which is often applied in high dosage to forest environments to increase biomass productivity and economic return. A. boreas is harmed by the dermal absorption of this chemical, which can lead to increased mortality. References Further reading (2004) "The history of a Nearctic colonization: Molecular phylogenetics and biogeography of the Nearctic toads (Bufo)". Evolution 58: 2517–2535. Browne C.L. and C.A. Paszkowski. 2010. Hibernation Sites of Western Toads (Anaxyrus boreas): Characterization and Management implications. Herpetological Conservation and Biology 5:49-63 Engel, Ivy. “Western Wyoming Toad Deals With A Deadly Disease In A Novel Way.” Wyoming Public Media This article is based on a description from A Field Guide to the Reptiles and Amphibians of Coastal Southern California, Robert N. Fisher and Ted J. Case, USGS. External links Anaxyrus Amphibians of Canada Amphibians of Mexico Amphibians of the United States Fauna of the Western United States Fauna of the Rocky Mountains Fauna of the Sierra Nevada (United States) Fauna of the California chaparral and woodlands Fauna of the San Francisco Bay Area Amphibians described in 1852 Taxa named by Spencer Fullerton Baird