Index Catalog // ScholarsArchive@OSU

The use of logistic regression for developing habitat association models

Creator:: Sjamsoe'oed, Roza
Abstract:: Quantitative habitat models of wildlife-habitat relationships are developed to formalize our current understanding about an ecological system. A habitat association model is one of these models that is useful for answering questions about how the habitat is occupied, how much growth habitat is required by the animal, or how the...
Resource Type:: Dissertation
Full Text:: habitat association model is one of these models that is useful for answering questions about how the

Some mathematical models in ecology

Creator:: Engstrom-Heg, Verna Louise
Resource Type:: Masters Thesis
Full Text:: Some mathematical models in ecology SO1 MAThEMATICAL

Estimating large woody debris recruitment from adjacent riparian areas

Creator:: Minor, Kathleen P.
Abstract:: Large woody debris recruitment to streams from adjacent riparian forests influences stream channel morphology, sediment routing, and fish habitat. A mathematical model was developed to 1) determine whether the trees in a stand adjacent to a stream, upon falling, would provide large woody debris of a specified size to the...
Resource Type:: Capstone Project

Resource limited competition of two species : a dynamic model of a perturbed neutrally stable system

Creator:: Peterson, Bruce Alan, 1947-
Abstract:: 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...
Resource Type:: Dissertation
Full Text:: terms of a series approximation to a more complex model. This mathematical approach has been used

A model of trophic evolutionary pathways

Creator:: Morris, A. Kimo
Abstract:: 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...
Resource Type:: Masters Thesis
Full Text:: A model of trophic evolutionary pathways AN ABSTRACT OF THE

Conifer : a model of carbon and water flow through a coniferous forest : revised documentation

Creator:: Sollins, P., Brown, Alfred T., Swartzman, G. L. (Gordon L.), and U.S. International Biological Program. Coniferous Forest Biome
Abstract:: CONIFER simulates water, carbon, and energy dynamics of a coniferous forest. The model consists of 29 nonlinear difference equations. Measured driving variables include air temperature, dew point temperature, precipitation, solar radiation, and wind speed. Water and energy variables are updated daily; carbon variables are updated weekly. This report contains a...
Resource Type:: Technical Report
Full Text:: .15 COMPACT CONIFER: A Model of Carbon and Water Flow Through a Coniferous Forest. Revised

Conifer, a model of carbon and water flow through a coniferous forest : documentation

Creator:: Coniferous Forest Biome Modeling Group and U.S. International Biological Program. Coniferous Forest Biome
Abstract:: CONIFER simulates water, carbon, and energy dynamics of a coniferous forest. The model consists of 29 nonlinear difference equations. Driving variables include air temperature, dew point temperature, precipitation, solar radiation, and wind speed. Water and energy variables are updated daily; carbon variables are updated weekly. This report contains a detailed...
Resource Type:: Technical Report
Full Text:: st F3tvlio sy'trenh Amlysl;s. SWps CONIFER: A MODEL OF CARBON AND WATER FLOW THROUGH A CONIFEROUS

Trophic relation model based on density dependent processes

Creator:: Warren, Charles E., 1926-, U.S. International Biological Program. Coniferous Forest Biome, and University of Washington
Abstract:: "We have developed graphical and logical models for explaining the production of a consumer on the basis of the capacity of an ecosystem to produce that consumer (the productivity of the system for that consumer), on the basis of the biomass of the consumer, and on the basis of the...
Resource Type:: Technical Report
Full Text:: idealized sockeye lake system and an idealized salmonid stream system. MATHEMATICAL MODEL The mathematical

Hydrology and thermomechanics of liquid-dominated hydrothermal systems in Iceland

Creator:: Axelsson, Gudni
Abstract:: Low-temperature hydrothermal activity in Iceland is apparently mostly controlled by dikes and fractures. Conventional methods of production data analysis are not readily applicable in cases of heterogeneous/anisotropic fracture dominated hydrothermal systems. Moreover, the dikes and fractures may control the heat uptake mechanism of low-temperature activity. The free-surface response functions of...
Resource Type:: Dissertation
Full Text:: . Based on a homogeneous and isotropic half- space model apparent permeability estimates of 0.7

Structural and physiological changes with stand age : use of a process-based model to compare carbon and water fluxes in young and old-growth Douglas-fir/western hemlock forest stands

Creator:: Licata, Julian A.
Abstract:: Many studies have shown that net primary production in old-growth Douglas-fir/western hemlock forests is lower than in younger forests in similar sites, although the cause is still not clear. One possibility is that overall carbon assimilation, or GPP, is lower in older forests. However, it is difficult to measure GPP...
Resource Type:: Masters Thesis

ScholarsArchive@OSU

The use of logistic regression for developing habitat association models

Some mathematical models in ecology

Estimating large woody debris recruitment from adjacent riparian areas

Resource limited competition of two species : a dynamic model of a perturbed neutrally stable system

A model of trophic evolutionary pathways

Conifer : a model of carbon and water flow through a coniferous forest : revised documentation

Conifer, a model of carbon and water flow through a coniferous forest : documentation

Trophic relation model based on density dependent processes

Hydrology and thermomechanics of liquid-dominated hydrothermal systems in Iceland

Structural and physiological changes with stand age : use of a process-based model to compare carbon and water fluxes in young and old-growth Douglas-fir/western hemlock forest stands

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