A plausible and often simplified description of how the future may develop,
based on a coherent and internally consistent set of assumptions about key
driving forces (e.g., rate of technology change, prices) and relationships.
Scenarios are neither predictions nor projections and sometimes may be based
on a “narrative storyline.”
Scenarios may include projections but are often based on additional
information from other sources.
Millennium Ecosystem Assessment Glossary
For scenarios on the world ecosystems, see the toolbox: scenarios of the