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Invasive Plant Species Early Detection in the San Francisco Bay Area Network 2016 Annual Report

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Invasive Plant Species Early Detection in the San Francisco Bay Area Network 2016 Annual Report National Park Service U.S. Department of the Interior Natural Resource Stewardship and Science Invasive Plant Species Early Detection in the San Francisco Bay Area Network 2016 Annual Report Natural Resource Data Series NPS/SFAN/NRDS—2018/1159 ON THE COVER Early detection intern Jennifer Velasquez maps rose clover (Trifolium hirtum) along the shoulder of Highway 146 at Pinnacles National Park. Photograph by Eric Wrubel, NPS Invasive Plant Species Early Detection in the San Francisco Bay Area Network 2016 Annual Report Natural Resource Data Series NPS/SFAN/NRDS—2018/1159 Eric Wrubel and Raphaela E. Floreani Buzbee National Park Service San Francisco Bay Area Network Inventory & Monitoring Program Fort Cronkhite Building 1063 San Francisco, California 94965 April 2018 U.S. Department of the Interior National Park Service Natural Resource Stewardship and Science Fort Collins, Colorado The National Park Service, Natural Resource Stewardship and Science office in Fort Collins, Colorado, publishes a range of reports that address natural resource topics. These reports are of interest and applicability to a broad audience in the National Park Service and others in natural resource management, including scientists, conservation and environmental constituencies, and the public. The Natural Resource Data Series is intended for the timely release of basic data sets and data summaries. Care has been taken to assure accuracy of raw data values, but a thorough analysis and interpretation of the data has not been completed. Consequently, the initial analyses of data in this report are provisional and subject to change. All manuscripts in the series receive the appropriate level of peer review to ensure that the information is scientifically credible, technically accurate, appropriately written for the intended audience, and designed and published in a professional manner. Data in this report were collected and analyzed using methods based on established, peer-reviewed protocols and were analyzed and interpreted within the guidelines of the protocols. Views, statements, findings, conclusions, recommendations, and data in this report do not necessarily reflect views and policies of the National Park Service, U.S. Department of the Interior. Mention of trade names or commercial products does not constitute endorsement or recommendation for use by the U.S. Government. This report is available in digital format from the San Francisco Bay Area Network Inventory and Monitoring website and the Natural Resource Publications Management website. If you have difficulty accessing information in this publication, particularly if using assistive technology, please email [email protected]. Please cite this publication as: Wrubel, E., and R. E. Floreani Buzbee. 2018. Invasive plant species early detection in the San Francisco Bay Area Network: 2016 annual report. Natural Resource Data Series NPS/SFAN/NRDS—2018/1159. National Park Service, Fort Collins, Colorado. NPS 114/144728, 426/144728, 612/144728, 641/144728, April 2018 ii Contents Page Tables ..................................................................................................................................................... v Appendices ............................................................................................................................................. v Executive Summary .............................................................................................................................. vi Acknowledgments ................................................................................................................................ vii Introduction ............................................................................................................................................ 1 Background .................................................................................................................................... 1 Objectives ....................................................................................................................................... 1 Methods .................................................................................................................................................. 3 Species List Revisions .................................................................................................................... 3 Prioritization ................................................................................................................................... 5 Revisit Schedules ........................................................................................................................... 5 Field Methods ................................................................................................................................. 5 Results .................................................................................................................................................... 8 GOGA ............................................................................................................................................ 8 Search Effort .............................................................................................................................. 8 Species Found ............................................................................................................................ 8 PORE ............................................................................................................................................ 10 Search Effort ............................................................................................................................ 10 Species Found .......................................................................................................................... 10 PINN ............................................................................................................................................. 12 Search Effort ............................................................................................................................ 12 Species Found .......................................................................................................................... 12 JOMU ........................................................................................................................................... 13 Search Effort ............................................................................................................................ 13 Species Found .......................................................................................................................... 13 Discussion ............................................................................................................................................ 15 Species Occurrences ..................................................................................................................... 15 New Taxa ..................................................................................................................................... 15 iii Contents Page Outreach ....................................................................................................................................... 15 Collaboration ................................................................................................................................ 16 Literature Cited .................................................................................................................................... 18 Glossary ............................................................................................................................................... 19 iv Tables Page Table 1. Revisions to the Golden Gate National Recreation Area (GOGA) priority species list for 2016. .............................................................................................................................. 3 Table 2. Revisions to the Point Reyes National Seashore (PORE) priority species list for 2016. ....................................................................................................................................................... 3 Table 3. Revisions to the Pinnacles National Park (PINN) priority species list for 2016. .................... 4 Table 4. Revisions to the John Muir National Historic Site (JOMU) priority species list for 2016. ................................................................................................................................................. 4 Table 5. Tiered levels of data collection used in the Invasive Plant Species Early Detection Monitoring Program. ............................................................................................................. 6 Table 6. Golden Gate National Recreation Area (GOGA) 2016 survey results. Total new occurrences of priority species. .............................................................................................................. 8 Table 7. Point Reyes National Seashore (PORE) 2016 survey results. Total new occurrences of priority species. ............................................................................................................ 11 Table 8. Pinnacles National Park (PINN) 2016 survey results. Total number of transects with priority species present. ............................................................................................................... 13 Table 9. John Muir National Historic
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