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Surface drainage ditches improve drainage and reduce in-field flooding, but have been implicated in loss of nutrients and reduction of downstream water quality. However, ditches may also assist in minimizing off-site nutrient losses via within-ditch nutrient cycling and retention. Drainage has been increasing in the sub-humid regions of the Prairie Pothole Region, but little work has been done to...
Soil profiles in mountain peatlands commonly show complex stratigraphy with both underlying and interbedded mineral sediments. The presence and types of mineral sediments may affect nutrient gradients via the vertical and horizontal movements of groundwater, which further influences biogeochemical processes, especially for deeper peat adjacent to mineral sediments. To study influences of stratified...
Digital soil mapping of wetland soils has met with limited success in part because terrain attributes based on hillslope hydrology are inappropriate for predicting the pedological consequences of wetland hydrology. Our objective is to synthesize recent developments in the hydrology and hydrochemistry of wetlands in the northern Prairie Pothole Region (PPR) and apply this enhanced understanding to...
Arctic soils store great amounts of soil organic matter (SOM) that are likely to be affected by future climate changes. Knowledge of the ability of the soil to mineralize nitrogen (N) and release greenhouse gases (GHG) at the landscape scale is critical to predict and model future effects of climate change on Arctic SOM. The objective of this study was to investigate how soil gross N mineralization...
The characteristic feature of the Prairie Pothole Region is a complex assemblage of mineral soil wetlands embedded in the dominantly agricultural landscape. Soils in these wetlands are loci of high potential greenhouse gas (GHG) emissions, and our objective was to provide estimates of greenhouse gas emissions and the controls on these emissions for typical wetlands of this region. Three years (2004–06)...
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