Dam building activities of beaver (Castor canadensis) create ponds that apparently augment habitat available to otter (Lutra canadensis). This paper considers possible effects of beaver activity and pond formation on distribution and populations of otter in Arkansas. Literature synthesis and analysis of harvest records were used to investigate the suspected relationship.
Tumlison, C. Renn; Karnes, Mark R.; and King, Anthony W.
"River Otter in Arkansas: II. Indications of a Beaver-Facilitated Commensal Relationship,"
Journal of the Arkansas Academy of Science: Vol. 36
, Article 22.
Available at: http://scholarworks.uark.edu/jaas/vol36/iss1/22