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Filtering by: Alternative title ssim PNW 288 Advisor Perakis, Steven S. File Format application/pdf

Tree species-soils relationships in old-growth forests of the Oregon Coast Range

Creator:

Cross, Alison

Abstract:

Tree species directly and indirectly affect soil nutrient cycles. I sought to characterize soils and foliage associated with four common canopy tree species (Douglas-fir, western hemlock, western redcedar, and bigleaf maple) in mixed-species old-growth forests of the Oregon Coast Range and to determine whether and how soils differ among the...

Resource Type:

Masters Thesis
Non-linear nitrogen dynamics and calcium depletion along a temperate forest soil nitrogen gradient

Creator:

Sinkhorn, Emily R.

Abstract:

Understanding how N availability influences base cation stores is critical for long-term ecosystem sustainability. Indices of nitrogen (N) availability and the distribution of nutrients in plant biomass, soil, and soil water were examined across ten young, unpolluted Douglas-fir (Pseudotsuga menziesii) stands in the Oregon Coast Range spanning a three-fold soil...

Resource Type:

Masters Thesis

Full Text:

. PNW-76. Tietema, A., B. A. Emmett, P. Gunderson, O. J. Kjonaas, and C. J. Koopmans. 1998. The