Index Catalog // ScholarsArchive@OSU

Start Over

Filtering by: Advisor Pett-Ridge, Julie Advisor Pett Ridge, Julie C.

Concentration-Runoff Relationships of Contrasting Small Mountainous Rivers in the Pacific Northwest, USA: Insights into the Weathering of Rhenium

Creator:

Ghazi, Layla

Abstract:

This study examines dissolved rhenium (Re) as a function of water runoff using river samples from two contrasting watersheds, the Eel and Umpqua Rivers in the Pacific Northwest, USA. These watersheds share many key characteristics in terms of size, discharge, climate, and vegetation, but they have a 10-fold difference in...

Resource Type:

Masters Thesis

Full Text:

: ______________________________________________________ Julie Pett-Ridge This study examines dissolved rhenium (Re) as a function of water
Understanding Molybdenum Isotope Dynamics in Terrestrial Environments

Creator:

King, Elizabeth K.

Abstract:

This dissertation works towards determining the mechanisms driving the Mo isotopic composition of soils, and how these signals may be used to refine the use of Mo as a proxy of biogeochemical processes. The first step towards quantifying Mo fractionation in soils is to determine the mechanisms controlling Mo accumulation,...

Resource Type:

Dissertation

Full Text:

: _____________________________________________________ Julie C. Pett-Ridge This dissertation works towards determining the mechanisms driving
An Analysis of Nutrient Depletion in Douglas-fir Forests of the Oregon Coast Range

Creator:

Siah, Kaveh G.

Abstract:

Nutrient limitation constrains tree growth in many managed forests. Nitrogen (N) is the most common limiting nutrient, but high N supply can shift limitation to other nutrients, particularly phosphorus (P) and the base cations calcium (Ca), magnesium (Mg), and potassium (K). As different soil minerals have different capacities to supply...

Resource Type:

Masters Thesis

Full Text:

Julie Pett-Ridge Nutrient limitation constrains tree growth in many managed forests. Nitrogen