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Filtering by: Committee Member Pritchard, A. Non-Academic Affiliation Oregon State University. Graduate School

Model of late Pleistocene-Holocene variations in rate of sediment accumulation : Panama Basin, eastern equatorial Pacific

Creator:

Pisias, Nicklas G.

Abstract:

The assumption of constant quartz accumulation for the deep-sea sediment core Y69-106P, taken in the Panama Basin, has been used to date the core and construct a sedimentation rate versus time curve for it. Stratigraphic control for the calculated time scale includes three carbon-14 measurements, the extinction of the radiolarian...

Resource Type:

Masters Thesis
The biology and behavior of the alkali bee Nomia melanderi Cockerell (Hymnoptera: Apoidea)

Creator:

Hackwell, Glenn Alfred

Abstract:

Nomia melanderi Cockerell is one of the most efficient pollinators of alfalfa in Eastern Oregon. Emergence begins in June, usually reaches its peak in early July, and may continue into early August. Male emergence precedes female emergence by four or five days. For the first few weeks of this time,...

Resource Type:

Dissertation

Full Text:

, Entomology Department Dr. A. W. Pritchard, Zoology Department Dr. W. W. Chilicote, Botany Department Dr