sentences:  At present, there is a large push to eradicate marram grass as it is now classed as a pest species in New Zealand, and coastal managers encourage the planting of the two indigenous species, pingao ("Desmoschoenus spiralis") and spinifex ("Spinifex sericeus") as these two species create low angle, strong, stable dunes.The management of dune restoration projects includes planting vegetation successfully.Merely scattering and leaving seeds over sandy areas is perceived as a potential waste as strong winds can blow seeds away.