Notes
Slide Show
Outline
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Volunteer Monitoring for Zebra Mussels
in the Western United States
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"Background"
  • Background
    • Biology
    • Dispersal
    • Distribution
  • Impacts
    • Ecosystem
    • Economic
  • Education
    • Monitoring
      program
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"Freshwater bivalve"
  • Freshwater bivalve
  • Alternating light and dark bands
  • Average shell
    length 1.5 cm
    (up to 6 cm)
  • Attach to hard
    substrates
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"Mature female can produce up..."
  • Mature female can produce up to 1 million eggs per year
  • Spawning peaks at ~20ºC (68ºF)
  • Veligers settle after 2 to 4 weeks
  • Grow in clusters in water 1-30 m deep
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Volunteer Monitoring for Zebra Mussels
Ecosystem Impacts
  • Filter feeders
    • Reduce phytoplankton
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Volunteer Monitoring for Zebra Mussels
Ecosystem Impacts
  • Filter feeders
    • increase transparency
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Volunteer Monitoring for Zebra Mussels
Ecosystem Impacts
  • Compete with native organisms
    • Cannot move, open or close shells, or feed
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