DuFour, M.R., Keretz, K.R., and Oldham, R.C., 2022, Hydroacoustic data from central Lake Erie, 2021: U.S. Geological Survey data release, https://doi.org/10.5066/P9S2NFTP.
Summary
Hydroacoustic estimates of fish density are used for fisheries management in central Lake Erie. Hydroacoustic data were collected along 10, randomly-selected, 5-kilometer transects and two cross-basin transects between the US and Canadian shorelines in central Lake Erie during July 2021. Software-generated raw variables were used for calculating estimates of hydroacoustic fish densities presented here in tabular form. These data are related to a longer-term data set from 2010-2019, and a data set from 2020.
Summary
Hydroacoustic estimates of fish density are used for fisheries management in central Lake Erie. Hydroacoustic data were collected along 10, randomly-selected, 5-kilometer transects and two cross-basin transects between the US and Canadian shorelines in central Lake Erie during July 2021. Software-generated raw variables were used for calculating estimates of hydroacoustic fish densities presented here in tabular form. These data are related to a longer-term data set from 2010-2019, and a data set from 2020.
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metadata_20220627.xml “Metadata” Original FGDC Metadata
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Data_table_20220627.csv “Data table”
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Purpose
These data were collected as part of a two-year pilot investigation to compare precision of hydroacoustic density estimates using long, cross-lake transects (existing design, see Kocovsky, P.M., 2020, https://doi.org/10.5066/P9WDAZIP.) compared to shorter, randomly-selected transects (potential new design) for assessing preyfish densities in central Lake Erie (2020 data, see Kocovsky, P.M., 2021, https://doi.org/10.5066/P9YAN7VT.). These data can be used for long-term monitoring of preyfish populations or for statistical analysis of the differences in density estimates and precision of estimates using the two different collection designs.
