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Filtering by: Subject Water -- Phosphorus content -- Oregon

An Ecoregion-Based Reference Condition and Classification Scheme for Determining Nutrient Criteria in Oregon Lakes

Creator:

Brenner, Jacqueline M.

Abstract:

The anthropogenic introduction of nutrients to water bodies has been shown to alter the structure and function of natural aquatic ecosystems, yet national EPA lake and reservoir nutrient criteria remain too broad for effective regional water quality management. This study uses a reference site approach to propose numeric nutrient criteria...

Resource Type:

Masters Thesis
Oregon coastal lake study : phosphorus loading and water quality implications

Creator:

Blair, Michael Stuart

Abstract:

A study of phosphorus loading and water quality implications was conducted for the Oregon coastal lakes. The study was based on existing data for lake total phosphorus concentrations and for watershed land uses. A phosphorus mass-balance model was developed to predict lake total phosphorus concentrations from estimated phosphorus loading from...

Resource Type:

Masters Thesis
The short term temporal and spatial variability of nitrogen and phosphorus in two Oregon Coast Range streams

Creator:

Scherer, Robert A.

Abstract:

High intensity sampling was undertaken to characterize the temporal and spatial variability of oxidized nitrogen (NO3-N + NO2-N), ammonia-nitrogen (NH3-N), total dissolved phosphorus, total unfiltered phosphorus and orthophosphorus (PO4-P) from two adjacent small streams in Western Oregon's Coast Range, Deer Creek (303 ha) and Flynn Creek (203 ha). Deer Creek...

Resource Type:

Masters Thesis