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Biological soil crusts in forested ecosystems of southern Oregon : presence, abundance and distribution across climate gradients

Creator:

Olarra, Jennifer A.

Abstract:

In arid and semi-arid deserts, soils are commonly covered with biological soil crusts. The study of arid biocrusts and their ecological function has become increasingly common in the literature over the last several decades. Interestingly, no mention is made of biological soil crusts in forested ecosystems, raising the question as...

Resource Type:

Masters Thesis

Full Text:

Title: Biological Soil Crusts in Forested Ecosystems of Southern Oregon: Presence, Abundance and
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:

west (PIPOWEST) of the Oregon Cascade Mountains were sown in raised soil beds in a common garden and