Marine Environment Monitoring and Assessment National database (MERMAN)
CSEMP assessment of bd100 in biota at North Dogger 1
Statistical analysis
Details
Media : Biota (Common dab liver)
Station : HumWash_HWOpenSeaNE_fi01 (North Dogger 1)
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 | 80.85 | 84.45 | -37.43 | 74.85 | |||
| linear | 2 | 78.37 | 86.37 | -35.18 | 70.37 | 4.484 | 1 | 0.0342 |
| smooth (df = 2) | 3 | 79.08 | 95.74 | -34.54 | 69.08 | 1.292 | 1 | 0.2557 |
Change in log concentration
| Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) | |
|---|---|---|---|---|---|---|---|---|
| overall | 2003 | 2011 | 0.4457 | -0.4670 | -0.9127 | 0.3884 | -2.350 | 0.0571 |
| last 20 years | 2003 | 2011 | 0.4457 | -0.4670 | -0.9127 | 0.3884 | -2.350 | 0.0571 |
Status assessment
| Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) | |
|---|---|---|---|---|---|---|
| FEQG | 0.6269 | 1.0000 | 0.4670 | 0.1937 | 2.411 | 0.0263 |
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
