I am a 4th grader at Korematsu Elementary. As a member of the Nature Bowl team, I have learned about a big problem in the Sacramento-San Joaquin Delta.
An invasive aquatic weed called South American Spongeplant has been spreading in the past few years through aquarium and water garden trades.
Spongeplant impacts are similar to the the Water Hyacinth, yet this plant is harder to control. It blocks canals, pumps and dams. It also increases risk of flooding in canals and streams. Spongeplant looks a lot like duckweed, yet it is slightly bigger. You can learn more at: http://www.cdfa.ca.gov/plant/ipc/hydrilla/hydrilla_hp.htm. If you see this plant in your area, please report it California Department of Food and Agriculture at 800-491-1899.
-- Nithmi Jayasundara, Davis