Études de cas sur la gestion
A biological control programme for Hydrilla verticillata was undertaken simultaneously with programmes for the other aquatic invaders Eichhornia crassipes, Pistia stratiodes and Salvinia molesta, to avoid the increase of other invasive species as one was controlled.
Hydrilla verticillata has been controlled in canals with a combination of herbicides and grass carp (Ctenopharyngodon idella). However, its decline has coincided with the increase of the equally invasive Hygrophila polysperma.
Ressources pour la gestion/Liens
4. Champion, P.D.; Clayton, J.S. 2001. Border control for potential aquatic weeds. Stage 2. Weed risk assessment. Science for Conservation 185. 30 p.
Résumé: This report is the second stage in the development of a Border Control Programme for aquatic plants that have the potential to become ecological weeds in New Zealand. Importers and traders in aquatic plants were surveyed to identify the plant species known or likely to be present in New Zealand. The Aquatic Plant Weed Risk Assessment Model was used to help assess the level of risk posed by these species. The report presents evidence of the various entry pathways and considers the impact that new invasive aquatic weed species may have on vulnerable native aquatic species and communities.
Available from: http://www.doc.govt.nz/upload/documents/science-and-technical/SFC185.pdf [Accessed 13 June 2007]
6. Effects of Grass Carp on the Aquatic
Vegetation in Lake Conway, Florida
Leslie J Andrew., et al.
Florida Department of Environmental Protection
7. Gee II, David E., pers. comm. 2006. Wildlife Biologist, Guam Division of Aquatic & Wildlife Resources and Guam team member of the Pacific Invasives Learning Network (PILN).
9. National Pest Plant Accord, 2001. Biosecurity New Zealand.
Résumé: The National Pest Plant Accord is a cooperative agreement between regional councils and government departments with biosecurity responsibilities. Under the accord, regional councils will undertake surveillance to prevent the commercial sale and/or distribution of an agreed list of pest plants.
Available from: http://www.biosecurity.govt.nz/pests-diseases/plants/accord.htm [Accessed 11 August 2005]
10. New Zealand Plant Conservation Network, 2005. Unwanted Organisms. Factsheet Hydrilla verticillata
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