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Filtering by: Subject Ponderosa pine -- Drought tolerance -- Oregon

The expression of functional traits during seedling establishment in two populations of Pinus ponderosa from contrasting climates

Creator:

Kerr, Kelly L.

Abstract:

Vegetation patterns and species distributions are strongly linked to soil moisture regimes, and populations within a species from contrasting climatic regimes could exhibit differences in the degree to which certain functional traits related to establishment are expressed. Tree seedling survival is crucial for forest regeneration, and thus may be a...

Resource Type:

Masters Thesis

Full Text:

of ponderosa pine (Pinus ponderosa) from sites with contrasting climate regimes east (PIPOEAST) and
Physiology of drought stress in Pinus ponderosa (Dougl. ex Laws.) and the influence of low irradiance

Creator:

Vance, Nan C.

Resource Type:

Dissertation
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
Tree Vigor Response and Competitive Zone Density in Mature Ponderosa Pine

Creator:

Shaw, Randi C.

Abstract:

This study explored the relationship of mature ponderosa pine (Pinus ponderosa Dougl. ex Laws) tree vigor and competitive zone density following thinning and fuel reduction treatments. Competitive zone density (CZD) was defined as the total tree basal area (m²/ha) surrounding a given ponderosa pine tree within a 10m fixed radius...

Resource Type:

Masters Thesis

Full Text:

separate mature ponderosa pine stands in south- central Oregon, Lookout Mountain (LM), and Sycan Marsh (SY