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CSEMP assessment of lead in biota at Morecambe Bay

Statistical analysis

Details

Media : Biota (Common dab liver)
Station : IrishSea_IrSIntermediateE_fi04 (Morecambe Bay)
Determinand : Lead
Units : μg kg-1 wet weight
Data extraction : 20 July 2018

Trend assessment

Analysis of variance

 DfAICAICcLog likDevianceChisqChi dfPr(>Chisq)
mean187.64 90.21-40.8281.64
linear283.77 89.11-37.8975.775.868 10.0154
smooth (df = 2)385.46 95.46-37.7375.460.318 10.5730
smooth (df = 3)487.38105.38-37.6975.380.076 10.7824

Change in log concentration

 Year startYear endFit startFit endChangeStd errortPr(>|t|)
overall200120165.5437.2241.68130.59382.8310.0221
last 20 years200120165.5437.2241.68130.59382.8310.0221

Status assessment

 Conc fittedConc refLog ratioStd errortPr(>t)
BAC1371.9 26.0-3.966 0.384-10.3181.0000
EC1371.91500.0 0.089 0.384 0.2320.4111

 


Raw data with supporting information

Raw data with supporting information for assessment of  lead in biota at Morecambe Bay


Raw data with assessment

Raw data with assessment of  lead in biota at Morecambe Bay


Assessment plot

Assessment plot for  lead in biota at Morecambe Bay


Metals data

Metals data for assessment of  lead in biota at Morecambe Bay


Metals assessment

Metals assessment of  lead in biota at 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