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Page Title:
Table 4. Responses of E. fetida After 28-day Incubation1 |
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 ERDC TN-DOER-R3
September 2004
Table 4
Responses of E. fetida After 28-day Incubation1
Dredged Material Mixture
Worm Characteristic
Reference
10% IHC
20% IHC
33% IHC
70% IHC
-2
Biomass (g DW m )
-1
Biomass (g DW cyl )
1.56+0.07A
1.35+0.01AB
1.20+0.01BC
0.81+0.01C
0.05+0.01D
-1
No individuals (N cyl )
19.6+0.1A
19.4+0.8A
19.4+0.8A
17.6+0.8A
1.6+0.8B
Lipids (% DW)
10.26+1.49
9.71+0.34
10.78+1.65
12.12+2.82
32.19
-1
Organics (mg kg DW)
Arochlor-1248
0A
33.27+1.25B
45.26+4.94B
44.90+19.68B
212.19C
Total-PAHs
0.34+0.50A
38.55+3.38AB
63.47+9.75BC
85.30+39.48C
449.76D
-1
Metals (mg kg DW)
5.63+0.56
4.74+1.82
3.84+1.82
3.24+0.35
ND
Cadmium
7.28+1.76
3.78+2.97
5.68+4.21
1.67+1.44
ND
1.66+0.07
4.39+1.40
3.01+2.41
2.84+2.46
ND
Copper
12.65+0.21
15.25+1.20
16.8+0.14
16.65+5.02
ND
Lead
1.11+0.43
6.59+1.39
4.74+3.59
5.33+3.73
ND
Nickel
2.61+0.57
3.55+1.33
3.53+0.44
2.79+0.42
ND
Zinc
82.4+3.0
113.5+3.5
108.0+5.7
108.7+23.1
ND
1
Mean values and standard deviations (biomass N=5, organics N=3; metals N=2). Different letters indicate statistically significant
differences between means at the 95 percent confidence level, according to Fisher's least significant difference procedure.
Abbreviation: IHC, Indiana Harbor Canal; ND, not determined.
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