densi_metrics {metrix}

Density metrics

Description

Calculates density measures

Usage

densi_metrics(dataset, store = FALSE, dec_c = ".", verbose = FALSE)

Arguments

dataset

A data.frame obtained from read_data.

store

A logical value indicating if the user want to store the results in a file.

dec_c

A character used for decimal separator on results file.

verbose

A logical value indicating if progress messages should be given.

Details

Density is a universal measure used in all types of biological studies. Density is best classified with trophic measurements because it is an element of production; however, it is difficult to interpret because it requires careful quantification and is not monotonous in response (i.e., density can decrease or increase in response to contamination) (Barbour et al., 1996).

Value

This function returns a data.frame with all the calculated density measures:

den_chir_dip

Diptera Chironomidae density.

den_non_chir_dip

Diptera no Chironomidae density.

den_ephe

Ephemeroptera density.

den_molus

Mollusca density.

den_gastr

Gastropoda density.

den_biv

Bivalvia density.

den_crus

Crustacea density.

den_nais

Naididae density.

den_lhoff

Limnodrilus hoffmeisteri density.

den_bothr

Bothrioneurum density.

den_tubi

Tubifex density.

den_dero

Dero density.

den_prist

Pristina density.

den_chiro

Chironomus density.

den_nais

Nais density.

den_hele

Heleobia density.

den_subchiro

Chironominae density.

den_suborth

Orthocladiinae density.

den_subtany

Tanypodinae density.

den_t

Total density.

den_t_bothr

Bothrioneurum/Total density.

den_t_lhoff

Limnodrilus hoffmeisteri/Total density.

den_t_tubi

Tubifex/Total density.

den_t_dero

Dero/Total density.

den_t_prist

Pristina/Total density.

den_t_chiro

Chironomus/Total density.

den_oli

Oligochaeta density.

den_tricho

Trichoptera density.

den_ostr

Ostracoda density.

den_amph

Amphipoda density.

den_polym

Polymitarcidae density.

den_hyal

Hyalella density.

den_coch

Cochliopidae density.

den_chironomidae

Chironomidae density.

Author(s)

Juan Manuel Cabrera and Julieta Capeletti.

References

Barbour MT, Gerritsen J, Griffith GE, Frydenborg R, McCarron E, White JS & Bastian ML (1996). A Framework for Biological Criteria for Florida Streams Using Benthic Macroinvertebrates. doi: 10.2307/1467948

See Also

read_data

Examples

#Load example data
example_data

#Run densi_metrics with that example_data
densimetrics<-densi_metrics(example_data)

#Check results
densimetrics