Jennifer Harden, PhD (Former Employee)
Science and Products
Filter Total Items: 144
The role of soil drainage class in carbon dioxide exchange and decomposition in boreal black spruce (Picea mariana) forest stands The role of soil drainage class in carbon dioxide exchange and decomposition in boreal black spruce (Picea mariana) forest stands
Black spruce (Picea mariana (Mill.) B.S.P.) forest stands range from well drained to poorly drained, typically contain large amounts of soil organic carbon (SOC), and are often underlain by permafrost. To better understand the role of soil drainage class in carbon dioxide (CO2) exchange and decomposition, we measured soil respiration and net CO2 fluxes, litter decomposition and...
Authors
K.P. Wickland, J. C. Neff, J.W. Harden
A dynamic organic soil biogeochemical model for simulating the effects of wildfire on soil environmental conditions and carbon dynamics of black spruce forests A dynamic organic soil biogeochemical model for simulating the effects of wildfire on soil environmental conditions and carbon dynamics of black spruce forests
No abstract available.
Authors
Shuhua Yi, A. David McGuire, Eric Kasischke, Jennifer Harden, Kristen Manies, Michelle Mack, Merritt Turetsky
Changes in Species, Areal Cover, and Production of Moss across a Fire Chronosequence in Interior Alaska Changes in Species, Areal Cover, and Production of Moss across a Fire Chronosequence in Interior Alaska
In an effort to characterize the species and production rates of various upland mosses and their relationship to both site drainage and time since fire, annual net primary production of six common moss species was measured. Several stands located near Delta Junction, interior Alaska, were located. These stands ranged from one to 116 years since fire in well-drained (dry) and moderately...
Authors
J.W. Harden, J. Munster, K.L. Manies, M.C. Mack, J. L. Bubier
Erosion of soil organic carbon: implications for carbon sequestration Erosion of soil organic carbon: implications for carbon sequestration
Agricultural activities have substantially increased rates of soil erosion and deposition, and these processes have a significant impact on carbon (C) mineralization and burial. Here, we present a synthesis of erosion effects on carbon dynamics and discuss the implications of soil erosion for carbon sequestration strategies. We demonstrate that for a range of data-based parameters from...
Authors
Kristof Van Oost, Hendrik Van Hemelryck, Jennifer W. Harden
Interactions between soil thermal and hydrological dynamics in the response of Alaska ecosystems to fire disturbance Interactions between soil thermal and hydrological dynamics in the response of Alaska ecosystems to fire disturbance
Soil temperature and moisture are important factors that control many ecosystem processes. However, interactions between soil thermal and hydrological processes are not adequately understood in cold regions, where the frozen soil, fire disturbance, and soil drainage play important roles in controlling interactions among these processes. These interactions were investigated with a new...
Authors
Shuhua Yi, A. David McGuire, Jennifer Harden, Eric Kasischke, Kristen L. Manies, Larry Hinzman, Anna K. Liljedahl, J. Randerson, Heping Liu, Vladimir E. Romanovsky, Sergey S. Marchenko, Yongwon Kim
The effect of moisture content on the thermal conductivity of moss and organic soil horizons from black spruce ecosystems in interior alaska The effect of moisture content on the thermal conductivity of moss and organic soil horizons from black spruce ecosystems in interior alaska
Organic soil horizons function as important controls on the thermal state of near-surface soil and permafrost in high-latitude ecosystems. The thermal conductivity of organic horizons is typically lower than mineral soils and is closely linked to moisture content, bulk density, and water phase. In this study, we examined the relationship between thermal conductivity and soil moisture for...
Authors
J. A. O'Donnell, V.E. Romanovsky, J.W. Harden, A. D. McGuire
Science and Products
Filter Total Items: 144
The role of soil drainage class in carbon dioxide exchange and decomposition in boreal black spruce (Picea mariana) forest stands The role of soil drainage class in carbon dioxide exchange and decomposition in boreal black spruce (Picea mariana) forest stands
Black spruce (Picea mariana (Mill.) B.S.P.) forest stands range from well drained to poorly drained, typically contain large amounts of soil organic carbon (SOC), and are often underlain by permafrost. To better understand the role of soil drainage class in carbon dioxide (CO2) exchange and decomposition, we measured soil respiration and net CO2 fluxes, litter decomposition and...
Authors
K.P. Wickland, J. C. Neff, J.W. Harden
A dynamic organic soil biogeochemical model for simulating the effects of wildfire on soil environmental conditions and carbon dynamics of black spruce forests A dynamic organic soil biogeochemical model for simulating the effects of wildfire on soil environmental conditions and carbon dynamics of black spruce forests
No abstract available.
Authors
Shuhua Yi, A. David McGuire, Eric Kasischke, Jennifer Harden, Kristen Manies, Michelle Mack, Merritt Turetsky
Changes in Species, Areal Cover, and Production of Moss across a Fire Chronosequence in Interior Alaska Changes in Species, Areal Cover, and Production of Moss across a Fire Chronosequence in Interior Alaska
In an effort to characterize the species and production rates of various upland mosses and their relationship to both site drainage and time since fire, annual net primary production of six common moss species was measured. Several stands located near Delta Junction, interior Alaska, were located. These stands ranged from one to 116 years since fire in well-drained (dry) and moderately...
Authors
J.W. Harden, J. Munster, K.L. Manies, M.C. Mack, J. L. Bubier
Erosion of soil organic carbon: implications for carbon sequestration Erosion of soil organic carbon: implications for carbon sequestration
Agricultural activities have substantially increased rates of soil erosion and deposition, and these processes have a significant impact on carbon (C) mineralization and burial. Here, we present a synthesis of erosion effects on carbon dynamics and discuss the implications of soil erosion for carbon sequestration strategies. We demonstrate that for a range of data-based parameters from...
Authors
Kristof Van Oost, Hendrik Van Hemelryck, Jennifer W. Harden
Interactions between soil thermal and hydrological dynamics in the response of Alaska ecosystems to fire disturbance Interactions between soil thermal and hydrological dynamics in the response of Alaska ecosystems to fire disturbance
Soil temperature and moisture are important factors that control many ecosystem processes. However, interactions between soil thermal and hydrological processes are not adequately understood in cold regions, where the frozen soil, fire disturbance, and soil drainage play important roles in controlling interactions among these processes. These interactions were investigated with a new...
Authors
Shuhua Yi, A. David McGuire, Jennifer Harden, Eric Kasischke, Kristen L. Manies, Larry Hinzman, Anna K. Liljedahl, J. Randerson, Heping Liu, Vladimir E. Romanovsky, Sergey S. Marchenko, Yongwon Kim
The effect of moisture content on the thermal conductivity of moss and organic soil horizons from black spruce ecosystems in interior alaska The effect of moisture content on the thermal conductivity of moss and organic soil horizons from black spruce ecosystems in interior alaska
Organic soil horizons function as important controls on the thermal state of near-surface soil and permafrost in high-latitude ecosystems. The thermal conductivity of organic horizons is typically lower than mineral soils and is closely linked to moisture content, bulk density, and water phase. In this study, we examined the relationship between thermal conductivity and soil moisture for...
Authors
J. A. O'Donnell, V.E. Romanovsky, J.W. Harden, A. D. McGuire
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