The Experts below are selected from a list of 252 Experts worldwide ranked by ideXlab platform

André P. Plamondon - One of the best experts on this subject based on the ideXlab platform.

  • Ten‐year water table recovery after Clearcutting and draining boreal forested wetlands of eastern Canada
    Hydrological Processes, 2008
    Co-Authors: Philippe Marcotte, Vincent Roy, André P. Plamondon, Isabelle Auger
    Abstract:

    In boreal forested wetlands, the observed increase in the water table level after Clearcutting (watering-up) is often a threat to sustained ecosystem productivity. Hydrologic recovery refers to the processes by which a water table progressively drops back to its initial level after the cut. In eastern Canada, drainage is used operationally after Clearcutting wet sites in order to lower the water table level and accelerate hydrologic recovery. The objective of this study was to evaluate the duration of the watering-up caused by timber harvesting and the extent to which drainage affected the water table recovery on five peatlands and three hydromorphic mineral sites located in the St. Lawrence Lowlands of Quebec (Canada). The mixed wood stands studied are dominated by balsam fir (Abies balsamea (L.) Mill.), eastern white cedar (Thuja occidentalis L.), and red maple (Acer rubrum L). Results indicate that, 10 years after Clearcutting, water table levels in undrained plots are still 5 to 7 cm higher than the pre-cut levels. The slight recovery in water table level plateaued after the third year. Rainfall interception by vegetation was also monitored, and after 10 years had reached nearly 50% of the pre-cut rate. The immediate water table drawdown following drainage mitigated watering-up within 40 m of a ditch. The persistent watering-up observed in this study should encourage using sylvicultural systems adapted to boreal forested wetlands in order to prevent productivity loss and stand conversion. Copyright © 2008 John Wiley & Sons, Ltd.

  • ten year water table recovery after Clearcutting and draining boreal forested wetlands of eastern canada
    Hydrological Processes, 2008
    Co-Authors: Philippe Marcotte, Vincent Roy, André P. Plamondon, Isabelle Auger
    Abstract:

    In boreal forested wetlands, the observed increase in the water table level after Clearcutting (watering-up) is often a threat to sustained ecosystem productivity. Hydrologic recovery refers to the processes by which a water table progressively drops back to its initial level after the cut. In eastern Canada, drainage is used operationally after Clearcutting wet sites in order to lower the water table level and accelerate hydrologic recovery. The objective of this study was to evaluate the duration of the watering-up caused by timber harvesting and the extent to which drainage affected the water table recovery on five peatlands and three hydromorphic mineral sites located in the St. Lawrence Lowlands of Quebec (Canada). The mixed wood stands studied are dominated by balsam fir (Abies balsamea (L.) Mill.), eastern white cedar (Thuja occidentalis L.), and red maple (Acer rubrum L). Results indicate that, 10 years after Clearcutting, water table levels in undrained plots are still 5 to 7 cm higher than the pre-cut levels. The slight recovery in water table level plateaued after the third year. Rainfall interception by vegetation was also monitored, and after 10 years had reached nearly 50% of the pre-cut rate. The immediate water table drawdown following drainage mitigated watering-up within 40 m of a ditch. The persistent watering-up observed in this study should encourage using sylvicultural systems adapted to boreal forested wetlands in order to prevent productivity loss and stand conversion. Copyright © 2008 John Wiley & Sons, Ltd.

  • rainfall peak flow response to Clearcutting 50 of three small watersheds in a boreal forest montmorency forest quebec
    Journal of Hydrology, 2008
    Co-Authors: Yohann Tremblay, André P. Plamondon, Alain N. Rousseau, Denis Lévesque, Sylvain Jutras
    Abstract:

    Summary The scientific literature suggests that a 50% increase in bankfull discharge can significantly modified stream morphology and that such increases could be avoided by Clearcutting less than 50% of the watershed area. Also hypothesized is that Clearcutting near the stream network could have greater effect on peak flow than harvesting a comparable area further away. Following a 5-year calibration period, three small watersheds (

  • Rainfall peak flow response to Clearcutting 50% of three small watersheds in a boreal forest, Montmorency Forest, Québec
    Journal of Hydrology, 2008
    Co-Authors: Yohann Tremblay, André P. Plamondon, Alain N. Rousseau, Denis Lévesque, Sylvain Jutras
    Abstract:

    Summary The scientific literature suggests that a 50% increase in bankfull discharge can significantly modified stream morphology and that such increases could be avoided by Clearcutting less than 50% of the watershed area. Also hypothesized is that Clearcutting near the stream network could have greater effect on peak flow than harvesting a comparable area further away. Following a 5-year calibration period, three small watersheds (

  • Establishment, growth and survival of natural regeneration after Clearcutting and drainage on forested wetlands
    Forest Ecology and Management, 2000
    Co-Authors: Vincent Roy, Jean-claude Ruel, André P. Plamondon
    Abstract:

    Natural regeneration may be disrupted by the rise of the water table in surface layers after Clearcutting forested wetlands. A study was initiated on eight forested wetlands that were successively clearcut and drained 3 years later. The objectives were (1) to assess conifer and deciduous regeneration on waterlogged clearcut sites, (2) to determine the effect of water table level changes after Clearcutting and drainage on the growth rate of advance regeneration, and (3) to determine if sphagnum moss growth rate was influenced by Clearcutting, drainage and microrelief. 3 years after strip Clearcutting, the area based inventory showed that softwood regeneration was abundant in the clearcut, but 84% of the seedlings were smaller than 30 cm and vulnerable to suppression from the competition. Indeed, the opening of the forest cover promoted massive invasion of pioneer species such as trembling aspen (Populus tremuloides Michx.) and white birch (Betula papyrifera Marsh.). Black spruce (Picea mariana (Mill.) B.S.P.) and red spruce (Picea rubens Sarg.) had difficulties maintaining their presence after Clearcutting. The ratio hardwood stems : softwood stems changed from 1.1 in the forest to 3.8 in the clearcut. Balsam fir (Abies balsamea (L.) Mill.), larch (Larix laricina (Du Roi) K. Koch) and cedar (Thuja occidentalis L.) represented 93% of the softwood regeneration. 3 years after Clearcutting, balsam fir advance regeneration had a significantly lower growth rate in the middle of the clearcut than near the edges of the clearcut. 2 years after drainage, seedling growth at 10 m from the drainage ditch was significantly greater than at 70 m from ditch. No significant differences were found between mineral and organic soil types, but height growth was positively correlated to C : N ratios of the individual site types. Abundant competition on richer sites limits the development of softwood regeneration. On a short term basis, competition more than watering-up seems a threat to softwood regeneration. Sphagnum growth rates measured with the crank-wire method showed no effect of Clearcutting or drainage, but a higher growth rate in hollows (3.2 cm per year) compared to hummocks (2.0 cm per year). These growth rates indicate that sphagnum should not affect regeneration but could overgrow yearlings of slow growing species. # 2000 Elsevier Science B.V. All rights reserved.

Isabelle Auger - One of the best experts on this subject based on the ideXlab platform.

  • Ten‐year water table recovery after Clearcutting and draining boreal forested wetlands of eastern Canada
    Hydrological Processes, 2008
    Co-Authors: Philippe Marcotte, Vincent Roy, André P. Plamondon, Isabelle Auger
    Abstract:

    In boreal forested wetlands, the observed increase in the water table level after Clearcutting (watering-up) is often a threat to sustained ecosystem productivity. Hydrologic recovery refers to the processes by which a water table progressively drops back to its initial level after the cut. In eastern Canada, drainage is used operationally after Clearcutting wet sites in order to lower the water table level and accelerate hydrologic recovery. The objective of this study was to evaluate the duration of the watering-up caused by timber harvesting and the extent to which drainage affected the water table recovery on five peatlands and three hydromorphic mineral sites located in the St. Lawrence Lowlands of Quebec (Canada). The mixed wood stands studied are dominated by balsam fir (Abies balsamea (L.) Mill.), eastern white cedar (Thuja occidentalis L.), and red maple (Acer rubrum L). Results indicate that, 10 years after Clearcutting, water table levels in undrained plots are still 5 to 7 cm higher than the pre-cut levels. The slight recovery in water table level plateaued after the third year. Rainfall interception by vegetation was also monitored, and after 10 years had reached nearly 50% of the pre-cut rate. The immediate water table drawdown following drainage mitigated watering-up within 40 m of a ditch. The persistent watering-up observed in this study should encourage using sylvicultural systems adapted to boreal forested wetlands in order to prevent productivity loss and stand conversion. Copyright © 2008 John Wiley & Sons, Ltd.

  • ten year water table recovery after Clearcutting and draining boreal forested wetlands of eastern canada
    Hydrological Processes, 2008
    Co-Authors: Philippe Marcotte, Vincent Roy, André P. Plamondon, Isabelle Auger
    Abstract:

    In boreal forested wetlands, the observed increase in the water table level after Clearcutting (watering-up) is often a threat to sustained ecosystem productivity. Hydrologic recovery refers to the processes by which a water table progressively drops back to its initial level after the cut. In eastern Canada, drainage is used operationally after Clearcutting wet sites in order to lower the water table level and accelerate hydrologic recovery. The objective of this study was to evaluate the duration of the watering-up caused by timber harvesting and the extent to which drainage affected the water table recovery on five peatlands and three hydromorphic mineral sites located in the St. Lawrence Lowlands of Quebec (Canada). The mixed wood stands studied are dominated by balsam fir (Abies balsamea (L.) Mill.), eastern white cedar (Thuja occidentalis L.), and red maple (Acer rubrum L). Results indicate that, 10 years after Clearcutting, water table levels in undrained plots are still 5 to 7 cm higher than the pre-cut levels. The slight recovery in water table level plateaued after the third year. Rainfall interception by vegetation was also monitored, and after 10 years had reached nearly 50% of the pre-cut rate. The immediate water table drawdown following drainage mitigated watering-up within 40 m of a ditch. The persistent watering-up observed in this study should encourage using sylvicultural systems adapted to boreal forested wetlands in order to prevent productivity loss and stand conversion. Copyright © 2008 John Wiley & Sons, Ltd.

Sylvain Jutras - One of the best experts on this subject based on the ideXlab platform.

Vincent Roy - One of the best experts on this subject based on the ideXlab platform.

  • ten year water table recovery after Clearcutting and draining boreal forested wetlands of eastern canada
    Hydrological Processes, 2008
    Co-Authors: Philippe Marcotte, Vincent Roy, André P. Plamondon, Isabelle Auger
    Abstract:

    In boreal forested wetlands, the observed increase in the water table level after Clearcutting (watering-up) is often a threat to sustained ecosystem productivity. Hydrologic recovery refers to the processes by which a water table progressively drops back to its initial level after the cut. In eastern Canada, drainage is used operationally after Clearcutting wet sites in order to lower the water table level and accelerate hydrologic recovery. The objective of this study was to evaluate the duration of the watering-up caused by timber harvesting and the extent to which drainage affected the water table recovery on five peatlands and three hydromorphic mineral sites located in the St. Lawrence Lowlands of Quebec (Canada). The mixed wood stands studied are dominated by balsam fir (Abies balsamea (L.) Mill.), eastern white cedar (Thuja occidentalis L.), and red maple (Acer rubrum L). Results indicate that, 10 years after Clearcutting, water table levels in undrained plots are still 5 to 7 cm higher than the pre-cut levels. The slight recovery in water table level plateaued after the third year. Rainfall interception by vegetation was also monitored, and after 10 years had reached nearly 50% of the pre-cut rate. The immediate water table drawdown following drainage mitigated watering-up within 40 m of a ditch. The persistent watering-up observed in this study should encourage using sylvicultural systems adapted to boreal forested wetlands in order to prevent productivity loss and stand conversion. Copyright © 2008 John Wiley & Sons, Ltd.

  • Ten‐year water table recovery after Clearcutting and draining boreal forested wetlands of eastern Canada
    Hydrological Processes, 2008
    Co-Authors: Philippe Marcotte, Vincent Roy, André P. Plamondon, Isabelle Auger
    Abstract:

    In boreal forested wetlands, the observed increase in the water table level after Clearcutting (watering-up) is often a threat to sustained ecosystem productivity. Hydrologic recovery refers to the processes by which a water table progressively drops back to its initial level after the cut. In eastern Canada, drainage is used operationally after Clearcutting wet sites in order to lower the water table level and accelerate hydrologic recovery. The objective of this study was to evaluate the duration of the watering-up caused by timber harvesting and the extent to which drainage affected the water table recovery on five peatlands and three hydromorphic mineral sites located in the St. Lawrence Lowlands of Quebec (Canada). The mixed wood stands studied are dominated by balsam fir (Abies balsamea (L.) Mill.), eastern white cedar (Thuja occidentalis L.), and red maple (Acer rubrum L). Results indicate that, 10 years after Clearcutting, water table levels in undrained plots are still 5 to 7 cm higher than the pre-cut levels. The slight recovery in water table level plateaued after the third year. Rainfall interception by vegetation was also monitored, and after 10 years had reached nearly 50% of the pre-cut rate. The immediate water table drawdown following drainage mitigated watering-up within 40 m of a ditch. The persistent watering-up observed in this study should encourage using sylvicultural systems adapted to boreal forested wetlands in order to prevent productivity loss and stand conversion. Copyright © 2008 John Wiley & Sons, Ltd.

  • Establishment, growth and survival of natural regeneration after Clearcutting and drainage on forested wetlands
    Forest Ecology and Management, 2000
    Co-Authors: Vincent Roy, Jean-claude Ruel, André P. Plamondon
    Abstract:

    Natural regeneration may be disrupted by the rise of the water table in surface layers after Clearcutting forested wetlands. A study was initiated on eight forested wetlands that were successively clearcut and drained 3 years later. The objectives were (1) to assess conifer and deciduous regeneration on waterlogged clearcut sites, (2) to determine the effect of water table level changes after Clearcutting and drainage on the growth rate of advance regeneration, and (3) to determine if sphagnum moss growth rate was influenced by Clearcutting, drainage and microrelief. 3 years after strip Clearcutting, the area based inventory showed that softwood regeneration was abundant in the clearcut, but 84% of the seedlings were smaller than 30 cm and vulnerable to suppression from the competition. Indeed, the opening of the forest cover promoted massive invasion of pioneer species such as trembling aspen (Populus tremuloides Michx.) and white birch (Betula papyrifera Marsh.). Black spruce (Picea mariana (Mill.) B.S.P.) and red spruce (Picea rubens Sarg.) had difficulties maintaining their presence after Clearcutting. The ratio hardwood stems : softwood stems changed from 1.1 in the forest to 3.8 in the clearcut. Balsam fir (Abies balsamea (L.) Mill.), larch (Larix laricina (Du Roi) K. Koch) and cedar (Thuja occidentalis L.) represented 93% of the softwood regeneration. 3 years after Clearcutting, balsam fir advance regeneration had a significantly lower growth rate in the middle of the clearcut than near the edges of the clearcut. 2 years after drainage, seedling growth at 10 m from the drainage ditch was significantly greater than at 70 m from ditch. No significant differences were found between mineral and organic soil types, but height growth was positively correlated to C : N ratios of the individual site types. Abundant competition on richer sites limits the development of softwood regeneration. On a short term basis, competition more than watering-up seems a threat to softwood regeneration. Sphagnum growth rates measured with the crank-wire method showed no effect of Clearcutting or drainage, but a higher growth rate in hollows (3.2 cm per year) compared to hummocks (2.0 cm per year). These growth rates indicate that sphagnum should not affect regeneration but could overgrow yearlings of slow growing species. # 2000 Elsevier Science B.V. All rights reserved.

Philippe Marcotte - One of the best experts on this subject based on the ideXlab platform.

  • Ten‐year water table recovery after Clearcutting and draining boreal forested wetlands of eastern Canada
    Hydrological Processes, 2008
    Co-Authors: Philippe Marcotte, Vincent Roy, André P. Plamondon, Isabelle Auger
    Abstract:

    In boreal forested wetlands, the observed increase in the water table level after Clearcutting (watering-up) is often a threat to sustained ecosystem productivity. Hydrologic recovery refers to the processes by which a water table progressively drops back to its initial level after the cut. In eastern Canada, drainage is used operationally after Clearcutting wet sites in order to lower the water table level and accelerate hydrologic recovery. The objective of this study was to evaluate the duration of the watering-up caused by timber harvesting and the extent to which drainage affected the water table recovery on five peatlands and three hydromorphic mineral sites located in the St. Lawrence Lowlands of Quebec (Canada). The mixed wood stands studied are dominated by balsam fir (Abies balsamea (L.) Mill.), eastern white cedar (Thuja occidentalis L.), and red maple (Acer rubrum L). Results indicate that, 10 years after Clearcutting, water table levels in undrained plots are still 5 to 7 cm higher than the pre-cut levels. The slight recovery in water table level plateaued after the third year. Rainfall interception by vegetation was also monitored, and after 10 years had reached nearly 50% of the pre-cut rate. The immediate water table drawdown following drainage mitigated watering-up within 40 m of a ditch. The persistent watering-up observed in this study should encourage using sylvicultural systems adapted to boreal forested wetlands in order to prevent productivity loss and stand conversion. Copyright © 2008 John Wiley & Sons, Ltd.

  • ten year water table recovery after Clearcutting and draining boreal forested wetlands of eastern canada
    Hydrological Processes, 2008
    Co-Authors: Philippe Marcotte, Vincent Roy, André P. Plamondon, Isabelle Auger
    Abstract:

    In boreal forested wetlands, the observed increase in the water table level after Clearcutting (watering-up) is often a threat to sustained ecosystem productivity. Hydrologic recovery refers to the processes by which a water table progressively drops back to its initial level after the cut. In eastern Canada, drainage is used operationally after Clearcutting wet sites in order to lower the water table level and accelerate hydrologic recovery. The objective of this study was to evaluate the duration of the watering-up caused by timber harvesting and the extent to which drainage affected the water table recovery on five peatlands and three hydromorphic mineral sites located in the St. Lawrence Lowlands of Quebec (Canada). The mixed wood stands studied are dominated by balsam fir (Abies balsamea (L.) Mill.), eastern white cedar (Thuja occidentalis L.), and red maple (Acer rubrum L). Results indicate that, 10 years after Clearcutting, water table levels in undrained plots are still 5 to 7 cm higher than the pre-cut levels. The slight recovery in water table level plateaued after the third year. Rainfall interception by vegetation was also monitored, and after 10 years had reached nearly 50% of the pre-cut rate. The immediate water table drawdown following drainage mitigated watering-up within 40 m of a ditch. The persistent watering-up observed in this study should encourage using sylvicultural systems adapted to boreal forested wetlands in order to prevent productivity loss and stand conversion. Copyright © 2008 John Wiley & Sons, Ltd.