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Filtering by: Subject Stream mapping -- Oregon -- Willamette River Degree Name Doctor of Philosophy (Ph.D.)

Land cover change along the Willamette River, Oregon

Creator:

Oetter, Doug Rudolph, 1962-

Abstract:

The Willamette River and its floodplain in northwest Oregon have changed dramatically since European settlement. At one time, the river was a vast complex system of braided channels with a broad floodplain forest; it has now been simplified by channelization and dams, and the forest has been removed to support...

Resource Type:

Dissertation
Linkages among land use, riparian zones, and uptake and transformation of nitrate in stream ecosystems

Creator:

Sobota, Daniel J.

Abstract:

Land use alters the physical and biological structure of stream ecosystems and potentially alters their capacity to process nitrogen (N), an essential nutrient that has nearly doubled in abundance on the biosphere during the past century from human activities. In this dissertation, I quantified uptake and transformation of nitrate (NO₃⁻)...

Resource Type:

Dissertation

Full Text:

Willamette River basin, Oregon, USA……………….59 11. (A) Mean daily discharge and temperature and (B) stream