Forest Practices Code, Province of B.C.

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This Forest Practices Code Guidebook is presented for information only

It is not cited in regulation. The Forest and Range Practices Act and its regulations took effect on Jan. 31, 2004. This replaced the Forest Practices Code of British Columbia Act and regulations. For further information please see the Forest and Range Practices Act.

Terminal Weevils Guidebook

November 1996


Authority

Water Act
Forest Practices Code of British Columbia Act
Operational Planning Regulation
Forest Road Regulation
Timber Harvesting Practices Regulation
Silviculture Practices Regulation
Range Practices Regulation

Introduction

Life history and biology

Impacts of terminal weevils

Management strategies

Glossary

References

Figures

  1. Diagrams showing, clockwise from upper left, spruce weevil chip cocoons with emergence holes, adult weevil recently emerged from spruce leader, and shepherd’s crook and multiple leaders of attacked spruce
  2. Diagrams showing, clockwise from upper left, lodgepole terminal weevil feeding puncture with egg and fecal pellet in lodgepole pine terminal, larva in pith, pupa, adult on needles, and old attack causing a fork
  3. Typical course of a spruce weevil outbreak on open-grown Sitka spruce in B.C.
  4. Defects caused by terminal weevil attack
  5. Simulated typical losses in merchantable volumes at three weevil attack rates in open-grown Sitka spruce plantations on the south coast of British Columbia
  6. Decision chart for assessing the feasibility of rehabilitating spruce stands heavily damaged by spruce weevil
  7. Definition of stagnated height growth

Tables

  1. Common and scientific names and hosts of the two most important species of terminal weevils in British Columbia
  2. Life history and symptoms following attack by the spruce weevil and lodgepole terminal weevil
  3. Symptoms of terminal weevil attack

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