| dc.description.abstract | The mangrove litter which has been decomposed contributes organic
matter as food source for many species of fish and other organisms in the
mangrove ecosystem. The purpose of this research is to know the decomposition
rate of A. marina litter leaf and to know the nutrient content of carbon (C),
nitrogen (N) and phosphorus (P) in the A. marina litter leaf which been released
during the decomposition time. This research was done at Nine Island Pangkalan
Susu base Langkat sub-district of North Sumatera Province during March until
Mei 2016. This research used purposive sampling method at three stations and
the determination of the station is done by seeing the availability of A. marina at
the Nine Island. The results showed that the decomposition rate of A .marina litter
leaf on day 75 are 11,13 in stasiun I, 10,94 in station II and 10,50 in III station.
The fastest decomposition rate is the station I with 11,13 and the slowest
decomposition rate is the station III with 10,50. The nutrient of carbon during
decomposition in 75 days are 10,46% at station I, 10,75% at station II and
11,03% at station III. Nutrientof nitrogen which been decomposed on day 75 are
0,98% in station I, 1,18% in station II and 0,10% in station III. Nutrient of
phosphorus during decomposition in 75 days are 0,10% in station I, 0,11% in
station II and 0,10% in station III. | en_US |
