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Full-Text Articles in Forest Sciences
Density And Feeding Habits Of Elk And Deer In Relation To Livestock Disturbance, Kenneth Clegg
Density And Feeding Habits Of Elk And Deer In Relation To Livestock Disturbance, Kenneth Clegg
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Elk (Cervus elaphus) and mule deer (Odocoileus hemionus) density and foraging behavior were monitored in conjunction with disturbance by livestock (cattle and sheep) from 1991 to 1993 at Deseret Land and Livestock property near Woodruff, Utah. Elk and deer densities declined by as much as 92% in response to introduction of livestock, while associated areas where livestock were absent did not show this response. Biting rates and bite sizes were estimated and used to determine instantaneous intake rate. These measures were similar between pastures with cattle present or absent in 1992 but differed in 1993 for …
Fuel Load And Plant Community Dynamics Of Bryce Canyon National Park, Doug W. Wight
Fuel Load And Plant Community Dynamics Of Bryce Canyon National Park, Doug W. Wight
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
A comprehensive fuel load assessment of all plant communities in Bryce Canyon National Park is provided. Fuel loads by community type are pooled into "fuel type associations" based on similarity in predicted fire behavior, and the fuel type associations are mapped throughout the Park. For each fuel type association, a series of fire behavior simulations is presented describing expected rates of spread and intensities for typical conditions in each month of the fire season and for a worst-case scenario. These fire behavior predictions provide guidelines for writing prescribed burning prescriptions or for quickly assessing the need for possible fire suppression …
Modeling Forest Dynamics At The Landscape Scale: Integrating A Computer Simulation Model And Geographic Information System, David W. Betz
Modeling Forest Dynamics At The Landscape Scale: Integrating A Computer Simulation Model And Geographic Information System, David W. Betz
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
This research demonstrates the ability to integrate a computer simulation model with a geographic information system (GIS) to predict forest community dynamics in both the spatial and temporal dimensions. A landscape scale computer simulation model, LANDSIM, was coupled with the Arc/Info GIS to simulate the interaction of forest fires and forest succession at Bryce Canyon National Park, Utah, and to produce maps of the predicted community types. The sensitivity of the model was tested with respect to the fire return interval, maximum neighbor spread, and the effect of slope upon the spread of simulated fires. The model predicts that each …
Incorporating Vegetative Diversity Measures In Forest-Level Planning: A Case Study On The Utah State University School Forest, David N. Holland
Incorporating Vegetative Diversity Measures In Forest-Level Planning: A Case Study On The Utah State University School Forest, David N. Holland
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Three indices of forest stand structural and compositional diversity were incorporated into a linear programming, timber-harvest scheduling model to examine the tradeoffs between managing stands for timber production and biodiversity objectives. While harvest-level objectives were fairly compatible with the maintenance of biodiversity, present net worth maximization resulted in substantial reductions in all three measures of biodiversity.