CSEMP assessment of copper 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 | 19.54 | 28.54 | -6.77 | 13.54 | |||
linear | 2 | 19.42 | 51.42 | -5.71 | 11.42 | 2.117 | 1 | 0.1457 |
Change in log concentration
Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) | |
---|---|---|---|---|---|---|---|---|
overall | 2012 | 2018 | 7.294 | 6.893 | -0.4008 | 0.2658 | -1.508 | 0.2287 |
last 20 years | 2012 | 2018 | 7.294 | 6.893 | -0.4008 | 0.2658 | -1.508 | 0.2287 |
Status assessment
Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) | |
---|---|---|---|---|---|---|
BAC | 985.6 | 978.0 | -0.00776 | 0.18348 | -0.042 | 0.5155 |
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
Media : Biota (Blue mussel soft body)
Station : IrishSea_Conwy_sh02, Conwy Sands (Conwy Bay)
Determinand : Copper
Units : μg kg-1 wet weight
Data extraction : 30 April 2020
Station : IrishSea_Conwy_sh02, Conwy Sands (Conwy Bay)
Determinand : Copper
Units : μg kg-1 wet weight
Data extraction : 30 April 2020