Vegetation Management and Maintenance Plan - Watsonville ...

TABLE OF CONTENTS
1.0 INTRODUCTION
1.1 Study Methodology 1
2.0 INTRODUCTION TO WEEDS
2.1 State Noxious Weeds and Threats 7
2.2 Cal-IPC Invasive Plants and Threats 8
2.3 Problems for Trail Maintenance and Land Stewardship 8
2.4 Invasive Weeds Within the VMMM Project Area 8
3.0 INVASIVE WEED MANAGEMENT
3.1 Invasive Weed Control Techniques 14
3.2 Priority Treatment Areas 29
3.3 Implementation Schedule and Adaptive Management 31
4.0 RIPARIAN AND WETLAND MITIGATION/RESTORATION AREA
MAINTENANCE
4.1 Riparian and Wetland Mitigation and Restoration Sites 39
4.2 Maintenance Activities 41
TABLES
1. Ratings and Guidelines for Action for California Noxious Weeds 7
2. Categories of Invasive Plants, California Invasive Plant Inventory 8
3. Invasive Weeds of Management Concern 10
4. Levels of Invasive Weed Infestations and Potential Control Techniques 21
5. Typical Flowering Period of Invasive Weeds 27
6. Plant Species Suitable for Revegetation within VMMM Project Area 28
7. Invasive Weed Treatment – Yearly Implementation Schedule 32
8. Upper Struve Slough Mitigation Plantings 39
9. Upper Watsonville Slough Mitigation Plantings 40
10. Middle Watsonville Slough Restoration Plantings 40
11. Lower Struve Slough Mitigation Plantings 40
FIGURES
1. Watsonville Slough Trails – Project Area 3
2. Vegetation Types, 1 of 3 4
3. Vegetation Types, 2 of 3 5
4. Vegetation Types, 3 of 3 6
5. Distribution of Invasive Weeds, 1 of 3 11
6. Distribution of Invasive Weeds, 2 of 3 12
7. Distribution of Invasive Weeds, 3 of 3 13
8. Priority Treatment Areas, 1 of 3 36
9. Priority Treatment Areas, 2 of 3 37
10. Priority Treatment Areas, 3 of 3 38
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Vegetation Management and Maintenance Manual
Draft i July 27, 2007