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Filtering by: Creator Hauck, M. Committee Member Field, Jennifer

Application of nitrogen stable isotopes to identify sources of nutrient pollution : a management tool?

Creator:

Redon, Elizabeth A.

Abstract:

Nutrient pollution may perhaps be one of the oldest water quality problems and has recently been considered as one of the greatest threats to estuarine and coastal waters. Excessive nutrient loads have had a vast array of impacts on estuarine and coastal ecosystems globally. Direct negative effects include: shading out...

Resource Type:

Masters Thesis

Full Text:

at the Sediment Surface Methanogenesis (m) 11 Hypoxia can play an important role in structuring
Impacts of Reduced Tillage and Disturbance on Soil Health and Microbial Community Dynamics in Grass Seed Cropping Systems

Creator:

Zamora, Cesar G.

Abstract:

In Oregon perennial and annual grass seed cropping systems conservation management practices and their impacts on soil health and soil microbial community is not well understood. There is strong motivation to employ conservation tillage and other conservation practices to curb atmospheric carbon levels and improve soil health. However, the few...

Resource Type:

Masters Thesis

Full Text:

soils with 0.02 M calcium chloride solution following the hot water method (Bingham, 1982) with
New Insights on the Southern Ocean Carbon Cycle from Biogeochemical Argo Floats

Creator:

Williams, Nancy L.

Abstract:

The Southern Ocean plays an important role in the ocean’s uptake of heat and carbon yet the processes controlling this uptake are not well understood. To date, more than 100 biogeochemical profiling floats that measure water column pH, oxygen, nitrate, fluorescence, and backscattering at 10-day intervals have been deployed throughout...

Resource Type:

Dissertation

Full Text:

...............................................................................................71 4.8 Surface and subsurface (200 m) SOCCOM float-based climatological seasonal cycles in