CSEMP assessment of copper in sediment at Fladen Ground
Statistical analysis
Trend assessment
Analysis of variance
Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) | |
---|---|---|---|---|---|---|---|---|
mean | 1 | 1.21 | 4.81 | 2.39 | -4.79 | |||
linear | 2 | 3.02 | 11.02 | 2.49 | -4.98 | 0.190 | 1 | 0.6633 |
smooth (df = 2) | 3 | 4.22 | 20.88 | 2.89 | -5.78 | 0.807 | 1 | 0.3690 |
Change in log concentration
Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) | |
---|---|---|---|---|---|---|---|---|
overall | 2006 | 2013 | 2.4055 | 2.4589 | 0.05340 | 0.12198 | 0.438 | 0.6769 |
last 20 years | 2006 | 2013 | 2.4055 | 2.4589 | 0.05340 | 0.12198 | 0.438 | 0.6769 |
Status assessment
Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) | |
---|---|---|---|---|---|---|
BAC | 11.69 | 27.00 | 0.8369 | 0.0826 | 10.128 | <0.0001 |
ERL | 11.69 | 34.00 | 1.0675 | 0.0826 | 12.918 | <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 sediment
- Accessment criteria for metals in sediment
Media : Sediment (unsieved)
Station : Fladen_FlaOpenSea_se04 (Fladen Ground)
Determinand : Copper
Units : mg kg -1 dry weight normalised to 5% aluminium
Data extraction : 30 April 2020
Station : Fladen_FlaOpenSea_se04 (Fladen Ground)
Determinand : Copper
Units : mg kg -1 dry weight normalised to 5% aluminium
Data extraction : 30 April 2020