Influence of mangrove ecosystem quality degradation on long-tailed monkey population in Muara Angke wildlife sanctuary Jakarta

Abstract

Background: One of the problems that occurs in the Muara Angke Wildlife Reserve (SMMA) is the generation of rubbish. This research aims to explain the decline in mangrove quality that occurred in SMMA and its effect on the long-tailed monkey population. Methods:  This research methodologically combines qualitative and quantitative methods, namely interviews, observation and air testing in the laboratory. Results: The results of this research found that organic pollution in the Angke River exceeded quality standards by two times, which probably also came from high levels of ammonia and detergent contamination. Apart from that, from observations, organizational and business activities cause waste in the Angke River. The decline in the quality of the mangrove ecosystem has an impact on the long-tailed monkey population. Initially there were three populations, but now there are only two populations totaling 65-66 individuals. Conclusion: This assumes that there is a possibility that long-tailed monkeys migrate to other places. Therefore, there is an influence between the decline in the quality of the mangrove ecosystem on long-tailed monkeys.