Economic valuation of the preservation status of a Natura 2000 site: the case of Divari Pilou lagoon-Gialova (Greece)
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Grammatikopoulou, Ioanna1, Forfatter
Dubgaard, Alex1, Vejleder
Bøye Olsen, Søren1, Vejleder
1Det Biovidenskabelige Fakultet, København, Danmark
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 Abstract: To examine the willingness to pay (WTP) for the implementation of a conservation management plan in the Natura 2000 site of Diravi Pilou lagoon-Gialova a contingent valuation was employed. The survey was addressed to both foreign and Greek visitors as well as local rural and urban residents. 336 responses were selected from the survey that was conducted during July, August and September of 2009. A binary choice model of two versions was first performed demonstrating that 71% and 67% of respondents accordingly are willing to monetarily contribute so as to ensure the preservation status of the case study area. Behavioural factors and education level of respondents are positively related to the probability of WTP. Rural respondents and respondents of middle age seem more willing to participate. Frequency of visitation appears also to determine the probability of WTP and thus users that visit the area regularly in the present are willing to contribute more as opposed to users that used to visit the area in the past. Given that it was not possible to observe the accurate level of the selected WTP amount since the monetary values were censored within the amount interval presented in the payment card, a Tobit for Grouped data model was employed assuming a lognormal distribution of the dependent variable. Zero responses were excluded from the analysis and the model displayed that environmental behaviour as was captured by the environmental index indicator and appreciation of non-use values affect positively respondents’ WTP value. Visitors demonstrate lower WTP values whereas respondents with higher income are willing to pay more. The mean and the median WTP were €33.17 and €22.32 respectively. Nevertheless removing zero responses of which almost 86% regarded as protest responses may lead to self-selection bias that would produce biased parameters of the model estimates. Hence a Grouped data with sample selection model was performed including this time both participants and protest respondents. The model revealed that the correlation parameter was negative and statistically significant implying that welfare measures would be biased downwards after removing protest responses. The mean and median welfare measures were €52.19 and €32.47 respectively evidently lower than the ones obtained without the selectivity bias correction. Thus, protest respondents would on average report higher WTP values than those willing to reveal their WTP amount. The estimate of sample median was used so as to assess the aggregate benefits derived from the implementation of preservation measures for a 5-year period. Total benefits present value ranges between €5.6 and €8.2 million which outweigh significantly the real estimated cost (€4.01 million) of those measures according to the Environmental Impact Statement conducted by the Development Company of Messinia prefecture.
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 Type: Speciale
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Sprog: English - eng
 Datoer: 2010
 Sider: 105 pages
 Publiceringsinfo: København, Danmark : Fødevareøkonomisk Institut
 Indholdsfortegnelse: -
 Note: The Master of Science Programme in Environmental and Natural Resource Economics, Environmental and Natural Resource Economics
 Type: Speciale
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