CSEMP assessment of zinc in biota at Mostyn Bank (Dee)
Statistical analysis
Trend assessment
Analysis of variance
| | Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) |
| mean | 1 | -16.12 | -14.32 | 11.06 | -22.12 | | | |
| linear | 2 | -14.33 | -10.78 | 11.17 | -22.33 | 0.211 | 1 | 0.6463 |
| smooth (df = 2) | 3 | -16.52 | -10.27 | 13.26 | -26.52 | 4.189 | 1 | 0.0407 |
| smooth (df = 3) | 4 | -20.91 | -10.63 | 16.46 | -32.91 | 6.389 | 1 | 0.0115 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 1999 | 2018 | 10.228 | 10.088 | -0.13934 | 0.30248 | -0.461 | 0.6540 |
| last 20 years | 1999 | 2018 | 10.228 | 10.088 | -0.13934 | 0.30248 | -0.461 | 0.6540 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 24058 | 10269 | -0.8513 | 0.1913 | -4.451 | 0.9995 |
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
