Most regulating services give us indirect use values (see Box 1), like flood control and carbon sequestration, which are discussed for freshwater and peatland in TemaNord 2012:506 and TemaNord 2015:544, respectively. However, for peatlands the carbon sequestration effect was assessed in terms of tons of C02.The non-use values (see Box 1) are values people place on having ecosystems and ecosystem services present, even though they do not use them themselves. Important non-use values are the legacy of biodiversity and "knowing" that the seas, or rivers, wetlands and forest are preserved for the future. Such values can be estimated by using so-called stated preference valuation methods, like the Contingent Valuation method.