Abstract
As the pace of ecosystem restoration increases, more attention has been directed towards understanding public preferences for ecosystem restoration projects. This paper utilizes a choice experiments technique to evaluate the restoration project of an endangered species, Nymphoides peltata (known locally as asaza) in Lake Kasumigaura, Japan. The restoration project evaluated in this paper consists of two attributes: an extinction risk and a lakeshore ecosystem. First, we observe a positive willingness-to-pay for the vegetation restoration project: the mean willingness-to-pay for restoring the endangered specie and avoiding extinction was about JPY6,800 and the mean willingness-to-pay for restoring the covering area to the ideal condition that the species originally inhabited in 1996 was about JPY1,600. Second, we clarify what kinds of individual characteristics affect preferences for restoration projects compared with preferences for the status quo. The results show that respondents who have strong environmental attitudes, visit experience, high income, and are female are more likely to prefer restoration projects to the status quo. Third, we investigate whether knowledge and comprehension of ecological information have any influence on respondents’ value formations. We find that respondents’ comprehension of ecological information is positively related to their willingness-to-pay for the avoidable level of extinction risk attribute, while respondents’ knowledge of ecological terms has no effect. Overall, our findings suggest that the public strongly desires the avoidance of extinction of endangered species, and indicates that researchers should be careful about how ecological information is given.
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Notes
The species is listed as vulnerable in the Japanese Red Data Book (Environmental Agency of Japan 2000).
The cumulative distribution function is F(ε i ) = exp(–exp(–με i )), where μ is a positive scale parameter.
This implies constant error variance. See Train (2003) for details.
See Train (1986) for details.
In our application, K = 2, and C = {C Projects, C SQ } = {{1, 2}, {3}}. See Fig. 3.
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Mitani, Y., Shoji, Y. & Kuriyama, K. Estimating economic values of vegetation restoration with choice experiments: a case study of an endangered species in Lake Kasumigaura, Japan. Landscape Ecol Eng 4, 103–113 (2008). https://doi.org/10.1007/s11355-008-0049-0
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DOI: https://doi.org/10.1007/s11355-008-0049-0