Schedule of Events
Natural Sciences Oral Presentations
Friday, May 2, 2025
1:30 pm - 3:30 pm
ASCI 214
This session features outstanding student research from across the Natural Science Division. Selected by faculty for their exceptional work, these student presenters will share findings from months-long research projects spanning disciplines like biology, chemistry, physics, and environmental science. Each talk reflects both the depth of their scientific inquiry and their ability to present complex ideas clearly—skills they’ve demonstrated on campus and at professional conferences. This is a unique opportunity to hear from some of the division’s top student researchers and explore the cutting-edge work they’re doing.
Student Abstracts
A Comparative Study Between Microplastic Contamination in Channel Islands Harbor and Santa Clara Riverbed
Microplastic pollution is a significant environmental concern, particularly in coastal and agricultural regions where human activities contribute to contamination. This study compares microplastic and microfiber pollution between Channel Islands Harbor, a recreational and commercial hub, and the Santa Clara Riverbed, which runs through agricultural land before emptying into the Pacific Ocean. By analyzing sediment samples from both sites, we aim to identify the sources and distribution of microplastic contamination in these contrasting environments.
Sediment samples were collected at high tide marks from both locations and processed using vacuum filtration and Rose Bengal staining to distinguish synthetic microplastics from organic material. Samples were examined under a Nikon dissecting microscope for quantification, and Fourier Transform Infrared Spectroscopy (FTIR) was used for material identification.
Preliminary results indicate higher concentrations of microfibers in the harbor, likely due to boating activity, urban runoff, and marine infrastructure, whereas the riverbed samples contained more microplastics, likely originating from agricultural runoff, textiles, and irrigation systems. The findings highlight distinct pollution sources in coastal and inland environments, emphasizing the need for further research on pollution mitigation and regulatory measures.
Sediment samples were collected at high tide marks from both locations and processed using vacuum filtration and Rose Bengal staining to distinguish synthetic microplastics from organic material. Samples were examined under a Nikon dissecting microscope for quantification, and Fourier Transform Infrared Spectroscopy (FTIR) was used for material identification.
Preliminary results indicate higher concentrations of microfibers in the harbor, likely due to boating activity, urban runoff, and marine infrastructure, whereas the riverbed samples contained more microplastics, likely originating from agricultural runoff, textiles, and irrigation systems. The findings highlight distinct pollution sources in coastal and inland environments, emphasizing the need for further research on pollution mitigation and regulatory measures.
Student(s):
Kiana Adli
Faculty Mentor:
Dr. Robert Richards