Notes: Specific Leaf Area of Douglas-fir Reproduction As Affected by Light and Needle Age
Measurements of leaf area on young natural Douglas-fir (Pseudotsuga menziesii) growing in the shade of a managed Douglas-fir forest suggest that specific leaf area (cm²/g) is negatively linear to a logarithmic transformation of daily sunlight received at the crown. This appears true from full sunlight to as low as 1.28 percent of full sunlight. Specific leaf area is also influenced by age of needles. These results indicate that leaf morphology of Douglas-fir is sensitive to the particular light regime in which a tree grows, that all degrees of shade leaves exist, and that strategies for survival change with environment. Forest Sci. 25:183-186.
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Document Type: Miscellaneous
Affiliations: Professor of Forest Ecology, School of Forestry, Oregon State University, Corvallis, Oregon
Publication date: 1979-03-01
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- 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.
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