144,368 research outputs found

    MEASURING VALUES FOR WETLANDS PROTECTION IN A DEVELOPING COUNTRY FROM DOMESTIC AND INTERNATIONAL CITIZEN GROUPS

    Get PDF
    Because of pressures to convert natural areas to commercial economic development uses, protecting natural areas in developing countries is a major challenge. A developing country may desire to protect natural areas, but relatively high out-of-pocket and opportunity costs of protection may pose considerable hurdles. To help protect natural areas in a developing country, the international community often gets involved; for example, providing funds to purchase and preserve natural areas such as rain forests, river corridors and wetlands. Thus, to determine the economic feasibility of protecting a particular natural area in their country, decision-makers in a developing country may be interested in measuring the economic value (e.g., willingness-to-pay) of protection on the part of both residents and nonresidents of the country. The overall purpose of this study was to test a common methodology for measuring both domestic and international citizen groups' values (willingness-to-pay) for protecting a natural area in a developing country. The natural area studied was a wetland area called the Nariva Swamp located in the developing country of Trinidad. A common contingent valuation survey was conducted both in Trinidad and the State of Georgia, USA. The survey instrument worked well in both countries demonstrating the feasibility of administering a common valuation methodology to very different citizen groups living in developing and developed countries. The Nariva Swamp in Trinidad is one of the largest freshwater wetlands in the Caribbean, supporting a diverse population of flora and fauna, including waterfowl, anacondas, and manatees. The swamp also supports recreation in the form of hunting, fishing, and ecotourism. Furthermore, subsistence rice and vegetable farming and subsistence fishing of cascadura fish and conchs occur in the swamp. However, some commercial rice production by local residents, who do not have legal ownership of land, is causing serious environmental damage to the swamp. Overuse of water due to commercial rice production with itinerant irrigation canals has increased the influx of sea water into the swamp, thereby increasing salinity of water in the swamp. If this continues, it could be devastating for flora and fauna in the swamp, local subsistence farming and fishing, and future ecotourism benefits. In order to avoid a worst-case scenario, human activities in the swamp should be balanced to provide economic benefits while protecting the ecosystem functions and services that support these benefits. Attaining such a balance requires knowledge of Nariva Swamp values and benefit-cost analyses of swamp use and management. The contingent valuation method can be applied to measure use and nonuse values of protecting natural areas. The contingent valuation survey instrument for measuring values of protecting the Nariva Swamp to Trinidad and Georgia, USA citizens was developed jointly by researchers at the University of the West Indies and the University of Georgia. The survey instrument collected data on qualitative attitudes and preferences for Nariva Swamp protection, and quantitative data to estimate willingness-to-pay (WTP) for protecting the swamp. The survey instrument was administered to a sample of general public citizens in both countries. From these data, a common valuation model was estimated and used to calculate mean WTP for Nariva Swamp protection on the part of Trinidad and Georgia citizens. The valuation model generated theoretically consistent and expected results. Trinidad respondents show a higher WTP than Georgia respondents due to greater familiarity and proximity with the Nariva swamp. In this case study, the valuation results suggest that monetary support from USA citizens for protecting the Nariva Swamp may be relatively low. Thus, the economic feasibility of protecting the swamp would likely depend mostly on a domestic analysis that compares benefits (e.g., aggregate willingness-to-pay) and costs to Trinidad citizens of protecting the swamp. Whether or not benefits to the international community should even be considered in a developing country's benefit-cost analysis of protecting a domestic natural area is open to debate and discussion. If benefits of protecting a natural area to the international community are considered by decision-makers in a developing country to be relevant and important, a question for discussion remains as to whether a different natural area in a different developing country would generate more interest and WTP for protection on the part of the international community. To obtain more insight on the causes of differences in preferences and values between developing and developed country citizens for protecting a natural area in a developing country, survey responses to a series of environmental values and attitudes questions were also analyzed. Responses to environmental value questions indicate the relative weight Trinidad and Georgia citizens place on use and nonuse values of Nariva Swamp protection. We were interested to learn if nonuse values of Nariva Swamp protection are important to Trinidad citizens, and if use values are important to Georgia citizens since part of the purpose of the overall study was to gauge the potential of the Nariva Swamp as an international ecotourism destination. Results suggest that relatively few Georgia citizens would be interested in visiting the Nariva Swamp, but very many Trinidad citizens would like to visit the swamp. Nonuse values appeared to represent a small portion of Trinidad citizens support for Nariva Swamp protection. We also compared responses from Trinidad and Georgia citizens to questions designed to assess their general environmental ethics and attitudes towards natural area protection. Research literature suggests that, generally, respondents from more economically developed countries should show a greater interest in environmental issues and natural area protection. This is due to a shift from focus on physical sustenance and safety to a broader understanding and appreciation for quality of life, based on Maslow's hierarchy of needs. However, more recent research suggests this approach could be inaccurate. The survey results provide evidence of consistent environmental ethics and natural area protection attitudes on the part of Trinidad and Georgia citizens, with some notable differences that would provide for interesting debate and discussion.Resource /Energy Economics and Policy,

    How Hard Is It to Drain a Swamp?

    Full text link
    Some humid, summer evening, go out and listen to the swamp. It chirps, it keens, it hoots, it chitters. It is both quiet and restless, serene and ominous. It is alive, full of bats’ wings, copperheads, and clouds of insects. Imagine how it will respond when it learns you plan to drain it. That thought has some political parallels as Donald Trump finds himself at odds with the bureaucracy of the federal government in an effort to “drain the swamp” of the so-called Deep State. Thomas Jefferson did a good deal of swamp-draining after his victory over Federalist John Adams in 1800. (excerpt

    Bacon\u27s Swamp- Ghost of a Central Indiana Natural Area Past

    Get PDF
    Bacon’s Swamp was identified in the 1920s as a ca. 12 ha glacial kettle lake bog system at the southernmost limits of these habitats in Indiana. Located just 9.6 km from the center of Indianapolis, the site was all but destroyed in the mid-20th century by urban expansion. Prior to habitat conversion at the site, Bacon’s Swamp was a frequent location for Butler University ecology class field trips and student research projects. Herbarium specimens and published inventory records allow for analysis of the historical vegetation of Bacon’s Swamp using modern techniques. Floristic Quality Assessment applied to these historical records reveals Bacon’s Swamp was a regionally significant natural area, with a native Floristic Quality Index (FQI) value of 60 and a mean native Conservation Coefficient value of 4.2. Little of this unusual, high-quality habitat remains. A 2010 botanical inventory at the site documents decline in habitat with the loss of species that have a fidelity to high-quality habitat, with a corresponding drop in FQI to 20 and the addition of invasive non-native plants. Re-analysis of Bacon’s Swamp historical flora supports the view that it was a significant wetland natural area and floristically unique in Central Indiana

    Sparse Estimation with the Swept Approximated Message-Passing Algorithm

    Full text link
    Approximate Message Passing (AMP) has been shown to be a superior method for inference problems, such as the recovery of signals from sets of noisy, lower-dimensionality measurements, both in terms of reconstruction accuracy and in computational efficiency. However, AMP suffers from serious convergence issues in contexts that do not exactly match its assumptions. We propose a new approach to stabilizing AMP in these contexts by applying AMP updates to individual coefficients rather than in parallel. Our results show that this change to the AMP iteration can provide theoretically expected, but hitherto unobtainable, performance for problems on which the standard AMP iteration diverges. Additionally, we find that the computational costs of this swept coefficient update scheme is not unduly burdensome, allowing it to be applied efficiently to signals of large dimensionality.Comment: 11 pages, 3 figures, implementation available at https://github.com/eric-tramel/SwAMP-Dem

    Bryophytes from Saiwa Swamp National Park, Kenya

    Get PDF
    57 species of bryophytes belonging to 30 families are reported from Saiwa Swamp National Park, of which 57 species are new for Saiwa Swamp National Park and 10 records are new for Kenya, indicated by * and ** respectively. Although small in surface area (15.5 sq.km.) the park represents an undercollected area in Kenya with a good diversity of bryophytes

    Genetic Variation of MtDNA Cytochrome Oxidase Subunit I (COI) in Local Swamp Buffaloes in Indonesia

    Full text link
    The objective of this research was to identify genetic variation of mitochondria DNA especially in cytochrome oxidase subunit I (COI) among population of Indonesian buffaloes. Samples of swamp buffaloes were collected from Aceh (n= 3), North Sumatra (n= 3), Riau (n= 3), Banten (n= 3), Central Java (n= 3), West Nusa Tenggara (n= 3) and South Sulawesi (n= 3), and riverine buffalo from North Sumatra (n= 1) out of group for comparison. Sequence of COI was analyzed using MEGA 5.10 software with neighbor-joining method kimura 2-parameter model to reconstruct phylogeny tree. The result showed that three haplotypes for swamp buffalo and one haplotype for riverine buffalo in Indonesia resulted from 41 polymorphic sites. This finding showed that the COI gene could be considered as a marker to distinguish among swamp buffaloes in Indonesia

    Origin of Grassy Lake

    Get PDF
    Two theories have been proposed to explain the formation of Grassy Lake. One attributes the formation of the swamp to earthquake; the other states that it is one of the many so-called oxbow lakes in the area. A study of aerial photographs showing the absence of fault zones and related sandblows tends to rule out any possibility of an earthquake origin, and in size and shape the swamp in no way resembles an oxbow lake. The aerial photographs reveal instead that the formation of the swamp was due to a natural levee being built up by a river which meandered through the low area now called Grassy Lake. The presence of dense stands of bald cypress (Taxodium distichum (L.) Richard), which grow in abandoned river channels, and a knowledge of the ecology of bald cypress support this hypothesis

    Summertime Swamp Love by Patricia Young

    Get PDF
    Review of Patricia Young\u27s book of poems, Summertime Swamp Love

    The Existence Value of Peat Swamp Forest in Peninsular Malaysia

    Get PDF
    Forests form the dominant natural ecosystem in Malaysia. About 55% of Malaysian land area is forested and endows a rich diversity of flora and fauna. Peat swamp forests constitute a significant component of forest and account for about 75% of the country’s total wetlands. Many peat swamp forests have already been converted to new land uses including palm oil plantations, agriculture and housing. The south-east Pahang peat swamp forest (SEPPSF), located at Pahang state is the largest peat swamp forest cover in Peninsular Malaysia and is believed to be the mainland Asia’s largest and intact peat swamp forest. It harbours unique flora and fauna, provides benefits and services of national interest and supports the livelihood of the aborigines (Orang Asli) communities. Many of the benefits and services from peat swamp forests are unpriced and this can lead to faulty land use decision making. Non market valuation can provide important information on the value of many currently unpriced items and enable decision makers to consider the opportunity costs of proposed land use changes. Total economic value (TEV), which includes use and non-use values, is a complex method to determine the estimated total benefits for a tropical forest. This study reports on a contingent valuation study of existence value (non-use value) of the SEPPSF. The economic value is based on the mean maximum willingness to pay of the households in Kuantan (the capital city of Pahang state) to conserve the forest.SEPPSF, economic value, CVM, Agricultural and Food Policy, Consumer/Household Economics, Environmental Economics and Policy, Farm Management, Land Economics/Use,

    A Swamp Called Mama

    Get PDF
    Poetry by Con Murray
    • …
    corecore