To collect scientifically credible data on the genetic status of the desert tortoise in the black mountains, focusing on the hybrid zone between the sonoran desert tortoise and the mohave desert…

The Department of the Interior Bureau of Land Management Arizona Region awarded a $198,593.61 cooperative agreement to the Arizona Department of Game and Fish on February 10, 2026, under the Threatened and Endangered Species program (CFDA 15.246).

The award funds collection of genetic and population data on desert tortoises in the Black Mountains, with focus on identifying and characterizing the hybrid zone where Sonoran Desert tortoise and Mohave Desert tortoise populations overlap. The recipient will monitor the Sonoran Desert tortoise, which is at-risk in Arizona, and implement avoidance, minimization, and mitigation measures for projects within or adjacent to suitable tortoise habitat. Work includes proactive surveying for tortoise habitat ahead of ground-disturbing activities, maintenance of sighting and habitat condition data, and staff and contractor training on protective measures.

Deliverables include detailed genetic and population data to guide conservation strategies, identification of hybrid zones to streamline Endangered Species Act consultations and reduce project approval delays, and improved habitat management capability for the BLM. The work supports the BLM's obligations under the Endangered Species Act and the 2015 Sonoran Desert Tortoise Candidate Conservation Agreement, with intended outcomes including proactive measures to prevent federal listing of the Sonoran Desert tortoise.

Performance occurs in Arizona with a period ending February 9, 2031.

Intended beneficiaries

Government agencies (BLM, azgfd, partners) gain actionable data for compliance and planning. Public increased awareness of species and habitats, supporting community engagement in conservation. Conservation stakeholders better tools to protect species and maintain ecological balance.