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 | -13.17 | -11.37 | 9.59 | -19.17 | | | |
| linear | 2 | -14.74 | -11.18 | 11.37 | -22.74 | 3.563 | 1 | 0.0591 |
| smooth (df = 2) | 3 | -18.86 | -12.61 | 14.43 | -28.86 | 6.123 | 1 | 0.0133 |
| smooth (df = 3) | 4 | -18.98 | -8.70 | 15.49 | -30.98 | 2.124 | 1 | 0.1450 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 1999 | 2015 | 3.195 | 3.621 | 0.4259 | 0.1733 | 2.457 | 0.0338 |
| last 20 years | 1999 | 2015 | 3.195 | 3.621 | 0.4259 | 0.1733 | 2.457 | 0.0338 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 37.4 | 14.7 | -0.9355 | 0.1364 | -6.857 | 1.0000 |
| EC | 37.4 | 500.0 | 2.5933 | 0.1364 | 19.006 | <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
