CSEMP assessment of copper in sediment at outer (Firth of Clyde)
Statistical analysis
Trend assessment
Analysis of variance
| | Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) |
| mean | 1 | 34.36 | 35.65 | -14.18 | 28.36 | | | |
| linear | 2 | 25.12 | 27.58 | -8.56 | 17.12 | 11.246 | 1 | 0.0008 |
| smooth (df = 2) | 3 | 15.04 | 19.20 | -2.52 | 5.04 | 12.078 | 1 | 0.0005 |
| smooth (df = 3) | 4 | 16.93 | 23.47 | -2.46 | 4.93 | 0.110 | 1 | 0.7403 |
| smooth (df = 4) | 5 | 16.90 | 26.70 | -1.45 | 2.90 | 2.023 | 1 | 0.1549 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2000 | 2017 | 3.880 | 2.893 | -0.9870 | 0.1815 | -5.439 | <0.0001 |
| last 20 years | 2000 | 2017 | 3.880 | 2.893 | -0.9870 | 0.1815 | -5.439 | <0.0001 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 18.05 | 27.00 | 0.4027 | 0.1483 | 2.714 | 0.0084 |
| ERL | 18.05 | 34.00 | 0.6332 | 0.1483 | 4.268 | 0.0004 |
Raw data with supporting information
__sdmn_cu_au.jpg "Raw data with supporting information for assessment of copper in sediment at outer (Firth of Clyde)")
Raw data with assessment
__sdmn_cu_da.jpg "Raw data with assessment of copper in sediment at outer (Firth of Clyde)")
Assessment plot
__sdmn_cu_as.jpg "Assessment plot for copper in sediment at outer (Firth of Clyde)")
Metals data
__sdmn_mtlsda.jpg "Metals data for assessment of copper in sediment at outer (Firth of Clyde)")
Metals assessment
__sdmn_mtlsas.jpg "Metals assessment of copper in sediment at outer (Firth of Clyde)")
Related pages
- Clean Seas Environment Monitoring Programme (CSEMP) accessment viewer tool
- Assessment methodology for metals in sediment
- Accessment criteria for metals in sediment
