Projects

CSEMP assessment of mercury in biota at West Mersea Beach (Blackwater)

Statistical analysis

Trend assessment

Analysis of variance

 DfAICAICcLog likDevianceChisqChi dfPr(>Chisq)
mean1-22.56-20.7614.28-28.56
linear2-21.58-18.0314.79-29.581.022 10.3121
smooth (df = 2)3-24.27-18.0217.13-34.274.689 10.0304
smooth (df = 3)4-27.13-16.8419.56-39.134.856 10.0275

Change in log concentration

 Year startYear endFit startFit endChangeStd errortPr(>|t|)
overall199920173.7723.551-0.22165 0.21500-1.0310.3247
last 20 years199920173.7723.551-0.22165 0.21500-1.0310.3247

Status assessment

 Conc fittedConc refLog ratioStd errortPr(>t)
BAC 34.8 14.7-0.8649 0.1310-6.6041.0000
EC 34.8500.0 2.6639 0.131020.340<0.0001

 


Raw data with supporting information

Raw data with supporting information for assessment of  mercury in biota at West Mersea Beach (Blackwater)


Raw data with assessment

Raw data with assessment of  mercury in biota at West Mersea Beach (Blackwater)


Assessment plot

Assessment plot for  mercury in biota at West Mersea Beach (Blackwater)


Metals data

Metals data for assessment of  mercury in biota at West Mersea Beach (Blackwater)


Metals assessment

Metals assessment of  mercury in biota at West Mersea Beach (Blackwater)


Related pages

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