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