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Study of Physical Factors Affecting the Growth of Caulerpa lentillifera J. Agardh in the Ban Yong Star Mangrove Forest, Tha Kham Subdistrict, Palian District, Trang Province.

Organization(s):Wichienmatu
Country:Thailand
Student(s):Ms. Kamonpat Noothong Ms. Khommaphat Nuiset Ms. Wichayaporn Khanklaew
Grade Level:Secondary School (grades 9-12, ages 14-18)
GLOBE Member(s):Kwanjai Karnchanasrimek
Contributors:Ms. Suthira Thacheen Ms. Orapin Noonum
Report Type(s):Virtual Science Symposium Report
Protocols:pH, Salinity, Water Temperature, Water Transparency, Dissolved Oxygen
Presentation Poster: View Document
Language(s):English
Date Submitted:2026-01-30
This environmental research project, "A Study of Physical Factors Affecting the Growth of Grapes (Caulerpa racemosa) in the Mangrove Forest of Ban Yong Star, Tha Kham Subdistrict, Palian District, Trang Province," was successfully completed thanks to the assistance and cooperation of many parties. The researchers would like to thank Mr. Sakda Paisomboon, Director of Wichianmatu School, and Ms. Suthira Thachin and Ms. Orapin Noonum, the project advisors, for their guidance and assistance in conducting the research, as well as for revising and improving the research to ensure accuracy and completeness. We would also like to thank all those involved who cooperated in data collection and facilitated the research at Ban Suan Nanin, Khlong Suso, Tha Kham Subdistrict, Palian District, Trang Province, which was the location of this research. Finally, the researchers would like to thank all parties who helped to make this research a success and sincerely hope that this research will be beneficial to the study and development of knowledge about grapes (Caulerpa racemosa) in the future.
This study investigated the physical factors affecting the growth of Caulerpa lentillifera J. Agardh. in the mangrove forest of Ban Yong Star, Tha Kham Subdistrict, Palian District, Trang Province. The objective was to examine the effects of these factors on the growth of Caulerpa lentillifera J. Agardh. Water and soil quality data were collected and analyzed for their relationship to Caulerpa lentillifera J. Agardh growth. The results showed that the average water temperature in areas with Caulerpa lentillifera was 30°C, higher than the average of 26°C in areas without Caulerpa lentillifera. The pH of the water was the same in both areas, at 5.5, which is considered acidic. Dissolved oxygen (DO) levels averaged 6.75 mg/L in the area with Caulerpa lentillifera, significantly higher than the average of 5.75 mg/L in the area without Caulerpa lentillifera. The water transparency in the area where Caulerpa lentillifera was found averaged 66 centimeters, higher than the area without Caulerpa lentillifera (52.5 centimeters). The salinity in the area with Caulerpa lentillifera averaged 2.8 ppt, higher than the area without Caulerpa lentillifera (2.3 ppt). Regarding soil quality, the soil temperature in the area with Caulerpa lentillifera averaged 30°C, higher than the area without Caulerpa lentillifera (27°C). The soil pH in both areas was the same at 5.5. This study indicates that temperature, pH, dissolved oxygen, water transparency, and salinity are important factors affecting the growth of Caulerpa lentillifera J. Agardh.


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