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.

Estimates the trophic position of a consumer relative
to a baseline species. It implements a Bayesian approach which combines an
interface to the 'JAGS' MCMC library of 'rjags' and stable isotopes. Users are
encouraged to test the package and send bugs and/or errors to
trophicposition-support@googlegroups.com.

Claudio Quezada-Romegialli

tRophicPosition

Bayesian Trophic Position Estimation with Stable Isotopes

TEF function

<dl><dt>author</dt>
<dd>could be either "Post" or "McCutchan" at the moment.</dd>
<dt>element</dt>
<dd>can be "both", "N" or "C"</dd>
<dt>type</dt>
<dd>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).</dd>
<dt>seed</dt>
<dd>integer to have replicated results</dd></dl>

Arguments

Trophic enrichment factors from bibliography — TEF

<dl>

<dt>author</dt>
<dd>could be either "Post" or "McCutchan" at the moment.</dd>


<dt>element</dt>
<dd>can be "both", "N" or "C"</dd>


<dt>type</dt>
<dd>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).</dd>


<dt>seed</dt>
<dd>integer to have replicated results</dd>

</dl>

TEF: Trophic enrichment factors from bibliography

Description

Usage

Value

Arguments

Examples