CESU stands for Cooperative Ecosystems Studies Units, which are collaborative networks involving government agencies, universities, tribes, and other partners that conduct research on natural and cultural resource management. CESUs were established to facilitate research and education in areas such as wildlife biology, ecology, geology, and cultural anthropology. These units provide opportunities for interdisciplinary research, training, and technical assistance to address complex environmental challenges. The goal of CESUs is to foster collaboration and innovation in the management of natural and cultural resources.