Exploratory Studies of Collemholan Populations in lowa

Collembola, primitive insects of the subclass Apterygota, were studied in Iowa during the summer of 1968 as part of the National Science Foundation Undergraduate Research Participation Program at Iowa State University. Soil cores were taken from woodlands, grasslands, cultivated fields, pastures, fencerows, marshlands, and caves, and animals were extracted with a modified Tullgren apparatus. Sixty-five collembolan species were collected, three of which were believed to be new. The results of systematic sampling at Ledges State Park, Boone County, Iowa, indicated that strong qualitative and quantitative differences existed among several woodland sites and a prairie-like site