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Filtering by: Subject Forest soils -- Nitrogen content -- Sweden Advisor Pett Ridge, Julie Degree Name Master of Science (M.S.)

Interactions between ecosystem nitrogen and bedrock control long-term calcium sources in Oregon Coast Range forests

Creator:

Hynicka, Justin D.

Abstract:

Ecosystem nitrogen (N) supply strongly influences the availability and cycling of other essential nutrients in temperate forests, especially calcium (Ca). Short-term additions of N that exceed ecosystem demands often increase dissolved nitrate fluxes and decrease soil pH, which can stimulate soil Ca loss. However, the long-term effects of high N...

Resource Type:

Masters Thesis

Full Text:

. Hynicka for the degree of Master of Science in Forest Ecosystems and Society and Soil Science presented
Interactions between nitrogen, phosphorus, and molybdenum in forest soils and cyanobacterial lichen in the Oregon Coast Range

Creator:

Marks, Jade A.

Abstract:

Molybdenum is an essential component of biogeochemical cycling, most notably as a component of the nitrogenase enzyme used in biological nitrogen (N) fixation. While the important role of phosphorus (P) in limiting N fixation in ecosystems has been well documented, occurrence and prevalence of molybdenum (Mo) limitation is largely unknown....

Resource Type:

Masters Thesis

Full Text:

Page 2.1: Soil chemistry, carbon and nitrogen content, of twenty-four sites across the Oregon