This dissertation deals with the trajectories of the production systems of the family farmers
who work with agroforestry systems (AFS) in the municipality of Irituia, identifying the
internal and external conditions that lead them to introduce/modify the AFS. The question that
mobilizes the research is: How did the role of SAFs in family production logics evolve in the
municipality of Irituia, Paraense Northeast? The study was carried out in the municipality of
Irituia in the year of 2018. In order to understand the changes that occurred in the production
system, a multi-scale analysis of the agrarian context and the agricultural establishments was
done, based on the systemic focus. For this purpose, the historical interviews, documentary
analysis, landscape analysis, questionnaire application and retrospective analysis were used as
method and tools. The results are presented in two articles: I – the first identifies the historical
events and changes in factors external to the production system that conditioned their
transformations for the introduction/ modification of AFS. We found that AFS in Irituia were
consolidated mainly by endogenous incentives from local actions that stimulated their
expansion/ modification within the production system. Public policies that have occurred in
history, such as PROAMBIENTE, PAA and PNAE, social organization and the structuring of
municipal infrastructure have stimulated and valued the diversification of AFS and the
production system itself. II – the second article analyses the changes that have occurred in
production systems over time and the necessary adaptations for introduction/ modification of
AFS. We show that farmers tailor their systems according to opportunities, self-interests and
family at a given point in history. It can be noticed that the trajectories of the production
systems present a period when the farm goes into crisis and, for this and other reasons, the
AFS have been gaining space in the family farms and in the municipality. In general, the
trajectories oh the production systems comprise phases of transformation, diversification and
aggregation of value, both in the AFS and in the production system as a whole. There are sign
of forest recovery in the farms by the practice of AFS and conservation of regrowth forests
linked to beekeeping. We conclude that the expansion of AFS in Irituia and the diversification
of the production system were possible thanks to the structural development, the interests and
support of the local power, and the commitment of the farmers. The insertion of AFS in the
production systems has led to changes in the trajectory that go beyond the structure of the
production system, resulting in the creation of the cooperative, the change of farmers’
relationship with nature and the construction of a new identity.
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