diat_ddi: Calculates the Duero Diatom Index (DDI)

In diathor: Calculate Ecological Information and Diatom Based Indices

Calculates the Duero Diatom Index (DDI)

Description

The input for all of these functions is the resulting dataframe (resultLoad) obtained from the diat_loadData() function A CSV or dataframe cannot be used directly with these functions, they have to be loaded first with the diat_loadData() function so the acronyms and species' names are recognized References for the index:

• Álvarez-Blanco, I., Blanco, S., Cejudo-Figueiras, C., & Bécares, E. (2013). The Duero Diatom Index (DDI) for river water quality assessment in NW Spain: design and validation. Environmental monitoring and assessment, 185, 969-981.

Sample data in the examples is taken from:

• Nicolosi Gelis, María Mercedes; Cochero, Joaquín; Donadelli, Jorge; Gómez, Nora. 2020. "Exploring the use of nuclear alterations, motility and ecological guilds in epipelic diatoms as biomonitoring tools for water quality improvement in urban impacted lowland streams". Ecological Indicators, 110, 105951. https://doi:10.1016/j.ecolind.2019.105951

Usage

diat_ddi(resultLoad, maxDistTaxa = 2)

Arguments

resultLoad	The resulting list obtained from the diat_loadData() function
maxDistTaxa	Integer. Number of characters that can differ in the species' names when compared to the internal database's name in the heuristic search. Default = 2

Examples

# Example using sample data included in the package (sampleData):
data("diat_sampleData")
# First, the diat_loadData() function has to be called to read the data
# The data will be stored into a list (loadedData)
# And an output folder will be selected through a dialog box if resultsPath is empty
# In the example, a temporary directory will be used in resultsPath
df <- diat_loadData(diat_sampleData, resultsPath = tempdir())
ddiResults <- diat_ddi(df)

diathor documentation built on April 4, 2025, 2:31 a.m.