Of the 70 species of mammals reported from Iowa since European settlement, 39 (55%) are extirpated, rare, or declining. Twenty-nine (42%) are not appreciably declining and 2 (3%) are increasing in number and distribution. Continued pressure to clear and row-crop as much land as possible is placing an increasing stress on the mammals of Iowa.
Proceedings of the Iowa Academy of Science
©1981 Iowa Academy of Science, Inc.
Bowles, John B.
"Iowa's Mammal Fauna: An Era of Decline,"
Proceedings of the Iowa Academy of Science, 88(1), 38-42.
Available at: https://scholarworks.uni.edu/pias/vol88/iss1/11