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Improving Environmental T echniques of Controlling I nvasive W eeds

Improving Environmental T echniques of Controlling I nvasive W eeds. Alan Siergiej ENV 340 04/17/14. Biocontrol - What is it?. Controlling of invasive species using its natural enemy Often a last resort Becoming a better choice, not the only choice. Knowing the Difference.

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Improving Environmental T echniques of Controlling I nvasive W eeds

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  1. Improving Environmental Techniques of Controlling Invasive Weeds Alan Siergiej ENV 340 04/17/14

  2. Biocontrol- What is it? • Controlling of invasive species using its natural enemy • Often a last resort • Becoming a better choice, not the only choice

  3. Knowing the Difference • Invasive Species: • Negative and Aggressive • Extinction or Local Extinction • Unhealthy Ecosystem • Alien Species: • Neutral or Positive • Diversify • Maintain or Improve Ecosystem

  4. How Does it Work? • Become familiar with the invader • Learn about its natural enemies • Research and experiment • Release • Continue to observe

  5. The Goal of Biocontrol

  6. The Risks Involved • Costly • Long-term benefits • Time consuming • Not if started initially • Backfiring • Not if done properly

  7. Other Options • Pesticides: • Super-Weeds • Environmental damage • Damaging other organisms • Fires: • Backfire • Damage other organisms • Harm to local population • Manually: • Time consuming • Damaging other organisms • Environmental damage

  8. Future Research • Speeding up research times • Finding more cost effective ways • Prevention

  9. Conclusion • Has Its risks • Benefits out-weigh the risks • Not the only choice, but the first choice • Research, research, and more research!

  10. References: • Biocontrol of Icerya with Rodolia in the Galapagos [Internet]. [Updated 2013 Jan 11]. Regents of the University of California; [cited 2014 April 14]. Available from : http://biocontrol.ucr.edu/rodolia/rodolia_icerya_biocontrol_galapagos.html • Biological control of weeds [Internet]. [Updated 2013 Feb 01]. CSIRO; [cited 2014 April 14]. Available from: http://www.csiro.au/Outcomes/Food-and-Agriculture/WeedBiocontrol.aspx • Davis M A, Chew M K, Hobbs R J, Lugo A E, Ewel J J, Vermeij G J, Brown J H, RosenzweigM L, Gardener M R, Carroll S P, Thompson K, Pickett S P C, Stromberg J C, Tredici P D, Suding K N, Ehrenfeld J G, Grime J P, Mascaro J, and Briggs J C. 2011. Don’t judge species on their origins. Nature, 474: 153-154 • Hultine K R, Belnap J, van Riper III C, Ehleringer J R, Dennison P E, Lee M E, & West J B. 2010. Tamarisk biocontrol in the western United States: ecological and societal implications. Frontiers In Ecology & The Environment, 8(9): 467-474.

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