Seedling recruitment in semi-natural pastures: the effects of disturbances, seed size, phenology and seed bank [Campanula rotundifolia, Cerastium, Erophila verna, Hieracium pilosella, Polygala vulgaris, Rumex acetosa]

achillea millefolium banco de semillas del suelo biodiversidad biodiversity campanula dominant species emergence emergencia especies dominantes fenologia field experimentation grosseur des semences natural pastures pastizal natural phenology plant population plantule prairie naturelle rumex seasonal variation seed size seedlings soil seed banks stock semencier du sol suecia sweden trifolium veronica viola