Bighorn/Domestic Sheep Disease Risk Assessment Workshop (September 2007)

Program and speakers: (Click to view PowerPoint presentations)


Introduction to the issues, workshop process and agenda - Dave Jessup

The “Payette Principles” - Mike Miller

Field investigations, gross findings and population level effects - Mike Miller

Review of April 2007 Wild Sheep Respiratory Disease Workshop- Elena Garde

Working together to resolve conflicts - Melanie Woolever

The physical problems, costs and concerns of woolgrowers- Nancy East

Qualitative risk assessment - Tim Schommer

Quantitative risk assessment - Jonna Mazet and Tom Stephenson

WAFWA: Bighorn management guidelines - Kevin Hurley

Wrap up, Payette Principles consensus- Dave Jessup

Date: September 27, 2007 immediately following The Wildlife Society annual meeting.

Location: Hotel Arizona, in Tucson (one of the designated TWS host hotels), meeting rooms to be determined. Conference/government per diem rates of $83/night to be honored by the hotel for all attendees to this workshop. Attendees are responsible for making or extending their own hotel reservations and paying for them. Attendees are also responsible for their own travel arrangements.

Sponsored by: National Fish and Wildlife Foundation, University of California-Davis Wildlife Health Center, Foundation for North American Wild Sheep, and California Department of Fish and Game. No cost to attendees.

Audience: Up to 90 biologists, wildlife and range managers, public land users as well as academics and students are welcome. All attendees must register by contacting Alexis Nakamura at This e-mail address is being protected from spam bots, you need JavaScript enabled to view it or 530-752-4167.

Topics to be covered: Information on disease believed to be shared by bighorn and domestic sheep, summary of and links to most recent veterinary workshop on bighorn respiratory diseases, qualitative and quantitative disease risk assessment, problems posed to grazers in accommodating separation from bighorn, frameworks for seeking solutions, best management practices. Sources of foundational and historic information and links to other recent workshops will be provided. These topics will be covered in powerpoint discussion and lecture format by 9 biologists, veterinarians, conservationists and grazers.

History: A number of catastrophic die offs of bighorn sheep over the last several decades have been associated with contact with domestic sheep and goats. Most frequently the disease process has been pneumonia and in some cases whole herds have been lost. Efforts to enforce separation of bighorn from domestic sheep and goats as a means of disease control on public land have financial and operational implications for grazers and the need for this separation has been questioned. Federal forest and range management actions have been effected and in several cases litigation has occurred. Meetings sponsored by governmental and non-governmental sources have allowed the accumulation of a great deal of pertinent information but it has not been widely disseminated. Risk assessment, particularly quantitative risk assessment, has great promise as a tool for objectifying risk and potentially for guiding management actions.

Goal: To provide biologist, wildlife and wildland managers with the most current available information on the subject, in particular methods for doing quantitative disease risk assessment, background and foundational information, as well as varied perspectives on the subject.

Last Updated ( Friday, 09 November 2007 )