spatial variability of the stability has rarely been addressed. Here, we investigated the functional stability of a Soil Microbial Process for 24 Soils collected from adjacent locations from a 0.3 ha tropical rainforest plot in Paracou, French Guiana. The 24 locations were characterized regarding Soil chemical and biological (Microbial diversity) parameters and forest structure. The corresponding Soils were submitted to an experimental transient heat disturbance during a microcosm experiment. The response of the respiration Process was followed using substrate-induced respiration (SIR). The response of Soil SIR to heat disturbance varied widely between samples. The variability of the SIR response increased just after the disturbance, and a global rather homogeneous decrease in SIR rates was observed 15 and 30 days after. The stability of SIR in response to heat disturbance could not be related to either the genetic or the metabolic diversity of the Microbial community. The initial level of SIR before the disturbance was the Soil variable that best correlated with the impact of the disturbance: the Soil locations with the highest initial SIR rates were the most affected 15 and 30 days after the heat disturbance. Such a heterogeneous response suggests that the response of Soil Processes to a disturbance will be difficult to assess from only local-scale analyses and highlights the need for spatial explicitness in understanding biogeochemical Processes.

Hang Zheng - One of the best experts on this subject based on the ideXlab platform.

  • shifts in Soil Microbial metabolic activities and community structures along a salinity gradient of irrigation water in a typical arid region of china
    Science of The Total Environment, 2017
    Co-Authors: Yongjiu Feng, Lijuan Chen, Hang Zheng, Qi Feng, Changsheng Li, Yan Zhao, H Li
    Abstract:

    Saline water irrigation can change Soil environment, which thereby influence Soil Microbial Process. Based on a field experiment, the shifts in Soil Microbial metabolic activities and community structures under five irrigation salinities were studied using Biolog and metagenomic methods in this study. The results demonstrated that Microbial metabolic activities were greatly restrained in saline water irrigated Soils, as average well color development (AWCD) reduced under all saline water irrigation treatments. Although no significant difference in carbon substrate utilization of all six categories was observed among Mild, Medium, High and Severe treatments, the consumption of sole carbon source was significantly varied. Especially, asparagine, galacturonic, putrescine and 4-benzoic acid played a decisive role in dominating the differences. Soil bacterial richness and diversity increased with irrigation salinity while the number of bacterial phyla decreased. Three significantly increased (Proteobacteria, Actinobacteria and Chloroflexi), two decreased (Planctomycetes, Bacteroidetes) and two irresponsive (Gemmatimonadetes and Acidobacteria) phyla were observed as the dominant groups in saline water irrigated Soils. The results presented here could improve the understanding of the Soil biological Process under saline circumstance.

  • impacts of aquaculture wastewater irrigation on Soil Microbial functional diversity and community structure in arid regions
    Scientific Reports, 2017
    Co-Authors: Yongjiu Feng, Fengrui Li, Lijuan Chen, Hang Zheng, Qi Feng, Changsheng Li, Yan Zhao, Huiya Li
    Abstract:

    Aquaculture wastewater is one of the most important alternative water resources in arid regions where scarcity of fresh water is common. Irrigation with this kind of water may affect Soil Microbial functional diversity and community structure as changes of Soil environment would be significant. Here, we conducted a field sampling to investigate these effects using Biolog and metagenomic methods. The results demonstrated that irrigation with aquaculture wastewater could dramatically reduce Soil Microbial functional diversity. The values of diversity indices and sole carbon source utilization were all significantly decreased. Increased Soil salinity, especially Cl concentration, appeared primarily associated with the decreases. Differently, higher bacterial community diversity was obtained in aquaculture wastewater irrigated Soils. More abundant phyla Actinobacteria, Chloroflexi, Acidobacteria, Gemmatimonadetes and fewer members of Proteobacteria, Bacteroidetes and Planctomycetes were found in this kind of Soils. Changes in the concentration of Soil Cl mainly accounted for the shifts of bacterial community composition. This research can improve our understanding of how aquaculture wastewater irrigation changes Soil Microbial Process and as a result, be useful to manage Soil and wastewater resources in arid regions.

Robert Lensi - One of the best experts on this subject based on the ideXlab platform.

  • Spatial variability of the functional stability of Microbial respiration Process: a microcosm study using tropical forest Soil
    Journal of Soils and Sediments, 2012
    Co-Authors: Nathalie Fromin, Benjamin Porte, Robert Lensi, Jérôme Hamelin, Anne-marie Domenach, Bruno Buatois, Jean-christophe Roggy
    Abstract:

    Purpose Understanding the ability of ecosystem Processes to resist to and to recover from disturbances is critical to sustainable land use. However, the spatial variability of the stability has rarely been addressed. Here, we investigated the functional stability of a Soil Microbial Process for 24 Soils collected from adjacent locations from a 0.3 ha tropical rainforest plot in Paracou, French Guiana. Materials and methods The 24 locations were characterized regarding Soil chemical and biological (Microbial diversity) parameters and forest structure. The corresponding Soils were submitted to an experimental transient heat disturbance during a microcosm experiment. The response of the respiration Process was followed using substrate-induced respiration (SIR). Results and discussion The response of Soil SIR to heat disturbance varied widely between samples. The variability of the SIR response increased just after the disturbance, and a global rather homogeneous decrease in SIR rates was observed 15 and 30 days after. The stability of SIR in response to heat disturbance could not be related to either the genetic or the metabolic diversity of the Microbial community. The initial level of SIR before the disturbance was the Soil variable that best correlated with the impact of the disturbance: the Soil locations with the highest initial SIR rates were the most affected 15 and 30 days after the heat disturbance. Conclusions Such a heterogeneous response suggests that the response of Soil Processes to a disturbance will be difficult to assess from only local-scale analyses and highlights the need for spatial explicitness in understanding biogeochemical Processes.

  • spatial variability of the functional stability of Microbial respiration Process a microcosm study using tropical forest Soil
    Journal of Soils and Sediments, 2012
    Co-Authors: Nathalie Fromin, Benjamin Porte, Robert Lensi, Jérôme Hamelin, Anne-marie Domenach, Bruno Buatois, Jean-christophe Roggy
    Abstract:

    Purpose Understanding the ability of ecosystem Processes to resist to and to recover from disturbances is critical to sustainable land use. However, the spatial variability of the stability has rarely been addressed. Here, we investigated the functional stability of a Soil Microbial Process for 24 Soils collected from adjacent locations from a 0.3 ha tropical rainforest plot in Paracou, French Guiana.

  • Spatial variability of the functional stability of Microbial respiration Process: a microcosm study using tropical forest Soil
    Journal of Soils and Sediments, 2012
    Co-Authors: Nathalie Fromin, Benjamin Porte, Robert Lensi, Jérôme Hamelin, Anne-marie Domenach, Bruno Buatois, Jean-christophe Roggy
    Abstract:

    Understanding the ability of ecosystem Processes to resist to and to recover from disturbances is critical to sustainable land use. However, the spatial variability of the stability has rarely been addressed. Here, we investigated the functional stability of a Soil Microbial Process for 24 Soils collected from adjacent locations from a 0.3 ha tropical rainforest plot in Paracou, French Guiana. The 24 locations were characterized regarding Soil chemical and biological (Microbial diversity) parameters and forest structure. The corresponding Soils were submitted to an experimental transient heat disturbance during a microcosm experiment. The response of the respiration Process was followed using substrate-induced respiration (SIR). The response of Soil SIR to heat disturbance varied widely between samples. The variability of the SIR response increased just after the disturbance, and a global rather homogeneous decrease in SIR rates was observed 15 and 30 days after. The stability of SIR in response to heat disturbance could not be related to either the genetic or the metabolic diversity of the Microbial community. The initial level of SIR before the disturbance was the Soil variable that best correlated with the impact of the disturbance: the Soil locations with the highest initial SIR rates were the most affected 15 and 30 days after the heat disturbance. Such a heterogeneous response suggests that the response of Soil Processes to a disturbance will be difficult to assess from only local-scale analyses and highlights the need for spatial explicitness in understanding biogeochemical Processes.