John A. Bissonette

For the most updated publications and activities see my CV


Landscape ecology, terrestrial vertebrates, wildlife habitat and population response, ungulates,
population consequences of disturbance regimes, mustelids, marten, wildlife management, road ecology

Research Ecologist, U.S. Geological Survey

Leader, Utah Cooperative Fish and Wildlife Research Unit

Professor, Department of Wildland Resources


Utah Cooperative Fish and Wildlife Research Unit Annual Report 2007 Annual Report 2008

NCHRP Report 615. Evaluation of the Use and Effectiveness of Wildlife Crossings. Final Report 2008

Also available as a download at:



Click to see the final report dated 30 September 2004 for the statewide Utah Exclosures Project funded by the Utah Division of Wildlife Resources, the U.S. Forest Service and the Bureau of Land Management and conducted by Bill Adair and I at the USGS Utah Cooperative Fish and Wildlife Research Unit. We have prepared it as a short and concise, but thorough explanation of the current situation of exclosures statewide. We have given recommendations for improvement if this database is to be of maximum usefulness. We have provided 4 appendices that give all pertinent data regarding the exclosures database. Appendix I “Database Design Objectives and Methodology” and Appendix II “Business Rules and Validation Data” provide background data regarding how the database was developed and the decisions we made to construct the Access database. Appendix III is the Exclosure Inventory Master Table with summary information for all 1,013 exclosures, while Appendix IV “Summary Tables” provides in 26 tables summary data for ease of understanding the patterns exhibited by the exclosure data. It was an enormous effort with over 14,000 scanned documents (>7.5 Gigabytes) covering 1,013 exclosures statewide in Utah . The scanned documents are included on 18 CDs that have been transmitted to the Salt Lake offices of the Utah Division of Wildlife Resources and the BLM and to the Ogden Office of the USFS. Bill Adair (Post Doctoral Student) and I have provided the body of the report plus the four appendices on this site for your reading. Please take time to read the report.


The UT Exclosure Inventory database includes 18 CDs. The CD contents are compressed files with a .zip extension. The folders are large. You will need either a computer with lots of space and speed, or lots of patience.

CD Contents
UTExInv CD1-PDF Final Report
Appendix I: Database Design Objectives and Methodology
Appendix II: Business Rules and Validation Tables
Appendix III: Master Table
Appendix IV: Summary Tables

UT Exclosure Inventory.MDB
UT Ex Inv CD1 State of Utah
National Park Service
Private Lands
UT Ex Inv CD2 Ashley NF Duchesne-Roosevelt RD
UT Ex Inv CD3 Ashley NF Flaming Gorge RD /NRA
UT Ex Inv CD4 Ashley NF Vernal RD
UT Ex Inv CD5 Dixie NF Cedar City RD
  Dixie NF Escalante RD
  Dixie NF Pine Valley RD
UT Ex Inv CD6 Dixie NF Powell RD
  Dixie NF Teasdale RD
UT Ex Inv CD7 Fishlake NF Beaver RD

  Fishlake NF Fillmore RD

UT Ex Inv CD8 Fishlake NF Loa RD

  Fishlake NF Richfield RD

UT Ex Inv CD9 Manti-La Sal NF

  USFS RMRS Desert Experimental Station

UT Ex Inv CD10 Uinta NF Heber RD (Bryants Fork through Lower Soapstone)

UT Ex Inv CD11 Uinta NF Heber RD (Mill B through Wolf Creek )

UT Ex Inv CD12 Uinta NF Pleasant Grove RD

  Uinta NF Spanish Fork RD

UT Ex Inv CD13 Wasatch-Cache NF

UT Ex Inv CD14 BLM Cedar City DO
  BLM Fillmore DO
  BLM Grand Staircase-Escalante National Monument (GSENM)
  BLM Henry Mountains Field Station
  BLM Kanab DO
UT Ex Inv CD15 BLM Moab DO
UT Ex Inv CD16 BLM Monticello DO
UT Ex Inv CD17 BLM Price DO
  BLM Richfield DO
  BLM Salt Lake DO
  BLM St. George DO
UT Ex Inv CD18 BLM Vernal DO


Click here to see the final report dated 11 May 2005

In this report, we identify a total of 183 deer mortality hotspots. We defined a hotspot as a segment of road in which each mile had 11 or more collisions occur within it over 11 years. Core hotspots averaged 5.3 miles in length; all isolated hotspots were 1 mile in length. Hotspot collisions were concentrated; 57.74% of all collisions occurred within a cumulative, ~1001 km (622 mi), range, or 10.5% of total analyzed highway miles (~9,500 total km, ~5,900 mi). We provide data on the 51 routes that include the hotspots we identified.

We identified data issues with typical highway department data (PDF) and also calculated the costs of wildlife-vehicle accidents in Utah. PDF

John A. Bissonette
John A. Bissonette

Wildland Resources Dept. College of Natural Resources
Utah State University
Logan, Utah 84322-5290
(435)797-2511 Tel
(435)797-4025 Fax

(435)797-2443 Fax

When I'm Not Working
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Landscape Ecology
Road Ecology
Courses & Students
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