This paper presents a framework for analyzing efficient spatial allocation of forest
management efforts - fuel treatment and harvest - under the risk of fire. The framework
integrates a fire behavior model and a spatially-explicit stochastic dynamic optimization
model. I investigate the effects of spatial interaction across plots during forest...
The problem of determining an optimal sequence of decisions in
even-aged stand management is analyzed and solved with an alternative to
the traditional dynamic programming network. The new method is derived
independently from two different approaches to the problem: Network
optimization and generalized LaGrange multipliers. Both derivations are
presented. It...
A complex and sometimes serious problem facing modern day forest
managers is that of estimating and analyzing potential on-site impacts
which result from forest activities. A major type of adverse impact
is man-Initiated forest erosion. This consequence can be substantially
magnified when forest harvest and road activities are implemented in...
An hierarchically structured resource flow competition model
for two species is developed. The model is shown to be
intrinsically neutrally stable with a dynamical behavior
derived from perturbation responses. The model properties
are contrasted with those of a conventionally interpreted
Lotka-Volterra competition model.
A simulation developed from the model is...
There has been an increased interest in the
quantification of pattern in ecological systems over the past
years. This interest is motivated by the desire to construct
valid models which extend across many scales. Spatial methods
must quantify pattern, discriminate types of pattern, and
relate hierarchical phenomena across scales. Wavelet...
Calow (1983) realized that differences between parasites and their free-living
relatives can be explained by the differences in nutrient richness. I
propose a model that is based on Calow's idea which identifies the relative
position of different trophic strategies (e.g. predation, grazing, parasitism and
others) based on (1) the differences...