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2007

Johnson, S.J., Carroll, R.T., Vidmar, J.J., Stroeher,V., Taylor, G.T., Good, A.G., DePauw, M., Lu, Z., Savidov, N.

Nitrogen (N) is the most important factor limiting crop productivity worldwide. The ability of plants to acquire N from applied fertilizers is one of the critical steps limiting the efficient use of nitrogen. To improve N use efficiency, genetically modified plants that overexpress alanine...

2016

Yau, Andrew W., Sydorenko, Dmytro, Rankin, Robert

An advanced two-dimensional numerical model of the coupled ionosphere and magnetosphere is used to analyze EISCAT observations of ULF waves that are accompanied by electron precipitation with a wide energy spectrum. The observations show columns of significantly enhanced electron density produced...

Fall 2012

Begam, Rowshon A

The distribution of amino acids (AAs) in plants is a complex process that involves 67 amino acid transporters (AATs) in Arabidopsis, many of which have yet to be characterized. The L-type Amino acid Transporter (LAT) family, which in Arabidopsis contains five members, remained uncharacterized in...

2000

Stratford, Kevin, Williams, Richard G., Myers, Paul G.

The role of the thermohaline circulation in controlling export production, oxygenation of deep waters, and hence possible sapropel formation in the eastern Mediterranean is examined using a simple nutrient-cycling model. The model is driven by velocity fields from a general circulation model and...

Spring 2024

Little-Devito, Mika

Horticultural peat harvesting continues to expand in Canada, yet the impact to downstream water quality during the initial stages of peatland opening and peat extraction are poorly understood. Major changes can occur to the hydrology and internal processes within a peatland during the transition...

Fall 2020

Collins, Catherine

Alberta’s oil sands generate large volumes of tailings from bitumen ore processing. These tailings ponds produce biogenic methane, which can be measured across 60-80% of the tailings surface. Based on current surface area data and emissions studies, tailings ponds could account for 8% of Canada’s...

Fall 2013

Collins, Catherine Elizabeth Victoria

Surface mining for bitumen extraction results in production of tailings that are deposited into large ponds. Tailings in the ponds support diverse microbial communities capable of metabolizing organic compounds and producing biogenic gases (methane, CH4 and carbon dioxide, CO2). Because of low...

2014-05-19

Stern, Richard A.

This report describes the methods and samples utilized (to 2014) within the Canadian Centre for Isotopic Microanalysis (CCIM), University of Alberta, for routine analysis of δ13CVPDB, δ15NAIR, and N abundances of diamonds by secondary ion mass spectrometry (Cameca IMS 1280). Analyses by...

Fall 2009

Li, Xiangfei

In remotely located forest watersheds, monitoring nitrogen (N) in streams often is not feasible because of the high costs and site inaccessibility. Therefore, modelling tools that can predict N in unmonitored watersheds are urgently needed to support management decisions for these watersheds....

2008

Bayley, S.E., Wray, H.E.

The overall objective of this study was to measure the major nitrogen pools and fluxes in nutrient- and peat-rich, vegetated marshes and fens surrounding shallow ponds in the Western Boreal Plain (WBP) of Canada. Within the same peatland-pond complex, marshes and fens did not differ from each...