Projects

CSEMP assessment of mercury in biota at Canvey Island (Thames)

Statistical analysis

Trend assessment

Analysis of variance

 DfAICAICcLog likDevianceChisqChi dfPr(>Chisq)
mean140.1341.63-17.0734.13
linear237.4940.40-14.7429.494.646 10.0311
smooth (df = 2)339.4544.45-14.7229.450.036 10.8488
smooth (df = 3)436.3744.37-12.1824.375.084 10.0241
smooth (df = 4)538.3250.57-12.1624.320.043 10.8351

Change in log concentration

 Year startYear endFit startFit endChangeStd errortPr(>|t|)
overall199920174.2223.558-0.6641 0.2855-2.3260.0368
last 20 years199920174.2223.558-0.6641 0.2855-2.3260.0368

Status assessment

 Conc fittedConc refLog ratioStd errortPr(>t)
BAC 35.1 14.7-0.8717 0.1807-4.8250.9998
EC 35.1500.0 2.6571 0.180714.708<0.0001

 


Raw data with supporting information

Raw data with supporting information for assessment of  mercury in biota at Canvey Island (Thames)


Raw data with assessment

Raw data with assessment of  mercury in biota at Canvey Island (Thames)


Assessment plot

Assessment plot for  mercury in biota at Canvey Island (Thames)


Metals data

Metals data for assessment of  mercury in biota at Canvey Island (Thames)


Metals assessment

Metals assessment of  mercury in biota at Canvey Island (Thames)


Related pages

  • Clean Seas Environment Monitoring Programme (CSEMP) accessment viewer tool
  • Assessment methodology for metals in biota
  • Accessment criteria for metals in biota