In order to control for censoring and the integer nature of trip demand, the use of count ata models in travel cost analysis is attractive. Two such models, the Poisson and negative binomial, are discussed. Robust estimation techniques that loosen potentially stringent distributional assumptions...

In this paper, we examine heterogeneity in the trip preferences of recreationists by applying a random parameters negative binomial model and a latent class negative binomial model to a panel data set of beach users at a site on the west coast of Ireland. This is the first such attempt in the...

Eelgrass is the most widespread plant in temperate coastal waters. It is regarded as a useful indicator of water quality because water clarity regulates its extension towards deeper waters, i.e. the depth limit. This study analyses the use of eelgrass depth limits as a bioindicator under the...

This paper deals with the protest bids issue in choice experiments. In the context of the Water Framework Directive, we examined local residents’ preferences for water quality improvements at a specific river basin in France. We used the choice experiment method with site-specific attributes...

The European Union (EU) Water Framework Directive (WFD) requires EU countries to achieve good status of all their waters by 2015. This should be achieved through the implementation of river basin management plans (RBMPs), which in turn are based on water resources baseline data. While it is too...

There is a growing concern that increased nutrient and sediment runoff from river catchments are a potential source of coral reef degradation. Degradation of reefs may affect the number of tourists visiting the reef and, consequently, the economic sectors that rely on healthy reefs for their...