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Full-Text Articles in Physical Sciences and Mathematics
A Standardized Design For Quagga Mussel Monitoring In Lake Mead, Nevada-Arizona, Wai Hing Wong, Shawn Gerstenberger, Jennell M. Miller, Craig Palmer, Bryan Moore
A Standardized Design For Quagga Mussel Monitoring In Lake Mead, Nevada-Arizona, Wai Hing Wong, Shawn Gerstenberger, Jennell M. Miller, Craig Palmer, Bryan Moore
Environmental & Occupational Health Faculty Publications
The discovery of quagga mussels (Dreissena rostriformis bugensis) in Lake Mead, Nevada-Arizona, on January 6, 2007 is the first known occurrence of dreissenid species in the western United States. This study developed elements of a cost-effective and standardized quagga mussel-monitoring program for Lake Mead using preliminary data to arrive at statistically based numbers of sampling sites. To represent the abundance of adult/juvenile quagga mussels in Lake Mead’s heterogeneous floor with 95% confidence, a stratified simple random sampling design revealed a requirement of 41 samples from hard substrates (i.e., rocky areas) and 97 samples from soft substrates (i.e., sandy and muddy …