Problem category and policy options | Regional Guidelines for the valuation of ecosystem goods and services in the Pacific

Problem Category	Sub-Issues	Appropriate Policy Responses	How ecosystem valuation may help?
Pollution and Contaminants	Nutrient runoff Plastic waste Oil spills Sewage discharge	Pollution taxes (e.g. nitrogen levy) Extended Producer Responsibility (EPR) for plastics Ban/restriction on harmful substances (e.g. TBT) Subsidies for waste treatment tech Wastewater discharge permits Public awareness campaigns	Examples include: 1. Excessive nitrogen and phosphorus inputs have led to eutrophication. Valuation studies have estimated the economic benefits of reducing nutrient loads, aiding in cost-benefit analyses for pollution control measures. 2. The hypoxic zone affects fisheries and tourism. Assigning monetary values to lost ecosystem services has highlighted the economic imperative for nutrient management strategies to avoid any further tourism and fishery loss.
Overexploitation of Resources	Overfishing Bycatch Habitat-depleting fishing methods	Catch quotas and Total Allowable Catch (TAC) Individual Transferable Quotas (ITQs) Fishing gear restrictions Marine Protected Areas (MPAs) with no-take zones Eco-certification schemes	Examples include: 1. Valuation of fish stocks has been used to assess the economic losses from overfishing, supporting the implementation of sustainable fishing practices. 2. Economic assessments have demonstrated the value of reef-associated fisheries, justifying the establishment of marine protected areas to prevent overexploitation.
Physical Habitat Destruction	Coral damage Mangrove loss Dredging	Zoning and spatial planning (e.g., no-build zones) Environmental Impact Assessments (EIA) Habitat restoration subsidies Strict construction regulations for coastal development	Examples include: 1. Valuation of coastal protection services provided by mangroves has been instrumental in advocating for mangrove conservation and restoration efforts. 2. Economic valuation of carbon sequestration by seagrasses has highlighted their importance, promoting policies to protect these habitats.
Climate Change and Oceanographic Changes	Acidification Coral bleaching Sea-level rise	Climate adaptation planning Blue carbon credits and markets Coastal buffer zones Resilience subsidies for reef/mangrove restoration Global emissions reduction commitments	Examples include: 1. Valuing the carbon sequestration services of seagrasses has supported their inclusion in climate mitigation strategies and carbon credit markets. 2. Economic assessments of natural coastal defences have informed adaptation planning and investment in ecosystem-based solutions to sea-level rise.
Invasive Species and Biodiversity Loss	Ballast water Alien species Genetic pollution	Ballast water treatment regulations Import bans on invasive species Rapid response and eradication funds Biosecurity enforcement	Examples include: 1. Valuation of damages caused by invasive species has been used to prioritize management actions and allocate resources effectively. 2. Economic valuation of biodiversity has underscored the need for conservation measures to prevent species loss.
Shipping and Maritime Industry Impacts	Noise pollution Vessel strikes Light pollution	Speed limits in marine mammal zones Noise regulation zones Ship design standards Mandatory vessel routing to avoid sensitive areas Port fees or rebates based on environmental performance	Examples include: 1. Oil spill in the Gulf of Mexico has prompted valuation of lost ecosystem services, influencing compensation and restoration efforts. 2. Economic assessments of ecosystem services have been used to evaluate the trade-offs associated with increased shipping activities.
Aquaculture Impacts	Waste discharge Disease Habitat loss	Aquaculture siting permits based on ecosystem sensitivity Best management practice (BMP) guidelines Effluent discharge limits Antibiotic use restrictions Certification (e.g. ASC)	Examples include: 1. Valuation of ecosystem services has been applied to assess the environmental impacts of aquaculture, guiding sustainable practices. 2. Economic considerations have highlighted the need to balance aquaculture development with the preservation of coastal ecosystem services.
Governance and Institutional Failures	Weak MPA enforcement Fragmented policy Lack of data	Integrated coastal zone management (ICZM) Marine spatial planning (MSP) Inter-agency coordination frameworks Monitoring and /reporting systems Capacity-building and funding for local authorities	Examples include: 1. Valuation of marine ecosystem services has been used to identify governance gaps and inform institutional reforms for better resource management. 2. Economic assessments have supported the integration of ecosystem service values into national policies, enhancing institutional effectiveness.