Now showing items 1-10 of 28
An ecologically-based approach to the design of intercrop agroecosystems: An intercropping system of soybeans and tomatoes in Southern Michigan
(Elsevier, 1984-10)
A model is developed in which the elementary structure of plant competision is translated into the classical yield-density equation. Using the same reasoning, an interspecific form of the model is formulated to predict ...
Simulation of the potential for life history components to regulate walleye population size
(Elsevier, 1989-02)
A bioenergetic life history simulation model was applied to identify components of the walleye (Stezostedion vitrium) life history that had a potential for population regulation. The model combined a predator-prey model, ...
Species as historical individuals
(Kluwer Academic Publishers; Springer Science+Business Media, 1990-10)
The species category is defined as the smallest historical individual within which there is a parental pattern of ancestry and descent. The use of historical individual in this definition is consistent with the prevailing ...
Contaminant uptake by fish and the potential for transfer to humans modelled over time
(Elsevier, 1986-07)
A model is developed that enables coupling of contaminant uptake with the growth dynamics of fish, exploitation, and transfer and fate. Contaminant concentration in fish is a function of the properties of the contaminant, ...
An epidemiological model of the corn stunt system in Central America
(Elsevier, 1990)
There is increasing appreciation on the part of ecologists of the crucial role that pathogens may play in the structure of plant populations and communities. This study used classic equations of epidemiology to analyze ...
Dynamics of populations with nonoverlapping generations, continuous mortality, and discrete reproductive periods
(Elsevier, 1994-08)
Simple nonlinear difference equations have been used to describe the growth of populations with nonoverlapping generations; these equations assume mortality and recruitment to be discrete and instantaneous. In reality, ...
Development of Bayesian Monte Carlo techniques for water quality model uncertainty
(Elsevier, 1992-07)
A new technique, Bayesian Monte Carlo (BMC), is used to quantify errors in water quality models caused by uncertain parameters. BMC also provides estimates of parameter uncertainty as a function of observed data on model ...
Improving exposure assessment in environmental epidemiology: Application of spatio-temporal visualization tools
(Springer-Verlag; Springer-Verlag Berlin Heidelberg, 2005-05)
A thorough assessment of human exposure to environmental agents should incorporate mobility patterns and temporal changes in human behaviors and concentrations of contaminants; yet the temporal dimension is often ...
Thermodynamic modelling of bio-species accommodation
(Elsevier, 1978-01)
An ecological model has been constructed. A chemical analogy to the biological system has been developed, and the system's driving forces have been identified.
Symbolic Intersect Detection: A Method for Improving Spatial Intersect Joins
(Kluwer Academic Publishers; Springer Science+Business Media, 1998-06)
Due to the increasing popularity of spatial databases, researchers have focused their efforts on improving the query processing performance of the most expensive spatial database operation: the spatial join. While most ...