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Wildlife & Ecosystems

Research, Documents & Reports

Listed below are research, documents, and reports pertinent to wildlife and ecosystems.  If you would like to suggest additional research, documents, or reports on this topic, please submit a short description to AASHTO (including any pertinent links) on the Share Info with AASHTO form.

 

Wildlife and Roads: A Resource to Help Mitigate Roads for Wildlife

An Internet-based interactive decision guide and resource center, Wildlife and Roads: A Resource to Help Mitigate Roads for Wildlife, was developed as part of National Cooperative Highway Research Program Project 25-27 and is now housed on the Center for Environmental Excellence by AASHTO website. The site provides a wealth of information, including links to the final NCHRP 25-27 report, as well as online access to related resources including a step-by-step decision guide for practitioners.  The final report, Evaluation of the Use and Effectiveness of Wildlife Crossings, summarizes research on the use and effectiveness of wildlife crossings to mitigate habitat fragmentation and reduce wildlife vehicle collisions. The report provides guidelines for the selection, configuration, and location of wildlife crossing types and suggestions for the monitoring and evaluation of their effectiveness and maintenance.

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Ecosystems

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Wildlife Impacts - General

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Wildlife Mitigation - General

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Impacts and Mitigation by Type

Mammals - Impacts

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Mammals - Mitigation

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Birds - Impacts

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Herpetofauna - Impacts

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Herpetofauna - Mitigation

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Fish - Impacts

 

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Fish - Mitigation

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Endangered Species Act

Federal Highway Administration

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U.S. Fish and Wildlife Service

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National Oceanic and Atmospheric Administration Marine Fisheries

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State Resources

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Other Resources

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GAO Reports

  • Transportation Planning: State and Metropolitan Planning Agencies Report Using Varied Methods to Consider Ecosystem Conservation. GAO-04-536 [PDF 2.19mb], May 17, 2004. Highlights [PDF 79kb]
  • Endangered Species: Despite Consultation Improvement Efforts in the Pacific Northwest, Concerns Persist about the Process. GAO-03-949T [PDF 178kb] June 25, 2003 Highlights [PDF 64kb] , Accessible Text, Abstract
  • Columbia River Basin Salmon and Steelhead: Federal Agencies' Recovery Responsibilities, Expenditures and Actions. GAO-02-612 [PDF 6.49mb] July 26, 2002 Accessible Text, Abstract
  • Endangered Species: Research Strategy and Long-Term Monitoring Needed for the Mojave Desert Tortoise Recovery Program. GAO-03-23 [PDF 970kb] December 9, 2002 Highlights [PDF 434kb] , Accessible Text, Abstract

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