The 1992 Rio de Janeiro Convention on Biological diversity and the recent EU regulations promote the protection of biodiversity and demote the strong biodiversity decrease in Europe. To implement this aim, the availability of site-specific native seed and plant material is needed. In the case of grasslands, this requirement is not sufficiently met in Central Europe, where seed of herbaceous native ecotypes is seldom available in large amounts. Extensively managed semi-natural grassland (the most important type of High Nature Value Farmland - HNVF) can be regarded as a seed source useful to establish new HNV areas. Indeed, they are normally rich in species of native provenance and for this reason they can be harvested to obtain valuable propagation material. State of the art techniques to create forage meadows or to restore degraded areas using commercial seed mixtures are not comparable with the target of ecological restoration done with propagation material from semi-natural grassland. Therefore a large number of different harvesting methods and application techniques have been developed for exploitation and application of site-specific seed or plant material.
Haslgrübler, P., Krautzer, B., Graiss, W., 2011: SALVERE - Semi natural grassland as a source of biodiversity improvement - a Central Europe Project. CIOSTA CIGR V Conference, 29 June - 1 July 2011, Vienna, Austria, Book of Abstract, pp. 600-602.