Omitted downstream attributes and the benefits of nutrient reductions: Implications for choice experiments
Journal
Ecological Economics
Series/Report No.
Ecological Economics
Journal Volume
222
Start Page
108218
ISSN
0921-8009
Date Issued
2024-08
Author(s)
Wendong Zhang
DOI
10.1016/j.ecolecon.2024.108218
Abstract
Discrete choice experiments have been used extensively to value environmental quality; however, some important attributes are often omitted due to design challenges. In the case of quantifying the values of water quality improvement programs that bring transboundary impacts, existing studies predominantly focus solely on local benefits. Using a statewide survey of Iowa residents, we provide one of the first estimates of willingness-to-pay for both local and downstream water quality improvements-Gulf of Mexico hypoxic zone reduction-stemming from nutrient reductions. Using a split-sample design, we find that excluding hypoxic zone reduction as an attribute significantly reduces the total economic value of nutrient reduction programs. Moreover, we find evidence showing that such exclusion, in line with the theoretical prediction, only changes the preferences of respondents who are aware of the transboundary impacts of nutrient reductions. Conversely, our results also show that providing information about the downstream water quality benefits of nutrient reductions increases support for water quality improvement plans among local residents who are unaware of the connection between local and downstream water quality.
Subjects
Agricultural water pollution
Choice experiment
Gulf of Mexico Hypoxia
Harmful algal blooms
Non-market valuation
Publisher
Elsevier BV
Description
Article number: 108218
Type
journal article