Marine Environment Monitoring and Assessment National database (MERMAN)
CSEMP assessment of bd100 in biota at Dogger Central
Statistical analysis
Details
Media : Biota (Common dab liver)
Station : HumWash_HWOpenSeaNE_fi04 (Dogger Central)
Determinand : BD100
Units : μg kg-1 wet weight
Data extraction : 20 July 2018
Trend assessment
Analysis of variance
| Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) | |
|---|---|---|---|---|---|---|---|---|
| mean | 1 | 59.67 | 62.67 | -26.83 | 53.67 | |||
| linear | 2 | 59.88 | 66.28 | -25.94 | 51.88 | 1.792 | 1 | 0.1807 |
| smooth (df = 2) | 3 | 60.88 | 73.38 | -25.44 | 50.88 | 0.993 | 1 | 0.3190 |
Change in log concentration
| Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) | |
|---|---|---|---|---|---|---|---|---|
| overall | 2003 | 2015 | 0.3117 | -1.2333 | -1.5450 | 1.0979 | -1.407 | 0.2022 |
| last 20 years | 2003 | 2015 | 0.3117 | -1.2333 | -1.5450 | 1.0979 | -1.407 | 0.2022 |
Status assessment
| Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) | |
|---|---|---|---|---|---|---|
| FEQG | 0.2913 | 1.0000 | 1.2333 | 0.6908 | 1.785 | 0.0587 |
Raw data with supporting information
Raw data with assessment
Assessment plot
Organo-bromines data
Organo-bromines assessment
Related pages
- Clean Seas Environment Monitoring Programme (CSEMP) accessment viewer tool
- Assessment methodology for organo-bromines in biota
- Accessment criteria for organo-bromines in biota
