Biogas produced from agricultural and forestry waste is emerging as a strategic and multifunctional solution to address climate change, inefficient waste management, and the need for renewable energy by transforming large volumes of biomass. Global estimates indicate that approximately 1.3 billion tons of waste is produced each year for these sectors; this waste is processed through anaerobic digestion, allowing it to be transformed into energy and biofertilizers. This reduces greenhouse gas emissions by up to 90%, promotes rural development, improves biodiversity, and prevents environmental risks, such as forest fires. However, despite its high global technical potential, which is estimated at 8000 TWh per year, its use remains limited as a result of its high initial costs, low efficiency in relation to lignocellulosic waste, and weak regulatory frameworks, especially in countries like Mexico, which use less than 5% of their available biomass. In response, emerging technologies, such as co-digestion with microalgae, integrated biorefineries, and artificial intelligence tools, are opening up new avenues for overcoming these barriers under a comprehensive approach that combines science, technology, and community participation. Therefore, biogas is positioned as a key pillar for a circular, fair, and resilient bioeconomy, promoting energy security and advancing toward a just and environmentally responsible future.

Traditional shellfish harvesting plays a crucial role in food security, local livelihoods and the preservation of cultural heritage in coastal communities. This study examined environmental, socioeconomic and circular economy perceptions associated with the artisanal fishery of the “black chinese” snail (Hexaplex nigritus) in the Navachiste Lagoon system, located in the south-eastern Gulf of California. A quantitative, exploratory–descriptive approach was employed using a structured Likert-scale questionnaire administered to 225 fishers. Four analytical dimensions were evaluated: environmental perception, personal-family-social, economic, and circular economy perception. Given the multidimensional nature of the questionnaire, the results were interpreted through item-level response patterns. An exploratory hierarchical cluster analysis using Ward’s method suggested greater similarity between environmental and economic perception profiles, without establishing a definitive relationship. The descriptive results indicated moderate environmental concern ($\overline{\mathrm{x}}$ = 3.12), high sociocultural value ($\overline{\mathrm{x}}$ = 4.49), a negative economic perception ($\overline{\mathrm{x}}$ = 2.32) associated with low income and dependence on intermediaries, and limited adoption of circular economy practices ($\overline{\mathrm{x}}$ = 1.36). It is concluded that, despite its cultural importance, surveyed fishers perceive that the fishery faces environmental pressures and economic constraints and shows an almost total lack of integration of circular economy practices. These findings underscore the potential importance of developing comprehensive policies to promote sustainable management, strengthen marketing, and foster a circular economy for the H. nigritus fishery with the aim of contributing to its long-term sustainability in the region.