Projects

CSEMP assessment of lead in biota at Roa Island (Morecambe Bay)

Statistical analysis

Trend assessment

Analysis of variance

 DfAICAICcLog likDevianceChisqChi dfPr(>Chisq)
mean127.4229.42-10.7121.42
linear228.1732.17-10.0820.171.247 10.2640
smooth (df = 2)329.6436.78 -9.8219.640.534 10.4648
smooth (df = 3)431.3143.31 -9.6619.310.325 10.5687

Change in log concentration

 Year startYear endFit startFit endChangeStd errortPr(>|t|)
overall199920157.0266.766-0.25934 0.22658-1.1450.2790
last 20 years199920157.0266.766-0.25934 0.22658-1.1450.2790

Status assessment

 Conc fittedConc refLog ratioStd errortPr(>t)
BAC 868.1 211.9-1.4102 0.1511-9.3351.0000
EC 868.11500.0 0.5469 0.1511 3.6200.0023

 


Raw data with supporting information

Raw data with supporting information for assessment of  lead in biota at Roa Island (Morecambe Bay)


Raw data with assessment

Raw data with assessment of  lead in biota at Roa Island (Morecambe Bay)


Assessment plot

Assessment plot for  lead in biota at Roa Island (Morecambe Bay)


Metals data

Metals data for assessment of  lead in biota at Roa Island (Morecambe Bay)


Metals assessment

Metals assessment of  lead in biota at Roa Island (Morecambe Bay)


Related pages

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