The Forest Focus monitoring activity continues from the network and plots established and implemented under previous schemes. From 1986 until the end of 2002 data were reported under the Council Regulation (EEC) No 3528/862. The Regulation was later modified by Regulation (EC) No 804/2002, which amended Council Regulation (EEC) No 3528/863. In 1991 a common monitoring system was agreed upon between the EU scheme and the International Cooperative Programme on Assessment and Monitoring of Air Pollution Effects on Forests (ICP Forests) under the Convention of the Long-Range Trans-boundary Air Pollution (CLRTAP).
Monitoring on Level II plots started in 1994. National Focal Centres (NFCs) compile and submit the data sampled on an annual basis. Until the monitoring year 2002 Level II data was processed and stored by the Forest Intensive Monitoring Coordinating Institute (FIMCI) under contract of DG AGRI. Following paragraph 15 of Forest Focus DG JRC is in charge of processing the monitoring data and has implemented for this purpose a Forest Focus Monitoring Database System (FFMDb). The system was developed and realized under contract by a Consortium, coordinated by I-MAGE Consult with Nouvelles Solutions Informatiques s.a. (NSI) as consortium partner and the Bundesforschungsanstalt für Forst- und Holzwirtschaft (BFH) as sub-contractor.
Forest Focus stipulates that data from all Level I and Level II surveys be integrated in a single system. Accordingly, the new system also includes data collected under the previous schemes, which for Level II surveys are referred to as legacy data. This report details the situation of the Level II legacy data for 2001 with respect to the validation process applied to data collected under Forest Focus. The main aim of processing the data is to identify any consequences of the legacy data on the results of validating data from subsequent years.