Now showing items 1-5 of 5
A Predator Susceptibility Model of Juvenile Salmon Survival and a Voronoi Tessellation-based Approach for Generating Hypothetical Forest Landscapes
In relating juvenile salmonid size to adult survival, past observational studies have shown mixed results, while modeling has been limited to regression methods lacking in ecological mechanism. This paper develops a simple 4-parameter model relating the survival of juvenile Chinook salmon (Oncorhynchus tshawytscha) to their ...
Fixed and Random Effects Models and Multistage Estimation Procedures for Statistical Population Reconstructions
Age-at-harvest data are routinely collected as part of game-management programs. These data represent a wealth of information regarding demographic processes and trends in wildlife abundance. Use of wildlife age-at-harvest data has blossomed only relatively recently in the literature despite its frequent collection by game ...
Using Presence-Absence Data on Areal Units to Model the Ranges and Range Shifts of Select South African Bird Species
The study of where species occur is an important concern in ecology. Over the last decade, the occupancy model has been the primary tool used in attempts to answer where, when and why species occur where they do. In this dissertation, the occupancy model is improved upon by adding a spatial component to account for similarities ...
A graphical user interface (GUI) input-based algorithm to automate generation of multi-state models for release-recapture studies
Release-recapture studies represent an important branch of population analysis and are the primary method used to investigate population survival and migration. As researchers seek to answer more detailed questions about the populations under study, and as the study designs themselves become increasingly complex, the models ...
Understory Light Availability and Spatial Variation
Photosynthetically active radiation is a critical resource for understory plants and its availability and heterogeneity plays a major role in seedling regeneration and survival. This thesis examines various methods to quantify understory light availability, temporal dynamics and spatial variation in a shaded environment. ...