Sedimentological Characteristics of Surficial Sediments in the Kuala Kemaman Mangroves, Terengganu, Malaysia.
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概要
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Surface sediments were collected to determine the distribution of sediments inside a mangrove area. Mean sediment size, skewness, sorting and percentages of silt and clay were parameters measured and analyzed from 137 surface sampling points. The sampling points were located along 7 transects from the front to the back and were divided into 4 zones: mud flat, front, middle and back mangroves according to distance from the front water interface zone and the height of each point. The mean sediment size, skewness and percentage of silt and clay of surface sediments between four zones were found to be significantly different statistically (P < O.05). Mud flat has the finest surface sediments and greatest amount of silt and clay. Contrary to normal trend, the sediments at the back mangrove is coarser than the front. This may be attributed to bioturbation by crabs causing the coarser sediments from the bottom to be brought up to the surface.
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