CSEMP assessment of cadmium in sediment at North Minch
Statistical analysis
Trend assessment
Analysis of variance
| | Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) |
| mean | 1 | 84.45 | 87.45 | -39.23 | 78.45 | | | |
| linear | 2 | 85.06 | 91.46 | -38.53 | 77.06 | 1.388 | 1 | 0.2387 |
| smooth (df = 2) | 3 | 85.28 | 97.78 | -37.64 | 75.28 | 1.785 | 1 | 0.1815 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2007 | 2016 | -2.6562 | -2.2390 | 0.4172 | 0.3527 | 1.183 | 0.2755 |
| last 20 years | 2007 | 2016 | -2.6562 | -2.2390 | 0.4172 | 0.3527 | 1.183 | 0.2755 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 0.1066 | 0.3100 | 1.0678 | 0.1900 | 5.620 | 0.0004 |
| ERL | 0.1066 | 1.2000 | 2.4213 | 0.1900 | 12.744 | <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
