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Publication Title: Effect of habitat and substrate quality on Douglas fir litter decomposition in western Oregon
Year: 1977 Publication Type: Journal Article
H. J. Andrews Publication Number: 524
Citation: Fogel, Robert; Cromack, Kermit Jr. 1977. Effect of habitat and substrate quality on Douglas fir litter decomposition in western Oregon. Canadian Journal of Botany. 55(12): 1632-1640.
Online PDF: http://andrewsforest.oregonstate.edu/pubs/pdf/pub524.pdf
Abstract: FOGEL. R.. and K. CROMACK, JR. 1977. Effect of habitat and substrate quality on Douglas fir litterdecomposition in western Oregon. Can. J. But. 55: 1632-1640. Linear regression models were developed for Douglas fir needle, female cone, branch, and harkdecomposition in seven stands representing four mature vegetation types in western Oregon.Rate constants (k) for annual weight loss of needles ranged from 0.22 to 0.31 year- ', from 0.047 to0.083 year-' for cones, from 0.059 to 0.089 year' for branches, and from 0.005 to 0.040 year' forbark. The decomposition constant (k) of needles had a negative linear correlation (P < 0.01) withmaximum plant moisture stress and temperature growth index of the seven stands. In comparingsubstrate quality of needle and woody litter components, k was more closely correlated withlignin content than with C:N ratio.
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