Sudden Oak Death and Phytophthora ramorum Marin County, CA June 2000 Distribution of Phytophthora ramorum Humboldt Map from www.suddenoakdeath.org M. Kelly, UC-Berkeley Big Sur Oaks Quercus agrifolia Q. kellogii Q. parvula var. shrevei Q. chrysolepis Tanoak Notholithocarpus densiflorus Big Sur S. Frankel Rhododendron Rhododendron Bigleaf maple Redwood Maidenhair fern Bay laurel Known Host Range of Phytophthora ramorum Andrew's clintonia bead lily False Solomon’s seal Planetree maple Sweet chestnut Ardisia Formosa firethorn Poison oak Sweet Cicely Bigleaf maple Fetterbush Port-Orford cedar Sweet olive Blueblossom Goat willow Portuguese laurel Tanoak California bay laurel Grand fir cherry Toyon California black oak Griselinia Red fir Viburnum varieties California buckeye Victorian box Holly olive Red tip photinia California coffeeberry Vine maple Redwood ivy California hazelnut Holm oak Western hemlock Rhododendron California honeysuckle Horse chestnut Western maidenhair species California maidenhair fern Hybrid witchhazel fern Roble beech California nutmeg Japanese evergreen oak Western starflower California wood fern Japanese larch Rugosa rose White fir Camellia species Laurustinus Salal Winter's bark Camphor tree Lilac Salmonberry Witch hazel Canyon live oak Madrone Scotch heather Wood rose Cascara Magnolia varieties Sessile oak Yew Chinese witchhazel Sheep laurel Coast live oak Manzanita Shreve oak Coast redwood Michelia Southern red oak Douglas fir Mountain laurel Drooping leucothoe Northern red oak Spicebush European ash Oleander Spreading euonymus European beech Oregon ash Star magnolia European turkey oak Osmanthus Strawberry tree European yew Pacific yew Striped bark maple Evergreen huckleberry Persian ironwood Sweet bay laurel Evergreen maple Pieris varieties Phytophthora ramorum Redwood forest Mixed-evergreen forest X Tanoak Distribution of Phytophthora ramorum Humboldt Map from www.suddenoakdeath.org M. Kelly, UC-Berkeley Big Sur Risk Models Establishment and spread risk Meentemeyer et al., 2004 Establishment and spread risk Stake Holders • Homeowners/Landowners • Arborists • Nursery industry • Green waste industry • Timber industry • Specialty industries (bay leaves, burls) • Native American Tribes • Land Trusts, Preserves • Public land managers (Local, State, National) Marin County Fungicides Spray Treatment Injection Treatments Marin County Janet Klein, MMWD Big Sur Sonoma County Forest structure Wildlife Fire Before After Large Management Efforts Redwood Valley (UCCE, UC Davis, USDA FS, BLM, Yurok, Hoopa, Private landowners): - Slow the spread - Impact management S. Humboldt, Mendocino, and N. Sonoma (UCCE, CAL Fire, Phytosphere, Fire Safe Sonoma): - Hot spot approach/Slow the spread - Tanoak survival - Fuel/impact management Greater Bay Area (UC Berkeley, Phytosphere): - Impact management - Slow the spread - Agri-fos trials - Tanoak/oak survival Big Sur (USDA FS, UC Davis, UC Berkeley): - Fire planning - Agri-fos trials - Tanoak survival APHIS website: www.aphis.usda.gov/plant_health/plant_pest_info/pram/index.shtml SOD-Blitz • Education on biology and epidemiology • Create a community-based active disease management approach • Training sessions to allow homeowners to implement active disease management http://nature.berkeley.edu/garbelotto • Provide disease distribution information for decision- making and research SOD Map Big Sur K. Frangioso .