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Depth Profiles And Soil Textures Of The Vernal Pools Of The Santa Rosa Plateau Preserve, Riverside County, California, Ralph Charles Workman Jr.
Depth Profiles And Soil Textures Of The Vernal Pools Of The Santa Rosa Plateau Preserve, Riverside County, California, Ralph Charles Workman Jr.
Loma Linda University Electronic Theses, Dissertations & Projects
The purpose of this project was to study the edaphic and topographic characteristics of the 13 vernal pools on the Santa Rosa Plateau Preserve, thus documenting the role soil texture plays in vernal pool formation.
Several field and laboratory procedures were used to demonstrate that there is a higher percentage of clay present within vernal pools than in soils outside the margin of the pools, for 11 out of the 13 pools. Statistical tests showed that the percentage of clay was highly significant within the center soil of the pool as compared to the soil outside the margin of the …
Morphological And Biochemical-Based Phylogenetic Analyses Of Opuntiae Prickly Pear Cacti Of Southern California, Lyla S. Richards
Morphological And Biochemical-Based Phylogenetic Analyses Of Opuntiae Prickly Pear Cacti Of Southern California, Lyla S. Richards
Loma Linda University Electronic Theses, Dissertations & Projects
Phylogenetic analyses are used to suggest phylogenetic relationships for series Opuntiae (genus Opuntia, subgenus Opuntia) present in Southern California. The bases of the analyses were electrophoretic characters utilizing allelic band data obtained from electrophoretic assays conducted in this study and morphological and chromatographical characters compiled from data in existing literature. Cladograms produced from the different data bases yielded similar relationships. The electrophoretic-based cladogram provided the strongest support for Benson's (1982) classification with the o. littoralis complex represented as a monophyletic group, unlike the morphological and chromatographic-based cladograms. Placements of hybrids "Occidentalis C" and "Occidentalis D" were also considered.
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