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Incomes, Attitudes, and Occurrences of Invasive Species: An Application to Signal Crayfish in Sweden

Author

Listed:
  • Ing-Marie Gren

    (Swedish University of Agricultural Sciences, Department of Economics)

  • Monica Campos

    (Swedish University of Agricultural Sciences, Department of Economics)

  • Lennart Edsman

    (Freshwater Laboratory)

  • Patrik Bohman

    (Freshwater Laboratory)

Abstract

This article analyzes and carries out an econometric test of the explanatory power of economic and attitude variables for occurrences of the nonnative signal crayfish in Swedish waters. Signal crayfish are a carrier of plague which threatens the native noble crayfish with extinction. Crayfish are associated with recreational and cultural traditions in Sweden, which may run against environmental preferences for preserving native species. Econometric analysis is carried out using panel data at the municipality level with economic factors and attitudes as explanatory variables, which are derived from a simple dynamic harvesting model. A log-normal model is used for the regression analysis, and the results indicate significant impacts on occurrences of waters with signal crayfish of changes in both economic and attitude variables. Variables reflecting environmental and recreational preferences have unexpected signs, where the former variable has a positive and the latter a negative impact on occurrences of waters with signal crayfish. These effects are, however, counteracted by their respective interaction effect with income.

Suggested Citation

  • Ing-Marie Gren & Monica Campos & Lennart Edsman & Patrik Bohman, 2009. "Incomes, Attitudes, and Occurrences of Invasive Species: An Application to Signal Crayfish in Sweden," Environmental Management, Springer, vol. 43(2), pages 210-220, February.
    • Handle: RePEc:spr:envman:v:43:y:2009:i:2:d:10.1007_s00267-008-9210-7
    DOI: 10.1007/s00267-008-9210-7
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