CSEMP assessment of mercury in biota at Tees Bay
Statistical analysis
Trend assessment
Analysis of variance
Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) | |
---|---|---|---|---|---|---|---|---|
mean | 1 | 51.13 | 52.93 | -22.56 | 45.13 | |||
linear | 2 | 52.93 | 56.49 | -22.47 | 44.93 | 0.197 | 1 | 0.6572 |
smooth (df = 2) | 3 | 54.70 | 60.95 | -22.35 | 44.70 | 0.233 | 1 | 0.6294 |
smooth (df = 3) | 4 | 52.94 | 63.22 | -20.47 | 40.94 | 3.759 | 1 | 0.0525 |
Change in log concentration
Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) | |
---|---|---|---|---|---|---|---|---|
overall | 2001 | 2017 | 4.088 | 4.224 | 0.13555 | 0.30422 | 0.446 | 0.6646 |
last 20 years | 2001 | 2017 | 4.088 | 4.224 | 0.13555 | 0.30422 | 0.446 | 0.6646 |
Status assessment
Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) | |
---|---|---|---|---|---|---|
BAC | 68.3 | 35.0 | -0.6686 | 0.1945 | -3.437 | 0.9972 |
EC | 68.3 | 500.0 | 1.9906 | 0.1945 | 10.234 | <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 (Common dab muscle)
Station : TyneTees_TTInter_fi03 (Tees Bay)
Determinand : Mercury
Units : μg kg-1 wet weight
Data extraction : 30 April 2020
Station : TyneTees_TTInter_fi03 (Tees Bay)
Determinand : Mercury
Units : μg kg-1 wet weight
Data extraction : 30 April 2020