The monetary ecosystem services and asset account are particularly relevant for policy makers, that can often (though not always!) relate easier to monetary rather
than physical indicators. The ecosystem accounts inform on the value of ecosystem services provided in a given area, per year, or the net present value of this stream of
ecosystem services. This can allow, for example, comparing impacts of development options on ecosystem
services, or the monetary benefits of conserving ecosystems. It needs to be considered, though (!), that ecosystem accounts do not present the welfare value of ecosystems,
just as GDP doesn’t say very much about welfare. For example, water is priced at the price charged by the drinking water company, not what we are willing to pay for water
in case we are thirsty and water supplies run dry. Hence, the monetary values in the ecosystem accounts provide baseline data for valuation, but this information
needs to be supplemented with additional data, in particular values related to the consumer surplus derived from transactions/the use of goods and services in order to
better understand the welfare value of ecosystem management options. This is why it remains important to consider both the physical and, where available, the monetary numbers
in the ecosystem accounts to support decision making.