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Filtering by: Creator Karchesy, Joe Advisor Lajtha, Kate Degree Name Master of Science (M.S.)

Reactive polyphenols and dissolved nutrients in a nitrogen-limited headwater catchment, western Cascades, Oregon, USA

Creator:

Rasmussen, Janet K.

Abstract:

In undisturbed N-limited forested catchments, DON may represent over 90% of the total N lost in streams. Some ecologists have suggested that plant-derived reactive polyphenols may be responsible for DON binding and transport because polyphenol-protein complexes are known to precipitate out of solution, bind to mineral surfaces or organic matter...

Resource Type:

Masters Thesis

Full Text:

. Joe Karchesy was always available for questions and supported my sometimes unconventional approaches
Expression of secondary metabolites following manipulations of the C:N ratio in spotted knapweed, Centaurea maculosa Lam.

Creator:

Brodhagen, Marion L.

Abstract:

Spotted knapweed, Centaurea maculosa Lam. (Compositae) is an extremely successful introduced weed species in the northwestern United States. Multiple factors may be responsible for its success, including chemical defense. Two different types of putative chemical defense agents are the focus of this thesis. The first is a bitter-tasting sesquiterpene lactone,...

Resource Type:

Masters Thesis

Full Text:

products chemistry in the commercial world. Thanks to Yvette and Joe Karchesy for letting me invade their