CSEMP assessment of cadmium in biota at Mostyn Bank (Dee)
Statistical analysis
Trend assessment
Analysis of variance
| | Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) |
| mean | 1 | 31.74 | 33.54 | -12.87 | 25.74 | | | |
| linear | 2 | 33.62 | 37.18 | -12.81 | 25.62 | 0.119 | 1 | 0.7303 |
| smooth (df = 2) | 3 | 30.20 | 36.45 | -10.10 | 20.20 | 5.422 | 1 | 0.0199 |
| smooth (df = 3) | 4 | 32.16 | 42.44 | -10.08 | 20.16 | 0.043 | 1 | 0.8364 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 1999 | 2018 | 5.643 | 5.451 | -0.1921 | 0.5564 | -0.345 | 0.7364 |
| last 20 years | 1999 | 2018 | 5.643 | 5.451 | -0.1921 | 0.5564 | -0.345 | 0.7364 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 233.0 | 156.5 | -0.3981 | 0.3518 | -1.132 | 0.8591 |
| EC | 233.0 | 1000.0 | 1.4567 | 0.3518 | 4.141 | 0.0008 |
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
