Description Format Author(s) Source Examples
Ecoregions for Wisconsin counties according to Figure 1 in Lyons et al. (2001).
A data frame with 72 observations on the following 2 variables.
A string that is the county name.
A string that idicates the county's ecoregion: North
, South
, or Both
.
Derek H. Ogle and Joseph T. Mrnak.
Estimated from Figure 1 in Lyons, J., R.R. Piette, and K.W. Niermeyer. 2001. Development, validation, and application of a fish-based index of biotic integrity for Wisconsin's large warmwater rivers. Transactions of the American Fisheries Society 130:1077-1094.
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