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Factors influencing size inequality in peatland black spruce and tamarack: Evidence from post-drainage release growth
Download1999
1 We used tree ring analysis to determine stem radius and thus examine size variation over time in two even-aged (approximately 40-year-old) mixed populations of black spruce and tamarack established on peatlands in a boreal forest. We also followed the response of one of these populations to...
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Study of early selection in tree breeding - 3. A case study using early information to enhance selection efficiency in late trait in lodgepole pine (Pinus contorta spp. Latifolia)
Download2000
Wu, H.X., Pharis, R.P., Dhir, N.K., Yeh, F.C., Dancik, B.P.
We present a selection procedure that combines early performance from retrospective study and late performance from field testing into an index designed for enhancing the selection efficiency of the late performance. The prerequisite is that early performance from retrospective study and late...
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Maximizing gain at restricted group coancestry in selection from populations with a hiearchical structure
Download2000
A general model was derived to find a set of optimal family contributions within a single cycle of selection from populations with a strictly hierarchical structure. The model maximized genetic gain at restricted selection proportion and group coancestry, or minimized group coancestry at...
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2000
Mapfumo, E., Chanasyk, D.S., Burk, A.R.
Land management practices are known to influence runoff through alteration of the antecedent soil water For accurate estimation of runoff, direct measurement of antecedent soil water would be necessary. This study investigated antecedent soil water and the potential for summer storm runoff under...
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2000
Cumming, S. G., Schmiegelow, F. K. A., Burton, P. J.
Trembling aspen (Populus tremuloides) in western Canadian boreal forests is generally believed to occur as young, even-aged stands, as part of a fire-dominated landscape. However, the available quantitative estimates of the rate of disturbance by fire in this region differ markedly. One estimate...