Ecology and Management of Sitka Spruce: Emphasizing Its Natural Range in British Columbia

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UBC Press, Aug 1, 1997 - Nature - 350 pages
Sitka spruce, the largest of the world's spruces, is an important component of British Columbia's coastal forests. Its ecology gives it a special place in the sustainable management of the province's forests. However, in west coast forestry it is poorly known in comparison with its main coniferous companions -- Douglas-fir, western redcedar, and western hemlock. As an important international forestry resource, it is crucial that Sitka spruce -- its ecology and the ecosystems in which it occurs -- be clearly understood by those who are involved with its management. This book is the most recent major work on the ecology and management of Sitka spruce. The authors describe how this fascinating tree reproduces, grows, and functions in its natural geographic range. They discuss both the ecology of Sitka spruce and silvicultural questions such as original plantation spacing, juvenile spacing, and fertilization to accelerate the harvestability of second-growth coastal spruce stands. Sitka spruce derives its importance not only from its prominence as an international transportable genetic resource but also from its role in riparian systems and its biodiversity values. Here in North America's west coast rainforest, this magnificent tree illustrates the ecology of complex forest ecosystems and their cultural, wilderness, historic, and economic values.
 

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Contents

Introduction
3
Biology and Ecology of Naturally Occurring Sitka Spruce
14
Geographic Distribution and Ecological Characteristics of Ecosystems
37
Biogeoclimatic Units Where Sitka Spruce Hybrids Occur
61
Succession on Alluvial Ecosystems in British Columbia
68
Successional Sequences in Washington and Oregon
75
Growth and Productivity
82
Nutrient Relationships and Comparisons with Other Species
89
Management of Sitka Spruce
147
StandLevel Treatments to Improve Timber Yield and Quality
172
Crop Planning
205
Density Management
221
Growth and Yield Data
228
Sitka Spruce in British Columbias Future
255
Appendices
272
Abbreviations used for tree species and for biogeoclimatic zones
280

Soil and SoilWater Relationships
95
Physical and Chemical Damaging Agents
101
Fire111
111
Some Fish Mammalian and Bird Habitat Features
136

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About the author (1997)

E.B. Peterson is a forest ecologist and president of Western Ecological Services Ltd. in Victoria, B.C. N.M. Peterson is vice president and research associate at Western Ecological Services Ltd. G.F. Weetman is a professor in the Forest Sciences Department at the University of British Columbia. P.J. Martin is a stand development specialist in the Silviculture Practices Branch, B.C. Ministry of Forests.

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