| Summary: | The data originates from national monitoring on the effects of the Finnish agri-environment support scheme (MYTVAS). In 2001, 2005, and 2010 a total of 52 one km2 quadrates situated in four geographical regions in Finland were sampled using stratified random sampling. Distance between the quadrates was one km, in most cases 10 km. In each 1 km2 quadrate, vascular plants were recorded in up to 12 separate 50 m long and 1 m wide transect lines (with total monitored area of 50 m2). The transect lines located in the centre of the habitat patch, at least 50 m distance from each other. The habitats were open and semi-open uncultivated patches. The data of same 580 transects has been studied in all the study years. The methods are described in the following five publications: Jauni, M. & Helenius, J., 2008. Putkilokasvien monimuotoisuus maatalousalueilla 2001-2006. In: Kuussaari, M., Heliölä, J., Tiainen, J., Helenius, J. (Eds.), Maatalouden ympäristötuen merkitys luonnon monimuotoisuudelle ja maisemalle. MYTVAS-loppuraportti 2000-2006 (Significance of the Finnish agri-environment support scheme for biodiversity and landscape: Final report 2000-2006, in Finnish). Suomen ympäristö 4/2008: 23-49. Pakkanen, H. & Helenius, J. 2004. Kasvien monimuotoisuuden seuranta - toimenpiteiden vaikutukset pientareilla ja suojakaistoilla. In: Kuussaari, M., Tiainen, J., Helenius, J., Hietala-Koivu, R. & Heliölä, J. (Eds.). Maatalouden ympäristötuen merkitys luonnon monimuotoisuudelle ja maisemalle. MYTVAS-seurantatutkimus 2000–2003 (Significance of the Finnish agri-environment support scheme for biodiversity and landscape: Results of the MYTVAS project 2000-2003, in Finnish). Suomen ympäristö 709: 30-43. Kuussaari, M., Heliölä, J. & Luoto, M. 2004. Farmland biodiversity indicators and monitoring in Finland. In: Groom, G. (Ed.). Developments in Strategic Landscape Monitoring for the Nordic Countries. Nordic Council of Ministers. ANP 705: 28-40.
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