Transportation agencies can make a difference for imperiled pollinators by managing existing roadside vegetation and designing new revegetation plantings with habitat needs in mind. This can generate public support for the agency and help to mitigate the negative ecological effects of roads.
NCHRP Web-Only Document 362: Pollinator Habitat Conservation Along Roadways, Volume 2: California, from TRB's National Cooperative Highway Research Program, is part of a 16-volume series, with each volume focused on a specific region of the United States, and is intended to provide relevant guidance to rights-of-way owners and operators for roadside vegetation management practices that support pollinators, as well as strategies that are compliant with the federal Endangered Species Act.
Supplemental to the document are a Dataset of California Accessory Materials, a Communications Toolbox, a Conduct of Research Report, and a Video.
All the other volumes are available on the webpage for NCHRP Web-Only Document 362: Pollinator Habitat Conservation Along Roadways, Volume 1: Alaska.
The other volumes are:
Volume 5: Great Lakes
Volume 6: Hawaii
Volume 7: Inland Northwest
Volume 8: Maritime Northwest
Volume 9: Mid-Atlantic
Volume 10: Midwest
Volume 11: Northeast
Volume 12: Northern Plains
Volume 13: Rocky Mountains
Volume 14: Southeast
Volume 15: Southern Plains
Volume 16: Southwest
National Academies of Sciences, Engineering, and Medicine. 2023. Pollinator Habitat Conservation Along Roadways, Volume 2: California. Washington, DC: The National Academies Press. https://doi.org/10.17226/27060.
|Chapter 1: Introduction||1-6|
|Chapter 2: Pollinator Biology and Roadsides||7-26|
|Chapter 3: Imperiled Pollinator Profiles||27-90|
|Chapter 4: Native Pollinators and the Federal Endangered Species Act: Compliance Strategies for State Departments of Transportation||91-122|
|Chapter 5: Considering Imperiled Pollinators in Transportation Planning, Design, and Construction||123-144|
|Chapter 6: Roadside Maintenance and Vegetation Management for Pollinators||145-180|
|Chapter 7: Revegetation and Pollinators: Design and Implementation||181-216|
|Chapter 8: Creating Climate-Smart Pollinator Habitat Along Roadsides||217-226|
|Chapter 9: Surveys, Monitoring Strategies, and Habitat Assessments||227-244|
|Chapter 10: Cost-Benefit Considerations for Pollinator Management on Roadsides||245-274|
|Chapter 11: Communication Support||275-300|
|Chapter 12: Conclusion||301-301|
|Acronyms and Abbreviations||302-302|
|References and Other Resources||317-360|
|Appendix A: Decision Support for Compliance with the Endangered Species Act: Listed Pollinators||361-364|
|Appendix B: Decision Support for Voluntary Actions and Regulatory Assurances: Imperiled Pollinators and the Endangered Species Act||365-366|
|Appendix C: Bee and Bee Group Recognition||367-374|
|Appendix D: Butterfly and Butterfly Group Recognition||375-378|
|Appendix E: Bumble Bee Recognition and Photography||379-380|
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