CSEMP assessment of mercury in biota at Camarthen Bay
Statistical analysis
Trend assessment
Analysis of variance
| | Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) |
| mean | 1 | 44.06 | 46.63 | -19.03 | 38.06 | | | |
| linear | 2 | 43.28 | 48.61 | -17.64 | 35.28 | 2.775 | 1 | 0.0958 |
| smooth (df = 2) | 3 | 43.41 | 53.41 | -16.70 | 33.41 | 1.875 | 1 | 0.1709 |
| smooth (df = 3) | 4 | 45.03 | 63.03 | -16.52 | 33.03 | 0.372 | 1 | 0.5420 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2003 | 2016 | 3.916 | 4.395 | 0.4784 | 0.2674 | 1.789 | 0.1114 |
| last 20 years | 2003 | 2016 | 3.916 | 4.395 | 0.4784 | 0.2674 | 1.789 | 0.1114 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 81 | 35 | -0.8393 | 0.1720 | -4.879 | 0.9994 |
| EC | 81 | 500 | 1.8200 | 0.1720 | 10.580 | <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
