On the use of contingent valuation method to assess factors affecting the contribution of local people for the management of water hyacinth in Lake Tana, northwestern Ethiopia

Sewunet, Birhanu; Gizeyatu, Adinew; Lingerew, Mistir; Girma, Haileyesus; Keleb, Awoke; Malede, Asmamaw; Adane, Metadel; Woretaw, Lebasie; Adane, Balew; Mulu, Berihun; Debela, Sisay Abebe; Daba, Chala; Gebrehiwot, Mesfin

doi:10.1007/s11356-022-21846-y

Cited by 7 publications

(6 citation statements)

References 22 publications

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“…The labor survey also showed higher WTCL when a household is located near the lake and has more family size. Similar findings were also reported for a status-quo scenario in the same study system (Sewunet et al, 2022). Our findings are in agreement with other CVM studies (Van Oijstaeijen et al, 2020;Girma et al, 2021).…”

Section: Discussionsupporting

confidence: 94%

“…Fourteen regressors (Supplementary Annex III) were used to determine variables influencing WTP/WTCL. Due to dominant responses (above 90%), 'gender' and 'marital status' were excluded (Sewunet et al, 2022). From the bivariable interval regression model (model 1), variables with a value of p less than 0.25 were taken into the multivariable interval regression model (model 2).…”

Section: Data Processing and Analysismentioning

confidence: 99%

“…The weed is rather expanding, particularly on the northeastern side of Lake Tana (Dersseh et al, 2019;Kebedew et al, 2020). Therefore, integrated watershed management practices are recommended as sustainable solutions (Dersseh et al, 2019;Sewunet et al, 2022). If properly implemented, integrated watershed management could substantially reduce adverse impacts, such as pollution loads and nutrient enrichment (Wang et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

“…Thus, to apprehend the total economic benefit of the lake, it is necessary to include both direct and indirect users. Although a recent study by Sewunet et al (2022) assessed factors affecting the contribution of local people to the management of the weed in Lake Tana, the study considered a status-quo scenario assuming that "the prevention of water hyacinth infestation of Lake Tana through a watershed management program would work to keep the infestation levels constant at current levels and thus maintain ecosystem services gained from the lake at the current levels." However, for the sustainable management of the lake, a better future aiming at reducing and avoiding infestation (improvement of the ecosystem) should be suggested.…”

Section: Introductionmentioning

confidence: 99%

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Participatory management of weed infestation in Lake Tana - setting a better future in the front mirror

Sewunet

Girma²,

Debela³

et al. 2022

Front. Ecol. Evol.

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Lake Tana is one of the biosphere reserves in Ethiopia registered by the United Nations Educational, Scientific, and Cultural Organization (UNESCO). Water hyacinth is expanding in the lake owing to increased nutrient load from the watershed. As efforts from the government alone could not bring the anticipated change, local peoples’ engagement and contribution are believed to sustainably and effectively manage the watershed and prevent the weed’s spreading. This study, therefore, aims to estimate households’ contribution (willingness to pay–WTP–and willingness to contribute labor–WTCL–) to prevent and control water hyacinth and hence improve lake ecosystem services through a hypothetical watershed management in Lake Tana. This study applied quantitative and qualitative methods. It was conducted among 560 randomly selected households of the Libo-kemkem district using a contingent valuation method from March to April/2021. Eleven key informant interviews were also conducted. Bivariable and multivariable interval regression models were used to identify the determinants of households’ potential contribution. Thematic analysis was used to analyze the qualitative data. As the weed is believed negatively impact the ecosystem services provided by the lake, 72% of the respondents showed willingness to contribute to the proposed management program. About 32 and 39% of the respondents were willing to pay in cash and to contribute labor, respectively, to prevent weed infestation. On the other hand, 28% of them were neither willing to contribute in cash nor in labor to the hypothetical market. The findings showed respondents’ mean annual WTP and WTCL were 632.8 Ethiopian birr and 30.1 man-days per household, respectively. The place of residence, educational status, farm plot area, household income, family size, and conference participation significantly influenced WTP and/or WTCL. In this hypothetical improvement scenario, an estimated annual WTP and WTCL of nearly 12 million Ethiopian birr and 700 man-days per year, respectively, are reported considering the total households in the study area. Therefore, collaborative efforts by different stakeholders are the next steps to realize the hypothetical contributions.

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Section: Discussionsupporting

confidence: 94%

Section: Data Processing and Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Participatory management of weed infestation in Lake Tana - setting a better future in the front mirror

Sewunet

Girma²,

Debela³

et al. 2022

Front. Ecol. Evol.

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“…Choi et al [27] and Lee et al [22] analyze the WTP for an improved water quality by imposing agricultural restrictions in upstream areas. Finally, Sehreen et al [17] and Sewunet et al [28] examine the WTP for adopting watershed management programs and water pollution management systems.…”

Section: Literature Reviewmentioning

confidence: 99%

Investigating the Value of Parallel Pipeline Projects for Water Supply: A Contingent Valuation Study in South Korea

Hong,

Shin,

Choi

et al. 2024

Water

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Parallel pipeline projects can contribute to ensuring a safe and stable water supply and preventing or mitigating losses caused by water pipeline accidents. However, because these projects require a significant investment, feasibility tests are essential prior to their implementation. Considering the public nature of the water supply, the direct beneficiaries of the project and people from other regions can place value on such projects. Thus, this study estimates the value of parallel pipeline projects using the contingent valuation method (CVM) and the swing weighting technique. We constructed two contingent valuation surveys: one asking about the willingness to pay (WTP) for a parallel pipeline project within the respondent’s region and the other asking about the WTP for a project outside the region. The results show that the annual WTP per household for projects within and outside the region was 113,669 KRW (87.98 USD) and 5493 KRW (4.25 USD), respectively. These results indicate that the value perceived by people from outside the region should be considered. Additionally, the results from the swing weighting technique and WTP analysis show that the values that respondents generally consider important and those that can leverage the overall project value are distinct. This study’s results provide insights into the implementation of parallel pipeline projects in South Korea. Furthermore, this study’s analytical framework can be used for the valuation of other public infrastructure projects.

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Global impact of water hyacinth (Eichhornia Crassipes) on rural communities and mitigation strategies: a systematic review

Abba,

Sankarannair

2024

Environ Sci Pollut Res

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On the use of contingent valuation method to assess factors affecting the contribution of local people for the management of water hyacinth in Lake Tana, northwestern Ethiopia

Cited by 7 publications

References 22 publications

Participatory management of weed infestation in Lake Tana - setting a better future in the front mirror

Participatory management of weed infestation in Lake Tana - setting a better future in the front mirror

Investigating the Value of Parallel Pipeline Projects for Water Supply: A Contingent Valuation Study in South Korea

Global impact of water hyacinth (Eichhornia Crassipes) on rural communities and mitigation strategies: a systematic review

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