CSEMP assessment of BDE47 in biota at Camarthen Bay
Statistical analysis
Trend assessment
Analysis of variance
| Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) | |
|---|---|---|---|---|---|---|---|---|
| mean | 1 | 45.73 | 47.98 | -19.86 | 39.73 | |||
| linear | 2 | 39.16 | 43.73 | -15.58 | 31.16 | 8.564 | 1 | 0.0034 |
| smooth (df = 2) | 3 | 39.05 | 47.38 | -14.52 | 29.05 | 2.113 | 1 | 0.1461 |
| smooth (df = 3) | 4 | 41.00 | 55.40 | -14.50 | 29.00 | 0.050 | 1 | 0.8232 |
Change in log concentration
| Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) | |
|---|---|---|---|---|---|---|---|---|
| overall | 2003 | 2018 | 1.4059 | 0.0160 | -1.3899 | 0.3858 | -3.602 | 0.0057 |
| last 20 years | 2003 | 2018 | 1.4059 | 0.0160 | -1.3899 | 0.3858 | -3.602 | 0.0057 |
Status assessment
| Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) | |
|---|---|---|---|---|---|---|
| BAC | 1.02 | 0.01 | -4.439 | 0.239 | -18.552 | 1.0000 |
| FEQG | 1.02 | 44.00 | 3.768 | 0.239 | 15.749 | <0.0001 |
Related pages
- Clean Seas Environment Monitoring Programme (CSEMP) accessment viewer tool
- Assessment methodology for in biota
- Accessment criteria for in biota
Media : Biota (Common dab liver)
Station : Severn_SeInter_fi01 (Camarthen Bay)
Determinand : BDE47
Units : μg kg-1 wet weight
Data extraction : 30 April 2020
Station : Severn_SeInter_fi01 (Camarthen Bay)
Determinand : BDE47
Units : μg kg-1 wet weight
Data extraction : 30 April 2020