For half a century, Father Reitz has worked for the preservation of the environment in Brazil. Mainly thanks to his efforts, 750 hectares of Botanical Park was established in 1961 in Santa Catarina.
He was instrumental in the creation of the ecological stations of Taimbes, Carijos and Babitonga, between 1976 and 1986. He initiated protection of endangered fauna covering 40 species of animals. Beginning with 51 animals, his project now helps more than 1,000 people.
An accomplished researcher, Reitz has discovered five new genera and 327 new species of plants in Brazil and he has written extensively on botany and ecology.