pdr_fractionation

A compendium of possible production (P) and consumption (k) fractionation
values, by pool.

datasets

Pool dilution is a isotope tracer technique wherein a
biogeochemical pool is artifically enriched with its heavy isotopologue
and the gross productive and consumptive fluxes of that pool are
quantified by the change in pool size and isotopic composition over time.
This package calculates gross production and consumption rates from
closed-system isotopic pool dilution time series data. Pool size
concentrations and heavy isotope (e.g., 15N) content are measured over time
and the model optimizes production rate (P) and the first order rate
constant (k) by minimizing error in the model-predicted total pool size,
as well as the isotopic signature. The model optimizes rates by weighting
information against the signal:noise ratio of concentration and heavy-
isotope signatures using measurement precision as well as the magnitude of
change over time. The calculations used here are based on von Fischer and
Hedin (2002) <doi:10.1029/2001GB001448> with some modifications.

Kendalynn A. Morris

PoolDilutionR

Calculate Gross Biogeochemical Flux Rates from Isotope Pool
Dilution Data

Ben Bond-Lamberty

pdr_fractionation function

<dl>
 <dt>Pool</dt>
<dd>Name of pool (gas or solid)</dd> <dt>frac_P</dt>
<dd>Fractionation value of production (P)</dd> <dt>frac_k</dt>
<dd>Fractionation value of consumption (k)</dd> <dt>Default</dt>
<dd>Default for this pool? Logical</dd> <dt>Source</dt>
<dd>Source paper or URL</dd>
</dl>

Format

P and k fractionation values — pdr_fractionation

<dl>
 <dt>Pool</dt>
<dd>Name of pool (gas or solid)</dd>

 <dt>frac_P</dt>
<dd>Fractionation value of production (P)</dd>

 <dt>frac_k</dt>
<dd>Fractionation value of consumption (k)</dd>

 <dt>Default</dt>
<dd>Default for this pool? Logical</dd>

 <dt>Source</dt>
<dd>Source paper or URL</dd>


</dl>

pdr_fractionation: P and k fractionation values

Description

Usage

Arguments

Format