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Investigation of Northern Long-Eared Bat Roosting Sites on Bridges

File Language:
English


Filetype[PDF - 37.76 MB ]

Details

  • Creators:
  • Corporate Creators:
    University of Massachusetts at Amherst
  • Corporate Contributors:
  • Subject/TRT Terms:
  • Publication/ Report Number:
    NETC 14-2, NETCR 100
  • Resource Type:
    Tech Report
  • Geographical Coverage:
  • Edition:
    Final
  • Corporate Publisher:
    New England Transportation Consortium
  • Abstract:
    Populations of several non-migratory bat species have declined significantly in New England due to White-nose Syndrome, resulting in several species, including the Northern Long-Eared Bat (Myotis septentrionalis), being listed as threatened or endangered at the federal or state level. While bats are known to roost in bridges in other regions, it was not known whether bridge roosting was utilized in New England. The project initiated with a literature review and interviews with personnel involved in tracking bat populations, inspecting bridges and researching bridge roosting. The project team then conducted rapid visual screenings of 191 bridges throughout New England, and selected eighteen bridges for further in-depth study. Further study included visual inspection, acoustic monitoring, thermal imaging and evening monitoring of structures for emergence. A supplemental visual survey form was developed to supplement the Programmatic Biological Assessment for Transportation Projects in the Range of the Indiana Bat and Northern Long-Eared Bat (U.S. DOT). Comparisons and recommendations are included for evaluation methods including visual inspections, staining characteristics, acoustic monitoring and guano identification, with examples provided for each of the eighteen bridges.
  • Format:
    PDF
  • Collection(s):
  • Main Document Checksum:
    urn:sha256:40bd7e5ad93f60d36d55d830c975dd53d5ca4abac32f6e4965e37b62d4212f97
  • Download URL:
  • File Type:
    Filetype[PDF - 37.76 MB ]
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