CSEMP assessment of cadmium in biota at Conwy Sands (Conwy Bay)
Statistical analysis
Trend assessment
Analysis of variance
| | Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) |
| mean | 1 | -11.00 | -2.00 | 8.50 | -17.00 | | | |
| linear | 2 | -12.76 | 19.24 | 10.38 | -20.76 | 3.766 | 1 | 0.0523 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2012 | 2018 | 4.956 | 4.669 | -0.28632 | 0.12022 | -2.382 | 0.0975 |
| last 20 years | 2012 | 2018 | 4.956 | 4.669 | -0.28632 | 0.12022 | -2.382 | 0.0975 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 106.6 | 156.5 | 0.3836 | 0.0827 | 4.640 | 0.0094 |
| EC | 106.6 | 1000.0 | 2.2385 | 0.0827 | 27.077 | <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
