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- 194Renewable Resources, Department of/Journal Articles (Renewable Resources)
- 66Renewable Resources, Department of/Research Notes (Renewable Resources)
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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...
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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...
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2002
Ooi, S., van der Knaap, W. O., Hansen, T. S., Rom, W., Lange, T., Shotyk, W., Heinemeier, J., Appleyby, P. G., Lohse, C., Goodsite, M. E.
ABSTRACT. Peat deposits in Greenland and Denmark were investigated to show that high-resolution dating of these archives of atmospheric deposition can be provided for the last 50 years by radiocarbon dating using the atmospheric bomb pulse. 14C was determined in macrofossils from sequential one...
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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...
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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...
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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...
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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...
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