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 Water Hyacinth  Hydrilla  Eurasian Watermilfoil  Giant Salvinia  Brazilian Elodea  Arundo  Spongeplant.

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Presentation on theme: " Water Hyacinth  Hydrilla  Eurasian Watermilfoil  Giant Salvinia  Brazilian Elodea  Arundo  Spongeplant."— Presentation transcript:


2  Water Hyacinth  Hydrilla  Eurasian Watermilfoil  Giant Salvinia  Brazilian Elodea  Arundo  Spongeplant

3  Clog lakes & waterways  Interferes with commerce and recreation  Displace native plants  Clogs water diversions and pumps  Depletes dissolved oxygen levels  Increase sedimentation  Can cause flooding

4  Many seeds & small seedlings move easily.  Spongeplant mixed with duckweed. Red circles show spongeplant seedlings.  Seeds survive at least three years.

5  It chokes out everything.  2003 first California infestation found in Redding and Arcata.  Out competes several other aggressive water weeds, like water primrose and parrots feather


7 2003: First records were in Arcata and Redding. 2007: San Joaquin River in Fresno. Antioch in Sacramento River, but seemed to disappear after a storm. 2008: Found in a canal off the Kings River east of Fresno and canals in western Fresno County & 2010, it was again found in the Delta.

8 To report plants or find out about surveys: Patrick Akers at Left: Spongeplant in a canal in western Fresno County. Right: The same canal two weeks after treatment. Spongeplant spreads easily but it is relatively easy to control, if it hasn’t had time to make a lot of seeds. But maybe we can beat it. HELP THE EFFORT! The California Department of Food and Agriculture will be surveying in 2011 to find out how much spongeplant has spread. You can help by reporting finds or having your stream, pond, or canals checked. And thanks. For more information: Before treatmentAfter treatment

9  Asian Clam  Chinese Mitten Crab  New Zealand Mudsnail  Florida Watersnake (Nerodia)  Asian Carp

10  Introduced in 1800’s for human consumption  High densities, out-competes native clams  Impairs water delivery systems by clogging pipes, valves and sprinklers  Traps sediment, forms bars in agriculture canals, alters flow  Bioaccumulation of toxins

11  Intentional releases for human consumption and/or via ballast water  Clog fish salvage facilities  Create losses for fisheries  Reduced catch  Damages fishing nets  Threatens levee stability  Potential host for human lung fluke

12  From New Zealand  750,000 NZMS per square meter  Competes for space and food  Ties up nutrients – not digestible by most fish or birds, shell takes a long time to decompose  Shells block pipes, filters and grates Ken Davis Distribution of the New Zealand mudsnail in California.

13  Native to southeastern US  Threat to CA native and federally listed giant garter snake ( Thamnophis gigas )

14  Reach extremely high population densities  Impact populations of native mussels and snails (black carp)  Potentially deplete zooplankton populations (silver and bighead)

15 Alligatorweed (Alternanthera philoxeroides) Brazilian Waterweed (Egeria densa) Caulerpa, Mediterranean Clone (Caulerpa taxifolia) Common Reed (Phragmites australis) Eurasian Watermilfoil (Myriophyllum spicatum) Didymo (Didymosphenia geminata) Giant Reed (Arundo donax) Giant Salvinia (Salvinia molesta) Hydrilla (Hydrilla verticillata) Melaleuca (Melaleuca quinquenervia) Purple Loosestrife (Lythrum salicaria) Water Chestnut (Trapa natans) Water Hyacinth (Eichhornia crassipes) Water Lettuce (Pistia stratiotes) Water Spinach (Ipomoea aquatica) Alewife (Alosa pseudoharengus) Asian Carps Asian Swamp Eel (Monopterus albus) Bullfrog (Rana catesbeiana) Chinese Mitten Crab (Eriocheir sinensis) Clubbed Tunicate (Styela clava) New(Jun 16, 2009) Eurasian Ruffe (Gymnocephalus cernuus) European Green Crab (Carcinus maenas) Flathead Catfish (Pylodictus olivaris) Lionfish (Pterois volitans) Northern Snakehead (Channa argus) New Zealand Mud Snail (Potamopyrgus antipodarum) Nutria (Myocastor coypus) Quagga Mussel (Dreissena bugensis) Round Goby (Neogobius melanostomus) Rusty Crayfish (Orconectes rusticus) Sea Lamprey (Petromyzon marinus) Sea Squirt (Didemnum vexillum) Spiny Water Flea (Bythotrephes longimanus) Veined Rapa Whelk (Rapana venosa) Zebra Mussel (Dreissena polymorpha) Air Potato (Dioscorea bulbifera) New(May 26, 2009) Autumn Olive (Elaeagnus umbellata) Beach Vitex (Vitex rotundifolia) Common Teasel (Dipsacus fullonum) Dalmatian Toadflax (Linaria dalmatica) Diffuse Knapweed (Centaurea diffusa) Downy Brome (Bromus tectorum) Fig Buttercup (Ranunculus ficaria) Garlic Mustard (Alliaria petiolata) Giant Hogweed (Heracleum mantegazzianum) Hairy Whitetop (Lepidium appelianum) Houndstongue (Cynoglossum officinale) Japanese Stilt Grass (Microstegium vimineum) Japanese World Climbing Fern (Lygodium japonicum) Japanese Honeysuckle (Lonicera japonica) Japanese Knotweed (Fallopia japonica) Japanese Spiraea (Spiraea japonica) New(Jun 25, 2009) Johnsongrass (Sorghum halepense) Kudzu (Pueraria montana var. lobata) Leafy Spurge (Euphorbia esula) Medusahead (Taeniatherum caput-medusae) Mile-A-Minute Weed (Persicaria perfoliata) Multiflora Rose (Rosa multiflora) Musk Thistle (Carduus nutans) Old Russian Olive (Elaeagnus angustifolia) Saltcedar (Tamarix spp.) St. Johnswort (Hypericum perforatum) Scotch Broom (Cytisus scoparius) Scotch Thistle (Onopordum acanthium) Spotted Knapweed (Centaurea stoebe) Tree-of-Heaven (Ailanthus altissima) Tropical Soda Apple (Solanum viarum) Whitetop (Lepidium draba) Witchweed (Striga asiatica) New(Apr 9, 2009) Yellow Star Thistle (Centaurea solstitialis) Yellow Toadflax (Linaria vulgaris) Africanized Honeybee (Apis mellifera scutellata) Asian Citrus Psyllid (Diaphorina citri) Asian Long-Horned Beetle (Anoplophora glabripennis) Asian Tiger Mosquito (Aedes albopictus) Cactus Moth (Cactoblastis cactorum) Chillip Thrips (Scirtothrips dorsalis) New(Jul 30, 2009) Citrus Longhorned Beetle (Anoplophora chinensis) Emerald Ash Borer (Agrilus planipennis) European Gypsy Moth (Lymantria dispar) European Spruce Bark Beetle (Ips typographus) Formosan Subterranean Termite (Coptotermes formosanus) Giant African Snail (Achatina fulica) Glassy-Winged Sharpshooter (Homalodisca coagulata) Hemlock Woolly Adelgid (Adelges tsugae) Light Brown Apple Moth (Epiphyas postvittana) Mediterranean Fruit Fly (Ceratitis capitata) Mexican Fruit Fly (Anastrepha ludens) Pink Hibiscus Mealybug (Maconellicoccus hirsutus) Red Imported Fire Ant (Solenopsis invicta) Russian Wheat Aphid (Diuraphis noxia) Silverleaf Whitefly (Bemisia argentifolii) Sirex Woodwasp (Sirex noctilio) Soybean Cyst Nematode (Heterodera glycines) Brown Tree Snake (Boiga irregularis) Cane Toad (Bufo marinus) European Starling (Sturnus vulgaris) Wild Boar (Sus scrofa) Avian Influenza (Orthomyxoviridae) Exotic Newcastle Disease (Paramyxovirus) Fowlpox (Avipoxvirus) Viral Hemorrhagic Septicemia (Novirhabdovirus) West Nile Virus (Flavivirus) Whirling Disease (Myxobolus cerebralis) Citrus Canker (Xanthomonas axonopodis) Citrus Greening (Liberibacter asiaticus) Dogwood Anthracnose (Discula destructiva) Gladiolus Rust (Uromyces transversalis) (Jun 11, 2009) Late Blight (Phytophthora infestans) (Jul 9, 2009) Laurel Wilt (Raffaelea lauricola) (Aug 13, 2009) Plum Pox (Potyviruses: Potyviridae) Southern Bacterial Wilt (Ralstonia solanacearum) Soybean Rust (Phakopsora meibomiae) Sudden Oak Death (Phytophthora ramorum) White Pine Blister Rust (Cronartium ribicola) Brazilian Peppertree (Schinus terebinthifolius) Canada Thistle (Cirsium arvense) Chinese Tallow (Triadica sebifera) Cogongrass (Imperata cylindrica)


17  Aquaria  Aquaculture  Ballast  Intentional Stocking  Recreational  Environmental  Food (seafood)  Gardening

18  Invasive Species Monitoring  Fisheries Surveys  Water Monitoring  Terrestrial Surveys  Restoration

19 IInvasive Species Monitoring FFisheries Surveys WWater Monitoring TTerrestrial Surveys RRestoration

20  Decontamination  Hazard Analysis and Critical Control Point Planning

21  Tool that manages the risk of moving non-targets  Risk assessment of potential pathways

22  Risk assessment determines the likelihood of moving species to an area where they may become invasive.  This process assumes that the impact of any invasive species introduction is significant

23  Once it is determined that a pathway poses a significant risk, then a plan is implemented to reduce this risk.  Utilize the HACCP planning process framework.

24  Easy five step tool  Defines the critical point in a given activity whereby the risk of a hazard can be reduced to an acceptable level.  The risk of a hazard is reduced by means of a control measure.  This control measure is then evaluated

25  Decontaminate after each survey.


27 MMethods: DDrying CChemical SSparquat, Bleach, Quat, Virkon, 409 Degreaser, Vinegar… FFreezing WWater WWater pressure HHot water rrinsing

28  Methods:  Drying  Chemical (Soak or Spray and Brush)  Sparquat, Bleach, Quat, Virkon, 409 Degreaser, Vinegar…  Freezing  Water  Water pressure  Hot water  rinsing


30 $#&*! Contact us if you’d like to set up an HACCP workshop Jonathan Thompson


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