John Lynham
Fifth time’s a charm!
By John Lynham PhD student Adrian Amaya and UHERO Research Fellow John Lynham recently started working on a new NSF-funded $1.6 million project entitled “Pathways and constraints to adaptation in coastal social-environmental systems”. The project is a collaborative research endeavor, both across institutions and academic disciplines: it brings together marine biologists, oceanographers, economists, anthropologists, and […]
Read MoreDetecting religion from space: Nyepi Day in Bali
Daily changes in human activity are difficult to detect using nightlight imagery because many factors that influence nightlights are changing from night to night. We propose using a difference-in-differences methodology for detecting daily changes in human behavior using NASA’s Black Marble product suite. We find that total top-of-atmosphere radiance on the Indonesian island of Bali decreases by […]
Read MoreImportance of equitable cost sharing in the Convention on Biological Diversity’s protected area agenda
Principles from social equity literature can be applied to a cost-sharing framework in the CBD’s new protected area strategy.
Read MoreImpact of two of the world’s largest protected areas on longline fishery catch rates
Two of the largest protected areas on earth are U.S. National Monuments in the Pacific Ocean. Numerous claims have been made about the impacts of these protected areas on the fishing industry, but there has been no ex post empirical evaluation of their effects. We use administrative data documenting individual fishing events to evaluate the economic impact of the expansion of […]
Read MoreCommunication, Expectations, and Trust: An Experiment with Three Media
We studied how communication media affect trust game play. Three popular media were considered: traditional face-to-face, Facebook groups, and anonymous online chat. We considered post-communication changes in players’ expectations and preferences, and further analyzed the contents of group communications to understand the channels through which communication appears to improve trust and trustworthiness. For senders, the social, […]
Read MoreRisk preferences after a typhoon: An artefactual field experiment with fishers in the Philippines
When are risk preferences stable and when do they change? In general, individual preferences tend to be consistent across time and space but extreme shocks, such as natural disasters, appear to change how people make economic decisions. We conduct an artefactual field experiment with fishers on a remote island in the Philippines and investigate the effect of […]
Read MoreCoastal armoring and sinking property values: the case of seawalls in California
Rising sea levels necessitate careful consideration of different forms of coastal protection but cost-benefit analysis is limited when important non-market social costs have not been measured. Seawalls protect individual properties but can potentially impose negative externalities on neighboring properties via accelerated beach loss. We conduct a hedonic valuation of seawalls in two coastal California counties: […]
Read MoreCan demand-side management replicate a size limit in a small-scale fishery?
We tested whether it is possible to replicate the effects of a size limit with a voluntary mechanism – a price premium for larger fish. We randomly offered fishers in Indonesia a bonus for catching certain species of fish above certain sizes. We observe clear differences in catch as a result. Instead of inducing fishers to […]
Read MoreOpportunities for agent-based modelling in human dimensions of fisheries
Models of human dimensions of fisheries are important to understanding and predicting how fishing industries respond to changes in marine ecosystems and management institutions. Advances in computation have made it possible to construct agent-based models (ABMs)—which explicitly describe the behaviour of individual people, firms or vessels in order to understand and predict their aggregate behaviours. ABMs are […]
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