John A. Harrison
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View article: Educating Nursing Students about Pediatric Oral Health: An Interprofessional Education Collaboration
Educating Nursing Students about Pediatric Oral Health: An Interprofessional Education Collaboration Open
Aim: Despite dental caries in children being a large public health concern in the United States, there remains a lack of training of nondental healthcare professionals in pediatric oral health.An interprofessional learning experience for n…
View article: In situ flux estimates reveal large variations in methane flux across the bottom boundary layer of a eutrophic lake
In situ flux estimates reveal large variations in methane flux across the bottom boundary layer of a eutrophic lake Open
Methane (CH 4 ) produced in anoxic sediments plays a significant role in the carbon economy of many lakes and reservoirs. CH 4 released from sediments first crosses the bottom boundary layer (BBL), the layer of water overlying the lakebed …
View article: Measuring CH4 Fluxes From Lake and Reservoir Sediments: Methodologies and Needs
Measuring CH4 Fluxes From Lake and Reservoir Sediments: Methodologies and Needs Open
Accurately quantifying the diffusive flux of CH 4 between sediments and the overlying water column is crucial when constructing CH 4 budgets in lakes and reservoirs. Although a variety of ex situ and in situ techniques exist for determinin…
View article: A new modelling framework to assess biogenic GHG emissions from reservoirs: The G-res tool
A new modelling framework to assess biogenic GHG emissions from reservoirs: The G-res tool Open
Human-made reservoirs are now recognized as potentially significant sources of greenhouse gases, comparable to other anthropogenic sources, yet efforts to estimate these reservoir emissions have been hampered by the complexity of the under…
View article: Year 2020 reservoir methane and CO2 emissions as predicted by the g-res model
Year 2020 reservoir methane and CO2 emissions as predicted by the g-res model Open
This dataset accompanies the following publication: Harrison, J.A., Y.T. Prairie, S. Mercier-Blais, and C. Soued, (2021) Year-2020 Global Distribution and Pathways of Reservoir Methane and Carbon Dioxide Emissions According to the Greenhou…
View article: Year 2020 reservoir methane and CO2 emissions as predicted by the g-res model
Year 2020 reservoir methane and CO2 emissions as predicted by the g-res model Open
This dataset accompanies the following publication: Harrison, J.A., Y.T. Prairie, S. Mercier-Blais, and C. Soued, (2021) Year-2020 Global Distribution and Pathways of Reservoir Methane and Carbon Dioxide Emissions According to the Greenhou…
View article: Methanogenesis exceeds <scp>CH<sub>4</sub></scp> consumption in eutrophic lake sediments
Methanogenesis exceeds <span>CH<sub>4</sub></span> consumption in eutrophic lake sediments Open
Lakes and reservoirs collectively contribute significant amounts of methane (CH 4 ) to the global atmosphere. If CH 4 production were not at least partially balanced by consumption (oxidation) in most of these systems, they could potential…
View article: ResME - A Global Mechanistic Model for Methane Emissions from Hydroelectric Reservoirs
ResME - A Global Mechanistic Model for Methane Emissions from Hydroelectric Reservoirs Open
ResME is a process-based model of methane emissions from hydropower reservoirs. This collection contains the code necessary to run ResME (in .IPYNB form), ResME inputs for a subset of global reservoirs with published field measurements of …
View article: Estimating drivers and pathways for hydroelectric reservoir methane emissions using a new mechanistic model (estimated methane emissions for hydropower reservoir surfaces and potential dam emissions)
Estimating drivers and pathways for hydroelectric reservoir methane emissions using a new mechanistic model (estimated methane emissions for hydropower reservoir surfaces and potential dam emissions) Open
Methane emissions data from hydropower reservoir surfaces and dams, as estimated with the ResME model. Emissions estimates available for hydropower reservoirs in the GRanD database (Lehner et al., 2011). References: Lehner, B., Liermann, C…
View article: Estimating drivers and pathways for hydroelectric reservoir methane emissions using a new mechanistic model (estimated methane emissions for hydropower reservoir surfaces and potential dam emissions)
Estimating drivers and pathways for hydroelectric reservoir methane emissions using a new mechanistic model (estimated methane emissions for hydropower reservoir surfaces and potential dam emissions) Open
Methane emissions data from hydropower reservoir surfaces and dams, as estimated with the ResME model. Emissions estimates available for hydropower reservoirs in the GRanD database (Lehner et al., 2011). References: Lehner, B., Liermann, C…
View article: Global importance of methane emissions from drainage ditches and canals
Global importance of methane emissions from drainage ditches and canals Open
Globally, there are millions of kilometres of drainage ditches which have the potential to emit the powerful greenhouse gas methane (CH 4 ), but these emissions are not reported in budgets of inland waters or drained lands. Here, we synthe…
View article: Methane production & oxidation rates in lakes and reservoirs
Methane production & oxidation rates in lakes and reservoirs Open
Here, we present a dataset of methane (CH4) production & oxidation rates measured in peer-reviewed studies of lakes and reservoirs. The dataset includes rates of sediment CH4 production, sediment CH4 oxidation, and/or water column CH4 oxid…
View article: Methane production & oxidation rates in lakes and reservoirs
Methane production & oxidation rates in lakes and reservoirs Open
Here, we present a dataset of methane (CH4) production & oxidation rates measured in peer-reviewed studies of lakes and reservoirs. The dataset includes rates of sediment CH4 production, sediment CH4 oxidation, and/or water column CH4 oxid…
View article: Balance of N and P inputs to the Yakima River Basin, 1945-2012
Balance of N and P inputs to the Yakima River Basin, 1945-2012 Open
The following 5 data tables accompany the submitted peer-reviewed journal article SG Grieger, JA Harrison. Long-term Disconnect between Nutrient Inputs and Riverine Exports in a Semi-arid, Agricultural Watershed: Yakima River Basin 1945-20…
View article: Nitrate promotes the transfer of methane‐derived carbon from the methanotroph <i>Methylobacter</i> sp. to the methylotroph <i>Methylotenera</i> sp. in eutrophic lake water
Nitrate promotes the transfer of methane‐derived carbon from the methanotroph <i>Methylobacter</i> sp. to the methylotroph <i>Methylotenera</i> sp. in eutrophic lake water Open
Eutrophic lakes are major contributors to global aquatic methane emissions. Methanotrophy, performed by methane oxidizing bacteria, results in the production of biomass, fermentation products and/or CO 2 , making methane‐derived carbon ava…
View article: Where Have All the Nutrients Gone? Long‐Term Decoupling of Inputs and Outputs in the Willamette River Watershed, Oregon, United States
Where Have All the Nutrients Gone? Long‐Term Decoupling of Inputs and Outputs in the Willamette River Watershed, Oregon, United States Open
Better documentation and understanding of long‐term temporal dynamics of nitrogen (N) and phosphorus (P) in watersheds is necessary to support effective water quality management, in part because studies have identified time lags between te…
View article: The U.S. consumer phosphorus footprint: where do nitrogen and phosphorus diverge?
The U.S. consumer phosphorus footprint: where do nitrogen and phosphorus diverge? Open
Phosphorus (P) and nitrogen (N) are essential nutrients for food production but their excess use in agriculture can have major social costs, particularly related to water quality degradation. Nutrient footprint approaches estimate N and P …
View article: Impact of Electron Acceptor Availability on Methane-Influenced Microorganisms in an Enrichment Culture Obtained From a Stratified Lake
Impact of Electron Acceptor Availability on Methane-Influenced Microorganisms in an Enrichment Culture Obtained From a Stratified Lake Open
Methanotrophs are of major importance in limiting methane emissions from lakes. They are known to preferably inhabit the oxycline of stratified water columns, often assumed due to an intolerance to atmospheric oxygen concentrations, but li…
View article: Methane oxidation in anoxic lake water stimulated by nitrate and sulfate addition
Methane oxidation in anoxic lake water stimulated by nitrate and sulfate addition Open
Summary Methanotrophic bacteria play a key role in limiting methane emissions from lakes. It is generally assumed that methanotrophic bacteria are mostly active at the oxic‐anoxic transition zone in stratified lakes, where they use oxygen …
View article: Greenhouse Gas Emissions from Reservoir Water Surfaces: A New Global Synthesis
Greenhouse Gas Emissions from Reservoir Water Surfaces: A New Global Synthesis Open
Collectively, reservoirs created by dams are thought to be an important source of greenhouse gases (GHGs) to the atmosphere. So far, efforts to quantify, model, and manage these emissions have been limited by data availability and inconsis…