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Filtering by: Subject Douglas fir -- Effect of drought on Advisor Maguire, Douglas A.

Impact of Climate and Disturbance on the Formation of Earlywood and Latewood in Douglas-fir at the Salal Fields Study Site

Creator:

Gourley, Derek M. F.

Abstract:

Wood density is controlled to a large extent by the relative widths of earlywood and latewood in the stem, but the mechanisms controlling these amounts are poorly understood in coastal Douglas-fir. To understand the role of climatic factors, one hundred and thirty-six increment cores were collected and measured from the...

Resource Type:

Masters Thesis

Full Text:

Impact of Climate and Disturbance on the Formation of Earlywood and Latewood in Douglas-fir at the Salal
Soil-site productivity relationships of central Oregon ponderosa pine

Creator:

Wilson, Duncan Steil, 1969-

Abstract:

The relationship between annual foliage production and nitrogen and water stress was examined in 14 naturally regenerated, mid-rotation ponderosa pine stands in central Oregon. Current-year and older foliage masses, and foliage nitrogen contents and concentration were estimated from 132 destructively sampled trees. Litterfall mass and nitrogen retranslocation rates from senescing...

Resource Type:

Dissertation