Estimating wetland biodiversity values: a choice modelling application in Vietnam's Mekong River Delta

Nam, Thang; Bennett, Jeff

doi:10.1017/s1355770x08004841

Cited by 77 publications

(64 citation statements)

References 30 publications

(66 reference statements)

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“…In a CV study, Loureiro and Ojea (2008) find almost identical WTP for different population increases of the guillemot, except when they explain that it is common elsewhere; then WTP decreases with increasing population levels. Do and Bennett (2008) find a positive WTP for increasing populations of a crane species, but do not report for different population levels.…”

Section: Literature and Hypothesesmentioning

confidence: 66%

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Valuation of wildlife populations above survival

2011

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Biodiversity valuation studies often address the willingness to pay (WTP) for species survival. Many policy initiatives, however, target more generally the population levels of wildlife. This study investigated the empirical question of WTP for enhancing species populations also beyond the survival level. Respondents' WTP for increases in population levels of endangered species as well as of general wildlife in three habitats were evaluated in a choice experiment, by trading off against income tax and restrictions in recreational access. Any person may have several motives for deriving value from enhanced wildlife populations, and variation in values were analysed in a Latent Class model. We document considerable discrete variations in WTP and respondents fall into several distinct groups. The first group express a significant WTP for saving endangered species only and has no positive WTP for higher population levels, indicating that existence values dominate their WTP. The second group put emphasis on wildlife, but with equal weight attached to moderate and high increases in population for 'Endangered' as well as 'General' wildlife. Thus, they appear insensitive to scope. The pattern suggests that WTP may be affected by warm glow or deontological motivations. The third group reveal significant WTP, but for at least one of the wildlife attributes they prefer moderate increases over high. This could be due to moral motivations or reflect provision cost concerns. Our findings point to the caution needed when using results from studies focusing on species survival in valuing broader initiatives.

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Section: Literature and Hypothesesmentioning

confidence: 66%

“…Other studies again use simply the number of preserved species, with no particular focus on the specific species (e.g. Giraud et al 1999;Lehtonen et al 2003;Do and Bennett 2008;Black et al 2010).…”

Section: Literature and Hypothesesmentioning

confidence: 99%

Valuation of wildlife populations above survival

2011

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“…Conservation values are likely high net social benefits (i.e. the biodiversity protection value of a typical wetland in the Mekong Delta was estimated from USD 0.52 million to USD 1.84 million [39]). Furthermore, the improvement of conservation can lead the development of tourism services -one of important economic sectors (i.e.…”

Section: Citationmentioning

confidence: 99%

Restoration of Melaleuca Swamp Ecosystem for Bird Diversity in the Mekong Delta of Vietnam

Tran

Matusch

2017

MOJES

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This paper conducts an original study to examine the restoration of an endemic tropical wetland for bird enrichment in the Mekong Delta. Recovery of swamp Melaleuca forest was a key driver provided an appropriately structural landscape and environment to enrich bird diversity in the study area. During the period 2003 -2013, bird enrichment was increased to 159 bird species after a forest fire, happened in 2002, in which 15 waterbird species with 17,366 individuals; and populations of three waterbirds under the Global and Regional Endangered Lists with hundreds of individuals in UMT National Park. The recovery of forest and richness of birds were likely two important indicators of the successful restoration of Melaleuca swamp ecosystem in the area. Thus, relationships of six variables, involving Melaleuca recovery, bird richness, conservation values, technical awareness, tourism services, and wildfire, were considerable drivers needed to be understood for improving a sustainable management of forested wetland ecosystems. The restore of swamp Melaleuca forest can contribute an important role for the East Asian-Australasian Flyway of birds.

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“…The result may be complete destruction of habitat for large water birds (Wege et al, 1999) and human livelihoods (Do and Bennett, 2009 …”

Section: Hydrology and Land Usementioning

confidence: 99%

“…wetland values and complex relationships between the drivers have caused further degradation (Do and Bennett, 2009;Ni et al, 2006;Ni et al, 2003;Truyen et al, 2014a;van Der Schans, 2007). Pre-DoiMoi (1976-1986 In the early 1970s new large-scale economic zones, cooperatives and state farms and forests, were established in the MD (Hill, 1984;Miller et al, 1999;Phong et al, 2008;Tanaka, 2001).…”

Section: Land Use Change In the Mekong Deltamentioning

confidence: 99%

A study of the drivers of land use change in the Ha Tien Plain region of the Mekong Delta, Vietnam

Nguyen¹

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The wetlands of the Mekong Delta (MD) have contributed prominently to economic development in Vietnam, especially to agricultural and fisheries development. Unfortunately, the design of wetland utilization has traditionally been considered from an economic rather than ecological perspective, and wetlands utilization has suffered from a lack of scientific guidance. Many wetlands have been lost because their full value to society was not taken into account. Furthermore, the status of the delta's biodiversity is both poorly known and poorly documented. Decades of over-exploitation of the wetland ecosystems have had detrimental effects on the environment. The maintenance of the important economic functions of the MD is dependent on maintaining the wetlands' ecosystem functions.This thesis addresses several gaps in the broader wetland conservation literature by focusing on the research problem "How can the drivers of land use change in the study area be better managed to lead to more sustainable outcomes?" Using Systems Thinking in combination with Bayesian Belief Networks modelling methods, and a case study of the Phu My Lepironia grassland biodiversity conservation in Kien Giang, Vietnam, this thesis examines how successful community-based wetlands conservation can be achieved in the Mekong Delta. The study is comprised of the following components: (1) a review of the history of the drivers of wetlands degradation in the MD in order to better understand the transformation of the delta's wetlands in different periods, and an analyses of the driving forces of wetland loss and the underlying causes that derive from the differing policies of political regimes; (2) a study of various factors that influence wetlands grassland degradation and the likely consequences of conservation of the wetlands for carbon stocks; and (3) an analysis of the factors affecting how local communities' decide to make changes in their land use practices, and policy interventions that lead to the enhancement of livelihoods and improved sustainability of wetland grassland conservation in the study area.The drivers that have contributed to wetland loss and degradation in the Mekong Delta over the course of 200 years can be divided into five periods. The drivers of wetland losses have included: (1) resettlement and economic development policies; (2) population growth and urbanization; (3) demand for food and reclamation of wetlands for agriculture, construction of canals and construction of dikes for flood protection systems; (4) expansion of travel systems (waterways and roads); and (5) exploitation of wetlands natural resources. As a result of these factors, only 0.068 million ha of the original 4.0 million ha of the MD currently remain as a primary swamp forest ecosystem.ii The analysis presented in this thesis estimates the value of CO2 sequestered by different Mekong Delta wetland ecosystems (mangroves, Melaleuca swamps and wetland grasslands) to be between 5.53 Mt CO2e for grasslands ecosystem to 37.49 Mt CO2e for mangrove ecosystem...

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Estimating wetland biodiversity values: a choice modelling application in Vietnam's Mekong River Delta

Cited by 77 publications

References 30 publications

Valuation of wildlife populations above survival

Valuation of wildlife populations above survival

Restoration of Melaleuca Swamp Ecosystem for Bird Diversity in the Mekong Delta of Vietnam

A study of the drivers of land use change in the Ha Tien Plain region of the Mekong Delta, Vietnam

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