Botanical investigations and proposal to a management plan of the cultural landscape at Naeroeya, Central Norway

bogs botanical composition composition botanique conduite des herbages conservation du paysage cultivos de pasto encuestas grassland management grazing herbage crops islands islas lande landscape conservation leys manejo de praderas marais meadows moors natural pastures noruega norway pastizal natural pastoreo plante pour herbage pradera temporal prados de siega prairie de fauche prairie naturelle prairie temporaire surveys tremedal