CSEMP assessment of nickel 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 | -30.02 | -28.63 | 18.01 | -36.02 | | | |
| linear | 2 | -40.39 | -37.73 | 24.20 | -48.39 | 12.376 | 1 | 0.0004 |
| smooth (df = 2) | 3 | -57.01 | -52.46 | 33.50 | -67.01 | 18.613 | 1 | <0.0001 |
| smooth (df = 3) | 4 | -57.40 | -50.20 | 34.70 | -69.40 | 2.399 | 1 | 0.1214 |
| smooth (df = 4) | 5 | -55.67 | -44.78 | 34.83 | -69.67 | 0.262 | 1 | 0.6089 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2000 | 2016 | 4.448 | 3.582 | -0.8656 | 0.1213 | -7.134 | <0.0001 |
| last 20 years | 2000 | 2016 | 4.448 | 3.582 | -0.8656 | 0.1213 | -7.134 | <0.0001 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 35.96 | 36.00 | 0.00109 | 0.10134 | 0.011 | 0.4958 |
Raw data with supporting information
__sdmn_ni_au.jpg "Raw data with supporting information for assessment of nickel in sediment at outer (Firth of Clyde)")
Raw data with assessment
__sdmn_ni_da.jpg "Raw data with assessment of nickel in sediment at outer (Firth of Clyde)")
Assessment plot
__sdmn_ni_as.jpg "Assessment plot for nickel in sediment at outer (Firth of Clyde)")
Metals data
__sdmn_mtlsda.jpg "Metals data for assessment of nickel in sediment at outer (Firth of Clyde)")
Metals assessment
__sdmn_mtlsas.jpg "Metals assessment of nickel 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
