CSEMP assessment of cadmium in biota at Wytch (Poole Harbour)
Statistical analysis
Trend assessment
Analysis of variance
| | Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) |
| mean | 1 | 52.64 | 55.64 | -23.32 | 46.64 | | | |
| linear | 2 | 54.61 | 61.01 | -23.31 | 46.61 | 0.030 | 1 | 0.8628 |
| smooth (df = 2) | 3 | 56.61 | 69.11 | -23.30 | 46.61 | 0.005 | 1 | 0.9456 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2000 | 2012 | 3.0509 | 2.9996 | -0.05132 | 0.29447 | -0.174 | 0.8666 |
| last 20 years | 2000 | 2012 | 3.0509 | 2.9996 | -0.05132 | 0.29447 | -0.174 | 0.8666 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 20.1 | 26.0 | 0.258 | 0.195 | 1.325 | 0.1133 |
| EC | 20.1 | 1000.0 | 3.908 | 0.195 | 20.038 | <0.0001 |
Raw data with supporting information
Raw data with assessment
Assessment plot
Metals data
Metals assessment
Related pages
- Clean Seas Environment Monitoring Programme (CSEMP) accessment viewer tool
- Assessment methodology for metals in biota
- Accessment criteria for metals in biota
