CSEMP assessment of cadmium in sediment at Bann Estuary
Statistical analysis
Trend assessment
Analysis of variance
| | Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) |
| mean | 1 | 31.72 | 34.29 | -12.86 | 25.72 | | | |
| linear | 2 | 32.58 | 37.91 | -12.29 | 24.58 | 1.144 | 1 | 0.2848 |
| smooth (df = 2) | 3 | 33.11 | 43.11 | -11.55 | 23.11 | 1.469 | 1 | 0.2255 |
| smooth (df = 3) | 4 | 34.99 | 52.99 | -11.49 | 22.99 | 0.123 | 1 | 0.7260 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2006 | 2018 | -1.6167 | -1.9988 | -0.3821 | 0.3476 | -1.099 | 0.3036 |
| last 20 years | 2006 | 2018 | -1.6167 | -1.9988 | -0.3821 | 0.3476 | -1.099 | 0.3036 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 0.1355 | 0.3100 | 0.8276 | 0.2064 | 4.009 | 0.0020 |
| ERL | 0.1355 | 1.2000 | 2.1811 | 0.2064 | 10.565 | <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 sediment
- Accessment criteria for metals in sediment
