Wood Density of Canadian Tree Species

Wood Density of Canadian Tree Species PDF

Author: J. S. Gonzalez

Publisher: Edmonton, Alta. : Forestry Canada, Northwest Region, Northern Forestry Centre

Published: 1990

Total Pages: 142

ISBN-13:

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Total-stem and breast-height wood density data from published and unpublished sources are presented for Canadian tree species grown in and outside of Canada. Calculations for mean density and coefficient of variation were made when necessary. Variations, geographic sources, and characteristics of sample trees are included to assist the reader in making comparisons with the density values presented. Sampling locations, methods of sampling, and density calculations are described. To assist the reader in converting wood density values from green-volume to ovendry-volume basis, the conversion formula and a table of percent volumetric shrinkage are also presented.

Advances in Ecological Research

Advances in Ecological Research PDF

Author:

Publisher: Academic Press

Published: 1986-02-07

Total Pages: 436

ISBN-13: 9780080566993

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Jarvis and McNaughton provide a cogent example of the impact of physiological studies in ecology. The study of transpiration is of basic importance in botany and their paper shows how the often conflicting conclusions reached by physiological ecologists and micrometeorologists may be reconciled. Courtney's analysis of Pereid butterfly ecology looks at the various evolutionary strategies adopted by the butterflies, their food plants and their predators and parasites. Franklin and his colleagues have distilled years of research on the decomposition of woody debris into a comprehensive treatment of both the nature and importance of this process in a variety of environments. Vogt and her colleagues also deal with an aspect of decomposition, focusing instead on the importance of the death and decay of root material. Finally, Hartenstein presents a lively discussion on the serious consequences of soil organic carbon deficiency. Combining man made organic waste and earthworm based biotechnology might help in managing carbon poor soils.****FROM THE PREFACE: Over recent years physiological plant ecology has been one of the most active areas of ecological research. It offers a prospect of explaining community function in terms of how the physiological properties of individual plants relate to patterns of microclimate generated in the community itself. However, the strategies of investigation and measurement techniques of the physiological ecologist frequently require very detailed work on just small amounts of material. Providing an integrated assessment of community function from such investigations may not be straightforward.