Greenhouse gas emissions from a Western Australian finfish supply chain

Greenhouse gas (GHG) emissions in the form of carbon dioxide equivalent (CO2 - eq) from two Western Australian finfish supply chains, from harvest to retail outlet, were measured using streamlined life cycle assessment methodology. The identification of interventions to potentially reduce the GHG emissions was determined from the results obtained. Electricity consumption contributed to the highest GHG emissions within the supply chains measured, followed by refrigeration gas leakage and disposal of unused fish portions. Potential cleaner production strategies (CPS) to reduce these impacts included installing solar panels, recycling the waste, good housekeeping in refrigeration equipment maintenance, and input substitution of refrigeration gas. The results show a combination of these strategies have the potential to reduce up to 35% of the total GHG emissions from fillet harvest, processing and retail

Using individual householder survey responses to predict household environmental outcomes: The cases of recycling and water conservation

Although individuals’ self-reports of behaviour are often used as a proxy for household environmental outcomes, little is known about how accurate they are or what factors might moderate accuracy. The current research investigated this question in relation to household recycling and water use. Results of Study 1 showed a significant, albeit weak, relationship between self-reported household recycling and objective measure of recycling that was not moderated by the number of people in the household. There was some evidence though that the relationship between self-reported and objective household recycling was stronger when respondents perceived more supportive community norms for recycling. The results of Study 2 supported Study 1 in showing a significant but weak relationship between self-reported water conservation behaviour and objective household water use that was again not moderated by the number of people in the house. Similar to Study 1, Study 2 showed that there was a stronger relationship between self-reported and objective behaviour when respondents had more favourable attitudes, more supportive subjective norms, and greater self-efficacy in relation to water conservation. Taken together the research suggests that psychological variables that orient householders to environmental behaviour are more important influences on aligning self-reported behaviour with objective outcomes than knowledge about the behaviour of others in the household