Replaced with revised version of paper 08/25/03.

Alien invasive species contribute to biodiversity loss and cause billions of dollars of economic damage in the Great Lakes. We examine the design and efficiency of a tradeable permit system for biological pollution due to alien species that invade the Great Lakes through the ballast water of...

We develop a watershed-based model of green payments to examine how payments applied to different environmental performance measures compare on the basis of economic efficiency, equity, and environmental outcomes. We also explore how targeting in the specification of water quality goals (e.g.,...

The spread of infectious disease among and between wild domesticated animals has become a major problem worldwide. Upon analyzing the dynamics of wildlife growth and infection when the disease animals cannot be identified separately from healthy wildlife prior to the kill, we find that...