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The PlantRight PRE: A New Screening Process for Invasiveness Christiana Conser Project Scientist PlantRight, Sustainable Conservation Invasive Ornamental.

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Presentation on theme: "The PlantRight PRE: A New Screening Process for Invasiveness Christiana Conser Project Scientist PlantRight, Sustainable Conservation Invasive Ornamental."— Presentation transcript:

1 The PlantRight PRE: A New Screening Process for Invasiveness Christiana Conser Project Scientist PlantRight, Sustainable Conservation Invasive Ornamental Plant Symposium Chicago Botanic Garden, Glencoe, IL October 3, 2013

2 Economic impact of nursery and landscape industry Source: CANGC 2010 CA’s Top 20 Commodies (sales and rank values (2002-2008) CA Nursery & Floral Sales (Total and as a % of Total Ag Sales)

3 Bradley et al. 2011 Global Trade Drivers of New Plant Introductions Regional New housing starts Consumer demand Interest in novel and exotic plants Increased demand for xeriscaping Water restrictions Adaptations to climate change scenarios Technological Advances in plant breeding and propagation

4 Rate of new plant introductions Number of commercially available cultivars (1987 to 2008) Drew et al. 2010 20,000 105,000

5 48% 37% 13% Horticultural/ornamental Seed/other contaminant Dye, medicinal, forage Aquarium trade 2% Bell 2007 Historical Invasive Plant Pathways for California % of Total Invasive Plants Accidentally or Intentionally Introduced to California

6 A plant that does not naturally occur in a specific region but whose introduction causes or is likely to cause harm to the environment, economy or to human health. Photo | California Invasive Plant Council, Beth Hendrickson What is an Invasive Plant? What is not an Invasive Plant? Garden weeds Non-native ornamental plants

7 Abundant flowers Easy to propagate Grows quickly Weather/soil tolerant Resistant to pests and disease Broad germination Establish rapidly Use up limited resources Weather/soil tolerant Resistant to pests and disease Ornamental Traits Invasive Traits Photo | UC Davis Arboretum Photo | California Invasive Plant Council, Beth Hendrickson Comparison of Invasive and Ornamental Traits

8 Weed Risk Assessment Pheloung et al. 1999 49 Questions Biogeography/Historical Domestication/Cultivation Climate and Distribution Weed Elsewhere Biology/Ecology Undesirable Traits Plant Type Reproduction Dispersal Mechanisms Persistence Attributes Used in Australia & other parts of the world Photo | AQIS Australian WRA

9 Comparison of global WRA model accuracy All WRA’s have low accuracy for non-invasive plants Weed Risk Assessment

10 Revised Q37 (NAPPRA-Not allow pending risk assessment) All nursery stock requires a pre-import risk analysis Evaluate the ability of a species to spread outside cultivation APHIS WRA modeled from Australia’s WRA Impact on imports for nursery industry unknown USDA-APHIS-PPQ Koop et al. 2011 Weed Risk Assessment

11 High accuracy for non-invasive plants Predict regional invasiveness Screen sterile and non-sterile cultivars Screen plants early in the R&D process Rapid screenings, quick results Provide real-time risk assessment for invasiveness Updated with new information as it becomes available WRA adapted for screening ornamental plants PlantRight Plant Risk Evaluation (PRE) Photo | UC Davis Arboretum

12 Taxonomy Cultivar names Invasive history in CA, US, world Climate suitability for CA Difficulty of control Negative environmental impacts Reproductive strategies Dispersal Growth rate Types of screening questions Photo | UC Davis Arboretum PlantRight Plant Risk Evaluation (PRE)

13 Screening Procedure & Data Collection Protocol adapted from Gordon et al. 2010 PlantRight Plant Risk Evaluation (PRE)

14 PlantRight PRE Scoring Invasive>19 Non-invasive<14 Evaluate Further=15-18 PlantRight Plant Risk Evaluation (PRE)

15 Non-Invasive Invasive PlantRight PRE had high accuracy for non-invasive plants PlantRight Plant Risk Evaluation (PRE) Comparison with Australian WRA model

16 PlantRight PRE has highest accuracy for non-invasive plants Comparison with other WRA models PlantRight Plant Risk Evaluation (PRE)

17 Protocol adapted from Gordon et al. 2010 PRE (Plant Risk Evaluation) TOOL

18 Invasive>19 Non-invasive<14 Evaluate Further=15-18 PRE (Plant Risk Evaluation) TOOL

19 Taxonomy Cultivar names Invasive history Climate suitability Difficulty of control Negative environmental impacts Reproductive strategies Dispersal Growth rate PRE (Plant Risk Evaluation) TOOL

20 O PPORTUNITIES | B ENEFICIAL I NFO Current taxonomy and synonyms Ornamental and cultivation history, medicinal uses, etc. Native range and regional climatic suitability information

21 O PPORTUNITIES | B ENEFICIAL I NFO Growth, reproduction and dispersal characteristics Ecological information re: garden suitability Patent information

22 + Add Climate Modeling To Evaluate the Regional Suitability of Plants PlantRight Plant Risk Evaluation (PRE)

23 Develop a Web-Based Tool and Database MS-Excel Web-accessible database Plant Breeders Arboreta Botanical Gardens Retail Nurseries Plant Buyers Propagators Growers Plant Prospectors PlantRight PRE PlantRight Plant Risk Evaluation (PRE)

24 Develop Rapid Screening (RS) Tool Screen most common plants in ornamental trade Water Use Classification of Ornamental Landscape Species (WUCOLS) PlantRight Pre-PRE rapid screening tool PlantRight Plant Risk Evaluation (PRE)

25 Christiana Conser PlantRight Project Scientist Sustainable Conservation cconser@ucdavis.edu www.PlantRight.o rg

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