Teofilo Ozuna

Estimating a System of Recreation Demand Functions Using a Seemingly Unrelated Poisson Regression Approach

In this article, a seemingly unrelated Poisson regression model is presented as an alternative to using Zellners seemingly unrelated regression model for estimating a system of recreation demand functions. The seemingly unrelated Poisson regression model provides estimates that are asymptotically more efficient than equation-by-equation Poisson estimates and circumvents the bias and inconsistency problems that result when using A. Zellners seemingly unrelated regression model. Additionally, the seemingly unrelated Poisson regression model is applied to an empirical problem dealing with the value of recreational boating and the findings indicate that the seemingly unrelated regression model consumer surplus estimates are substantially different from those of the seemingly unrelated Poisson regression model. Copyright 1994 by MIT Press.

The Value of the Gulf of Mexico Recreational Red Snapper Fishery

This study estimates the value of recreational red snapper fishing in the Gulf of Mexico. Additionally, the study shows how to decompose the estimated red snapper recreation demand function into changes: (i) due to recreationists who were not taking recreational red snapper fishing trips but were induced to take a trip in response to changes in catch rates and (ii) due to recreationists already taking trips and responding to changes in catch rates. The decomposition allows us to also decompose the estimated elasticities and consumer surplus. The results indicate that an improvement in expected fishing quality will increase consumer surplus and that most of the increase is contributed by recreationists who initially do not take recreational red snapper fishing trips, but later take a positive number of trips. This finding has important policy implications for managing the red snapper fishery in the Gulf of Mexico.

Assessing the Economic Impact of Outdoor Recreation Travel to the Texas Gulf Coast

The purpose of this study was to estimate the economic impacts of outdoor recreation activity (specifically, sport fishing, hunting, picnicking, swimming, camping, pleasure boating and sightseeing) on the economies of the Texas Gulf Coast region and the state of Texas in the form of output, employment, income, and state and local tax revenues. The statewide Texas Gulf Coast economic impacts were estimated using the statewide expenditure data for the entire Texas Gulf Coast collected for this study and the 1986 Texas Input-Output Model developed for this study. The results of this analysis indicated that the total output impact during 1986 amounted to

Iso 9000 -- A Marketing Tool For U.S. Agribusiness

1.19 billion for the Texas Gulf Coast and

A Bioeconomic Assessment of Gulf of Mexico Red Snapper Management Policies

1.91 billion for the state. The results also show that 59% of these impacts resulted from fishing-related travel to this area.

Joint Estimation of Revealed and Stated Preference Data: An Application to Recreational Red Snapper Valuation

The relevance of the ISO 9000 series of quality management systems (QMS) for U.S. agribusiness is analyzed. Certified firms from several industries were surveyed to determine their before (ex ante) and after (ex post) perspectives of the QMS. Results for the agribusiness subsample are compared to those for firms from other industries to determine if they behave differently. Anticipated marketing advantages (increasing market share and providing access to new markets) of the QMS were critical factors that encouraged the pursuit of the certificate. The average cost to attain certification was

Functional Form and Welfare Measures in Truncated Recreation Demand Models

101.400 and to maintain certification was an additional

Specification and Testing of Count Data Recreation Demand Functions

26,500 per year.

Testing for Misspecification in the Referendum Contingent Valuation Approach

Abstract The stocks of red snapper Lutjanus campechanus in the Gulf of Mexico have experienced a serious decline owing to (1) the overharvesting of adults by the commercial and recreational fisheries and (2) the incidental harvesting and discarding of juveniles by the shrimp fishery. In an effort to rebuild these stocks, since 1984 a series of policies has been implemented by the National Marine Fisheries Service and the Gulf of Mexico Fishery Management Council. To date, however, the results of these policies have not been completely addressed. This study comprehensively assesses their biological and economic consequences using integrated biological and economic models of the red snapper and shrimp fisheries. The analysis indicates that a combined-policy approach (implementing a joint policy for the red snapper and shrimp fisheries) is preferable to an individual-policy approach.

A Method of Imputing and Simulating Costs and Returns in Fisheries

This study extends the joint estimation of revealed and stated preference data literature by accounting for truncation in the revealed preference data. The analytical model and estimation procedure are used to estimate the value of recreational red snapper fishing in the Gulf of Mexico. This recreational red snapper valuation is decomposed into its direct and indirect components. As expected, the value of recreational red snapper fishing using the joint revealed-stated preference model proposed in this analysis is bracketed on the upper limit by the value obtained using the contingent valuation method and on the lower limit by the travel cost method. The results also indicate that the joint model improves the precision of estimated recreational red snapper valuation.