Abstract:
Study on grain size characteristics and distribution were carried out around lagoon area in
Tok Bali Lagoon, in order to gain more information about the dominant grain sizes
characteristics of lagoon sediment. Sediment characteristics are one of the most important
environmental factors directly affecting mangrove productivity and structure. Sampling
was carried out on July 30, 2005, where 30 samples were collected randomly around the
lagoon area. The sediment distribution was found to be moderately coarse, poorly sorted
and negatively skewed in most stations. There is not much variation in Kurtosis where
most of the sediment is extremely leptokurtic. The distribution of sediments might be
influenced by certain factors such as tidal current, vegetation which that occur in lagoon
area, morphology characteristic of lagoon area and human activities.
