XVI. Marciano is the owner of a parcel of land through which a river runs out into the sea. The land had been brought under the Torrens System, and is cultivated by Ulpiano and his family as farmworkers therein. Over the years, the river has brought silt and sediment from its sources up in the mountains and forests so that gradually the land owned by Marciano increased in area by three hectares. Ulpiano built three huts on this additional area, where he and his two married children live. On this same area, Ulpiano and his family planted peanuts, monggo beans and vegetables. Ulpiano also regularly paid taxes on the land, as shown by tax declarations, for over thirty years. When Marciano learned of the increase in the size of the land, he ordered Ulpiano to demolish the huts, and demanded that he be paid his share in the proceeds of the harvest. Marciano claims that under the Civil Code, the alluvium belongs to him as a registered riparian owner to whose land the accretion attaches, and that his right is enforceable against the whole world. Is Marciano correct? Explain. (3%) What rights, if any, does Ulpiano have against Marciano? Explain. (3%)