Portland State University. Department of Biology
Robert O. Tinnin
Date of Award
Master of Science (M.S.) in Biology
1 online resource (98 p.)
The purposes of this study were to determine if Rhododendron macrophyllum has the potential to inhibit the growth of other species through the production of water-soluble toxins which are leached out of its litter by rainfall, and to determine if this potential is realized in the field. The study was therefore composed of two part: 1) a series of bioassays to determine the presence an activity of water-soluble phytotoxins in R. macrophyllum leaf litter, and 2) a field study to describe vegetational patterns associated with R. macrophyllum in a western Cascades clearcut.
Clark, Ivan W., "The allelopathic potential of Rhododendron macrophyllum in a western Cascades clearcut" (1979). Dissertations and Theses. Paper 2766.