CSEMP assessment of cadmium in biota at Crosby (Mersey Channel)
Statistical analysis
Trend assessment
Analysis of variance
Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) | |
---|---|---|---|---|---|---|---|---|
mean | 1 | -25.20 | -23.20 | 15.60 | -31.20 | |||
linear | 2 | -23.56 | -19.56 | 15.78 | -31.56 | 0.356 | 1 | 0.5507 |
smooth (df = 2) | 3 | -25.14 | -18.00 | 17.57 | -35.14 | 3.584 | 1 | 0.0583 |
smooth (df = 3) | 4 | -26.91 | -14.91 | 19.46 | -38.91 | 3.771 | 1 | 0.0522 |
Change in log concentration
Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) | |
---|---|---|---|---|---|---|---|---|
overall | 2000 | 2018 | 6.144 | 6.025 | -0.11894 | 0.19849 | -0.599 | 0.5624 |
last 20 years | 2000 | 2018 | 6.144 | 6.025 | -0.11894 | 0.19849 | -0.599 | 0.5624 |
Status assessment
Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) | |
---|---|---|---|---|---|---|
BAC | 413.7 | 156.5 | -0.9722 | 0.1147 | -8.475 | 1.0000 |
EC | 413.7 | 1000.0 | 0.8826 | 0.1147 | 7.693 | <0.0001 |
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_LiverpoolBay_sh01, Crosby (Mersey Channel)
Determinand : Cadmium
Units : μg kg-1 wet weight
Data extraction : 30 April 2020
Station : IrishSea_LiverpoolBay_sh01, Crosby (Mersey Channel)
Determinand : Cadmium
Units : μg kg-1 wet weight
Data extraction : 30 April 2020