Cunha-e-Sá, Maria AntonietaGuerra, Guilherme Reis de Lidon Brandão2025-08-272025-08-272025-01-062024-12-17http://hdl.handle.net/10362/186951This study evaluates the integration of marine natural capital into Portugal's Ocean Satellite Account (OSA) using the System of Environmental-Economic Accounting Ecosystem Accounting (SEEA EA) framework. Focusing on the Southwest Alentejo and Vicentina Coast, it analyzes ecosystem services such as carbon sequestration, commercial fishing, and recreational activities. This illustrative exercise highlights the economic value of these services and the challenges in data availability and valuation methodologies. By addressing these gaps, the study underscores the potential of ecosystem accounting to inform sustainable ocean management.engSEEA EAOcean economyEcosystem servicesEnvironmental valuationPortugalOcean accountingmaster thesis203992130