However, at this stage (and expected 2014 version], ECA is far from covering all ecosystem services. Also, initially, information on food crops and timber, will only be provided as stocks and no market values will be provided -a further limitation to linking clearly the ECA to the SNA. This does of course assume time series providing a longer term perspective as regards issues such as carbon content in soils, changes in land use types etc. It is however foreseen that the 2012 ECA will already have 2000-2010 time series data and in the long run the data should be updated on a 2-3 year basis.