Valuing high-seas ecosystem conservation.

The high seas provide a variety of ecosystem services that benefit society. There have, however, been few attempts to quantify the human welfare impacts of changes to the delivery of these benefits. We assessed the values of several key ecosystem service benefits derived from protecting ecosystems in the high seas of the Flemish Cap through choice experiments conducted in Canada, Norway, and Scotland. Rather than solely eliciting public willingness to pay, we also explored the determinants of variance in the estimates of willingness to pay. We aimed to determine how much respondents were willing to pay for high-seas ecosystems conservation, which factors influence individuals' willingness to pay, and whether individuals in Canada had a higher willingness to pay relative to those living in Norway and Scotland. This latter point captures distance-decay effects. On average, the public placed positive value on conserving high-seas ecosystems and on developing economic activities related to the exploitation and exploration of marine resources, despite a lack of awareness and familiarity with these environments. Distance-decay effects on willingness to pay were not clear. Scots had the highest willingness to pay and the Norwegians the lowest willingness to pay for all attributes, with the only exception being willingness to pay for a large increase in new jobs, in which case Canadians' willingness to pay was higher than Scots'. The public's willingness to pay was influenced by sociodemographic characteristics and their perceptions of high-seas ecosystems. Our results provide evidence of the impacts of high-seas governance on human welfare and that improved governance could increase the value people place on high-seas ecosystems and the services they produce.

La alta mar proporciona una variedad de servicios ambientales que benefician a la sociedad. Sin embargo, ha habido pocos intentos por cuantificar los impactos al bienestar humano ocasionados por los cambios en la entrega de estos beneficios. Analizamos los valores de varios beneficios importantes de los servicios ambientales derivados de la protección al ecosistema en la alta mar del Cabo Flamenco por medio de experimentos de elección realizados en Canadá, Noruega y Escocia. En lugar de sólo suscitar la voluntad pública para pagar, también exploramos las determinantes de la varianza en las estimaciones de la voluntad para pagar. Nuestro objetivo fue determinar cuánto están dispuestos a pagar los respondientes por la conservación de los ecosistemas de alta mar, cuáles factores influyen sobre la voluntad para pagar de cada individuo y si los individuos en Canadá tenían una mayor voluntad para pagar que aquellos individuos que viven en Noruega y en Escocia. Este último punto captura los efectos de la descomposición por distancia. En promedio, el público le colocó un valor positivo a la conservación de los ecosistemas de alta mar y al desarrollo de actividades económicas relacionadas con la explotación y la exploración de los recursos marinos, a pesar de la falta de conocimiento y familiaridad con estos ambientes. Los efectos de la descomposición por distancia sobre la voluntad para pagar no estuvieron claros. Los escoceses tuvieron la mayor voluntad para pagar y los noruegos la menor voluntad para pagar por todos los atributos, siendo la única excepción la voluntad para pagar por un incremento de trabajos nuevos, en cuyo caso, la voluntad de los canadienses fue más alta que la de los escoceses. La voluntad del público para pagar estuvo influenciada por las características sociodemográficas y su percepción de los ecosistemas de alta mar. Nuestros resultados proporcionan una evidencia de los impactos que tiene la gestión de alta mar sobre el bienestar humano y que la gestión mejorada podría incrementar el valor que las personas le ponen a los ecosistemas de alta mar y a los servicios que producen.

Have environmental preferences and willingness to pay remained stable before and during the global Covid-19 shock?

This study tests the stability of environmental preferences and willingness to pay (WTP) values using a discrete choice experiment (DCE) across three countries pre and post the peak of the first wave of the Covid-19 pandemic. A DCE examining the public's preferences for alternative environmental management plans on the high seas, in the area of the Flemish Cap, was carried out in Canada, Scotland and Norway in late 2019 and was rerun in early May 2020 shortly after the Covid-19 pandemic had officially peaked in the three countries. The same choice set sequence is tested across the two periods, using different but nationally representative samples in each case. Entropy balancing, a multivariate reweighting method, is used to achieve covariate balance between the pre and post Covid samples in the analysis. The results suggest that both preferences and WTP remain relatively stable in the face of a major public health crisis and economic upheaval.

Stakeholder perceptions towards sustainable shrimp aquaculture in Vietnam.

Aquaculture is the fastest growing food production industry globally and is considered to have the greatest potential to meet the growing demand for seafood and being a solution to overfishing. Despite the benefits of aquaculture, the rapid growth and intensification of production (so-called conventional aquaculture) has raised concerns about food safety, fish welfare, and environmental and social issues stemming from a tragedy of the commons. These concerns need to be addressed to enable sustainable aquaculture development. While the negative environmental impacts of aquaculture have been evaluated using physical and chemical indicators, the social acceptance has not been fully considered when evaluating aquaculture sustainability. With this backdrop, our study investigates knowledge and beliefs towards shrimp aquaculture development among two key stakeholder groups in Vietnam: the public and producers (shrimp farmers). Our results show that stakeholders were concerned about the social and environmental impacts of conventional shrimp aquaculture, although the different stakeholder groups emphasized different aspects. The public believed biodiversity loss and the overuse of antibiotics and pesticides to be more problematic compared to producers, who believed water quality and disease outbreaks were the main problems facing the industry. Following on from this, most respondents perceived sustainable aquaculture production positively, implying social acceptability for its development. Awareness of and knowledge about sustainable aquaculture positively and significantly affected stakeholders' support for expansion, suggesting that communication and education may be effective tools for improving social acceptance of aquaculture.

Exploring fishers' pro-environmental behavioral intention and support for policies to combat marine litter in Vietnam.

This study applies Value-Belief-Norm (VBN) theory to investigate fishers' pro-environmental behavioral intention and their support for policies to reduce marine litter. While pro-environmental behavioral intention is often associated with personal environmental intention at the household level, policy support represents their support for government action at the political level. Therefore, we examine whether fishers are willing to engage in both of these dimensions. Data from 369 Vietnamese fishers are analyzed using structural equation modeling with FIMIX-PLS and PLS-POS. The results show that the sequence of values, beliefs, and personal norms can explain the fishers' pro-environmental behavioral intention and their support for policies addressing marine litter. Two segments of the fishers are detected from the sample with different perspectives of engagement intention. Fishers in segment 1 placed great emphasis on the consequences of marine litter on fishing activities as a motivator for their responsible actions. Meanwhile, fishers in segment 2 express pro-environmental engagement intention driven by the concern about responsibility and moral obligation. A binary logistic regression indicates that the risks of marine litter on fishing activity can provide the explanations for the differences between them. Our findings highlight both fishers' pro-environmental behavior and policy support as important strategies for dealing with marine litter in fisheries. If implemented simultaneously, they hold promise to alleviate the environmental and economic impact of marine litter in Vietnam.