Cooperative Research Units
Education, Research And Technical Assistance For Managing Our Natural Resources
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The Development of an Adaptive, Decision-Support Tool for the Conservation and Recovery of Least Chub, Iotichthys phlegethontis


August 2011 - December 2013


The least chub, Iotichthys phlegethontis, is a small endemic fish species native to Bonneville Basin, Utah. The species was reportedly common in the beginning of the 20th century and was found in streams, freshwater ponds, wetlands, and springs throughout the Great Basin. However, the species began to decline mid-century and has continued to decline for the last two decades. Currently, five wild populations of the species exist. Reasons for the species decline are varied and include: habitat loss and degradation due livestock, energy exploration and development, and groundwater withdrawal; interactions with nonnative species; and isolation and fragmentation of extant populations. To reverse the declines, natural resource managers need explicit tools to identify the most effective conservation strategies. . The goal of this project is to develop decision support tools for assisting biologists to manage the least chub.


Current Staff

Federal Staff: 95

Masters Students: 244

Phd Students: 144

Post Docs: 55

University Staff: 251

5 Year Summary

Students graduated: 680

Scientific Publications: 1916

Presentations: 4259



Funding Agencies

  • BLM


Cooperative Research Units Program Headquarters Cooperators

  1. U.S. Geological Survey