TY - JOUR T1 - Reflected Stochastic Differential Equation Models for Constrained Animal Movement JF - bioRxiv DO - 10.1101/152017 SP - 152017 AU - Ephraim M. Hanks AU - Devin S. Johnson AU - Mevin B. Hooten Y1 - 2017/01/01 UR - http://biorxiv.org/content/early/2017/06/19/152017.abstract N2 - Movement for many animal species is constrained in space by barriers such as rivers, shore-lines, or impassable cliffs. We develop an approach for modeling animal movement constrained in space by considering a class of constrained stochastic processes, reflected stochastic differential equations. Our approach generalizes existing methods for modeling unconstrained animal movement. We present methods for simulation and inference based on augmenting the constrained movement path with a latent unconstrained path and illustrate this augmentation with a simulation example and an analysis of telemetry data from a Steller sea lion (Eumatopias jubatus) in southeast Alaska. ER -