TEF: Trophic enrichment factors from bibliography

In tRophicPosition: Bayesian Trophic Position Estimation with Stable Isotopes

Trophic enrichment factors from bibliography

Description

This function returns trophic enrichment factors (TEF), given an author, element and a type. For convenience 'type' includes a number of categories depending on the author. At the moment it includes TEF data from Post (2002) and from McCutchan et al (2003). This function is maintained for compatibility backwards of version 0.6.8.

Usage

TEF(author = "Post", element = "both", type = "all", seed = 3)

Arguments

author	could be either "Post" or "McCutchan" at the moment.
element	can be "both", "N" or "C"
type	this argument only works for "McCutchan" author (their Table 3). "all" returns all TEF data; "whole" and "muscle" returns TEF separated per type analysis; "acidified" and "unacidified" returns TEF separated per acidification; and "Rainbow Trout" and "Brook Trout" returns TEF separated per fish species (according to their Table 1).
seed	integer to have replicated results

Value

a list (if element = "both") or a vector (if element ="N" or element = "C") containing TDF values

Examples

# TEF() is deprecated, use TDF() instead:
TDF(author = "McCutchan", element = "N")

tRophicPosition documentation built on Dec. 28, 2022, 2:27 a.m.