The chief purposes of this paper are: (1) to present a general picture of the plankton of Lake Michigan, (2) to determine the relative abundance of its constituent organisms, and (3) to incorporate and summarize the facts now known relating to the plankton of the Great Lakes. The data for the present paper were obtained from two series of collections made from Lake Michigan in 1887-1888 and 1926 1927. Fifty silk-net tows (Table I) were made by the Illinois State Laboratory of Natural History from November, 1887 to November, 1888 from the breakwater at Chicago. Quantitative silk-net and filter-paper collections (Table II) were made October 16-17, 1926 at Indiana State Dunes Park and Michigan City, Indiana, and near Sawyer, Michigan. Quantitative collections (Table III) were also made May 14 15, 1927 at Dunes Park and Gary, Indiana and July 10, 1927 at Chicago, Illinois. All of these were surface tows near the shore, so that the material in this paper relates only to surface and in-shore conditions. No investigation has been reported on the plankton or the conditions in the central area of the lake.
Publisher
Champaign : Illinois Natural History Survey
Series/Report Name or Number
Illinois Natural History Survey Bulletin; v. 017, no. 04
ISSN
0073-4918
Type of Resource
text
Language
en
Permalink
http://hdl.handle.net/2142/45911
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