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Eurasian Water Milfoil

TitleEurasian Water Milfoil
Author/CreatorCobourn, John; Purdy, Shelly; Segale, Heather M.
Related item(s)Press Release available at
Date Original2005-06-02
Summary/DescriptionLake Tahoe Report Segment #124: Eurasian Water Milfoil (Air Date: July 5, 2005). Lars Anderson from the USDA discusses the spread of the non-native Eurasian Water Milfoil in Lake Tahoe.
SubjectEurasian watermilfoil -- Control -- Tahoe, Lake, Region (Calif. and Nev.)
LocationLake Tahoe (Calif. and Nev.)
Tahoe, Lake (Calif and Nev)
CollectionThe Lake Tahoe Report
Original PublisherLake Tahoe Environmental Education Coalition (
Electronic PublisherUniversity of Nevada, Reno - Department of Teaching and Learning Technologies
Ordering and Permissions InformationFor more information, contact the University of Nevada Cooperative Extension, or 775-832-4138.
Date Digital2006-02-15
RelationRequires Windows Media Player
Resource TypeMoving Image
Contributing InstitutionUniversity of Nevada, Reno
TranscriptionSegment A124: Eurasian Water Milfoil Air Date: July 5, 2005 Suggested Tease: An invasive water plant called the Eurasian Water Milfoil has taken root in Lake Tahoe and is spreading rapidly. Shelly Purdy takes a look at the effect this non-native plant is having in tonight's Lake Tahoe Report. Anchor Intro: As it's name suggests, the Eurasian Water Milfoil comes from Europe and Asia. The plant can now be found in just about every marina at Lake Tahoe. In tonight's Lake Tahoe Report, Shelly Purdy takes a look at why the spread of this non-native species is cause for concern. ((TAKE PKG)) ((Track 1)) Researchers believe Eurasian Water Milfoil was introduced to Lake Tahoe at the Tahoe Keys…probably brought here unwittingly by a boater. Pieces of the plant get caught in propellers, and those pieces fall off and grow into new plants. That's what's happened at the Tahoe Keys. The infestation here is so bad the local homeowner's association actually has to mow the plant to keep the waterways open. With how easily Eurasian Water Milfoil spreads, is no surprise the plant can now be found throughout the lake and can easily be spotted at other Tahoe marinas. ((sot @ 1:01 Lars Anderson, PhD, U.S. Department of Agriculture)) "We've watched the EWM spread from the keys to probably a dozen different locations small marinas- in the lake. So, we're concerned about it's continuous spread and the fact that we really can't do anything about it at this point." ((Track 2)) Eurasian Water Milfoil has no native competition in Lake Tahoe. The plant loves cold water and easily spreads. It gets so dense that it pushes out the native species of plants. And that is causing great concern among researchers here at Tahoe. ((Sot @ 3:13)) "The reason that's important is those native plants have certain characteristics for water fowl and fish habitat. And once this plant takes over those habitats can really change. So it can really reduce habitat for native waterfowl and fish that we have." ((track 3)) To help combat further spread of the plant and to keep it from being taken from Tahoe into other waterways… new warning signs are being put up at Lake Tahoe marinas to warn boaters. They're asking boaters to clean the plant parts off their boats before entering or exiting the lake. With the Lake Tahoe Environmental Education Coalition, I'm Shelly Purdy for KOLO News channel 8. Anchor Tag: If the rapid spread with Eurasian Water Milfoil wasn't bad enough, researchers recently discovered another invasive non-native plant at Lake Tahoe. The Curly Leaf Pond Weed likes the same type of habitat as the Water Milfoil…and is actually spreading faster.

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