The Master of Environmental Science Program at Universitas Gadjah Mada (UGM) conducted a Field Study (Kuliah Kerja Lapang, KKL) on Coastal Resilience in Pemalang Regency from 14–17 July 2025. The study analyzed beach cleanliness using the Clean Coast Index (CCI) and Hazardous Item Index (HII) across three strategic locations: Widuri Beach in Pemalang District, Joko Tingkir Beach in Petarukan District, and the Mojo Mangrove Essential Ecosystem (KEE) in Ulujami District. This research responds to the critical issue of anthropogenic marine debris along Indonesia’s coasts, particularly in Pemalang Regency, which has significant tourism and maritime economic potential.
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The research employed Shoreline Survey Methodology and transect belt sampling to comprehensively identify the quantity, types, and abundance of coastal waste. The research team utilized scientific instruments such as GPS devices, cameras, analytical scales, and other sampling equipment to obtain precise quantitative and qualitative data. The study aimed to evaluate beach cleanliness, assess hazardous items, and identify the factors influencing coastal conditions. Initial data indicated that Widuri Beach had the highest macro-waste density (items >25 mm), with plastic items dominating (143 out of 174 items) due to intensive tourism activities. Joko Tingkir Beach was dominated by meso-waste (5–25 mm) originating from the Comal River, while the Mojo KEE conservation area faced dual pressures from both marine and land-based waste threatening the mangrove ecosystem.
The study revealed concerning conditions, with significant amounts of plastic debris and hazardous waste, including needles, cigarette butts, and broken glass. “This research provides a scientific basis for maintaining the cleanliness and safety of Pemalang’s coastal environment,” said Cindy Amelina, Coordinator of the CCI Study Group. These data are critical considering Indonesia contributes 0.48–1.29 million tons of plastic waste to the oceans annually. As a strategic coastal region, Pemalang requires science-based management to ensure sustainable tourism and conservation. Collaboration among UGM, Pemalang Regency Government, the Environmental Agency, and the Regional Disaster Management Agency (BPBD) aims to develop effective coastal management policies that enhance environmental quality and maritime tourism sustainability.
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This field study contributes directly to several Sustainable Development Goals (SDGs), including SDG 14 (Life Below Water) through pollution reduction and coastal ecosystem protection, SDG 12 (Responsible Consumption and Production) by raising awareness of waste management, and SDG 17 (Partnerships for the Goals) through multi-stakeholder collaboration among academics, government, and local communities. The findings are expected to support global targets for marine environmental protection and sustainable development at local, regional, and national levels.
Author: Coastal Resilience Studies Team