California Department of Boating and Waterways - Units - Non-native Species Removal

Non-native Species Removal

California Department of Boating and Waterways' Aquatic Pest Control Program has since 1982 targeted to control water hyacinth from state waters. A native of the Amazon River in South America, the water hyacinth was introduced to the Sacramento-San Joaquin River Delta in the early 20th century. Due to the quick blooming of the water hyacinth, the plant displaces native wildlife, blocks light needed for photosynthesis, reduces the amount of dissolved oxygen in the water, and deposits silt and organic matter at several times the normal rate. In 1997, the department added the egeria densa, another South American native, onto its list of species targeted for control and eradication.

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