numeric vector containing benthic indices

good


The ecological quality ratio is the ratio beween a parameter value and its
 reference value:
 $$EQR = \frac{x-bad}{good-bad}$$
 Depending on <code>bad</code> and <code>good</code>, the EQR usually
 (but not necessarily!) varies between 0 (bad ecological quality) and 1 (good
 ecological quality).


Tool for analysing benthos data. It estimates several quality
indices like the total abundance of species, species richness,
Margalef's d, AZTI Marine Biotic Index (AMBI), and the BEQI-2 index.
Furthermore, additional (optional) features are provided that enhance data
preprocessing: (1) genus to species conversion, i.e.,taxa counts at the
taxonomic genus level can optionally be converted to the species level and
(2) pooling: small samples are combined to bigger samples with a
standardized size to (a) meet the data requirements of the AMBI,
(b) generate comparable species richness values and
(c) give a higher benthos signal to noise ratio.

eqr: Ecological Quality Ratio (EQR)

Description

Usage

Arguments

Value