CSEMP assessment of mercury in biota at Forth estuary @ Blackness
Statistical analysis
Trend assessment
Analysis of variance
| | Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) |
| mean | 1 | -14.50 | -13.00 | 10.25 | -20.50 | | | |
| linear | 2 | -13.29 | -10.38 | 10.64 | -21.29 | 0.786 | 1 | 0.3752 |
| smooth (df = 2) | 3 | -12.50 | -7.50 | 11.25 | -22.50 | 1.206 | 1 | 0.2722 |
| smooth (df = 3) | 4 | -15.19 | -7.19 | 13.60 | -27.19 | 4.696 | 1 | 0.0302 |
| smooth (df = 4) | 5 | -14.07 | -1.82 | 14.03 | -28.07 | 0.876 | 1 | 0.3492 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 1999 | 2014 | 3.936 | 3.800 | -0.13594 | 0.15282 | -0.890 | 0.3899 |
| last 20 years | 1999 | 2014 | 3.936 | 3.800 | -0.13594 | 0.15282 | -0.890 | 0.3899 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 44.7 | 14.7 | -1.1145 | 0.0910 | -12.253 | 1.0000 |
| EC | 44.7 | 500.0 | 2.4143 | 0.0910 | 26.543 | <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
