Carbon Dioxide Uptake in California Native vs. Non-Native Plants

Overview

Objectives/Goals This project was designed to observe the differences in carbon dioxide consumption between varieties of California native drought-resistant (Salvia species, commonly known as sage) and the non-native landscaping plant Ligustrum recurvifolium. The two secondary objectives were a) measuring oxygen production rates and b) investigating leaf anatomy images in these plants. Methods/Materials Carbon dioxide and oxygen sensors were used to measure uptake and production levels. In addition, a plastic chamber, digital data logging system, Salvia mellifera plant, Salvia leucophylla plant, Ligustrum recurvifolium plant, spinach clippings, and a glass thermometer were used. Results The carbon dioxide data collected were compared to microscopic images of each plant's leaf structures and stomata, as well as data on the rates of oxygen generation in each species. The observed differences between Salvia mellifera and Salvia leucophylla were statistically significant. The Salvia mellifera was more efficient at removing carbon dioxide levels than Salvia leucophylla, although they were both more efficient than the Ligustrum. Anatomical differences in stomata and drought-resistant features were observed. Conclusions/Discussion Although the carbon dioxide uptake data were statistically very similar, the approximately 16-fold difference in water use makes the drought-resistant California natives a good option for water conservation without reducing carbon dioxide uptake.

Awards (1)

• Honorable Mention

Competition history

• CSEF 2018 Plant Biology · Entry S1901

Resources

• CSEF project summary ↗

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