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The purpose of this paper is to investigate how technology-forcing regulations affect the product development process in the supply chain of heavyweight vehicles.

Through a case study, this paper seeks to understand how one of the leading companies in heavyweight vehicles manufacturing industry and its engine supplier in Brazil introduce eco-design practices into its engine development process.

Through case studies conducted in a heavyweight vehicle producer and its engine supplier, this study shows that, in addition to meeting the standards and legislation, the automaker uses ecodesign practices during the product development cycle such as a design that eliminates harmful and hazardous materials and a project that allows recycling, the reuse of parts and energy efficiency, thereby reducing the environmental impact. However, without the mandatory requirements imposed by federal legislation, products with lower environmental impacts would rarely be developed, as environmental performance is not demanded by customers, who are mainly cost driven. Technology-forcing regulations play an important role in enhancing the adoption of ecodesign practices, but market and competitive conditions also play an important role.

Several studies on the impacts of public policies and development for the automobile sector have been conducted, but there is a lack of studies in the area of commercial vehicles, especially in Brazil. Therefore, this research is justified by new demands of society, in addition to the necessity of complying with legal requirements and the adoption of good practices related to eco-design.

This study aims to answer the question of how to structure a circular ecosystem for extractive fishing in the Amazon region. It explores possibilities for implementing a circular ecosystem management model in an imperfect market with low technological availability, high informality and limited public assistance.

Qualitative approach was adopted for this paper, with a case study on extractive fishing in the state of Amazonas. Data was collected through 35 interviews and direct observation of the processes of collecting, storing and transporting fish on two routes: Tapauá-Manaus and Manacapuru-Manaus.

Through the data collected, it was possible to observe the importance of an orchestrating agent – such as an association or even a public authority – for the establishment and development of a circular ecosystem for extractive fishing in the region.

The paper makes theoretical contributions by presenting how a circular ecosystem management model could be implemented for an imperfect market in the Global South, as well as contributing to the literature on how the circular economy contributes to mitigate the threat to biodiversity posed by the linear economy.

It contributes to the management practice of structuring circular ecosystems.

The role of public authorities and the collective organization of fishermen as orchestrators connecting the network of actors that develop the extractive fishing ecosystem is fundamental, guaranteeing effective social participation in solving local problems.

The idea of circular ecosystems was applied to imperfect contexts, with high informality, weak institutions and bioeconomy, topics still little explored in the literature.