Agricultura familiar, extrativismo e sustentabilidade: o caso dos “samambaieiros” do litoral norte do Rio Grande do Sul
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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 families in the region perform this non-regulated activity, whi-ch is their only source of income. The sustainability degree of farmers was
calculated from information related to environmental, social and eco-nomic dimensions, and to productivity, stability, equity, resilience, and
autonomy criteria. The analysis focused on the comparison among the In-dexes Related to Dimension (IRD), Criteria (IRC) and Sustainability (IRS)
of each kind of production system. The results pointed to the existence of
four kinds of production systems, and three of them were included in this
research. The sustainability indexes showed that the production system
type 3 was the most sustainable, followed by type 2 and, fi nally, type 1.