Traditional Mangrove Management in Langensari Village, Subang, West Java: A Study on the Practice of Integrating Mangroves into Polyculture Ponds

Abstract

This study aimed to explore the integration of mangroves into a polyculture system involving various fish species, including milkfish (Chanos chanos), tilapia (Oreochromis mossambicus), and tiger shrimp (Penaeus monodon) in Langensari, Subang, West Java and assess water quality and analyze heavy metal content in mangrove root sediments. Observations were conducted at two observation stations, namely: Station-1, in a residential pond (ST-1) and Station-2 in the estuary area (ST-2). Water quality and heavy metal content taken from root sediments were measured using AA-7000, Shimadzu® atomic absorption spectrophotometer (AAS). At Station-1 (ST-1), three dominant mangrove species were found, namely R. stylosa, A. marina, and B. gymnorhiza. While in ST-2, A. marina and S. caseolaris were found. Water quality parameters, Chemical Oxygen Demand (COD), Biochemical Oxygen Demand (BOD), pH, and heavy metals Cu, Cd, and Pb were conducted to assess the effectiveness of the roots' ability to precipitate pollutants. Water quality test results showed that A. marina roots were more effective at precipitating heavy metals than R. stylosa roots in both locations. A. marina showed higher levels of Cu, Cd, and Pb than R. stylosa.