Loma Linda University TheScholarsRepository@LLU: Digital Archive of Research, Scholarship & Creative Works Loma Linda University Electronic Theses, Dissertations & Projects 6-1980 Relationship of Tecate Cypress Distribution to Soil Types David E. Stottlemyer Follow this and additional works at: https://scholarsrepository.llu.edu/etd Part of the Biology Commons, and the Soil Science Commons Recommended Citation Stottlemyer, David E., "Relationship of Tecate Cypress Distribution to Soil Types" (1980). Loma Linda University Electronic Theses, Dissertations & Projects. 926. https://scholarsrepository.llu.edu/etd/926 This Thesis is brought to you for free and open access by TheScholarsRepository@LLU: Digital Archive of Research, Scholarship & Creative Works. It has been accepted for inclusion in Loma Linda University Electronic Theses, Dissertations & Projects by an authorized administrator of TheScholarsRepository@LLU: Digital Archive of Research, Scholarship & Creative Works. For more information, please contact
[email protected]. Abstract RELATIONSHIP OF TECATE CYPRESS DISTRIBUTION TO SOIL TYPES by David E. Stottlemyer The Tecate Cypress (Cupressus forbesii Jeps.) is a gymnosperm tree of limited distribution. To determine if soil is an influencing factor in its distribution, the soil characteristics of a Tecate Cypress grove in the Santa Ana Mountains of Orange County, California, were compared with soils from neighboring communities and other Tecate Cypress groves. • Soil samples were analyzed for texture, saturation percent, pH, and electrical conductivity. Tests were also run for nutrients such as nitrogen, phosphorus, potassium, calcium, magnesium, iron, manganese, copper and zinc. Results seem to indicate that the Tecate Cypress soils are: 1) significantly more acidic than the soils of surrounding chaparral communities, and 2) significantly lower in nutrients than the soils of big-cone Douglas fir, mixed conifer, knob cone pine and oak woodlands.