Endangered and Threatened Fish of Iowa compiled by Dean M. Roosa; in Cooperation with the Wildlife Section of the Iowa Conservation Commission, October 1977

(1977) Endangered and Threatened Fish of Iowa compiled by Dean M. Roosa; in Cooperation with the Wildlife Section of the Iowa Conservation Commission, October 1977. Natural Resources, Department of

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Abstract

Of the 72 species or subspecies of mammals reported from Iowa, 60 still exist in the state, although a few are sporadic visitors (Bowles, 1975). The remainder, mainly large herbivores or large carnivores, have become extirpated through persecution by European man as he settled the state. A few became extirpated or nearly so, but have become abundant through good game management; beaver and white-tailed deer are examples. Early Iowa, over 85% prairie, must have abounded with clear, pure streams with diverse fish populations. Today, such streams are at a premium and a number of fish species have been unable to adapt to the changes and have vanished; others are having an increasingly difficult time existing.