A Spatially-Varying Stochastic Differential Equation Model for Animal Movement
We utilize a stochastic differential equation approach to model animal movement. Spatially-varying behavior is modeled using nonparametric functional estimates of a potential surface and a friction surface. The potential surface primarily accounts for directional bias, whereas the friction surface allows for variability in movement rates. These methods will be used to analyze the movement of ants in a colony to understand how space is used inside the nest..