This standard was retired on May 22, 2024. See the Governing Board staff report at https://www.trpa.gov/wp-content/uploads/Agenda-Item-No-IX-A-Threshold-Carrying-Capacities-Threshold-Standards.pdf  for more information. The content on this page is archived and available for evaluations prior to May 2024, but will not be updated or maintained for future evaluations. 

The updated Aquatic Invasive Species standards adopted in May 2024 may be found at: https://thresholds.laketahoeinfo.org/ThresholdReportingCategory/Detail/AquaticInvasiveSpecies

Aquatic Invasive Species Prevention

No Active Aquatic Invasive Plant Infestations

Reduce Average Aquatic Invasive Plant Abundance in the Tahoe Keys

The standard articulates one of the broad goals of the Aquatic Invasive Species (AIS) program, to reduce the ecological impacts of AIS in Lake Tahoe. AIS are non-native organisms that threaten the abundance and diversity of native organisms in Lake Tahoe. Non-native species have been intentionally and unintentionally introduced to the Tahoe Basin over the last 150 years. Ecological impacts of AIS can include threats to native plants and animals, changes to water chemistry and physical habitat, increased predation, and greater competition for food supplies. The EIP partners of the AIS program implement projects to control and remove existing AIS from the lake and to prevent the introduction of new AIS. The programs both reduce the impact of existing AIS and the threat from new AIS.