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Ecological Methods in Forest Pest Management$
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David Wainhouse

Print publication date: 2004

Print ISBN-13: 9780198505648

Published to Oxford Scholarship Online: April 2010

DOI: 10.1093/acprof:oso/9780198505648.001.0001

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Risk, monitoring and prediction

Risk, monitoring and prediction

(p.40) Chapter 3 Risk, monitoring and prediction
Ecological Methods in Forest Pest Management

David Wainhouse

Oxford University Press

Predicting where and when forest insect outbreaks are likely to affect the growth or survival of trees can make an important contribution to pest management. The scale and economic impact of pests are influenced by their outbreak and life-history characteristics, but the nature and management of forests can also be an important determinant of risk. Practical examples to illustrate these different aspects of the risk-rating of forests include outbreak history, forest composition and structure, site factors, and the growth and vigour of trees. Monitoring insect populations in high-risk forests can give advance warning of outbreaks. Monitoring can be done in a number of different ways depending on the particular objectives, whether it is required in the short or long term, and how quickly insect populations can increase to outbreak levels. Examples discussed include: aerial surveys and remote sensing; population sampling, including the use of pheromone traps; and monitoring key phenological events in the insect life cycle.

Keywords:   risk-rating, forest insect outbreaks, survival of trees, pest management, management of forests, forest composition

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