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Figures

Figure 1
Black River and Sample Stations
(1997-1998) as River Miles (RM)

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 Figure 2
Survival of Hyalella azteca in
Laboratory Sediment Toxicity Tests, Black River, Fall 1997

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Figure 3
Growth of Hyalella azteca in
Laboratory Sediment Toxicity Tests, Black River, Fall 1997

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Figure 4
Survival of Chironomus tentans in Laboratory Sediment Toxicity Tests
Black River, Fall 1997

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Figure 5
Growth of Chironomus tentans in Laboratory Sediment Toxicity Tests
Black River, Fall 1997

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Figure 6
Survival of Hyalella azteca in 48 hr In situ Exposures, Black River, Fall 1997

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Figure 7
Survival of Chironomus tentans
in 48 hr In situ Exposures, Black River, Fall 1997

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Figure 8
Survival of Pimephales promelas in 48 hr
In situ Exposures, Black River, Fall 1997

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Figure 9
Survival of Ceriodaphnia dubia in 48 hr
In situ Exposures, Black River, Fall 1997

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Figure 10
Relationship between Genetic Similarity in the
Snail, Physella gyrina and Fish Communities
(Index of Biotic Integrity), Black River, Fall 1997.
IBI values from Ohio EPA (1994).
Genetic similarity is mean of 24 pairwise comparisons.

 

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Figure 11
Survival of Hyalella azteca in 48 hr
In situ Exposures, Black River, June 1998

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Figure 12
Survival of Chironomus tentans in 48 hr
In situ Exposures, Black River, June 1998

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Figure 13
Survival of pimephales promelas in
48 hr In situ Exposures, Black River, June 1997

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Figure 14
Survival of Ceriodaphnia dubia in 48 hr
In situ Exposures, Black River, June 1998