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Project 1. Relict Leopard Frog Monitoring, Management, and Research

  • Spring-time diurnal surveys for relict leopard frogs were conducted at all sites.
  • Relict leopard frog annual translocation effort was initiated. Currently, 2,153 tadpoles are being reared at the Hill Top and Willow Beach Fish Hatchery facilities. Quagga mussels found at the hatchery might not be as problematic for this program as originally thought. Current prophylactic protocols for disease treatment in tadpoles and frogs are being evaluated for their ability to kill quagga mussel larvae.
  • Coordination and monitoring was provided to EPMT crews conducting tamarisk control at relict leopard frog sites in Black Canyon.
  • Coordination and assistance was provided to UNLV research efforts on habitat improvements for relict leopard frogs at Blue Point and Rogers Springs.

Project 2. Bald Eagle Winter Monitoring and Evaluation

  • Bald eagle count was completed using new protocols developed last quarter. Totals were: 87 bald eagles (30 adults and 57 immature), one immature golden eagle, and four unidentified eagles.
  • A draft annual report was written, submitted to NPS, and is currently under NPS review.

Project 3. Peregrine Falcon Monitoring and Evaluation

  • Peregrine falcon spring monitoring activities began early. A total of 30 passive surveys were completed; all known territories have been visited. Eight exploratory surveys were also conducted. One new territory along the shores of southern Lake Mojave was identified.

Project 4. Assessment of Six Covered and Three Evaluation Bird Species

  • Research status meeting was held; thrasher study focus will shift from field surveys to generating habitat variable data for preliminary analysis and modeling.

Project 5. Desert Tortoise Monitoring and Management

  • Population surveys for desert tortoises are not likely to be conducted this spring, discussions on project status to follow this quarter.
  • Desert tortoise and desert tortoise habitat compliance monitoring was continued.

Project 6. Shorebird Monitoring on Lakes Mead and Mohave

  • Monthly surveys were conducted on seven intensive monitored sites on Lakes Mead and Mojave throughout the past quarter with a total of 25 surveys completed.

Project 7. Desert Bighorn Sheep Habitat Use Monitoring in Relation to Highway Development.

  • Data management and QA of GPS collar information from bighorn sheep with 285 point locations processed on 11 radio collars were continued.
  • Data assessments and analyses of bighorn sheep movements were provided to NPS for presentation.

Other Activities

  • UNLV undergraduate intern was hired to assist part-time with research efforts.
  • Two professional presentations by individuals associated with this task agreement were given.
  • Two public presentations that include information associated with this task agreement were given.


Bald eagle--Geographical distribution; Bighorn sheep--Behavior; Desert tortoise--Protection; Empidonax traillii; Falco peregrinus; Gopherus agassizii; Habitat (Ecology)--Protection; Haliaeetus leucocephalus; Ovis canadensis; Peregrine falcon--Habitat; Southwestern willow flycatcher; United States--Lake Mead National Recreation Area; Wildlife monitoring


Desert Ecology | Ecology and Evolutionary Biology | Environmental Indicators and Impact Assessment | Environmental Monitoring




Cooperative Agreement Number: H8R07060001

Task Agreement Number: J8R07060012

Signatures have been redacted for privacy and security measures.