NATURAL REGENERATION OF MANGROVE SEEDLINGS IN BENOA BAY, BALI
Abstract
Mangrove ecosystems have an important role in coastal areas either directly or indirectly. The preservation of the mangrove ecosystem can be described from the seedlings' abundance. Mangrove natural regeneration status was carried out in the Benoa Bay, Bali. The study was aimed to analyze the current natural mangrove regeneration based on the seedling abundance and its correlation with ecological characters. The study area was divided into three zones consist of 30 sampling quadratic plots in total. Seedling and mature stands community structure and environmental parameters data were collected from each plot. Based on the result, the mangrove regeneration state was categorized as fairly good condition. It was implied by seedling abundance compared with tree and sapling density. The highest seedling density was found in zone 2 which was dominated by Rhizophora mucronata with an average of 4800 ± 5610 stands/ha. It was significantly different from the other two zones. Variations of the community structure in the three zones had no significant influence on seedlings distribution. Only two environmental factors i.e. pH and redox potential, had a positive correlation and significant correlation with the abundance of mangrove seedlings. The result indicated that the mangrove regeneration state in this area was maintained even though it had faced variable threats.
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