The Terrestrial Ecosystem Model (TEM) is a process-based ecosystem model that describes carbon, nitrogen and water dynamics of plants and soils for terrestrial ecosystems of the

The non-equilibrium, stable-isotope simulator (NESIS) calculates the dynamics in the isotopic signature of the stocks of an element using the output from any parent model that p

The modelshell program is a wrapper for mass balance type models. Modelshell provides a GUI interface, input and output routines, and a simple graphing routine.

The multiple element limitation (MBL MEL) model is a process based ecosystem model describing the plot scale dynamics of plants and soils.

The Marine Biological Laboratory General Ecosystem Model (MBL-GEM) is a process-based plot-scale model of C-N interactions in terrestrial ecosystems.

The Hydra Model is a carbon and water model for an individual tree. It is written in Borland Delphi (version 3, service pack 2) for IBM PC compatibles.

Model Description

We normally take two to three weeks (depending on backlog) to process batches of less than 50 samples. Larger batches may take longer to process.

Solid Materials
Derivatized Organics