Marine Environment Monitoring and Assessment National database (MERMAN)
CSEMP assessment of mercury in biota at Dogger Central
Statistical analysis
Details
Media : Biota (Common dab muscle) Station : HumWash_HWOpenSeaNE_fi04 (Dogger Central) Determinand : Mercury 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
29.37
31.62
-11.69
23.37
linear
2
30.25
34.82
-11.12
22.25
1.125
1
0.2889
smooth (df = 2)
3
32.23
40.57
-11.12
22.23
0.013
1
0.9079
smooth (df = 3)
4
33.23
47.63
-10.62
21.23
0.999
1
0.3176
Change in log concentration
Year start
Year end
Fit start
Fit end
Change
Std error
t
Pr(>|t|)
overall
2001
2015
4.538
4.212
-0.3265
0.2989
-1.092
0.3031
last 20 years
2001
2015
4.538
4.212
-0.3265
0.2989
-1.092
0.3031
Status assessment
Conc fitted
Conc ref
Log ratio
Std error
t
Pr(>t)
BAC
67.5
35.0
-0.6565
0.1973
-3.327
0.9956
EC
67.5
500.0
2.0027
0.1973
10.150
<0.0001
Raw data with supporting information
Raw data with assessment
Assessment plot
Metals data
Metals assessment
Related pages
Clean Seas Environment Monitoring Programme (CSEMP) accessment viewer tool