Ecosystem services classification: A systems ecology perspective of the cascade framework.

Area of Science:

• Ecology
• Environmental Science
• Conservation Biology

Background:

• Ecosystem services research is hindered by inconsistent terminology and classification systems.
• Ambiguity exists between ecological processes and the end-state benefits derived by humans.
• Current approaches often conflate ecosystem flows (services) with ecosystem assets (goods).

Purpose of the Study:

• To address ambiguity in ecosystem services typologies using the cascade framework and Systems Ecology.
• To propose a refreshed conceptualization of ecosystem services for improved assessment and measurement.
• To clarify terminology by distinguishing ecological processes from ecosystem goods.

Main Methods:

• Utilized the cascade framework to link ecological processes with human well-being.
• Applied Systems Ecology principles, focusing on biomass, information, and interaction.
• Combined Systems Ecology concepts with existing ecosystem services conceptualizations.

Main Results:

• Proposed defining ecosystem services as ecosystem interactions (processes) that alter human well-being.
• Identified ecosystem components (biomass units) as proxies for assessing changes in human well-being, not services themselves.
• Highlighted the utility of Systems Ecology for re-interpreting ecosystem services and emphasizing ecological complexity.

Conclusions:

• A clearer definition of ecosystem services is essential for consistent and comparable research.
• Distinguishing between ecological processes and ecosystem goods improves assessment accuracy.
• Systems Ecology offers a robust theoretical foundation for advancing ecosystem services research and application.