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Document Type

Research

Abstract

At the time of settlement Iowa was definitely a prairie state with less than 20 per cent of its area covered by timber. Such a distribution of vegetation, coupled with short time observations, has led to the general assumption that prairie is the climax vegetation of the state. The writers have recently (7) assembled evidence that the present climate of Iowa is capable of supporting a forest climax. Prairie is therefore a subclimax associes maintained by its early establishment and by the marginal nature of the climate, but particularly by a combination of soil factors favoring prairie over woodland. The establishment of our classification depends upon evidence that forest is not only able to survive in Iowa, but that it has been able to invade the prairie at an appreciable rate under undisturbed conditions. Additional evidence of the spread of forest in Iowa, both after and before settlement, is presented here.

Publication Date

1944

Journal Title

Proceedings of the Iowa Academy of Science

Volume

51

Issue

1

First Page

217

Last Page

224

Copyright

© Copyright 1944 by the Iowa Academy of Science, Inc.

Language

EN

File Format

application/pdf

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