| Abstract: | Total and dissolved phosphorus, nitrate, and chlorophyll a were measured at four stations in northern Lake Michigan (inshore Michigan, offshore Michigan, offshore Wisconsin, and inshore Wisconsin) and one station in southern Green Bay during 16 sampling periods in 1965. The nutrients were measured at depths of 2, 5, and 10 meters and chlorophyll a at 2 meters. In Green Bay total phosphorus (33.7 ppb) was about five times as high and dissolved phosphorus (7.0 ppb) more than twice as high as the averages for the four Lake Michigan stations, but nitrate nitrogen concentration (37.3 ppb) was only about onethird that in the lake. Total and dissolved phosphorus were about 50 percent higher in the inshore Michigan area than in the other three lake areas. Concentration and seasonal trends in nitrates differed relatively little among the four lake stations. Nitrate at all areas and depths sampled decreased to almost nondetectable levels during September. Chlorophyll a was 70 percent higher at the two inshore areas than at the two offshore areas in the lake and was more than four times higher in Green Bay than at any lake area. |
| Genre: | Federal Government Series |
| ProdID: | 37601 |
| Citation Author: | Allen, Herbert Ellis |
| Citation Contributing Office: | Great Lakes Science Center |
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| Citation Language: | ENGLISH |
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| Citation Number Of Pages: | 23 |
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| Citation Phsyical Description: | 23 p. : ill., map ; 26 cm. |
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| Citation Public Comments: | Out-of-print |
| Citation Publisher: | U.S. Fish and Wildlife Service |
| Citation Series: | Technical Paper |
| Citation Series Code: | TP |
| Citation Series Number: | 70 |
| Citation Search Results Text: | Seasonal variation of nitrogen, phosphorus, and chlorophyll a in Lake Michigan and Green Bay, 1965; 1973; Federal Government Series; TP; 70; Allen, Herbert Ellis |
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| Citation Year: | 1973 |
| Type: | citation/reference |
| Text: | Seasonal variation of nitrogen, phosphorus, and chlorophyll a in Lake Michigan and Green Bay, 1965; 1973; Federal Government Series; TP; 70; Allen, Herbert Ellis |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Sat, 1 Jan 1994 00:00 -0600 |
| Publisher: | U.S. Fish and Wildlife Service |
