TABLE 28

CESIUM ACCUMULATION IN GREAT LAKES BIOTA - PART I
137 Cs IN GREAT LAKES FISHES
(adapted from International Joint Commission and other agency reports)

Year Species Location Average 137 Cs Activity
(Bq/kg)
Bioaccumulation
Factor
Lake Huron
1981
1981
1982
 
Walleye
Sturgeon
Lake trout
 
Blind River
Blind River
North Channel
 
9.78 0.42 (6)
3.36 0.25 (4)
8.22 0.17 (3)
Lake Erie
1982
 
Walleye
 
Western Basin
 
0.862 0.085 (3)
 
1556
Lake Ontario
1976
1977
1978
1980
1981
1982
1982
1982
1982
 
Rainbow trout    
Rainbow trout
Rainbow trout
Rainbow trout
Rainbow trout
Rainbow trout
Lake trout
Lake trout
Lake trout
 
Ganaraska River
Ganaraska River
Ganaraska River
Ganaraska River
Ganaraska River
Coburg
Coburg
Niagara on the Lake
Oswego
 
2.4
2.0
2.2
2.7
1.40 0.13 (9)
1.5 0.1
1.5 0.1 (3)
1.60 0.12 (4)
1.60 0.4 (2)

 
3528
2391
2354  

1700
1414
1425
1490

Notes :    (1) References: International Joint Commission (1983, 1987 b ); Joshi (1984, 1985, 1986, 1987, 1988 a , 1988 b ).
    (2) Numbers in parentheses are number of fishes used in the averaging. If no number appears in parentheses, then either only one measurement was reported, or the source of the data did not qualify the information in some manner.
    (3) Data are from Environment Canada and New York State Department of Health.
    (4) Radioactive measurements made on wet weight basis.
    (5) Bioaccumulation factors from Joshi (1984). Bioaccumulation factors relate to open water levels or ambient levels at collection site, depending on the available data.

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