Nutrient Budgeter

A MATLAB-based program to simplify the calculation of watershed
nitrogen and phosphorus budgets

Sylvia C. Schaefer and Merryl Alber
Department of Marine Sciences, University of Georgia, Athens, GA 30602, USA

Nutrient Budgeter is a MATLAB-based program for calculating nitrogen and phosphorus inputs to watersheds. Nitrogen inputs calculated include atmospheric deposition, fertilizer use, net food and feed import, and biological fixation. Phosphorus inputs calculated include fertilizer use and net food and feed import.

For a complete user guide, please see the documentation available below.

Software requirements:

MATLAB (ver. R2009a or higher)
MATLAB Statistics Toolbox
Microsoft Excel (Windows system)

Distribution Files:

Documentation
Program files with samples (.zip file)

References:

Boyer, E.W., Goodale, C.L., Jaworski, N.A., Howarth, R.W., 2002. Anthropogenic nitrogen sources and relationships to riverine nitrogen export in the northeastern USA. Biogeochemistry 57, 137-169.