The role of consumer purchase and post-purchase decision-making in sustainable seafood consumption. A Spanish case study using carbon footprinting

Sustainable consumption in the food sector is a desirable goal which is often difficult to achieve depending as it does on the interaction of a broad set of factors, such as market prices or consumer preferences. In the current study, a distinction has been made between pre-purchase consumer decision-making, on the one hand, and purchase and post-purchase consumer decision-making, on the other. Purchase and post-purchase decisions are those that affect their actions directly. These include vehicle selection to purchase the products, shelf-time in the household or the cooking method employed. The main goal of this study was to evaluate the environmental profile in terms of carbon footprint (CF), of a range of scenarios with varying direct environmental decisions performed by consumers. More specifically, the CF of an iconic frozen seafood product in Spain (one package of frozen fish sticks of Patagonian grenadier) was modeled for a total of 24 scenarios of fish sticks consumption. Results showed a high variance in environmental impacts depending on the scenario chosen, proving the high variability in CF that the consumption of frozen seafood can show depending on consumer choices or needs. Additionally, results showed the relative importance of the consumption stage within the entire supply chain in terms of GHG emissions. Hence, important reductions may be achieved in the diet of an individual merely by improving the behavioral traits when purchasing and consuming food products. Consequently, consumers, if given the correct environmental guidelines through awareness campaigns, can play an active and relevant role in the reduction of the environmental profile of seafood products through behavioral modifications when purchasing and consuming them.