CSEMP assessment of BDE99 in biota at Tees Bay
Statistical analysis
Trend assessment
Analysis of variance
Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) | |
---|---|---|---|---|---|---|---|---|
mean | 1 | 58.05 | 62.55 | -26.02 | 52.05 | |||
linear | 2 | 38.49 | 49.15 | -15.24 | 30.49 | 21.560 | 1 | <0.0001 |
smooth (df = 2) | 3 | 40.48 | 65.48 | -15.24 | 30.48 | 0.005 | 1 | 0.9417 |
Change in log concentration
Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) | |
---|---|---|---|---|---|---|---|---|
overall | 2005 | 2017 | -0.838 | -3.222 | -2.3837 | 0.2405 | -9.911 | 0.0002 |
last 20 years | 2005 | 2017 | -0.838 | -3.222 | -2.3837 | 0.2405 | -9.911 | 0.0002 |
Status assessment
Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) | |
---|---|---|---|---|---|---|
BAC | 0.0399 | 0.0120 | -1.201 | 0.156 | -7.717 | 0.9997 |
FEQG | 0.0399 | 1.0000 | 3.222 | 0.156 | 20.707 | <0.0001 |
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
Media : Biota (Common dab liver)
Station : TyneTees_TTInter_fi03 (Tees Bay)
Determinand : BDE99
Units : μg kg-1 wet weight
Data extraction : 30 April 2020
Station : TyneTees_TTInter_fi03 (Tees Bay)
Determinand : BDE99
Units : μg kg-1 wet weight
Data extraction : 30 April 2020