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Filtering by: Creator Shivprasad, A. P. Degree Name Doctor of Philosophy (Ph.D.)

Effects of nutrient and light limitation on mountain hemlock : susceptibility to laminated root rot

Creator:

Matson, P. A. (Pamela A.)

Abstract:

Mountain hemlock forests in the Oregon Cascades exhibit wave-form dieback resulting from infection by laminated root rot (Phellinus weirii). Although Phellinus remains viable in dead roots after the wave of dieback passes, many regenerating mountain hemlock forests do not become immediately reinfected. We measured at least a doubling of nitrogen...

Resource Type:

Dissertation
Vitamin B₁₂ production and depletion in a naturally eutrophic lake

Creator:

Gillespie, P. A.

Abstract:

The vitamin B₁₂ concentrations in both the water and sediments of Klamath Lake were found to vary significantly during a one-year period. The patterns of B₁₂ distribution were remarkably similar among the three main sites. In all cases there was an extremely sharp gradation in concentration in relation to depth...

Resource Type:

Dissertation

Full Text:

) Title: VITAMIN Biz PRODUCTION AND DEPLETION IN A NATURALLY EITTROPT-ITC 14K17 Abstract approved