| dc.description.abstract | The mangrove litter which has been decomposed contributes organic matter as
source of nutrients, mangrove and natural 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 R. apiculata litter leaf and to know the nutrient
content of carbon (C), nitrogen (N) and phosphorus (P) in the R. apiculata litter
leaf which been released during the decomposition time. This research was done
at the waters of the Island Sembilan Districs Langkat District Pangkalan Susu,
North Sumatra Province during March until June 2016. This research used
purposive sampling method at three stations and the determination of the station is
done by seeing the availability of R. apiculata at the waters of the Island
Sembilan.The results showed that the decomposition rate of R. apiculata litter leaf
on day 75 are 8,53 in stasiun I, 8,58 in station II and 10,18 in III station. The
fastest decomposition rate is the station I with 10,18 and the slowest
decomposition rate is the station I with 8,53. The nutrient of carbon during
decomposition in 75 days are 17,41 % at station I, 15,84% at station II and 17,41
% at station III. Nutrient of nitrogen which beendecomposed on day 75 are 0,98 %
in station I, 1,18 % in station II and 1,18 % in station III. Nutrient of phosphorus
during decomposition in 75 days are 0,08 % in station I, 0,09 % in station II and
0,10 % in station III. | en_US |
