Matthew J Meulemans

Use of Carbon Dioxide to Prevent Settlement of Dreissenid Mussels

Dreissenid management has focused primarily on chemical tools which are efficacious, but not without ecological or economic costs. There is a need for additional control tools that are less expensive, readily available, and will not leave a residue after treatment. Carbon dioxide has these advantages over chemical pesticides and has demonstrated effectiveness for control of a range of aquatic invasive species, including dreissenid mussels. Carbon dioxide was lethal to adult zebra mussels at levels that were safe to juvenile unionid mussels and lower levels cause detachment and gaping. Dreissenid veligers are more sensitive than adults to water quality conditions, including pH. Therefore, we hypothesized that effective...

Categories: Data, Data Release - In Progress; Tags: Dubuque, Iowa, USGS Upper Midwest Environmental Sciences Center, biota, carbon dioxide, dreissenid mussels, All tags... veligers, zebra mussels, Fewer tags

Supplements to Assessments of the binary mixtures of four toxicants on Zebra Mussel (Dreissena polymorpha) mortality

This dataset contains the supplementary data to the dataset entitled "Assessments of the binary mixtures of four toxicants on Zebra Mussel (Dreissena polymorpha) mortality." These data describe the exposure conditions to include water chemistry before, during, and after exposures as well as mussel condition throughout the study. Monitored water chemistry parameters include dissolved oxygen, temperature, and pH. Periodic measurements of alkalinity, total hardness, and specific conductance where taken before each exposure period. Mussel condition was also assessed at the initiation of each exposure. Mussel condition included shell length and tissue dry weight.

Categories: Data; Tags: USGS-CC Quagga Mussels and Zebra Mussels, USGS-EMA-LOW-IS Invasive mussels, USGS-EMA-LOW-IS Management and Control Tools, biota

Five R Markdown files (.Rmd) were created for the study entitled: Assessments of the binary mixtures of four toxicants on Zebra Mussel (Dreissena polymorpha) mortality. R codes were used to determine toxicant mixture ratios, summarize data, and analyze dose-response relationships in single toxicant and toxicant mixture trials. Files are described in the readme file in the order in which they were used for the study. Each R Markdown file has a complimentary R Script file (.R) with the same file name. All R Markdown files were created in RStudio version 1.2.1335 with R version 3.6.1 and Tidyverse version 1.3.0. Additional packages are listed in braces, “{},” with the corresponding R Markdown description.

This dataset captures the Zebra Mussel dose-response to four independent toxicants and each binary mixture of those toxicants. Toxicants included EarthTec QZ, Clam-Trol CT-2 (syn. Spectrus CT1300), niclosamide, and potassium chloride. Each dose of toxicant was verified with either ICP-OES or UHPLC, depending on analyte, and comparison to a standard curve. Mortality was tabulated for each observation.

Categories: Data, Data Release - In Progress; Tags: USGS-CC Quagga Mussels and Zebra Mussels, USGS-EMA-LOW-IS Invasive mussels, USGS-EMA-LOW-IS Management and Control Tools, biota

Rmd docx Files