Projects

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

Statistical analysis

Trend assessment

Analysis of variance

 DfAICAICcLog likDevianceChisqChi dfPr(>Chisq)
mean149.5051.00-21.7543.50
linear248.4451.35-20.2240.443.068 10.0799
smooth (df = 2)350.3355.33-20.1640.330.107 10.7434
smooth (df = 3)446.2254.22-17.1134.226.107 10.0135
smooth (df = 4)547.2459.49-16.6233.240.988 10.3203

Change in log concentration

 Year startYear endFit startFit endChangeStd errortPr(>|t|)
overall199920176.5346.065-0.4694 0.2544-1.8450.0879
last 20 years199920176.5346.065-0.4694 0.2544-1.8450.0879

Status assessment

 Conc fittedConc refLog ratioStd errortPr(>t)
BAC 430.4 156.5-1.0118 0.1618-6.2521.0000
EC 430.41000.0 0.8430 0.1618 5.209<0.0001

 


Raw data with supporting information

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


Raw data with assessment

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


Assessment plot

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


Metals data

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


Metals assessment

Metals assessment of  cadmium 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