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Filtering by: Species diversity Subject Birds -- Habitat -- Oregon -- Willamette River Valley

Conserving avian diversity in agricultural systems : the role of isolated Oregon white oak legacy trees

Creator:

DeMars, Craig A.

Abstract:

Over one third of the earth’s land surface has been modified to some extent for agricultural purposes. The large global footprint of agriculture, combined with the knowledge that existing reserve networks are likely insufficient for long-term conservation of native biodiversity, has necessitated that agricultural systems contribute to conservation of native...

Resource Type:

Masters Thesis

Full Text:

. Title: Conserving Avian Diversity in Agricultural Systems: the Role of Isolated Oregon White Oak Legacy
60 years of avian community change in the Willamette Valley, Oregon

Creator:

Curtis, Jenna

Abstract:

Birds perform valuable ecological functions and are useful environmental indicators. Avian distributions and diversity are predicted to change over the next 50 years. Little information exists on the role of local and regional conditions in fluctuations of avian communities over time. Historic datasets present a legacy of information that helps...

Resource Type:

Masters Thesis
Bird Abundance and Microhabitat Associations with Oak Mistletoe in Willamette Valley Oak Woodlands

Creator:

Pritchard, Kyle R.

Abstract:

In the last 200 years there have been significant declines in the amount and structural complexity of oak-dominated forests and savannahs in the Pacific Northwest. Restoring oak systems often involves selectively thinning stands of oaks in order to reduce competition for sunlight. In choosing which trees to cut, land managers...

Resource Type:

Masters Thesis

Full Text:

). These rare species contribute to the overall species diversity of oak woodlands. One reason oaks