Ten-year Height Growth of Open-pollinated Black Spruce Families in Ontario
Ten-year Height Growth of Open-pollinated Black Spruce Families in Ontario

Author: Timothy James Butler Boyle

Publisher: Chalk River, Ont. : Petawawa National Forestry Service

Published: 1986

Total Pages: 36

ISBN-13:

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Results of 10-year height growth in three series of open-pollinated progenytests of black spruce, in three site regions of northern Ontario, are presented. Estimates of narrow sense heritability from individual testsites ranged from 0 to 0.399 for single trees and from 0 to 0.896 for families, with averages of 0.169 and 0.663 respectively. Estimates frommulti-location analyses ranged from 0.099 to 0.152, with an average of0.124 for single trees, and from 0.836 to 0.930, with an average of 0.884for families. The family x environment interaction was significant in allthree series. By means of an overlapping cluster analysis method, geneticbreeding zones were delineated for each site region. Proposals are made forbreeding zones which take account of both genetic breeding zones and administrative boundaries.

Geographic Variation in Forest Trees
Geographic Variation in Forest Trees

Author: Maria Morgenstern

Publisher: UBC Press

Published: 2011-11-01

Total Pages: 224

ISBN-13: 077484177X

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Geographic Variation in Forest Trees is the first book to examine this subject from a world-wide perspective. The author discusses population genetic theory and genetic systems of native North American tree species as they interact with environments in the major climatic regions in the world. He then demonstrates how this knowledge is used to guide seed zoning and seed transfer in silviculture, basing much of his discussion on models developed in Scandinavia and North America. In the final chapter, the author addresses the issue of genetic conservation -- a subject of great concern in the face of accelerated forest destruction, industrial pollution, and climatic change. This comprehensive, well-researched book makes a significant contribution to the knowledge of one of our most important renewable natural resources.

Assessing Assisted Migration as a Climate Change Adaptation Strategy for Ontario's Forests
Assessing Assisted Migration as a Climate Change Adaptation Strategy for Ontario's Forests

Author: Ngaire Eskelin

Publisher:

Published: 2011

Total Pages: 56

ISBN-13:

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Assisted migration of tree species populations, or seed sources, is one of few adaptive strategies available to mitigate the projected effects of climate change on the structure, productivity, and distribution of forest ecosystems. In this report, the authors present the goals and objectives of a study intiated in 2008 to assess the potential of assisted migration as an adaptation strategy to manage for climate change in Ontario. In support of this study, they conducted a literature search on assisted migration and genetic variation in climatic response of forest tree species, through which were identified several hundred related scientific and technical publications. Citations and keywords for publications of greatest significance to using assisted migration as a climate change adaptation strategy are presented in the accompanying bibliography.--Document.