Proportion of Sediment-sensitive Invertebrates (PSI)

A sediment-sensitive macro-invertebrate metric that provides a proxy to describe the extent to which the surface of river bed are composed, or covered by sediments. It can be calculated at Taxonomic Levels 3, 4 & 5

Usage

psi(data, taxa_list = "TL3")

Arguments

data

Dataframe with at least three columns itemsample_id - unique idenftier for each sample itemlabel - Taxon name that matches to macroinvertebrateTaxa dataset itemresponse - Log abundance category

taxa_list

The taxonomic level the sample(s) have been identified at according to specificed taxa lists as described in WFD100 Further Development of River Invertebrate Classification Tool. Either "TL3" - Taxa list 3, "TL4" - Taxa list 4 or "TL5" - Taxa list 5.

Value

Dataframe with itemsample_id

itemparmaeter

itemquestion

itemresponse

References

Extence, Chris & Chadd, Richard & England, Judy & Dunbar, M.J. & Wood, Paul & Taylor, E.D.. (2010). The Assessment of Fine Sediment Accumulation in Rivers Using Macro-Invertebrate Community Response. River Research and Applications. 29. 10.1002/rra.1569.