Resource Management Plan for Sage Hill Preserve San Diego County
Total Page:16
File Type:pdf, Size:1020Kb
Resource Management Plan for Sage Hill Preserve San Diego County June 2010 Sage Hill Preserve June 2010 Draft Resource Management Plan TABLE OF CONTENTS 1.0 INTRODUCTION ........................................................................................ 1 1.1. Purpose of Management Plan ................................................................. 1 1.1.1 MSCP Background .............................................................................. 3 1.1.2 North County MSCP Plan .................................................................. 3 1.1.3 Framework Management Plan and Area-Specific Management Directives .......................................................................................... 3 1.2. Implementation ........................................................................................ 3 1.2.1 Management Approach ..................................................................... 3 1.2.2 Responsible Parties/Designation of Land Manager .......................... 3 1.2.3 Regulatory Context............................................................................ 4 1.2.4 Limitations and Constraints ............................................................... 4 2.0 PROPERTY DESCRIPTION ...................................................................... 4 2.1 Legal Description ..................................................................................... 4 2.2 Geographical Setting ............................................................................... 6 2.2.1 Site Access ....................................................................................... 6 2.2.2 MSCP Context .................................................................................. 6 2.3 Physical and Climatic Conditions ............................................................. 8 2.3.1 Geology and Soils ............................................................................. 8 2.3.2 Climate ............................................................................................ 10 2.3.3 Hydrology ........................................................................................ 11 2.3.4 Fire History ...................................................................................... 11 2.4 Land Use ................................................................................................ 14 2.4.1 On-Site Land Use ............................................................................ 14 2.4.2 Adjacent Properties ......................................................................... 14 2.4.3 Easements or Rights ....................................................................... 14 2.5 Trails ...................................................................................................... 16 3.0 BIOLOGICAL RESOURCES DESCRIPTION .......................................... 18 3.1 Vegetation Communities/Habitat ........................................................... 18 3.2 Plant Species ......................................................................................... 22 3.2.1 Plant Species Present ..................................................................... 22 3.2.2 Rare, Threatened, or Endangered Plant Species Present .............. 22 3.2.3 Rare, Threatened, or Endangered Plant Species not Observed but with High Potential to Occur ............................................................ 25 3.2.4 Non-native and/or Invasive Plant Species ....................................... 27 3.3 Wildlife Species ..................................................................................... 29 3.3.1 Wildlife Species Present .................................................................. 29 3.3.2 Rare, Threatened, or Endangered Wildlife Species Present ........... 33 3.3.3 Rare, Threatened or Endangered Wildlife with High Potential to Occur ............................................................................................... 39 3.3.4 Non-native and/or Invasive Wildlife Species ................................... 40 i Sage Hill Preserve June 2010 Draft Resource Management Plan 3.4 Overall Biological and Conservation Value ............................................ 40 3.4.1 Wildlife Linkages and Corridors ....................................................... 41 4.0 CULTURAL RESOURCES ...................................................................... 41 4.1 Site History ............................................................................................. 42 4.2 Native American Consultation ................................................................ 43 4.3 Cultural Resource Descriptions ............................................................. 44 4.3.1 Prehistoric Archaeological Sites ...................................................... 44 4.3.2 Prehistoric and Historic Multi-Component Sites .............................. 45 4.3.3 Historic Sites ................................................................................... 47 4.3.4 Resources of Unknown Age ............................................................ 48 4.4 Resource Significance ........................................................................... 48 5.0 RESOURCE MANAGEMENT .................................................................. 50 5.1 Management Goals and Objectives ....................................................... 50 5.1.1 County-Specific ............................................................................... 50 5.1.2 MSCP-Related ................................................................................ 50 5.1.3 Management Directives and Implementation Measures.................. 51 5.2 Biological Resources Element (A) ......................................................... 53 5.2.1 Biological Monitoring ....................................................................... 53 5.2.2 MSCP Covered Species-Specific Monitoring and Management ..... 55 5.2.3 Non-Native Invasive Wildlife Species Control ................................. 58 5.2.4 Future Research ............................................................................. 59 5.3 Vegetation Management Element (B) ................................................... 59 5.3.1 Habitat Restoration.......................................................................... 60 5.3.2 Non-Native Plant Species Removal and Control ............................. 60 5.3.3 Fire prevention, control, and management ...................................... 61 5.4 Public Use, Trails, and Recreation Element (C) ..................................... 63 Public Access .............................................................................................. 63 5.4.2 Fencing and Gates .......................................................................... 64 5.4.3 Trail and Access Road Maintenance ............................................... 65 5.4.4 Signage and Lighting....................................................................... 66 5.5 Operations and Facility Maintenance Element (D) ................................. 67 5.5.1 Litter/Trash and Materials Storage .................................................. 67 5.5.2 Hydrological Management ............................................................... 67 5.5.3 Emergency, Safety and Police Services .......................................... 68 5.5.4 Adjacency Management Issues ...................................................... 69 5.6 Cultural Resources Element (E) ............................................................ 70 6.0 REFERENCES ......................................................................................... 73 TABLES Table 1. Mean Monthly Temperatures and Precipitation, July 1999-July 2009 .. 11 Table 2. Vegetation Communities within the Preserve ....................................... 18 Table 3. Sage Hill Preserve Cultural Sites Recommendations .......................... 49 ii Sage Hill Preserve June 2010 Draft Resource Management Plan FIGURES Figure 1. Regional Location ............................................................................. 2 Figure 2. Preserve Vicinity Map ........................................................................ 5 Figure 3. MSCP Designations and Adjacent Conserved Lands ....................... 7 Figure 4. Soils Map .......................................................................................... 9 Figure 5. Hydrology ........................................................................................ 12 Figure 6. Fire History ...................................................................................... 13 Figure 7. Trails, Fencing, Gates ..................................................................... 17 Figure 8. Vegetation Communities ................................................................. 19 Figure 9. Special Status Plant Species .......................................................... 24 Figure 10. Non-native Invasive Plant Species ................................................... 28 Figure 11. Special Status Wildlife Species ......................................................... 34 APPENDICES Appendix A Sage Hill Land Management Agreement Appendix B Baseline Biological Survey Report for the Sage Hill Preserve, County of San Diego Appendix C Cultural Resources Phase I Survey and Inventory, Sage Hill Preserve, San Diego County, California iii Sage Hill Preserve June 2010 Draft Resource Management Plan 1.0 Introduction Sage Hill Preserve (Preserve) consists of approximately