| Home | About Our Site | Introductory Risk Assessment | Advanced Risk Assessment | Search | Contact Us |

New Zealand ecotoxicity data for aquatic invertebrates

Ecotoxicity testing protocols 

Ecotoxicity results

Soil micro-organisms

Soil invertebrates

Plants

Freshwater invertebrates

Freshwater fish

Contaminant mobility

Soil property data

Models

Toxicity databases

RA methodologies

Document resources

 

Problem Identification

Receptor Characterisation

Exposure Assessment

Toxicity Assessment

Risk Characterisation

Liability and use of this information - Please read

Copper

Species

Toxicant

Test concs
 (m g L-1)

Test Duration & End point

NOECd

m g L-1

LOECd

m g L-1

Toxicity Value

(LC50 or EC50) f

Total Hardness

mg L-1 CaCO3

Cladocera

C. dubia

Cu(II)

{18, 32, 56, 100, 180}a

48h survival

<18.0

18.0

24.0(28.0-21.0)

59.4

Cu(II)

{5.6, 10, 18, 32, 56}a

7d (minimum) survival

10.0

18

20.0(24.0-17.0

59.4

7d (minimum) reproduction

<5.6

5.6

22.2(24.1-18.5)

59.4

Amphipod

P. fluviatilis

Cu(II)

{10, 18, 32, 56, 100}a

48h survival

18.0

32.0

61.0(72.0-62.0)

39.2

Cu(II)

{18, 32, 56, 100}a

32d survival

<5.6

5.6

4.0(2.0-6.0)

39.2

32d reproduction

<5.6

5.6

9.0**

39.2

a Nominal concentrations.

d NOEC and LOEC were calculated using one-way analysis of variance (ANOVA), and appropriate USEPA approved hypothesis testing at a significance level of p < 0.05.

f LC50 and EC50 values were derived from either Probit analysis, trimmed Spearman-Karber or Linear Interpolation. 95% confidence intervals are given in parentheses.

** EC50 toxicity curve was incomplete, no confidence intervals were able to be calculated.

Chromium VI

Species

Toxicant

Test concs 
(m g L-1)

Test Duration & End point

NOEC d

m g L-1

LOEC d

m g L-1

Toxicity Valuef

(LC50 or EC50)

Cladocera

C. dubia

Cr(VI)

{10, 18, 32, 56, 100}a

48h survival

32

56

41.0(47.0-36.0)

Cr(VI)

{1.8, 3.2, 5.6, 10, 18}a

7d min survival

18.0

>18.0

>18.0

7d min reproduction

5.6

10.0

9.3**

Amphipod

P. fluviatilis

 

 

Cr(VI)

{10, 18, 32, 56, 18}a

48h survival 56.0 100.0 >100

Cr(VI)

{18, 32, 56, 18}a

32d survival <18.0 18.0 9.0**
32 reproduction <18.0 18.0 9.0**

a Nominal concentrations.

d NOEC and LOEC were calculated using one-way analysis of variance (ANOVA), and appropriate USEPA approved hypothesis testing at a significance level of p < 0.05.

f LC50 and EC50 values were derived from either Probit analysis, trimmed Spearman-Karber or Linear Interpolation. 95% confidence intervals are given in parentheses.

** EC50 toxicity curve was incomplete, no confidence intervals were able to be calculated.

Arsenic V

Species

Toxicant

Test concs   
(m g L-1)

Test Duration & End point

NOEC d

m g L-1

LOEC d

m g L-1

Toxicity Valuef

(LC50 or EC50)

Cladocera

C. dubia

As(V)

{180, 320, 560, 1800, 3200}a

48h survival

560

1800

1930(2610-1420)

As(V)

{56, 100, 180, 320, 560}a

7d (minimum) survival

560

>560

>560

7d min reproduction

320

560

491**

Amphipod

P. fluviatilis

 

As(V)

{1800 18000}a

48h survival

1800

3200

8900(10700-7600)

As(V)

{560 5600}a

32d survival

<560

560

481(582-293)

32d reproduction

560

1000

232(724-0)

a Nominal concentrations.

d NOEC and LOEC were calculated using one-way analysis of variance (ANOVA), and appropriate USEPA approved hypothesis testing at a significance level of p < 0.05.

f LC50 and EC50 values were derived from either Probit analysis, trimmed Spearman-Karber or Linear Interpolation. 95% confidence intervals are given in parentheses.

** EC50 toxicity curve was incomplete, no confidence intervals were able to be calculated.

Copyright

This WWW site and its contents are copyright to the project participants and may be copied for personal, non-profit or educational purposes provided that the source is acknowledged. The information must not be used for resource management or any commercial purposes without prior written consent from the relevant project participants organisations.

| Home | About Our Site | Introductory Risk Assessment | Advanced Risk Assessment | Search | Contact Us | Disclaimer

Page last updated: 01 May 2007

Copyright 1998 - 2003 Project Participants & their Organisations