Description of MSNUCY, a Computer Model Combining Interspecific Interactions with Nutrient Cycling

摘要

This report documents the multispecies nutrient cycling model (MSNUCY) and reviews the range of questions in theoretical ecology to which it can be applied. MSNUCY is a hybrid of (1) resource utilization models, in which population growth rate is governed by resource uptake kinetics that reduce potential growth when resources are limiting and (2) models of population dynamics, which take into account interactions governing the rate of consumption of one population by another. The hybrid is then constrained to look like an ecosystem model having nutrient cycles and energy flows. MSNUCY is written in FORTRAN IV but has many of the features of structured programming and provides graphical outputs of the food webs, population biomass changes, and species turnover. Sample input and output are given. 25 refs., 13 figs., 15 tabs. (ERA citation 10:037637)