Organochlorine residues in young herons from the upper Mississippi River-1976
Pesticides Monitoring Journal
By: H. M. Ohlendorf, J. B. Elder, Rey C. Stendell, Gary L. Hensler, and R.W. Johnson
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Abstract
Chicks of great blue herons (Ardea herodias) from four heronaries located near South St. Paul, Royalton, and Wabasha, Minnesota, and La Crosse, Wisconsin, were analyzed for organochlorines, Highest mean wet-weight concentrations, 6.43 ppm PCBs. 1.31 ppm DDE, and 1.90 ppm sigma DDT, were found in the South St. Paul chicks. Among chicks from the other three heronries, most levels were similar, but were significantly lower than levels in South St. Paul chicks. Lowest mean organochlorine levels, 0.37 ppm DDE, 0.38 ppm sigma DDT, and 0.22 ppm PCBs, were found in chicks from Royalton. All birds from South St. Paul and La Crosse contained residues of DDT and TDE whereas only one of the 10 birds from Royalton contained DDT and one contained TDE residues. Five of the 12 birds from Wabasha contained DDT; eight contained TDE. Except for PCB residues in La Crosse heron chicks, the rate of organochlorine residue accumulation in the birds was generally less than the rate of dilution caused by growth.
Suggested Citation
Ohlendorf, H.M., Elder, J., Stendell, R., Hensler, G.L., Johnson, R., 1979, Organochlorine residues in young herons from the upper Mississippi River-1976: Pesticides Monitoring Journal, v. 13, no. 3, p. 115-119.
ISSN: 0031-615 (online)
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Organochlorine residues in young herons from the upper Mississippi River-1976 |
| Series title | Pesticides Monitoring Journal |
| Volume | 13 |
| Issue | 3 |
| Year Published | 1979 |
| Language | English |
| Contributing office(s) | Patuxent Wildlife Research Center |
| Description | 115-119 |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Pesticides Monitoring Journal |
| First page | 115 |
| Last page | 119 |