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 | 30.58 | 32.58 | -12.29 | 24.58 | | | |
| linear | 2 | 32.21 | 36.21 | -12.10 | 24.21 | 0.368 | 1 | 0.5442 |
| smooth (df = 2) | 3 | 31.87 | 39.02 | -10.94 | 21.87 | 2.334 | 1 | 0.1266 |
| smooth (df = 3) | 4 | 33.25 | 45.25 | -10.62 | 21.25 | 0.628 | 1 | 0.4283 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 1999 | 2015 | 5.488 | 5.800 | 0.3114 | 0.5101 | 0.610 | 0.5552 |
| last 20 years | 1999 | 2015 | 5.488 | 5.800 | 0.3114 | 0.5101 | 0.610 | 0.5552 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 330.2 | 156.5 | -0.7467 | 0.3138 | -2.379 | 0.9807 |
| EC | 330.2 | 1000.0 | 1.1082 | 0.3138 | 3.531 | 0.0027 |
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
