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How Much is an Evening Grosbeak Worth?

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Abstract:

Birds consume large numbers of the western spruce budworm (Choristoneura occidentalis), a forest insect which defoliates economically valuable stands. We estimated the economic value of bird predation on two stands in north-central Washington by substituting the cost to spray with insecticides to produce the same mortality rate as birds cause. It would cost at least $1,820 per square km per year over a 100-year rotation. This figure may be used to appraise the value of individual predator species, such as the voracious evening grosbeak (Hesperiphona vespertina), to evaluate the cost-effectiveness of biological control with birds, and to assess silvicultural treatments and other practices which affect both bird and insect numbers.

Document Type: Journal Article

Affiliations: Associate Professor of Wildlife in the Department of Fish and Wildlife at the University of Idaho

Publication date: 1984-07-01

More about this publication?
  • The Journal of Forestry is the most widely circulated scholarly forestry journal in the world. In print since 1902, the Journal has received several national awards for excellence. The mission of the Journal of Forestry is to advance the profession of forestry by keeping forest management professionals informed about significant developments and ideas in the many facets of forestry: economics, education and communication, entomology and pathology, fire, forest ecology, geospatial technologies, history, international forestry, measurements, policy, recreation, silviculture, social sciences, soils and hydrology, urban and community forestry, utilization and engineering, and wildlife management. The Journal is published bimonthly: January, March, May, July, September, and November.

    2015 Impact Factor: 1.476
    Ranking: 22 of 66 in forestry

    Average time from submission to first decision: 39.6 days*
    June 1, 2016 to Feb. 28, 2017

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    Forest Science
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