Valuing multi-attribute marine water quality

Valuing multi-attribute marine water quality

Primary Country: Sweden
Ecosystems: open water / shores (rocky & beaches)
Sample Value Estimates:
  1. SEK639 : Mean marginal willingness to pay for an improvement from worst to best estimated to be SEK639 (95% confidence interval: 382-9
  2. .
  3. $101 / person: Mean marginal WTP of residents (single year payme
  4. of Sweden's West coast for marine water quality improvements for improved bathing water
  5. $211 / person: for cod stock
  6. $106 / person: for high biodiversity
  7. $2140 / person : for avoiding lower diversity
  8. $79.3 million: aggregate value of improving the cod stock to the 1970s level.
  9. SEK1330: Mean marginal willingness to pay for improving the the cod level from the current level (lowe
  10. to the highest level estimated to be SEK1330 (95% confidence interval: 997-17
  11. .
  12. SEK667 : Mean marginal willingness to pay for an improvement to high biodiversity estimated with 95% confidence interval: 388-9
  13. SEK(-)1348: to avoid lower biodiversity 95% confidence interval: (-)1691-(-)10
  14. .

Publication information

Eggert, H. Olsson, B “Valuing multi-attribute marine water quality” Marine Policy, 33: 201-206, 2009

Addtional Notes

Keyword: Water quality

Coastal waters of Swedish west coast, Skagerrak and Kattegat.

Choice experiment involving a sample of permanent residents of SW Sweden aged 18-65 years (324 in final analysis). 

Questionnare identified three levels for bathing water quality (associated with frequency that sites fail to meet quality standards), three levels for biodiversity, and three levels for cod stock. 

Payment mechanism involved a temporary (one year) fee. 

The analysis employs a mixed logit model.

 

Assuming non-respondents have a zero WTP, 

40% of the sample area population would pay

56.288969

11.277247

Economic Valuation Study

Tourism and Recreational Value

Mangroves, Wetlands or Coastal

A 2008 study in Sweden’s west coast used a choice experiment to elicit individual’s valuation of marine water quality improvements. They found that the mean marginal WTP (single year payment) was: improved bathing water $101

cod stock $211

high biodiversity $106

and avoiding lower biodiversity $2140. Assuming non-respondents have a zero WTP, 

40% of the sample area population would pay, leading to an aggregate estimate of $79.3 million for improving the cod stock to the 1970s level.

N/A

Information provided when available, for more information please visit the original database or PDF.