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(searched for: doi:10.31258/dli.7.2.p.70-80)
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Henri, R Syafa’Ati, Randiansyah
Published: 1 November 2022
Abstract:
Mangrove ecosystem has a strategic function as a buffer for coastal areas, marine conservation, mitigates climate change and global warming. Bangka Belitung is an archipelagic province with many coastal areas, including mangrove ecosystems. This study aims to determine the quality of the mangrove ecosystem by analyzing the structure, composition, and health index of mangroves in the mangrove forest ecosystem in Baskara Bakti Village, Central Bangka Regency. Data were collected through observations at several sampling points used to analyze species composition, vegetation community structure, and environmental physicochemical conditions using stratified random sampling with an observation plot size of 10 m x 10 m and canopy cover determination using the hemispherical photography method. The study results show that the composition of mangrove vegetation in the study area consisted of 5 true mangrove species and 6 associated mangrove species. Rhizophora apiculata is the species with the highest Important Value Index of 91.87%. The mangrove community showed a good health condition with an average value of 50.41%. Environmental parameters that directly influence the mangrove forest ecosystem include temperature, water pH, dissolved oxygen (DO), and salinity. Planting and enrichment of mangrove species need to conserve sustainable mangrove ecosystems.
R E P Tjahjono, Perdinan, K G Lestari, C S Putri, E I Putra, Yonvitner, S B Agus, Adriani, R F Adi, S Aprilia, et al.
Published: 1 January 2022
Abstract:
Mangrove plays important role in the coastal ecosystem worldwide, and Indonesia as an archipelagic country occupies about 27% of the global mangrove area. Unfortunately, about 48% of areas of Indonesia’s mangroves have been damaged. Human, biophysics and climate stressors are found to affect the mangrove damages. Using a case study of Pekalongan and Demak, i.e., the prioritized locations for mangrove rehabilitation in Indonesia, this study translated the contributing stressors into quantifiable indicators that can be used to measure the risks. The risk framework on climate change assessment and ecological sensitive evaluation was employed to define the measured indicators and parameters. The indicators were classified into distinctive groups of hazards, exposures, and vulnerability which were composed of sensitivity and capacity. The indicators are then defined with regards to the existence of mangroves as an individual (vegetation), habitat, and ecosystem, and a set of parameters constitute the indicators measured the stressors of socio-economics, biophysics, and climate were determined with regards to the data availability and requirements. The measured indicators can be helpful to identify what strategies or actions should be devised to address the most contributing indicators to the mangrove risks and may be replicated to other coastal areas in the tropical regions.
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