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Integrating invasive species policies across ornamental horticulture supply-chains to prevent plant invasions

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Author(s)

  • Philip E. Hulme
  • Giuseppe Brundu
  • Marta Carboni
  • Katharina Dehnen-Schmutz
  • Regan Early
  • Stefan Dullinger
  • Franz Essl
  • Pablo González-Moreno
  • Quentin J. Groom
  • Christoph Kueffer
  • Ingolf Kühn
  • Noëlie Maurel
  • Ana Novoa
  • Jan Pergl
  • Petr Pyšek
  • Hanno Seebens
  • Rob Tanner
  • Julia M. Touza
  • Mark van Kleunen
  • Laura N H Verbrugge

Department/unit(s)

Publication details

JournalJournal of Applied Ecology
DateAccepted/In press - 15 May 2017
DateE-pub ahead of print (current) - 13 Jun 2017
Number of pages24
Pages (from-to)1-24
Early online date13/06/17
Original languageEnglish

Abstract

1. Ornamental horticulture is the primary pathway for invasive alien plant introductions. We critically appraise published evidence on the effectiveness of four policy instruments that tackle invasions along the horticulture supply-chain: pre-border import restrictions, post-border bans, industry codes of conduct, and consumer education.
2. Effective pre-border interventions rely on rigorous risk assessment and high industry compliance. Post-border sales bans become progressively less effective when alien species become widespread in a region.
3. A lack of independent performance evaluation and of public disclosure, limits the uptake and effectiveness of voluntary codes of conduct and discourages shifts in consumer preference away from invasive alien species.
4. Policy implications. Closing the plant invasion pathway associated with ornamental horticulture requires government-industry agreements to fund effective pre- and post-border weed-risk assessments that can be subsequently supported by widely adopted, as well as verifiable, industry codes of conduct. This will ensure producers and consumers make informed choices in the face of better targeted public education addressing plant invasions.

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© 2017 John Wiley & Sons, Inc. All Rights Reserved. This is an author-produced version of the published paper. Uploaded in accordance with the publisher’s self-archiving policy. Further copying may not be permitted; contact the publisher for details.

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