Miriam HurkuckWilfrid Laurier University | WLU · Department of Geography and Environmental Studies
Miriam Hurkuck
Dr. sc.
About
19
Publications
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Introduction
Additional affiliations
June 2017 - present
June 2017 - present
June 2017 - present
Publications
Publications (19)
Arctic and boreal ecosystems play an important role in the global carbon (C) budget, and whether they act as a future net C sink or source depends on climate and environmental change. Here we used complementary in situ measurements, model simulations, and satellite observations to investigate the net carbon dioxide (CO2) seasonal cycle and its clim...
Peatlands store substantial amounts of carbon and are vulnerable to climate change. We present a modified version of the Organising Carbon and Hydrology In Dynamic Ecosystems (ORCHIDEE) land surface model for simulating the hydrology, surface energy, and CO2 fluxes of peatlands on daily to annual timescales. The model includes a separate soil tile...
Peatlands store substantial amount of carbon, are vulnerable to climate change. To predict the fate of carbon stored in peatlands, the complex interactions between water, peat and vegetations need more attention. This study describes a modified version of the ORCHIDEE land surface model for simulating the hydrology, surface energy and CO2 fluxes of...
Recent advances in laser spectrometry offer new opportunities to investigate the soil–atmosphere exchange of nitrous oxide. During two field campaigns conducted at a grassland site and a willow field, we tested the performance of a quantum cascade laser (QCL) connected to a newly developed automated chamber system against a conventional gas chromat...
Recent advances in laser spectrometry offer new opportunities to investigate soil-atmosphere exchange of nitrous oxide. During two field campaigns conducted at a grassland site and a willow field, we tested the performance of a quantum cascade laser (QCL) connected to a newly developed automated chamber system against a conventional gas chromatogra...
The majority of peatlands in the temperate zone is subjected to drainage and agricultural land use and have been found to be anthropogenic emission hotspots for greenhouse gases. At the same time, many peatlands receive increased atmospheric nitrogen (N) deposition by intensive agricultural practices. Here we provide eddy-covariance measurements de...
We applied a 15N dilution technique called “Integrated Total Nitrogen Input” (ITNI) to quantify annual atmospheric N input into a peatland surrounded by intensive agricultural practices over a 2-year period. Grass species and grass growth effects on atmospheric N deposition were investigated using Lolium multiflorum and Eriophorum vaginatum and dif...
Nitrous oxide (N2O) is an extremely potent greenhouse gas that is produced naturally in the soil environment during both nitrification and denitrification. Chamber based techniques – adapted from other greenhouse gas research fields – have been used for many years to study soil N2O emissions. These chambers can provide estimates of gaseous fluxes,...
Large areas of Northern Germany have been converted from natural peat
bogs to arable land and were subjected to draining and peat cutting in
the past. The few protected peatland areas remaining are affected by
high nitrogen (N) deposition. This is the case at our study site - a
semi-natural raised bog - which although located in a natural park, is...
Methane plays an important role as a radiatively and chemically active gas in our atmosphere. Until recently, sources of atmospheric methane in the biosphere have been attributed to strictly anaerobic microbial processes during degradation of organic matter. However, a large fraction of methane produced in the anoxic soil layers does not reach the...
Methane plays an important role as a radiatively and chemically active gas in our atmosphere. Until recently, sources of atmospheric methane in the biosphere have been attributed to strictly anaerobic microbial processes during degradation of organic matter. However, a large fraction of methane produced in the anoxic soil layers does not reach the...
Large areas of natural peat bogs in Northwestern Germany have been
converted to arable land and are characterised by decades of draining
and peat cutting. Our study site - a semi-natural raised bog - is one of
only very few remaining protected peatland areas. However, it is
surrounded by highly fertilized agricultural land and poultry farms. In
thi...
Methane (CH(4)) formation under aerobic conditions has been intensely debated, especially since the discovery of CH(4) generation by both dried plant material and living plants. In this study we test the hypothesis that non-microbial CH(4) formation also occurs in soils. All lyophilised soil samples investigated under aerobic conditions released CH...
Latest research confirmed that plant matter can also produce a non negligible amount of the greenhouse gas methane under aerobic conditions. These findings have led to discussions and controversy within the research community. While KEPPLER ET AL. (2006) as one of the first researchers published results supporting this hypothesis others like DUECK...