TABLE IV
Concentration of Organochlorine Insecticides in Aquutic Ecosystems
Residues (ppm)
Site
Reference
Pesticides
Notes
Birds
Birds
Mammals
Water Mud Plants InverteFish
feeding on feeding
feeding
brates
inverteon fish
on fish
brates
Clear Lake,
Huntand
TDE
0.02
5.3*
1.0-196.0
723.0
Lake sprayed
California, U.S.A. Bischoff, 1960
-1600.0
intentionally.
in fat
* =Plankton
Tule Lake,
J. 0. Keith,
Total
0.0006 1.5
1.0
0.4
2.5
California, U.S.A. 1966
organochlorine
Lower Klamath,
J. 0. Keith,
Total
0.0005 0.9
1.1
2.5
1.5
California, U.S.A.
1966
organochlorine
1.3-42.8
4.0-57.2
McNary,
J. 0. Keith,
Total
0.0004 0.4
0.8
5.2
3.3
California, U.S.A.
1966
organochlorine
Deer Flat,
J. 0. Keith,
Total
0.0003 40.0
30.3
0.5
California, U.S.A.
1966
organochlorine
Lake Michigan,
Hickey et ul.
DDT and TDE
0.014
0.41
3.355.6
6.0-98.8
Wisconsin, U.S.A. 1966
South-East
Moore, 1965b Total
England
organochlorine
Trace ND-0.2 ND-15.1 < 1.0-58.4 1.8-209.7
ND- Herbivorous
( ( 0 . 0 5 )
1.6
birds
Trace- 1.6