CSEMP assessment of mercury 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 | -16.89 | -15.25 | 11.44 | -22.89 | | | |
| linear | 2 | -15.05 | -11.85 | 11.53 | -23.05 | 0.165 | 1 | 0.6845 |
| smooth (df = 2) | 3 | -25.71 | -20.15 | 17.85 | -35.71 | 12.653 | 1 | 0.0004 |
| smooth (df = 3) | 4 | -23.71 | -14.71 | 17.85 | -35.71 | 0.000 | 1 | 0.9842 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 1999 | 2018 | 3.179 | 3.191 | 0.01135 | 0.17898 | 0.063 | 0.9506 |
| last 20 years | 1999 | 2018 | 3.179 | 3.191 | 0.01135 | 0.17898 | 0.063 | 0.9506 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 24.3 | 14.7 | -0.5047 | 0.1491 | -3.385 | 0.9970 |
| EC | 24.3 | 500.0 | 3.0241 | 0.1491 | 20.281 | <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
