This study examines how intergenerational communication within families mediates the relationship between socio-economic transformation in the agromaritime sector and sustainable consumption practices in households of coastal and agricultural communities in Indonesia. The research design is qualitative with a multi-site case study approach in three agromaritime communities. Data were collected through in-depth interviews and FGDs. The findings show: (1) open and reflective communication strengthens the internalization of sustainable consumption values (waste reduction, preference for local products, energy efficiency); (2) socio-economic transformation (business diversification, marketing digitization, maritime-based tourism) changes income structures and consumption preferences; (3) intergenerational value tensions and market status pressures become obstacles; and (4) households exhibiting collaborative communication patterns show greater consistency in "greener" consumption choices. Its theoretical contribution is the articulation of the transformation, intergenerational communication in family, and sustainable consumption model in the agromaritime domain; its practical contribution is the design of policy interventions that integrate family communication modules into agromaritime transformation programs. The findings are expected to be relevant for policymakers, environmental NGOs, and local communities in consolidating socio-economic-ecological sustainability.
Adeni et al. (2026) studied this question.