CSEMP assessment of lead in biota at West Lundy
Statistical analysis
Trend assessment
Analysis of variance
Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) | |
---|---|---|---|---|---|---|---|---|
mean | 1 | 27.35 | 36.35 | -10.68 | 21.35 | |||
linear | 2 | 19.88 | 51.88 | -5.94 | 11.88 | 9.479 | 1 | 0.0021 |
Change in log concentration
Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) | |
---|---|---|---|---|---|---|---|---|
overall | 2005 | 2018 | 6.447 | 5.345 | -1.1012 | 0.1990 | -5.535 | 0.0116 |
last 20 years | 2005 | 2018 | 6.447 | 5.345 | -1.1012 | 0.1990 | -5.535 | 0.0116 |
Status assessment
Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) | |
---|---|---|---|---|---|---|
BAC | 209.7 | 26.0 | -2.0874 | 0.1229 | -16.984 | 0.9998 |
EC | 209.7 | 1500.0 | 1.9677 | 0.1229 | 16.010 | 0.0003 |
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 liver)
Station : Severn_SeOpenSeaE_fi01 (West Lundy)
Determinand : Lead
Units : μg kg-1 wet weight
Data extraction : 30 April 2020
Station : Severn_SeOpenSeaE_fi01 (West Lundy)
Determinand : Lead
Units : μg kg-1 wet weight
Data extraction : 30 April 2020