Marine Environment Monitoring and Assessment National database (MERMAN)

CSEMP assessment of lead in biota at Balcary Point (Solway Firth)

Statistical analysis

Details

Media : Biota (Plaice liver)
Station : IrishSea_BalcaryPoint_fi01, Balcary Point (Solway Firth)
Determinand : Lead
Units : μg kg-1 wet weight
Data extraction : 19 October 2016

Trend assessment

Analysis of variance

 DfAICAICcLog likDevianceChisqChi dfPr(>Chisq)
mean177.6080.17-35.8071.60
linear264.7170.04-28.3556.7114.891 10.0001
smooth (df = 2)366.6276.62-28.3156.62 0.084 10.7718
smooth (df = 3)467.9185.91-27.9655.91 0.712 10.3988

Change in log concentration

 Year startYear endFit startFit endChangeStd errortPr(>|t|)
overall200120135.3026.5071.20470.20895.7660.0004
last 20 years200120135.3026.5071.20470.20895.7660.0004

Status assessment

 Conc fittedConc refLog ratioStd errortPr(>t)
BAC 669.7 26.0-3.249 0.129-25.2321.0000
EC 669.71500.0 0.806 0.129 6.2620.0001

 


Raw data with supporting information

Raw data with supporting information for assessment of  lead in biota at Balcary Point (Solway Firth)


Raw data with assessment

Raw data with assessment of  lead in biota at Balcary Point (Solway Firth)


Assessment plot

Assessment plot for  lead in biota at Balcary Point (Solway Firth)


Metals data

Metals data for assessment of  lead in biota at Balcary Point (Solway Firth)


Metals assessment

Metals assessment of  lead in biota at Balcary Point (Solway Firth)


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