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Study of Factors Affecting the Density and Size of Hammer Clam in Different Ages of Mangrove Forests
Organization(s):Princess Chulabhorn Science High School Trang
Country:Thailand
Student(s):Watwaree longkhao and Aphatsara Sutthikul
Grade Level:Secondary School (grades 9-12, ages 14-18)
GLOBE Educator(s):Patchara Pongmanawut
Contributors:Assoc. Prof. Dr. Mullica Jaroensutasinee and Assoc. Prof. Dr. Krisanadej Jaroensutasinee from Walailak University
Dr. Anantanit Chumsri from Rajamangala University of Technology Srivijaya Trang campus
Patchara Pongmanawut and Salamiyah Kittibunyathiwakon
Princess Chulabhorn Science High School Trang.
The Institute for the Promotion of Teaching Science and Technology (IPST)
Report Type(s):International Virtual Science Symposium Report
Protocols:Land Cover Classification, Soil Fertility, Soil pH, Soil Temperature
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Language(s):English
Date Submitted:03/10/2023
The study of factors affecting the density and size of Hammer clam in mangroves of different ages aimed to study salinity soil temperature and soil quality to compare the density and size of Hammer clam populations in two different aged mangrove forests, 30-year-old (mangrove forest site 1) and 10-year-old (mangrove forest site 2) in the two community; Ban Mod Tanoi and Koh Libong Sub-district, Kantang District, Trang Province. The data analysis of the soil quality began after the site visit to explore the Hammer clam. It was found that the density and size of Hammer clam were different between the two study sites. The 10-year-old mangrove forest (mangrove forest site 2) had a higher density of Hammer clam and a larger Hammer clam than 30-year-old mangrove forest (mangrove forest site 1). The soil quality in both areas was significantly different. The salinity, soil temperature, pH, soil nutrient content and organic matter content in the 10-year-old mangrove forest (mangrove forest site 2) were higher than the 30-year-old mangrove forest site 1 (mangrove forest site 1). Mangrove forests of different ages resulted in different sizes and heights of mangrove trees in both areas affecting the canopy cover as a result, the soil temperature in both areas was different as well. The 10-year-old mangrove forest (mangrove forest site 2) is an area where the temperature is appropriate and the sediment accumulation in the soil results in higher nutrient content. As a result, the population density of Hammer clam is higher and the mussels in that area are larger. The 10-year-old mangroves (mangrove forest site 2) are therefore more suitable for habitat and food source for the 30-year-old mangroves (mangrove forest site 1).