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Declining coral populations worldwide place a special premium on identifying risks and drivers that precipitate these declines. Understanding the relationship between disease outbreaks and their drivers can help to anticipate when the risk of a disease pandemic is high. Populations of the iconic branching Caribbean elkhorn coralAcropora palmatahave collapsed in recent decades, in part due to white pox disease (WPX). To assess the role that biotic and abiotic factors play in modulating coral disease, we present a predictive model for WPX inA. palmatausing 20 yr of disease surveys from the Florida Keys plus environmental information collected simultaneouslyin situand via satellite. We found that colony size was the most influential predictor for WPX occurrence, with larger colonies being at higher risk. Water quality parameters of dissolved oxygen saturation, total organic carbon, dissolved inorganic nitrogen, and salinity were implicated in WPX likelihood. Both low and high wind speeds were identified as important environmental drivers of WPX. While high temperature has been identified as an important cause of coral mortality in both bleaching and disease scenarios, our model indicates that the relative influence of HotSpot (positive summertime temperature anomaly) was low and actually inversely related to WPX risk. The predictive model developed here can contribute to enabling targeted strategic management actions and disease surveillance, enabling managers to treat the disease or mitigate disease drivers, thereby suppressing the disease and supporting the persistence of corals in an era of myriad threats. 

The circular economy (CE) has emerged with the promise of conserving resources through approaches such as durability and extended product lifetimes. At the same time, buildings negatively contribute to resource use and waste production, making buildings a key target for CE strategies. However, the question of how durability and lifetimes affect the social and environmental impacts of building products remains largely unexplored. In this study, we applied environmental and social life cycle assessments (E-LCA and S-LCA, respectively) to a common building component, roof covering, to investigate the effects of durability and different lifespans, and the tradeoffs between social and environmental impacts. We tested different lifespan scenarios for three materials with different durability: thermoplastic polyolefin (TPO), zinc-coated steel, and galvanized aluminum sheets. The results suggest that it is critical to consider the tradeoffs of social and environmental benefits: steel had the most promising social performance, followed closely by aluminum, while the least durable material (TPO) had the worst environmental and social performance. However, the environmental impacts resulting from the production of aluminum sheets were significantly lower than the impacts from steel, which made aluminum the preferred choice for this case study. Moreover, product lifespans impacted the results in both E-LCA and S-LCA due to the number of replacements needed over the life of a 100- year building. We discuss key limitations of integrating E-LCA and S-LCA approaches, such as data aggregation and spatial issues, lack of standards on how to account for product durability, and concerns surrounding S-LCA results interpretation. 

The concept of the circular economy has taken off, gaining momentum along with concerns about resource depletion, waste, and the impending ‘end of cheap nature’ (Moore 2014). Environmentalists and industrialists alike have promoted the benefits of reuse as a means toward improved efficiency and reduced resource pressure. Some have called for a new ‘culture of reuse’ (Botsman and Rogers 2010; Stokes et al. 2014). It is in this context that we explore repair, resale, and reuse as practices with deep historical precedent and contemporary continuity. Are there lessons to be learned from places that are already home to circular economies and strong cultures of reuse? And are there dangers inherent in a stronger, more formalized reuse sector? This paper draws on an historical and ethnographic analysis of vibrant reuse practices in the rural northeastern state of Maine. While there is a popular tendency to explain Maine’s persistent reuse practices as a response to economic and geographic marginality, our empirical observations suggest that these explanations do not adequately capture the complexity of reuse markets, discount the power of human agency and sense of place, and preclude important lessons for reuse policy in other contexts. Insights from Maine suggest that any effort to promote reuse would benefit from looking beyond purely economic rationales to attend to matters of place, sociality, and market relationality.