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Mangrove Health Index as Part of Sustainable Management in Mangrove Ecosystem at Karimunjawa National Marine Park Indonesia

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Background: Monitoring the health of marine ecosystems is an integral part of sustainable management of the ecosystems including mangrove. Distribution and diversity of mangrove ecosystems are two important parameters in Mangrove Health Index (MHI). The index analyses value of mangrove density, diversity, index of similarity and the number of mangrove species. Method: This study investigates mangrove distribution and diversity. Mangrove distribution maps were prepared using Satellite imagery GEO-EYE. Ecological surveys to analyze the diversity of mangrove at five locations, namely Legon Cilik, Legon Gede, Kemujan, Karimunjawa and Menjangan Besar. MHI was calculated by assigning weight for each parameter, multiplied by each parameter score and then summing all of multiplication results value. Results: Satellite image interpretation results showed that mangroves were found at island of Karimunjawa, Menjangan Besar and Sintok. In total, 22 mangrove species identified, 12 species were true mangroves and the rests were mangrove associates. Rhizophora apiculata dominates three of nine survey locations, while Rhizophora stylosa was the dominant species in two of nine locations and the rest are dominated by Ceriops tagal, Lumnitzera racemosa, Rhizophora mucronata and Sonneratia alba. Density of mangrove in the category of tree, mangrove average density ranging from medium to high, from 230 to 1060 ind/ha. In the category of sapling, dominant mangrove species was relatively diverse. In general, the Shannon diversity index was low, it means that mangrove diversity is low, it means that mangrove diversity is low. Mangrove in Legon Cilik 1 and Menjangan Besar had the highest Shannon diversity index (1,09) while Karimun 1 were the lowest (0,18). Conclusion: The value of MHI at Karimunjawa was 200, which is in the medium category. The results suggest that there is a need to improve MHI as part of sustainable management based on the distribution and diversity of mangrove.
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Keywords: Distribution; Diversity; Karimunjawa Islands; Mangrove Health Index; Sustainable Management

Document Type: Research Article

Affiliations: 1: Environmental Engineering, The Universitas Pembangunan Nasional “Veteran” Yogyakarta, 55283, Indonesia 2: Faculty of Fisheries and Marine Sciences, Diponegoro University, Semarang 50275, Indonesia

Publication date: April 1, 2017

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