Three reports on the biology of the sand areas of Illinois have appeared in earlier numbers of this Bulletin. The report of Hart and Gleason ('07) is a discussion of the plants and animals in the particular region in which the present studies were made; that of Gleason ('10) gives an account of the plant associations of the inland sand areas of the state; and that of Gates ('12) discusses the plant associations of the sand area of the Lake Michigan shore near the northern boundary of Illinois. The present study is restricted to the grassland associations of sand in the Illinois River valley, and the emphasis is placed upon the animals of the region. The unit of study is here the association, or community of organisms: the social aggregate of plants and animals, which, living in a common environment, come into various relations one with another. In the sand prairie of the river valley several types of areas may be distinguished, each characterized by a definite set of physical conditions, by a particular association of plants, and by a particular assemblage of animals. In this report the plant and animal assemblages are considered together, and inquiry is made into the relations which obtain between them, and between them and the physical environment.
Publisher
Champaign : Illinois Natural History Survey
Series/Report Name or Number
Illinois Natural History Survey Bulletin; v. 010, no. 01
ISSN
0073-4918
Type of Resource
text
Language
en
Permalink
http://hdl.handle.net/2142/46397
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