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Skip to Search Results- 9Graduate and Postdoctoral Studies (GPS), Faculty of
- 9Graduate and Postdoctoral Studies (GPS), Faculty of/Theses and Dissertations
- 4Biological Sciences, Department of
- 4Biological Sciences, Department of/Journal Articles (Biological Sciences)
- 3Renewable Resources, Department of
- 3Renewable Resources, Department of/Journal Articles (Renewable Resources)
- 1Korver, Doug (Agricultural, Food and Nutritional Science)
- 1Korver, Doug (Agriculture, Food and Nutritional Science)
- 1Mager, Diana (Department of Agricultural, Food and Nutrition Science)
- 1Richard, Caroline (Department of Agricultural, Food and Nutritional Science)
- 1Schindler, David (Biological Sciences)
- 1Shotyk, William (Renewable Resources)
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A study of low chlorophyll levels relative to high phosphorus and nitrogen levels in prairie saline lakes
Download1986
Masters thesis. Results of an extensive study of Fluevog, Peninsula and Oliva lakes in eastern Alberta.
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Carbon and energy exchange by a black spruce – moss ecosystem under changing climate: testing the mathematical model ecosys with data from the BOREAS experiment
Download2001
Grant, R.F., Berry, J.A., Wofsy, S.C., Goulden, M.L.
There is some uncertainty whether net ecosystem productivity (NEP) of boreal black spruce forests is positive or negative under current climates and how NEP would change under hypothesized changes in future climates. The mathematical model ecosys was used to examine NEP of a boreal black spruce...
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Controls on carbon and energy exchange by a black spruce–moss ecosystem: Testing the mathematical model Ecosys with data from the BOREAS Experiment
Download2001
Massheder, J.M., Berry, J.A., Scott, S.L., Rayment, M., Jarvis, P.G., Grant, R.F., Hale, S.E., Moncrieff, J.B.
Stomatal limitations to mass and energy exchange over boreal black spruce forests may be caused by low needle N concentrations that limit CO(2) fixation rates. These low concentrations may be caused by low N uptake rates from cold boreal soils with high soil C:N ratios and by low N deposition...
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Ecological controls on net ecosystem productivity of a mesic arctic tundra under current and future climates
Download2011
Dimitrov, D. D., Grant, R. F., Lafleur, P. M., Humphreys, E. R.
Abstract: Changes in arctic C stocks with climate are thought to be caused by rising net primary productivity (NPP) during longer and warmer growing seasons, offset by rising heterotrophic respiration (Rh) in warmer and deeper soil active layers. In this study, we used the process model ecosys to...
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Effects of dietary phosphorus and calcium levels and phytase supplementation on bone metabolism of egg-laying hens
DownloadFall 2018
The importance of this Ph.D. thesis work is to assess the effects of dietary available phosphorus (avP) and calcium (Ca) levels and phytase supplementation in egg-laying hens and broilers. Two trials were conducted to evaluate the effects of marginal, moderate, and severe reduction in dietary avP...
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Effects of phytase in laying hen diets reduced in available phosphorus and calcium on productivity, eggshell quality, and bone mineralization of white egg layers
DownloadSpring 2021
Phosphorus and Ca are essential for maintaining egg production and bone health of laying hens. The effects of marginal or moderate reductions in available P (aP) and Ca in layer diets, with or without phytase supplementation on performance, egg production, apparent ileal digestibility (AID) and...
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Effects of Root Zone pH, Calcium and Phosphorus Supply on Selected Boreal Forest Plant Species
DownloadSpring 2015
Soil pH is among the major environmental factors affecting plant growth. In the reclaimed areas following open-pit oil sands mining in northeastern Alberta, Canada, the pH of reclaimed soil is commonly higher than 8.0. The optimum range of soil pH for growth and the tolerance of pH extremes...
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Fish Assemblages in Subarctic Lakes: Does Fire Affect Fish–Environment Relations in Northern Alberta?
Download2004
Tonn, W. M., Scrimgeour, G. J., Paszkowski, C. A., Aku, P. K. M., Boss, S. M.
In 1995, a wildfire swept through a large area of the Caribou Mountains, a remote subarctic plateau of northern Alberta, Canada, containing numerous unstudied and unexploited small lakes. To assess near-term effects of fire and to establish information on assemblage–environment relations in this...
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Impacts on Water Quality at a Newly Opened and Extracted Peatland: Influence of Internal Processes and Hydrological Connectivity in Horticultural Peat Harvesting
DownloadSpring 2024
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...
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Interannual variability in trophic status of shallow lakes on the boreal Plain: Is there a climate signal?
Download2008
Devito, K.J., Bayley, S.E., Creed, I.F., Sass, G.Z.
We explored relations between climate and trophic status of shallow lakes (lake area > 5 ha, mean depth < 3.2 m) located on the subhumid western Boreal Plain of Canada. Correlation and regression analyses were used to assess the association between indicators of climate and satellite-based...