CBI worked with San Diego Management and Monitoring Program (SDMMP) and San Diego land managers to conduct a comprehensive review of existing information for San Diego thornmint, Acanthomintha ilicifolia.

Under a Local Assistance Grant from the California Department of Fish and Wildlife, the Conservation Biology Institute worked with the San Diego Management and Monitoring Program (SDMMP) and land managers in the San Diego region to conduct a comprehensive review of existing information, past and current research, and current management and monitoring efforts for San Diego thornmint, Acanthomintha ilicifolia.  SDMMP assimilated a spatially explicit database of all populations and conducted habitat suitability modeling for this species.

This report addresses the management challenge that we face with many annual, edaphic species that undergo large population fluctuations, occur across a fragmented landscape, are vulnerable to many threats and stressors, and may have low genetic diversity due to reduced population sizes, geographic isolation, and loss of pollinators.  Therefore, our approach may serve as a model for other plant species covered by the Natural Community Conservation Planning programs in San Diego County.  This approach included:

Appendix A of this document provides the necessary information for inclusion in the Management Strategic Plan prepared by the SDMMP.  Appendix B provides a comprehensive matrix of populations with data contributed by land managers. Appendix C includes a conceptual model and threats assessment and provides the results of SDMMP habitat suitability modeling. Appendices D and E provide Best Management Practices and monitoring metrics, respectively.

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