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Phenotypic Variation Associated with Elevation in Western White Pine

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Racial differentiation of Pinus monticola Dougl. associated with elevation was investigated on sample plots selected at elevations ranging from 2,500 to 4,600 feet. Periodic annual height growth was significantly less for trees at 4,600 feet than for trees at elevations ranging from 2,500 to 4,000 feet. Branch angle increased progressively and significantly with increasing elevation. Needle length and cone scale width and length between elevations differed significantly, but the pattern of variation was essentially random. For other attributes, including seed weight, no significant difference was found between elevations. There were highly significant and moderately strong correlations between many cone and seed traits. In general, cone and seed traits were not significantly correlated with growth rate or branch angle.

Document Type: Journal Article

Affiliations: Associate Professor of Forestry, School of Natural Resources, University of Michigan, Ann Arbor.

Publication date: December 1, 1967

More about this publication?
  • Forest Science is a peer-reviewed journal publishing fundamental and applied research that explores all aspects of natural and social sciences as they apply to the function and management of the forested ecosystems of the world. Topics include silviculture, forest management, biometrics, economics, entomology & pathology, fire & fuels management, forest ecology, genetics & tree improvement, geospatial technologies, harvesting & utilization, landscape ecology, operations research, forest policy, physiology, recreation, social sciences, soils & hydrology, and wildlife management.
    Forest Science is published bimonthly in February, April, June, August, October, and December.

    2015 Impact Factor: 1.702
    Ranking: 16 of 66 in forestry

    Also published by SAF:
    Journal of Forestry
    Other SAF Publications
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