CSEMP assessment of copper in sediment at Forth Estuary
Statistical analysis
Trend assessment
Analysis of variance
| | Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) |
| mean | 1 | 91.45 | 92.65 | -42.73 | 85.45 | | | |
| linear | 2 | 91.94 | 94.23 | -41.97 | 83.94 | 1.509 | 1 | 0.2193 |
| smooth (df = 2) | 3 | 93.84 | 97.68 | -41.92 | 83.84 | 0.107 | 1 | 0.7432 |
| smooth (df = 3) | 4 | 95.23 | 101.23 | -41.61 | 83.23 | 0.610 | 1 | 0.4348 |
| smooth (df = 4) | 5 | 96.80 | 105.71 | -41.40 | 82.80 | 0.430 | 1 | 0.5119 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2000 | 2017 | 3.899 | 3.356 | -0.5438 | 0.4332 | -1.255 | 0.2274 |
| last 20 years | 2000 | 2017 | 3.899 | 3.356 | -0.5438 | 0.4332 | -1.255 | 0.2274 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 28.66 | 27.00 | -0.05967 | 0.25540 | -0.234 | 0.5909 |
| ERL | 28.66 | 34.00 | 0.17086 | 0.25540 | 0.669 | 0.2565 |
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
