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Hawaiian Ecosystems at Risk project (HEAR) International Weed Risk Assessment Workshop

This page was created to disseminate information about the International Weed Risk Assessment Workshops, and to disseminate information generated during workshop sessions. More information will be added to this site as it becomes available.
Workshops Book (Proceedings) Papers presented E-mail list Discussion papers Workshop writeups Info resources


2nd International Weed Risk Assessment Workshop

IWRAW2 presentations [New!] are now available online. These presentations were presented at the 2nd International Weed Risk Assessment Workshop held in Perth (WA), Australia, 14-15 September 2007 in conjunction with the 9th International Conference on the Ecology and Management of Alien Plant Invasions (EMAPI9).

1st International Weed Risk Assessment Workshop

The 1st International Weed Risk Assessment Workshop was held in Adelaide, Australia, 15-18 February 1999.

The program for this workshop PDF icon is now available online.

Adelaide, Australia

BOOK now available!

A book entitled Weed Risk Assessment has been produced as the "proceedings" of the first International Weed Risk Assessment Workshop (1999, Adelaide) based on papers and presentations from workshop. The book was edited by R.H. Groves, F.D. Panetta, and J.G. Virtue and published in 2001 (ISBN=0-643-06561-X). Ordering information is available at the CSIRO Publishing's web page for this book.

 [New!]  Also available online:

Weed Risk Assessment book cover

Papers presented at the (1999) 1st International Weed Risk Assessment Workshop (online full text)

Below are texts of documents presented at the 1st International Weed Risk Assessment Workshop (held in Adelaide, Australia, February 1999).

Weed Risk Assessment and Prevention in Hawaii: Status and Practicalities  PDF icon
           Philip A. Thomas, Hawaiian Ecosystems at Risk project [HEAR], USGS/BRD Haleakala Field Station, Maui, Hawaii USA
    Few efforts at weed risk assessment in Hawaii have been undertaken; several of those efforts are described here, and their degrees of success discussed. A number of federal, state, private, and multi-agency organizations have interests in the negative effects of alien species invasions in Hawaii, and may benefit from better weed risk assessment protocols. Weed risk assessment is discussed with respect to its applicability in Hawaii. Economic, political, and other practical aspects of alien species problems are addressed. Finally, issues are addressed which are deemed necessary to progress in the battle against problems caused by invasive alien species in Hawaii. (Philip A. Thomas, Hawaiian Ecosystems at Risk project [HEAR], submitted 18 January 1999 to the 1st International Workshop on Weed Risk Assessment, Adelaide, Australia.)
Invasive plant problems and requirements for weed risk assessment in the Galapagos islands  PDF icon 
           Alan Tye, Department of Plant and Invertebrate Sciences, Charles Darwin Research Station, Isla Santa Cruz, Galapagos, Ecuador
    Galapagos is a young oceanic archipelago with a native vascular flora of 560 species, few native trees, and an absence of many families present on the neighbouring mainland. It has only recently become subject to human influence. Plants introduced by man have only become problematic in the last 150 years, with most weed problems being less than 50 years old. The rise in plant introductions parallels the human population increase, with a recent introduction rate of 10 plant species per year, 100,000 times the natural colonization rate. Invasive plants include weeds and cultivated species, which cause detrimental effects on agriculture as well as natural habitats. Introduced species are the principal threat to the Galapagos ecosystem, and several species of alien plant are seriously damaging native habitats and threatening endemic species. Examples of some of the worst invaders and of the process and effects of invasions are presented. A weed risk assessment system for Galapagos must take account of the particular requirements of a fragile oceanic island ecosystem and flora. It must include consideration of potential invaders as well as plants already introduced. Factors that need to be included in an objective risk assessment system for Galapagos are discussed in light of the New Zealand Department of Conservation's model.

Can't find the one you're looking for? (Request a particular paper to be posted online.)

Internet e-mail list

There is now an internet e-mail list for discussion of matters relating to the International Weed Risk Assessment Workshops (IWRAW). The purpose of this list is to facilitate discussion and information exchange among attendees of (and other parties interested in the proceedings of) IWRAW. (Un)subscription details are available online at http://www.hear.org/hear/hearlists.htm#IWRAW-L.

Discussion Papers

1999 Workshop discussion paper

Discussion Paper: International Workshop on Weed Risk Assessment for Quarantine and Coordinated Control (John Virtue, Dane Panetta, John Randall and Tom Parnell)

Information in this paper was used as the basis for discussions at the 1st International Weed Risk Assessment Workshop (held in Adelaide, Australia, February 1999).

Workshop Writeups

Below are workshop writeups from the 1st International Weed Risk Assessment Workshop (held in Adelaide, Australia, February 1999).

Information Resources for Weed Risk Assessment

IWRAW now maintains a page of Information Resources for Weed Risk Assessment.  [New!]  See also the Hawaiian Ecosystems at Risk (HEAR) project's weed risk assessment info page.

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This page is a product of the Hawaii Ecosystems at Risk Project. This page was created on 10 March 1999 by PT, and was last updated on 25 May 2007 by PT.