Marine Environment Monitoring and Assessment National database (MERMAN)
CSEMP assessment of bd154 in biota at Burbo Light (Liverpool Bay)
Statistical analysis
Details
Media : Biota (Common dab liver)
Station : IrishSea_IrSOpenSea_fi04, Burbo Light (Liverpool Bay)
Determinand : BD154
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 | 43.36 | 52.36 | -18.68 | 37.36 | |||
| linear | 2 | 43.05 | 75.05 | -17.53 | 35.05 | 2.307 | 1 | 0.1288 |
Change in log concentration
| Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) | |
|---|---|---|---|---|---|---|---|---|
| overall | 2005 | 2016 | 0.7949 | -0.1151 | -0.9101 | 0.5418 | -1.680 | 0.1916 |
| last 20 years | 2005 | 2016 | 0.7949 | -0.1151 | -0.9101 | 0.5418 | -1.680 | 0.1916 |
Status assessment
| Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) | |
|---|---|---|---|---|---|---|
| FEQG | 0.891 | 4.000 | 1.5014 | 0.3724 | 4.032 | 0.0137 |
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
