CSEMP assessment of copper in biota at Roa Island (Morecambe Bay)
Statistical analysis
Trend assessment
Analysis of variance
| | Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) |
| mean | 1 | 10.07 | 12.07 | -2.04 | 4.07 | | | |
| linear | 2 | 11.41 | 15.41 | -1.71 | 3.41 | 0.662 | 1 | 0.4159 |
| smooth (df = 2) | 3 | 12.03 | 19.18 | -1.02 | 2.03 | 1.378 | 1 | 0.2404 |
| smooth (df = 3) | 4 | 13.75 | 25.75 | -0.88 | 1.75 | 0.283 | 1 | 0.5949 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2000 | 2015 | 7.046 | 7.296 | 0.25012 | 0.30290 | 0.826 | 0.4282 |
| last 20 years | 2000 | 2015 | 7.046 | 7.296 | 0.25012 | 0.30290 | 0.826 | 0.4282 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 1474.5 | 978.0 | -0.4105 | 0.1991 | -2.062 | 0.9669 |
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
