dietr (version 1.1.6-1)

Diet Estimated Trophic Levels

Description

Estimates fractional trophic level from quantitative and qualitative diet data and calculates electivity indices in R. Borstein (2020) .

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Install

install.packages('dietr')

Monthly Downloads

280

Version

1.1.6-1

License

GPL (>= 2)

Issues

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Repository

https://github.com/sborstein/dietr

Maintainer

Samuel Borstein

Last Published

January 23rd, 2025

Functions in dietr (1.1.6-1)

Converts FishBase/SealifBase food item diet data obtained from the diet function into a usable format for dietr

GastrosomaticIndex

Calculates Gastro-somatic Index (AKA Fullness Index, Index of fullness)

ConvertFishbaseDiet

Converts FishBase/SealifBase diet data obtained from rfishbase for use with dietr

FoodTroph

Calculates trophic level from qualitative food item data for species, populations, and individuals using a random subsampling routine.

DietTroph

Calculates trophic level from percentage based quantitative diet data (volumetric, weight, etc.) for species, populations, and individuals.

FishBasePreyVals

Electivity

Calculates a variety of electivity indices and foraging ratios

CompositeIndices

Calculates various composite indices for studying trophic ecology

PlotElectivity

Creates Electivity plots

CortesPreyVals

Casaux1998

VacuityIndex

Calculates the vacuity index, the proportion of fish which contain food in their stomach.

dietr

Diet Estimated Trophic Levels in R