Assessment of socioeconomic and ecosystem services of the blue economy in Tanzania using the UNECA's Blue Economy Valuation Toolkit

Asiya Maskaeva*, Pierre Failler, Honita Cowaloosur, Philippe Lallemand, Jerry Mang'ena

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


Even though Tanzania has been engaging in domestic and international sea-based economic activities for centuries, there are no specific statistical data on the contribution of the blue economy to the Tanzania's economy reinforcing the importance of this work. The purpose of this paper is to present economic, social, and ecosystem values that the blue economy resources generate in mainland Tanzania by using the United Nations Economic Commission for Africa (UNECA) Blue Economy Valuation Toolkit (BEVTK). In 2020 the major blue economy industries in Tanzanian contributed USD 7.2 billion to the gross value added (GVA) and employed over 2 million individuals. The value of ecosystem services was approximately USD 104.24 billion in the year 2020, with large permanent freshwater lakes contributing significantly (74.87%). The Composite Social Index Value of BE was estimated at 48.64, indicating that the blue economy contributes positively to the social development of mainland Tanzania. Among the negative outcomes of social indicators, the BEVTK generated a youth unemployment (12.2%) and a gender inequality index (53.0). The BEVTK presented here can be applied to another country context where decision-makers have similar interests in assessing the blue economy components and their contribution to the national economy.

Original languageEnglish
Article number105920
Number of pages11
JournalMarine Policy
Early online date21 Nov 2023
Publication statusPublished - 1 Jan 2024


  • Blue economy
  • Ecosystem
  • Evaluation
  • GVA
  • Measurement of blue economy
  • Tanzania

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