Catalog Record

Report from S&T Project 21058: Invasive Quagga Mussel Impacts on the Lake Havasu Ecosystem

Invasive quagga mussels have been present in the Lake Havasu ecosystem since at least 2007. Mussels are known to impact plankton communities, nutrient loads, macrophyte coverage, and higher organisms. This study was initiated to evaluate existing data related to ecological impacts of mussels at Lake Havasu. Data included water quality measurements and plankton survey data. No large trends were observed in the available data. Plankton communities have changed slightly, with rotifers becoming a larger percentage of the biomass. Soluble phosphorus may be shifting to deeper water, while nitrate-nitrogen and chlorophyll concentrations appear to have increased. Developing a full picture of the ecological impacts at Lake Havasu will require a standardized, long-term monitoring program that includes water quality and plankton, as well as higher organisms like fish and macroinvertebrates.
Generation Effort S&T Project 21058: Invasive Quagga Mussel Impacts on the Lake Havasu Ecosystem
Themes Biological
Tags Invasive Species, Invasive Mussels, Ecological Impacts Of Mussels, Lake Havasu
Reclamation Project Parker-Davis Project
Reclamation Program Science and Technology Program

Location Information

Location Description
Location Tags Lower Colorado River Basin, Colorado River Basin, Parker Dam
Location Parent
State(s) Arizona, California
Unified Region(s) Lower Colorado Basin
Timezone MT
Elevation 450 ft
Vertical Datum USGS 1912
Coordinates (lat, long) See Location Details
Horizontal Datum WGS84