The Relationship Between Wood Density and Growth Rate and the Implications for the Selection of Black Spruce (Picea Mariana (Mill.) B.S.P.) Plus Trees
The Relationship Between Wood Density and Growth Rate and the Implications for the Selection of Black Spruce (Picea Mariana (Mill.) B.S.P.) Plus Trees

Author: J. Peter Hall

Publisher: St. John's : Newfoundland Forest Research Centre

Published: 1984

Total Pages: 22

ISBN-13: 9780662134732

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The relationship between growth rate and wood density wasexamined in 12 natural stands of black spruce in Newfoundland.Growth rate and density were not closely related. Nogeographical trends in wood density or growth rate were observedand within-stand variation was considerably greater for growthrate than for density. A method of selection of plus trees for atree improvement program is suggested which combines the factorsof rapid growth rate and high wood density in the selected tree.

Component Biomass Equations for Black Spruce in Maine
Component Biomass Equations for Black Spruce in Maine

Author: Miroslaw M. Czapowskyj

Publisher:

Published: 1985

Total Pages: 12

ISBN-13:

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S2Component biomass prediction equations are presented for young black spruce (Picea mariana B.S.P. (Mill.)) in northern Maine. A weighted least squares model was used to construct the equations for small trees from 1 to 15 cm d.b.h., and an ordinary least squares model for trees less than 2 m in height. A linearized allometric model was also tested but was not used. Equations were developed for oven-dry needle, branch, bolewood, bolebark, aboveground, root, and complete tree biomass components. Aboveground components accounted for approximately 80 percent, and stump (less than 6 cm in height) plus roots accounted for 20 percent of the complete tree oven-dry biomass accumulation.S3.

A Key for Predicting Postfire Successional Trajectories in Black Spruce Stands of Interior Alaska
A Key for Predicting Postfire Successional Trajectories in Black Spruce Stands of Interior Alaska

Author: Jill Frances Johnstone

Publisher:

Published: 2008

Total Pages: 46

ISBN-13:

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Black spruce (Picea mariana (Mill) B.S.P) is the dominant forest cover type in interior Alaska and is prone to frequent, stand-replacing wildfires. Through impacts on tree recruitment, the degree of fire consumption of soil organic layers can act as an important determinant of whether black spruce forests regenerate to a forest composition similar to the prefire forest, or to a new forest composition dominated by deciduous hardwoods. Here we present a simple, rule-based framework for predicting fire-initiated changes in forest cover within Alaska's black spruce forests. Four components are presented: (1) a key to classifying potential site moisture, (2) a summary of conditions that favor black spruce self-replacement, (3) a key to predicting postfire forest recovery in recently burned stands, and (4) an appendix of photos to be used as a visual reference tool. This report should be useful to managers in designing fire management actions and predicting the effects of recent and future fires on postfire forest cover in black spruce forests of interior Alaska.