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A digital GIS update to the classic Ulbrich’s 1930 map of muskrat (Ondatra zibethicus) population range expansion in Central Europe

Author

Listed:
  • David Shanafelt

    (BETA - Bureau d'Économie Théorique et Appliquée - AgroParisTech - UNISTRA - Université de Strasbourg - Université de Haute-Alsace (UHA) - Université de Haute-Alsace (UHA) Mulhouse - Colmar - UL - Université de Lorraine - CNRS - Centre National de la Recherche Scientifique - INRAE - Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement)

Abstract

Historical data sets are valuable for learning and developing new tools for understanding and predicting species spread and dispersal. We update the classic Ulbrich (1930) map of muskrat (Ondatra zibethicus) spread in Central Europe, converting it to a set of GIS maps. We illustrate the updated data by fitting a set of simple models that measure the rate of spread of species. We recover the classic findings of radial spread from previous studies and, with the finer-scale data, show when the traditional radial assumption of spread breaks down. We believe that our version of the Ulbrich data is a valuable tool for pedagogy and a type of digital playground for the design and development of new tools to estimate species spread and dispersal.

Suggested Citation

  • David Shanafelt, 2023. "A digital GIS update to the classic Ulbrich’s 1930 map of muskrat (Ondatra zibethicus) population range expansion in Central Europe," Post-Print hal-04522911, HAL.
    • Handle: RePEc:hal:journl:hal-04522911
    DOI: 10.3391/bir.2023.12.4.28
    as

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