Invasive Plant Species Early Detection in the San Francisco Bay Area Network 2018 Annual Report
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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 2018 Annual Report Natural Resource Data Series NPS/NCCN/NRDS—2019/1211 ON THE COVER Biological science technician Sarah Inman maps invasive tree of heaven (Ailanthus altissima) along Lagunitas Creek. Golden Gate National Recreation Area, North District. Photograph by Eric Wrubel, NPS. Invasive Plant Species Early Detection in the San Francisco Bay Area Network 2018 Annual Report Natural Resource Data Series NPS/NCCN/NRDS—2019/1211 Eric Wrubel National Park Service San Francisco Bay Area Network Inventory & Monitoring Program Fort Cronkhite Building 1063 San Francisco, California 94965 March 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. 2019. Invasive plant species early detection in the San Francisco Bay Area Network: 2018 annual report. Natural Resource Data Series NPS/NCCN/NRDS—2019/1211. National Park Service, Fort Collins, Colorado. NPS 426/150757, 114/150757, 612/150757, 641/150757, March 2019 ii Contents Page Figures.................................................................................................................................................... v Tables ..................................................................................................................................................... v Executive Summary .............................................................................................................................. vi Acknowledgments ................................................................................................................................ vii Introduction ............................................................................................................................................ 1 Background..................................................................................................................................... 1 Objectives ....................................................................................................................................... 1 Methods .................................................................................................................................................. 2 Species List Revisions .................................................................................................................... 2 Prioritization ................................................................................................................................... 4 Revisit Schedules............................................................................................................................ 5 Field Methods ................................................................................................................................. 5 Results .................................................................................................................................................... 7 PORE .............................................................................................................................................. 7 Search Effort .............................................................................................................................. 7 Species Detected ........................................................................................................................ 7 Maps .......................................................................................................................................... 9 PINN ............................................................................................................................................. 11 Search Effort ............................................................................................................................ 11 Species Detected ...................................................................................................................... 11 Maps ........................................................................................................................................ 11 JOMU ........................................................................................................................................... 13 Search Effort ............................................................................................................................ 13 Species Detected ...................................................................................................................... 13 Maps ........................................................................................................................................ 13 Season highlights ................................................................................................................................. 15 iii Contents (continued) Page Communication ............................................................................................................................ 15 Collaboration ................................................................................................................................ 15 Literature Cited .................................................................................................................................... 17 Glossary ............................................................................................................................................... 19 Appendix A: 2018 lists of priority invasive species in SFAN parks. .................................................. 20 Appendix B: New species recorded in SFAN parks during early detection surveys. .......................... 29 iv Figures Page Figure 1. Map of target invasive plant species recorded at PORE during 2018 early detection surveys, showing point locations of priority 1 and priority 2 species. ................................. 10 Figure 2. Map of PINN belt transect monitoring results from 2015-2018 .......................................... 12 Figure 3. Map of target invasive plant species recorded at JOMU during 2018 early detection surveys, showing point locations of priority 1 and priority 2 species. ................................. 14 Tables Page Table 1. Revisions to the GOGA priority species list for 2018. ........................................................... 2 Table 2. Revisions to the PORE priority species list for 2018. ............................................................. 3 Table 3. Revisions to the PINN priority species list for 2018. .............................................................. 4 Table 4. Revisions to the JOMU priority species list for 2018. ............................................................ 4 Table 5. Tiered levels of data collection. .............................................................................................. 6 Table 7. PORE 2018 survey results. Total new occurrences of priority species................................... 7 Table 8. PINN 2018 survey results. Total occurrences of priority species in belt transects. .............. 11 Table 9. JOMU 2018 survey results. Total new occurrences of priority species. ............................... 13 v Executive Summary This report summarizes the results of the 2018 invasive plant early detection protocol surveys for the San Francisco Bay Area Network (SFAN) Inventory and Monitoring Program (I&M). Invasive plants (see Glossary) represent a high priority vital sign for SFAN because of the negative effects they have on park resources, including