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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 ...
Bio-Behavioral Models for HIV Prevention
<italic>Background</italic>: In this dissertation, I model HIV transmission in two different populations: circular migrants in South Africa, and men who have sex with men (MSM) in Southern California. <italic>Objectives</italic>: One objective of the circular migrations (Chapter 2) project is to compare compartmental and ...
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. ...