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The Global Invasive Species Team | |
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Global Invasive Species Team listserve digest #105 Wed Jun 05 2002 - 10:13:03 PDT --CONTENTS-- 1. Economic impacts of terrestrial aquatics (Wisconsin, USA) 2. Russian Olive Control (Colorado, USA) 3. Imperata cylindrica (California, USA) 4. Conservation easements and invaders (Nationwide, USA) --------------------------------------- 1. Economic impacts of terrestrial aquatics (Wisconsin, USA) From: Susan Lehnhardt (susan(at)appliedeco.com) Regarding the query on economic impacts of invasive aquatics in Listserve Digest #104---Has anyone completed or proposed to conduct a similar study for economic impacts of terrestrial species? --------------------------------------- 2. Russian Olive Control (Colorado, USA) From: Brian Mihlbachler (brian.mihlbachler(at)usafa.af.mil) I am planning on controlling large Russian olive trees (Eleaegnus angustifolia) by cutting the stump, then immediately treating the cambium with 5-10 cc of straight Roundup. The questions has been asked, could the tree stumps be cut 2-3 feet high, left for a few days, then recut at ground level just before applying the herbicide? I am wondering if this might decrease the effectiveness of the chemical? --------------------------------------- 3. Imperata cylindrica (California, USA) From: Barry Rice (bamrice(at)ucdavis.edu) Imperata cylindrica 'Red Baron' is a frequently sold, supposedly non-invasive cultivar of cogongrass. I have heard from at least one person that this plant can produce seed, and the seedlings can have the usual, agressive characters that make the "wild form" of the species such a problem. Has anyone else seen this behavior in Imperata cylindrica 'Red Baron'? --------------------------------------- 4. Conservation easements and invaders (Nationwide, USA) From: John Randall (jarandall(at)ucdavis.edu) At the request of TNC employee Roberta Vallone I am looking for examples of conservation easements that restrict the use of certain invasive plants and/or require that certain species be controlled. If you know of any please send me a copy or let me know who I should contact to learn more. We may post a summary of good examples on our website, of course following consultation with legal folks to make sure that we do not include any information that is confidential or sensitive for the landowners or easement holders involved. |
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