Catalog Item

Lake Powell Glen Canyon Dam and Powerplant Intermittent Veliger Density Time Series Data

Measurements of quagga mussel veliger numbers from Lake Powell Glen Canyon Dam and Powerplant. Veligers, the larval stage of dreissenid mussels, are collected with a plankton tow net and preserved with alcohol and buffer. Veligers are identified and counted under cross-polarized light microscopy. Veliger density refers to the number of veligers per cubic meter in the sampled location, as calculated from the total veliger count in the sample and the tow volume taken for sample collection.
Query Data
Generation Effort Invasive Mussel Early Detection and Monitoring
Type Time series
Modeled/Observed Item-observed-value
Start Date Thu Mar 14 2013 01:00:00 GMT-0600 (Mountain Daylight Time)
End Date Wed Jul 15 2015 01:00:00 GMT-0600 (Mountain Daylight Time)
Parameter Name Veliger Density
Parameter Group Physical Analytes
Parameter Transformation instant
Time Step intermittent
Parameter Unit count/m3
Item Vertical Datum
Update Frequency irregular
Last Update Wednesday, March 31st, 2021


Data are provisional and subject to revision unless otherwise noted. Data users are cautioned to consider carefully the provisional nature of the information before using it.