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 | -12.06 | -10.06 | 9.03 | -18.06 | | | |
| linear | 2 | -10.06 | -6.06 | 9.03 | -18.06 | 0.002 | 1 | 0.9618 |
| smooth (df = 2) | 3 | -12.24 | -5.10 | 11.12 | -22.24 | 4.174 | 1 | 0.0411 |
| smooth (df = 3) | 4 | -18.30 | -6.30 | 15.15 | -30.30 | 8.065 | 1 | 0.0045 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 1999 | 2015 | 10.184 | 10.199 | 0.01451 | 0.30188 | 0.048 | 0.9626 |
| last 20 years | 1999 | 2015 | 10.184 | 10.199 | 0.01451 | 0.30188 | 0.048 | 0.9626 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 26876 | 10269 | -0.9621 | 0.1861 | -5.169 | 0.9998 |
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
