Geography 2011A/B Lecture Notes - Lecture 14: Red Tide, Zebra Mussel, Algal Bloom

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5 May 2018

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Invasion of Asian Carp - Menace or Meal?

Asian Carp

- Adapt

- Disrupt the ecosystem

- Voracious

- Reproduce rapidly and interbreed

- Lifespan of decades

- Outcompetes for food

- Move quickly

- Asian Carp = Shared threat of U.S. and Canada

- Sea Lamprey

- Asia Carp  algae bloom

- Zebra Mussel  toxic algae bloom

Control Mechanisms? (no single solution)

- Prevention b/c removal is impossible

- electrified barrier 50 km south of Lake Michigan

- close the Chicago Canal

- plugging key points (biggest risk)

- prevention = never ending task

- monitoring (so we can act before the invasion happens)

- ex. early detection environmental DNA

- Water gun (sound sensitivity) to push away carp from spawning ground

- Poisoning water bodies

- Magic pill (microparticle w/control agent to affect only carp) $billions$

- Food attractants to limit movement

- All Canadian waters are at risk of the Asian Carp invasion. Lake Erie is particularly at risk (most

eutrophic).

- 10 males + 10 females = population

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