Valuing the Hikkaduwa Coral Reef: An Application of the Zonal Travel Cost Method

Hikkaduwa marine ecosystem is one of the major attractions among the recreationists for its fringing coral reef and the beach. However, a rapid degradation of the coral reef and the beach pollution are the main influences on the sustainable tourism. In this context, valuing the Hikkaduwa Marine National Park is important in order to draw the attention for the protection of the ecosystem. The objectives of this research were to estimate the economic values derived by the local visitors and to derive an optimal entrance fee. This research also aimed at investigating factors that influence visitation rates. Data collected from an onsite survey carried out among a sample of 231 visitors from 16 districts in Sri Lanka were analysed, using the Zonal Travel Cost Method to estimate the recreational value derived by the local visitors. The travel cost function showed that visitation rate is significantly and positively influenced by recreational experience and urban population fraction. The explanatory power of the estimated model was strong with an adjusted R2 value of 0.752. In the second stage, these significant explanatory variables were used to construct the demand curve. The estimated local recreational value of the park is around 380 times the income from the local visitors per year, which is worth about Rs. 1,300 per local visitor. As this site does not have a proper entrance fee, the calculated entrance fee which maximises the total revenue was around Rs.1,100. However, the current level of visitors will be reduced by more than 50%, if this entrance fee is imposed implying intragenerational equity issues. The outcomes of this research are useful in the management decision making for the protection of the Hikkaduwa coral reef and the surrounding environment.Keywords: Consumer surplus, Hikkaduwa coral reef, Tourism, Zonal Travel Cost Metho

First insights into the phylogenetic diversity of Mycobacterium tuberculosis in Nepal

BACKGROUND: Tuberculosis (TB) is a major public health problem in Nepal. Strain variation in Mycobacterium tuberculosis may influence the outcome of TB infection and disease. To date, the phylogenetic diversity of M. tuberculosis in Nepal is unknown. METHODS AND FINDINGS: We analyzed 261 M. tuberculosis isolates recovered from pulmonary TB patients recruited between August 2009 and August 2010 in Nepal. M. tuberculosis lineages were determined by single nucleotide polymorphisms (SNP) typing and spoligotyping. Drug resistance was determined by sequencing the hot spot regions of the relevant target genes. Overall, 164 (62.8%) TB patients were new, and 97 (37.2%) were previously treated. Any drug resistance was detected in 50 (19.2%) isolates, and 16 (6.1%) were multidrug-resistant. The most frequent M. tuberculosis lineage was Lineage 3 (CAS/Delhi) with 106 isolates (40.6%), followed by Lineage 2 (East-Asian lineage, includes Beijing genotype) with 84 isolates (32.2%), Lineage 4 (Euro-American lineage) with 41 (15.7%) isolates, and Lineage 1 (Indo-Oceanic lineage) with 30 isolates (11.5%). Based on spoligotyping, we found 45 different spoligotyping patterns that were previously described. The Beijing (83 isolates, 31.8%) and CAS spoligotype (52, 19.9%) were the dominant spoligotypes. A total of 36 (13.8%) isolates could not be assigned to any known spoligotyping pattern. Lineage 2 was associated with female sex (adjusted odds ratio [aOR] 2.58, 95% confidence interval [95% CI] 1.42-4.67, p = 0.002), and any drug resistance (aOR 2.79; 95% CI 1.43-5.45; p = 0.002). We found no evidence for an association of Lineage 2 with age or BCG vaccination status. CONCLUSIONS: We found a large genetic diversity of M. tuberculosis in Nepal with representation of all four major lineages. Lineages 3 and 2 were dominating. Lineage 2 was associated with clinical characteristics. This study fills an important gap on the map of the M. tuberculosis genetic diversity in the Asian reg

Valuation of Marine Ecosystem Conservation: A Case Study on Hikkaduwa National Park, Sri Lanka

Hikkaduwa National Park is one of the four marine national parks in Sri Lanka and a main recreational attraction. Hikkaduwa coral reef is a typical shallow fringing reef with an average depth of around 5 metres. However, the reef has suffered high degradation due to both natural and manmade causes. Despite being designated as a protected area, the coral reef has been subjected to constant exploitation including removal of breeding ornamental fish for the commercial market. This stress the need for sustainable management of the resource related to tourism activities. This research aims at providing an economic valuation of coral reef management policy options, using stated preference-choice experimental analysis. Random sampling method was used and 200 visitors were interviewed using pretested questionnaire with different choice sets. Tourists were interviewed onsite from June to July 2019 for data collection. A conditional logit model was employed to analyse the data using STATA14. According to the results, highest number (34%) of respondents had A/L qualifications. Many visitors (50%) were from Gampaha and Colombo Districts. The estimated model is statistically significant with 0.46 pseudo R-sq value. The cost variable is statistically significant but negatively influenced confirming theoretical expectations. The main attributes selected for the study were condition of the coral reef, cleanliness of the beach, condition of the boats and availability of facilities. The condition of the coral reef was considered as an important attribute, but healthy and improved coral reef is insignificant in the model. In addition, bleached and broken coral was a less important variable compared to status quo option. Regarding the attribute of cleanliness of the beach, clean beach and no proper management of beach were less important compared to somewhat clean beach. Condition of the boats were the other attribute presented and new boats with safe jackets were considered as important compared to no safe jackets and old boats and boats with engines that are not properly functioning and with some safe jackets. The significant variables were used to estimate the marginal willingness to pay (WTP) values. According to the results Marginal Willingness To Accept (MWTA) if the corals are bleached and broken is Rs. 711, if the beach is clean Rs. 684 and if not properly managed Rs.66.38. The usefulness of the derived results in guiding the park management are discussed.Keywords: Coral reef, Choice experiment analysis, Hikkaduwa National Park, Sustainable tourism, Willingness to pa

The Charging Structure for the Great Barrier Reef - A review of willingness to pay

The Great Barrier Reef Marine Park Authority (GBRMPA or the Reef Authority) is currently conducting a comprehensive review of the charging structure for the use of the Great Barrier Reef (GBR) Marine Park with a view to implement potential changes from 1 July 2023

Taxation formula for tobacco in Sri Lanka

Article 06 of the WHO Framework Convention on Tobacco control emphasizes the importance of implementing effective tax and price policies for Tobacco products. To fight against the Tobacco epidemic WHO has introduced the MPOWER package which R stands for raising taxes on Tobacco. According to WHO standards, 70% of the excise tax from the retail price will contribute to an effective Tobacco tax indexation policy. National Authority on Tobacco and Alcohol organized Tobacco Taxation and Illicit Trade virtual workshop with the collaboration of WHO FCTC Knowledge Hub on Tobacco Taxation, Research Unit on the Economics of Excisable Products, University of Cape Town. The developed Tobacco tax indexation formula of the National Authority on Tobacco and Alcohol was modified by including exogenous factor with the guidance of experts of WHO FCTC Secretariat Knowledge Hub on tobacco taxation. Tobacco tax simulation modeling can be used to predict how much tobacco consumption will decrease, and government revenue will increase if there is a change in the tobacco excise tax structure and an increase in the level of taxation. Preliminary evidence from the TETSiM model predicts that a 91.6 to 124.6 billion increase in tobacco excise taxation from the current 2022 to 2026 would lead to a 1.1 % drop in consumption and approximately 101.8 to 136.9 billion increases in government revenue. The finding of the modeling of Tobacco taxes with the TETSiM model will lead to an increase in Tobacco tax revenue and decrease Tobacco consumption in Sri Lanka

Assessing Visitor Preferences and Willingness to pay for Marine National Park Hikkaduwa: application of choice experiment method

Eco-tourism all over the world is threatened by the fact that the coral reefs and associated ecosystems are in a process of disappearing at an accelerated rate due to several natural and anthropogenic causes. In this context, the Marine National Park Hikkaduwa (MNPH), one of the four marine national parks in Sri Lanka, that features a fringing coral reef with a high degree of biodiversity, reports a decreasing trend in visitation mainly due to a condition of coral bleaching caused by an El Nino effect. Unfortunately, the regeneration of the corals is found to be slowed by continuous anthropogenic activities. Against this background, the research focuses on investigating how visitor behaviour changes with the degraded situation and what avenues are available to attract more visitors to ensure benefit flows. In this concern, visitor preferences regarding the quality of the habitats and other facilities and their significance were analysed under a conditional logistic regression model. Further, a choice experiment was carried out with a randomly selected group of 200 visitors to diagnose their response to the present condition of the coral reef, the beach, and the facilities provided. Under a conditional logistic model, it was discovered that the condition of the coral reef is an important attribute that answers the question of why visitors are not willing to pay if the corals are bleached and broken. It was also discovered that the visitors are willing to pay LKR 322.52 if they are provided with new boats and new safety jackets. The results indicate that benefit flows could be enhanced with the restoration of coral ecosystems and the improvement of the physical infrastructure. Overall, the research attempts to establish that the standard maintenance of the coral reef along with high-quality visitor welfare facilities to match visitor preferences will positively impact all types of payment compliance issues with regard to the visitors

Web-mobile based application to detect the elephants’ intrusion in Sri Lanka: a Geofencing based approach

Protecting the endangered Sri Lankan elephants and mitigating the Human-Elephant Conflict (HEC) require proper understanding of the subject. Yet, so far, the available information is fragmented or not easily accessible and often it is outdated or erroneous. While efforts are ongoing to rectify this, it is imperative that, in order to make the most effective use of information, there should be a state-of-the-art system to centralize available information, make it easily accessible and easily updated via various methods. This study attempted to evaluate the potential for using web-mobile applications and geofencing technique to detect the elephants’ intrusion in Udawalawe National Park in Sri Lanka. To fulfill the aforesaid requirement, as an innovative idea, a sophisticated tracking system which comprises a webmobile based application server and a mobile application leveraging embedded GPS data in images is developed as a prototype and tested in Udawalawe National Park having selected an elephant to fix the GPS collar. The mobile application helps to obtain the relevant elephant data by accessing the geospatial database which would be implemented in the cloud-based environment in a geofence. This system thus addresses the main problems of identification, tracking and database maintenance of identification and tracking elephants and maintains the record of them. Further, this will address the monitoring and implementation of a geospatial database of elephants. Using these feasibility study results, an infrared (IR) camera and face recognition system developed to absorb the data and present the results of the individual elephant for free access in a website to be developed. This information could be used to mitigate the human elephant conflict in Sri Lanka, and help monitor elephant behavior to greatly benefit the relevant parties like farmers and wildlife conservationists

Microfold (M) cells: important immunosurveillance posts in the intestinal epithelium

The transcytosis of antigens across the gut epithelium by microfold cells (M cells) is important for the induction of efficient immune responses to some mucosal antigens in Peyer’s patches. Recently, substantial progress has been made in our understanding of the factors that influence the development and function of M cells. This review highlights these important advances, with particular emphasis on: the host genes which control the functional maturation of M cells; how this knowledge has led to the rapid advance in our understanding of M-cell biology in the steady-state and during aging; molecules expressed on M cells which appear to be used as “immunosurveillance” receptors to sample pathogenic microorganisms in the gut; how certain pathogens appear to exploit M cells to infect the host; and finally how this knowledge has been used to specifically target antigens to M cells to attempt to improve the efficacy of mucosal vaccines

Lung Recruitment Strategies During High Frequency Oscillatory Ventilation in Preterm Lambs

Background: High frequency oscillatory ventilation (HFOV) is considered a lung protective ventilation mode in preterm infants only if lung volume is optimized. However, whilst a “high lung volume strategy” is advocated for HFOV in preterm infants this strategy is not precisely defined. It is not known to what extent lung recruitment should be pursued to provide lung protection. In this study we aimed to determine the relationship between the magnitude of lung volume optimization and its effect on gas exchange and lung injury in preterm lambs.Methods: 36 surfactant-deficient 124–127 d lambs commenced HFOV immediately following a sustained inflation at birth and were allocated to either (1) no recruitment (low lung volume; LLV), (2) medium- (MLV), or (3) high lung volume (HLV) recruitment strategy. Gas exchange and lung volume changes over time were measured. Lung injury was analyzed by post mortem pressure-volume curves, alveolar protein leakage, gene expression, and histological injury score.Results: More animals in the LLV developed a pneumothorax compared to both recruitment groups. Gas exchange was superior in both recruitment groups compared to LLV. Total lung capacity tended to be lower in the LLV group. Other parameters of lung injury were not different.Conclusions: Lung recruitment during HFOV optimizes gas exchange but has only modest effects on lung injury in a preterm animal model. In the HLV group aiming at a more extensive lung recruitment gas exchange was better without affecting lung injury