- CICES (Common International Classification of Ecosystem Services), 2018 2
All nutritional, non-nutritional, material and energetic outputs from living systems as well as abiotic outputs (including water).
- Hassan R, Scholes R, Ash N (eds) (2005) Millenium Ecosystem Assessment: Ecosystems and Human Wellbeing, Volume 1, Current State and Trends. Island Press, Washington
- Haines-Young, R. and M.B. Potschin, 2018, Common International Classification of Ecosystem Services (CICES) V5.1 and Guidance on the Application of the Revised Structure.