The effectiveness of wildlife crossing structures for black bears in Madison County, North Carolina.

Details

• Creators:
  Jones, Elizabeth R. ; Lancia, Richard ; Doerr, Phil
• Corporate Creators:
  North Carolina State University
• Subject/TRT Terms:
  • Wildlife crossings
  • Black bear--North Carolina--Madison County
  • Wildlife crossings--North Carolina--Madison County
• Publication/ Report Number:
  FHWA/NC/2006-62
• Resource Type:
  Tech Report
• Geographical Coverage:
  North Carolina
• Edition:
  Final report; June 2005-July 2007.
• Corporate Publisher:
  North Carolina. Department of Transportation. Research and Analysis Group
• Abstract:
  Roads have become an integral part of our society, but recently society has begun to realize the ecological impact that ; roads have on their surroundings. One major effect that roads have on large mammals is creating a barrier to movement of ; individuals both between and within populations. In an effort to alleviate this problem on a new interstate project, the North ; Carolina Department of Transportation constructed 2 8 x 8 feet (2.4 x 2.4 m) concrete box culverts on I-26 in Madison County, ; North Carolina, intended for use by North American black bears (Ursus americanus). Black bears have been observed using a ; variety of crossing structures, and it is not known what type of design best suits their needs. To determine the effectiveness of ; these crossing structures, each culvert’s wildlife activity was recorded by Cuddeback digital still cameras. In addition, digital ; video data were captured at one of the culverts and sampled to detect wildlife use of the culvert. From these data, detection ; probabilities and an overall estimate of wildlife use were calculated. Wildlife crossings at other structures along the roadway ; were also recorded, specifically at culverts built to carry streams under the interstate. Also, still cameras were installed at a few ; likely crossing locations along the roadway in an attempt to capture black bear presence adjacent to the roadway. Lastly, local ; residents were solicited for their crossing observations.
  More +
• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/21345/dot_21345_DS1.pdf
• File Type:
  [PDF - 917.17 KB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:ab4f2da50055b01488f919891dfd56d4ef54e33ea0d2f8ba4bff713afbfb812879a5a161a14ff6fb51c4bb41c555e034d8fb0697d9d288e2879d3e8473460e96