Island systems have limited geographical, ecological, and social capacity to metabolize waste materials produced by the economic activities of their growing populations. Conceptualized as a 'wicked problem', the faults and weaknesses in waste management systems on islands continue to cause acute and cumulative ecological and human health impacts. Trinidad and Tobago is one such island jurisdiction grappling with this situation, particularly being a petroleum-dependent economy. Through the lens of neo-institutional theory, this case study of waste management in Trinidad and Tobago unpacks the efforts, reactions, drivers and circumstances that have led to various successes and failures but no definitive solutions over time, especially regarding plastics and packaging materials. We identify three temporal phases of policy evolution that have altered the waste metabolism trajectory to date: (1) government led patriarchal approach of traditional landfilling combined with behavioral change campaigns to reduce, reuse, and recycle, (2) to a more democratic, shared burden, public-private partnership approach combined with attempts at incentive-based regulations, (3) to the present, more private sector-led voluntary bans on production and use of plastics. This study contributes to our understanding of the institutional factors that shape the search for solutions to the wicked problem of island waste metabolism.
The building sector is responsible for 43% of France’s final energy consumption and is strongly associated with a high environmental impact due to its high consumption of energy and natural resources. These impacts are significant in isolated islands. Due to its geographical isolation and an area of 2512 km2, Reunion Island has a heavily carbon-based economy with a high import rate of raw materials for the building sector. This study aimed to investigate the effect of electricity mix decarbonization on residential house environmental impact. The methodology consists of three parts: (i) evaluating environmental impacts of Single-Family Houses (SFH) using life cyce assessment(LCA), (ii) defining SFH typologies using the K-means clustering algorithm, and (iii) implementing energy scenario in LCA of SFH to assess decarbonization effect. The environmental results were particularly sensitive in the operational phase, with a decrease of 83% between 2020 to 2040 of the global warming potential (GWP). The structural phase highlights the weight of imports in the building sector, as a decrease of only 1% is observed. This study clearly shows the necessary energy transition for Reunion Island. In the structural phase, the study recommends that stakeholders reduce imports and increase the share of recovered materials to achieve a substantial reduction in impacts.
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