Lizard, ecosystem, San Timoteo, native habitat, restoration, sage scrub
Animal Sciences | Biology | Life Sciences
An ever-growing human population has contributed to recurrent reductions in fragments of native coastal sage scrub (CSS) habitat left in areas surrounding Redlands, CA. This continuous pressure has allowed for invasions by nonnative vegetation, which undermine and radically alter plant and animal community structures. In less severe cases, a form of ecological restoration, land rehabilitation, can revive a piece of land to its pre-disturbance state, and measurements of one such example of an indicator and can be surveyed via refugia. Using this sampling technique, this project compared native-vegetation-dominated and nonnative-vegetation-dominated habitats of San Timoteo Nature Sanctuary (STNS) as well as documented the baseline abundance and diversity of lizards prior to the commencement of a rehabilitation project at this site. After weathering for four weeks, galvanized corrugated iron panels were surveyed from January to April 2012. Twenty-one western side-blotched lizards (Uta stansburiana elegans) were found to utilize the panels during the dry, sunny days with temperatures between 10-30oC. Due to a low sample size, this study cannot conclude a difference in lizard utilization of native versus nonnative-vegetation-dominated habitat and suggests galvanized corrugated iron refugia may not be the most successful lizard survey method of CSS in STNS. The actual rehabilitation project will take place in subsequent years, and the ecosystem health indicator measurements of this subproject will contribute to a long-term monitoring program of the rehabilitation.
Department 1 Awarding Honors Status
Stiles, R. (2012). Use of Lizard Refugia to Indicate Ecosystem Health of Disturbed and Native Habitats in San Timoteo Nature Sanctuary (Undergraduate honors thesis, University of Redlands). Retrieved from https://inspire.redlands.edu/cas_honors/510
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