Definition:
“extent of wetlands”
This term can be defined as the surface area of wetlands. It is measured in km2 or hectares. It is expected that the surface reported by countries in 2018 correspond to that of 2017; if not, the reference year should be indicated.
“change in the extent of wetlands”
This term refers to the percentage change in area of wetlands from a baseline reference. For reporting such change, the previous extent, if known, and the period over which the change has taken place should be specified.
