The Experts below are selected from a list of 12666 Experts worldwide ranked by ideXlab platform
Philippe Delacote - One of the best experts on this subject based on the ideXlab platform.
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unsustainable Timber Harvesting deforestation and the role of certification
Ecological Economics, 2011Co-Authors: Olivier Damette, Philippe DelacoteAbstract:Deforestation is a major environmental issue, while demand for Timber products increases rapidly in the developing world. One can thus wonder whether forest Harvesting is sustainable worldwide, or if demand for Timber products is fulfilled with the products from deforestation. Our panel data analysis shows that countries where Timber Harvesting is more important tend to experience larger deforestation rates than others, giving the intuition that forest Harvesting is generally not sustainable. We also show that Timber certification is negatively related to deforestation and thus seems to be a good indicator of Harvesting sustainability.
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Unsustainable Timber Harvesting, deforestation and the role of certification
Ecological Economics, 2011Co-Authors: Olivier Damette, Philippe DelacoteAbstract:Deforestation is a major environmental issue, while demand for Timber products increases rapidly in the developing world. One can thus wonder whether forest Harvesting is sustainable worldwide, or if demand for Timber products is fulfilled with the products from deforestation. Our panel data analysis shows that countries where Timber Harvesting is more important tend to experience larger deforestation rates than others, giving the intuition that forest Harvesting is generally not sustainable. We also show that Timber certification is negatively related to deforestation and thus seems to be a good indicator of Harvesting sustainability. (C) 2011 Elsevier B.V. All rights reserved.
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Is Timber Harvesting related to deforestation? On the unsustainable nature of Timber Harvesting
2010Co-Authors: Olivier Damette, Philippe DelacoteAbstract:Deforestation is a major environmental issue, while demand for Timber products increases rapidly in the developing world. One can thus wonder whether forest Harvesting is sustainable worldwide, or if demand for Timber products is fulfilled with the products from deforestation. Our panel data analysis shows that countries where Timber Harvesting is more important tend to experience larger deforestation rates than others, giving the intuition that forest Harvesting is generally not sustainable. We also show that Timber certification seems to be a good indicator of forest Harvesting sustainability.
William W Mohn - One of the best experts on this subject based on the ideXlab platform.
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a metagenomic survey of forest soil microbial communities more than a decade after Timber Harvesting
Scientific Data, 2017Co-Authors: Roland C Wilhelm, Erick Cardenas, Kendra R Maas, Hilary Leung, Martin Hartmann, Aria S Hahn, Steven J Hallam, William W MohnAbstract:The scarcity of long-term data on soil microbial communities in the decades following Timber Harvesting limits current understanding of the ecological problems associated with maintaining the productivity of managed forests. The high complexity of soil communities and the heterogeneity of forest and soil necessitates a comprehensive approach to understand the role of microbial processes in managed forest ecosystems. Here, we describe a curated collection of well replicated, multi-faceted data from eighteen reforested sites in six different North American ecozones within the Long-term Soil Productivity (LTSP) Study, without detailed analysis of results or discussion. The experiments were designed to contrast microbial community composition and function among forest soils from harvested treatment plots with varying intensities of organic matter removal. The collection includes 724 bacterial (16S) and 658 fungal (ITS2) amplicon libraries, 133 shotgun metagenomic libraries as well as stable isotope probing amplicon libraries capturing the effects of Harvesting on hemicellulolytic and cellulolytic populations. This collection serves as a foundation for the LTSP Study and other studies of the ecology of forest soil and forest disturbance. Machine-accessible metadata file describing the reported data (ISA-Tab format)
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long term enrichment of stress tolerant cellulolytic soil populations following Timber Harvesting evidenced by multi omic stable isotope probing
Frontiers in Microbiology, 2017Co-Authors: Roland C Wilhelm, Erick Cardenas, Hilary Leung, Andras Szeitz, Lionel D Jensen, William W MohnAbstract:Soil management is vital for maintaining the productivity of commercial forests, yet the long-term impact of Timber Harvesting on soil microbial communities remains largely a matter of conjecture. Decomposition of plant biomass, comprised mainly of lignocellulose, has a broad impact on nutrient cycling, microbial activity and physicochemical characteristics of soil. At ‘Long-term Soil Productivity Study’ sites in California dominated by Ponderosa pine, we tested whether clear-cut Timber Harvesting, accompanied by varying degrees of organic matter (OM) removal, affected the activity and structure of the cellulose-degrading microbial populations sixteen years after Harvesting. Using a variety of experimental approaches, including stable isotope probing with 13C-labelled cellulose in soil microcosms, we demonstrated that Harvesting led to a decrease in net respiration and cellulolytic activity. The decrease in cellulolytic activity was associated with an increased relative abundance of thermophilic, cellulolytic fungi (Chaetomiaceae), coupled with a decreased relative abundance of cellulolytic bacteria, particularly members of Opitutaceae, Caulobacter and Streptomycetaceae. In general, Harvesting led to an increase in stress-tolerant taxa (i.e. also non-cellulolytic taxa), though our results indicated that OM retention mitigated population shifts via buffering against abiotic changes. Stable-isotope probing improved shotgun metagenome assembly by 20-fold and enabled the recovery of ten metagenome-assembled genomes of cellulolytic bacteria and fungi. Our study demonstrates the putative cellulolytic activity of a number of uncultured taxa and highlights the mineral soil layer as a reservoir of uncharacterized diversity of cellulose-degraders. It also and contributes to a growing body of research showing persistent changes in microbial community structure in the decades following forest Harvesting.
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long term effects of Timber Harvesting on hemicellulolytic microbial populations in coniferous forest soils
The ISME Journal, 2016Co-Authors: Hilary Leung, Roland C Wilhelm, Kendra R Maas, William W MohnAbstract:Long-term effects of Timber Harvesting on hemicellulolytic microbial populations in coniferous forest soils
Roland C Wilhelm - One of the best experts on this subject based on the ideXlab platform.
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Biogeography and organic matter removal shape long-term effects of Timber Harvesting on forest soil microbial communities
The ISME Journal, 2017Co-Authors: Roland C Wilhelm, Erick Cardenas, Kendra R Maas, Hilary Leung, Larisa Mcneil, Shannon Berch, William Chapman, Graeme Hope, J M Kranabetter, Stephane DubéAbstract:The growing demand for renewable, carbon-neutral materials and energy is leading to intensified forest land-use. The long-term ecological challenges associated with maintaining soil fertility in managed forests are not yet known, in part due to the complexity of soil microbial communities and the heterogeneity of forest soils. This study determined the long-term effects of Timber Harvesting, accompanied by varied organic matter (OM) removal, on bacterial and fungal soil populations in 11- to 17-year-old reforested coniferous plantations at 18 sites across North America. Analysis of highly replicated 16 S rRNA gene and ITS region pyrotag libraries and shotgun metagenomes demonstrated consistent changes in microbial communities in harvested plots that included the expansion of desiccation- and heat-tolerant organisms and decline in diversity of ectomycorrhizal fungi. However, the majority of taxa, including the most abundant and cosmopolitan groups, were unaffected by Harvesting. Shifts in microbial populations that corresponded to increased temperature and soil dryness were moderated by OM retention, which also selected for sub-populations of fungal decomposers. Biogeographical differences in the distribution of taxa as well as local edaphic and environmental conditions produced substantial variation in the effects of Harvesting. This extensive molecular-based investigation of forest soil advances our understanding of forest disturbance and lays the foundation for monitoring long-term impacts of Timber Harvesting.
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a metagenomic survey of forest soil microbial communities more than a decade after Timber Harvesting
Scientific Data, 2017Co-Authors: Roland C Wilhelm, Erick Cardenas, Kendra R Maas, Hilary Leung, Martin Hartmann, Aria S Hahn, Steven J Hallam, William W MohnAbstract:The scarcity of long-term data on soil microbial communities in the decades following Timber Harvesting limits current understanding of the ecological problems associated with maintaining the productivity of managed forests. The high complexity of soil communities and the heterogeneity of forest and soil necessitates a comprehensive approach to understand the role of microbial processes in managed forest ecosystems. Here, we describe a curated collection of well replicated, multi-faceted data from eighteen reforested sites in six different North American ecozones within the Long-term Soil Productivity (LTSP) Study, without detailed analysis of results or discussion. The experiments were designed to contrast microbial community composition and function among forest soils from harvested treatment plots with varying intensities of organic matter removal. The collection includes 724 bacterial (16S) and 658 fungal (ITS2) amplicon libraries, 133 shotgun metagenomic libraries as well as stable isotope probing amplicon libraries capturing the effects of Harvesting on hemicellulolytic and cellulolytic populations. This collection serves as a foundation for the LTSP Study and other studies of the ecology of forest soil and forest disturbance. Machine-accessible metadata file describing the reported data (ISA-Tab format)
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long term enrichment of stress tolerant cellulolytic soil populations following Timber Harvesting evidenced by multi omic stable isotope probing
Frontiers in Microbiology, 2017Co-Authors: Roland C Wilhelm, Erick Cardenas, Hilary Leung, Andras Szeitz, Lionel D Jensen, William W MohnAbstract:Soil management is vital for maintaining the productivity of commercial forests, yet the long-term impact of Timber Harvesting on soil microbial communities remains largely a matter of conjecture. Decomposition of plant biomass, comprised mainly of lignocellulose, has a broad impact on nutrient cycling, microbial activity and physicochemical characteristics of soil. At ‘Long-term Soil Productivity Study’ sites in California dominated by Ponderosa pine, we tested whether clear-cut Timber Harvesting, accompanied by varying degrees of organic matter (OM) removal, affected the activity and structure of the cellulose-degrading microbial populations sixteen years after Harvesting. Using a variety of experimental approaches, including stable isotope probing with 13C-labelled cellulose in soil microcosms, we demonstrated that Harvesting led to a decrease in net respiration and cellulolytic activity. The decrease in cellulolytic activity was associated with an increased relative abundance of thermophilic, cellulolytic fungi (Chaetomiaceae), coupled with a decreased relative abundance of cellulolytic bacteria, particularly members of Opitutaceae, Caulobacter and Streptomycetaceae. In general, Harvesting led to an increase in stress-tolerant taxa (i.e. also non-cellulolytic taxa), though our results indicated that OM retention mitigated population shifts via buffering against abiotic changes. Stable-isotope probing improved shotgun metagenome assembly by 20-fold and enabled the recovery of ten metagenome-assembled genomes of cellulolytic bacteria and fungi. Our study demonstrates the putative cellulolytic activity of a number of uncultured taxa and highlights the mineral soil layer as a reservoir of uncharacterized diversity of cellulose-degraders. It also and contributes to a growing body of research showing persistent changes in microbial community structure in the decades following forest Harvesting.
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long term effects of Timber Harvesting on hemicellulolytic microbial populations in coniferous forest soils
The ISME Journal, 2016Co-Authors: Hilary Leung, Roland C Wilhelm, Kendra R Maas, William W MohnAbstract:Long-term effects of Timber Harvesting on hemicellulolytic microbial populations in coniferous forest soils
Hilary Leung - One of the best experts on this subject based on the ideXlab platform.
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Biogeography and organic matter removal shape long-term effects of Timber Harvesting on forest soil microbial communities
The ISME Journal, 2017Co-Authors: Roland C Wilhelm, Erick Cardenas, Kendra R Maas, Hilary Leung, Larisa Mcneil, Shannon Berch, William Chapman, Graeme Hope, J M Kranabetter, Stephane DubéAbstract:The growing demand for renewable, carbon-neutral materials and energy is leading to intensified forest land-use. The long-term ecological challenges associated with maintaining soil fertility in managed forests are not yet known, in part due to the complexity of soil microbial communities and the heterogeneity of forest soils. This study determined the long-term effects of Timber Harvesting, accompanied by varied organic matter (OM) removal, on bacterial and fungal soil populations in 11- to 17-year-old reforested coniferous plantations at 18 sites across North America. Analysis of highly replicated 16 S rRNA gene and ITS region pyrotag libraries and shotgun metagenomes demonstrated consistent changes in microbial communities in harvested plots that included the expansion of desiccation- and heat-tolerant organisms and decline in diversity of ectomycorrhizal fungi. However, the majority of taxa, including the most abundant and cosmopolitan groups, were unaffected by Harvesting. Shifts in microbial populations that corresponded to increased temperature and soil dryness were moderated by OM retention, which also selected for sub-populations of fungal decomposers. Biogeographical differences in the distribution of taxa as well as local edaphic and environmental conditions produced substantial variation in the effects of Harvesting. This extensive molecular-based investigation of forest soil advances our understanding of forest disturbance and lays the foundation for monitoring long-term impacts of Timber Harvesting.
-
a metagenomic survey of forest soil microbial communities more than a decade after Timber Harvesting
Scientific Data, 2017Co-Authors: Roland C Wilhelm, Erick Cardenas, Kendra R Maas, Hilary Leung, Martin Hartmann, Aria S Hahn, Steven J Hallam, William W MohnAbstract:The scarcity of long-term data on soil microbial communities in the decades following Timber Harvesting limits current understanding of the ecological problems associated with maintaining the productivity of managed forests. The high complexity of soil communities and the heterogeneity of forest and soil necessitates a comprehensive approach to understand the role of microbial processes in managed forest ecosystems. Here, we describe a curated collection of well replicated, multi-faceted data from eighteen reforested sites in six different North American ecozones within the Long-term Soil Productivity (LTSP) Study, without detailed analysis of results or discussion. The experiments were designed to contrast microbial community composition and function among forest soils from harvested treatment plots with varying intensities of organic matter removal. The collection includes 724 bacterial (16S) and 658 fungal (ITS2) amplicon libraries, 133 shotgun metagenomic libraries as well as stable isotope probing amplicon libraries capturing the effects of Harvesting on hemicellulolytic and cellulolytic populations. This collection serves as a foundation for the LTSP Study and other studies of the ecology of forest soil and forest disturbance. Machine-accessible metadata file describing the reported data (ISA-Tab format)
-
long term enrichment of stress tolerant cellulolytic soil populations following Timber Harvesting evidenced by multi omic stable isotope probing
Frontiers in Microbiology, 2017Co-Authors: Roland C Wilhelm, Erick Cardenas, Hilary Leung, Andras Szeitz, Lionel D Jensen, William W MohnAbstract:Soil management is vital for maintaining the productivity of commercial forests, yet the long-term impact of Timber Harvesting on soil microbial communities remains largely a matter of conjecture. Decomposition of plant biomass, comprised mainly of lignocellulose, has a broad impact on nutrient cycling, microbial activity and physicochemical characteristics of soil. At ‘Long-term Soil Productivity Study’ sites in California dominated by Ponderosa pine, we tested whether clear-cut Timber Harvesting, accompanied by varying degrees of organic matter (OM) removal, affected the activity and structure of the cellulose-degrading microbial populations sixteen years after Harvesting. Using a variety of experimental approaches, including stable isotope probing with 13C-labelled cellulose in soil microcosms, we demonstrated that Harvesting led to a decrease in net respiration and cellulolytic activity. The decrease in cellulolytic activity was associated with an increased relative abundance of thermophilic, cellulolytic fungi (Chaetomiaceae), coupled with a decreased relative abundance of cellulolytic bacteria, particularly members of Opitutaceae, Caulobacter and Streptomycetaceae. In general, Harvesting led to an increase in stress-tolerant taxa (i.e. also non-cellulolytic taxa), though our results indicated that OM retention mitigated population shifts via buffering against abiotic changes. Stable-isotope probing improved shotgun metagenome assembly by 20-fold and enabled the recovery of ten metagenome-assembled genomes of cellulolytic bacteria and fungi. Our study demonstrates the putative cellulolytic activity of a number of uncultured taxa and highlights the mineral soil layer as a reservoir of uncharacterized diversity of cellulose-degraders. It also and contributes to a growing body of research showing persistent changes in microbial community structure in the decades following forest Harvesting.
-
long term effects of Timber Harvesting on hemicellulolytic microbial populations in coniferous forest soils
The ISME Journal, 2016Co-Authors: Hilary Leung, Roland C Wilhelm, Kendra R Maas, William W MohnAbstract:Long-term effects of Timber Harvesting on hemicellulolytic microbial populations in coniferous forest soils
Olivier Damette - One of the best experts on this subject based on the ideXlab platform.
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unsustainable Timber Harvesting deforestation and the role of certification
Ecological Economics, 2011Co-Authors: Olivier Damette, Philippe DelacoteAbstract:Deforestation is a major environmental issue, while demand for Timber products increases rapidly in the developing world. One can thus wonder whether forest Harvesting is sustainable worldwide, or if demand for Timber products is fulfilled with the products from deforestation. Our panel data analysis shows that countries where Timber Harvesting is more important tend to experience larger deforestation rates than others, giving the intuition that forest Harvesting is generally not sustainable. We also show that Timber certification is negatively related to deforestation and thus seems to be a good indicator of Harvesting sustainability.
-
Unsustainable Timber Harvesting, deforestation and the role of certification
Ecological Economics, 2011Co-Authors: Olivier Damette, Philippe DelacoteAbstract:Deforestation is a major environmental issue, while demand for Timber products increases rapidly in the developing world. One can thus wonder whether forest Harvesting is sustainable worldwide, or if demand for Timber products is fulfilled with the products from deforestation. Our panel data analysis shows that countries where Timber Harvesting is more important tend to experience larger deforestation rates than others, giving the intuition that forest Harvesting is generally not sustainable. We also show that Timber certification is negatively related to deforestation and thus seems to be a good indicator of Harvesting sustainability. (C) 2011 Elsevier B.V. All rights reserved.
-
Is Timber Harvesting related to deforestation? On the unsustainable nature of Timber Harvesting
2010Co-Authors: Olivier Damette, Philippe DelacoteAbstract:Deforestation is a major environmental issue, while demand for Timber products increases rapidly in the developing world. One can thus wonder whether forest Harvesting is sustainable worldwide, or if demand for Timber products is fulfilled with the products from deforestation. Our panel data analysis shows that countries where Timber Harvesting is more important tend to experience larger deforestation rates than others, giving the intuition that forest Harvesting is generally not sustainable. We also show that Timber certification seems to be a good indicator of forest Harvesting sustainability.
