A spatially explicit population model written in C++ programming language is used in
this study examining the population dynamics of the Desert Tortoise (Gopherus
agassizii) in the California Mojave Desert. The model is constructed with hexagonal
divisions of space, and with one-year increments of time. Four thematic maps: vegetation,
soil...
present a unique modeling approach to investigate the
potential impacts of future land use alternatives on amphibian population
dynamics in two agricultural watersheds in central Iowa. An individual-based
spatially explicit population was used to predict the consequences of alternative
landscape design and management for populations of four amphibian species. The...
Geomorphic response to watershed disturbances commonly results in
alterations of landforms. Subsequent geomorphic recovery is dependent on the ability
of flows to entrain, transport, and organize inorganic and organic material on hillslopes
and in channels. This research analyzed changes in sediment production, channel
structure, and channel organization following disturbances in...
Louisiana Army Ammunition Plant (LAAP), located near Shreveport, Louisiana, is a
government-owned contractor-operated plant. Its purpose is to manufacture, load and
assemble ammunition items. Area P has been used over the past 40 years to dump
explosive-laden wastewater into 16 unlined lagoons. In 1989 LAAP was placed on the
National...
This study examined the question of whether a big island can be divided into many smaller
islands with the same pattern of area-species curve as that of the complete island. To address
this question, this study used data on the number and distribution of amphibians and
reptiles on Puerto Rico...
Two examples of Pacific rim plate boundary deformation are presented. In the first
part of the thesis crustal models are derived for the northwestern part of the Vizcaino
block in California using marine seismic and gravity data collected by the Mendocino
Triple Junction Seismic Experiment. A northwest-southeast trending kink in...
Water right marketing and transfers represent a resource reallocation
strategy that has received considerable attention in the American West owing to
nearly full appropriation of water in the region. Several western states permit
transfers between different uses and places of use thus allowing water to move to
higher-value economic activities....
Purpose
The purpose of this project is to aid the Umpqua Regional Council of Governments as
they try to identify buildable lands in Douglas County, Oregon particularly in the cities of
Reedsport and Sutherlin. This project will help Reedsport upgrade its recently completed
Buildable Lands Inventory and provide Sutherlin with...
The Oregon Dunes National Recreation Area is managed by the Siuslaw
Forest division of the United States Forest Service (USFS). This area has gradually been
overcome by vegetation since the 1950's, originating with the exotic European Beach
Grass (Ammophila arenaria). The invasion of this exotic vegetation has resulted in a...