This article reports the results of a research about the sustai-nability of extractive farmers in the Atlantic slopes of Rio Grande do Sul. The extractive economy at issue is related to a species usually known as leather fern (Rumohra adiantiformis (G.Forest.) Ching). It is estimated that 3,000...

Food systems are under increasing pressure. They must meet the food requirements of a growing world population, and socio-economic changes also influence the type of foods which are under demand. At the same time, food systems are a major contributor to global environmental change, and...

This study investigated the state of the art of traditional, or landrace seeds in the State of Rio Grande do Sul. An ethnographic study was carried out by means of a non-statistical seed sampling in 13 farms from eight municipalities lying in the regions of the Greater Porto Alegre, Serra,...