Spatial distribution of marine debris in mangrove ecosystem of Pantai Indah Kapuk, Jakarta

Abstract

Hastuti AR, Yulianda F, Wardiatno Y. 2014. Spatial distribution of marine debris in mangrove ecosystem of Pantai Indah Kapuk, Jakarta. Bonorowo Wetlands 4: 94-107. Research of marine debris (macrodebris and microplastics) was conducted in mangrove ecosystem Pantai Indah Kapuk on March-June 2014. The aims of this research were to analyze the potentials and problems of marine debris and to determine appropriate management strategy. The macrodebris was collected using quadrat transect. Plastic items were the dominant type of macrodebris, recorded 77.7% of macrodebris items were plastic, followed by styrofoam (18.1%). Abundances of macrodebris were positively correlated with the density of Avicennia marina, although it was not significantly different by the distance from lower vegetation mark. Abundances of microplastic were assessed using sediment density separation. Mangrove sediment trapped microplastics up to a depth of least 30 cm without seeming to change. Film was the dominant type of microplastics collected (up to 74.1%), followed by fiber (up to 16.8%). Abundances of macroplastic were not correlated with abundances of microplastic. The management strategies that suggested were ecosystem rehabilitation using Rhizophora sp. at the lower vegetation mark and widen mangrove ecosystem.