CSEMP assessment of 1-hydroxy pyrene equivalent 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 | 192.60 | 195.18 | -93.30 | 186.60 | |||
linear | 2 | 192.81 | 198.14 | -92.40 | 184.81 | 1.796 | 1 | 0.1801 |
smooth (df = 2) | 3 | 192.54 | 202.54 | -91.27 | 182.54 | 2.266 | 1 | 0.1322 |
smooth (df = 3) | 4 | 193.99 | 211.99 | -91.00 | 181.99 | 0.547 | 1 | 0.4594 |
Change in log concentration
Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) | |
---|---|---|---|---|---|---|---|---|
overall | 2004 | 2018 | -1.9664 | -1.6490 | 0.3174 | 0.2277 | 1.394 | 0.2009 |
last 20 years | 2004 | 2018 | -1.9664 | -1.6490 | 0.3174 | 0.2277 | 1.394 | 0.2009 |
Status assessment
Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) | |
---|---|---|---|---|---|---|
BAC | 0.192 | 0.150 | -0.248 | 0.141 | -1.754 | 0.9412 |
EAC | 0.192 | 22.000 | 4.740 | 0.141 | 33.509 | <0.0001 |
Raw data with supporting information
Raw data with assessment
Assessment plot
Biological effects data
Biological effects assessment
Related pages
- Clean Seas Environment Monitoring Programme (CSEMP) accessment viewer tool
- Assessment methodology for biological_effects in biota
- Accessment criteria for biological_effects in biota
Media : Biota (Common dab bile)
Station : Severn_SeInter_fi01 (Camarthen Bay)
Determinand : 1-hydroxy pyrene equivalent
Units : μg ml-1
Data extraction : 30 April 2020
Station : Severn_SeInter_fi01 (Camarthen Bay)
Determinand : 1-hydroxy pyrene equivalent
Units : μg ml-1
Data extraction : 30 April 2020