Search
Skip to Search Results- 185Renewable Resources, Department of
- 185Renewable Resources, Department of/Journal Articles (Renewable Resources)
- 19Agricultural, Life, and Environmental Sciences, Faculty of
- 14Agricultural, Life, and Environmental Sciences, Faculty of/Rangeland Research Institute (RRI)
- 5Agricultural, Life, and Environmental Sciences, Faculty of/Journal Articles (Agricultural, Life, & Environmental Sciences)
- 1Human Ecology, Department of
-
2020-01-08
Wen-Qing Zhang, Killian Fleurial, Ira Sherr, Robert Vassov, Janusz J. Zwiazek
Bitumen recovery from oil sands in northeastern Alberta, Canada produces large volumes of tailings, which are deposited in mining areas that must be reclaimed upon mine closure. A new technology of non-segregated tailings (NST) developed by Canadian Natural Resources Limited (CNRL) was designed...
-
Growth responses of 20 boreal forest species to oil sandsnon-segregating tailings: significance for reclamation
Download2023-01-24
Wen-Qing, Zhang, Killian G. Fleurial, Michelle Moawad, Robert Vassov, Ellen Macdonald, Janusz J. Zwiazek
Oil sands mining in northeastern Alberta, Canada, generates tailings containing sand, silt, clay, water, and residual bitumenwith hydrocarbons. The impact of tailings on revegetation is a major environmental concern and poses a significant land rec-lamation challenge. Oil sands companies have...
-
Heterogeneous distribution of pectin epitopes and calcium in different pit types of four angiosperm species
Download2011
Intervessel pits act as safety valves that prevent the spread of xylem embolism. Pectin–calcium crosslinks within the pit membrane have been proposed to affect xylem vulnerability to cavitation. However, as the chemical composition of pit membranes is poorly understood, this hypothesis has not...
-
High levels of green-tree retention are required to preserve ground beetle biodiversity in boreal mixedwood forests
Download2010
Jacobs, J.J., Volney, W.J.A., Work, T.T., Spence, J.R.
Recovery of biodiversity and other ecosystem functions to pre-disturbance levels is a central goal of natural disturbance-based approaches to ecosystem management. In boreal mixedwood forests, green-tree retention has been proposed as an alternative approach to traditional clearcutting that may...
-
2007
Hacke, Uwe G., Feild, Taylor S., Sano, Yuzuo, Sperry, John S., Sikkema, Elzard H.
We tested two hypotheses for how vessel evolution in angiosperms influenced xylem function. First, the transition to vessels decreased resistance to flow—often considered the driving force for their evolution. Second, the transition to vessels compromised safety from cavitation—a constraint...
-
2007
Sano, Yuzuo, Hacke, Uwe G., Sperry, John S., Sikkema, Elzard H., Feild, Taylor S.
We tested two hypotheses for how vessel evolution in angiosperms influenced xylem function. First, the transition to vessels decreased resistance to flow—often considered the driving force for their evolution. Second, the transition to vessels compromised safety from cavitation—a constraint...
-
2007
Feild, T., Sperry, J.S., Sano, Y., Sikkema, E.H., Hacke, U.G.
We tested two hypotheses for how vessel evolution in angiosperms influenced xylem function. First, the transition to vessels decreased resistance to flow-often considered the driving force for their evolution. Second, the transition to vessels compromised safety from cavitation-a constraint...
-
2012
For much of the history of Alberta’s tar sands, a series of visual conventions have shaped Canadian imaginaries of the resource, the emergence of the non-conventional oil industry, and the mining of oil. We introduce a series of archival images dating from 1880 until the opening of Great Canadian...
-
Impacts of climate change from 2000 to 2050 on wildfire activity and carbonaceous aerosol concentrations in the western United States
Download2009
Mickley, L.J., Westerling, A.L., Logan, J.A., Hudman, R.C., Flannigan, M.D., Spracklen, D.V., Yevich, R.
We investigate the impact of climate change on wildfire activity and carbonaceous aerosol concentrations in the western United States. We regress observed area burned onto observed meteorological fields and fire indices from the Canadian Fire Weather Index system and find that May-October mean...