Summary of targeted sampling for silver shiner (Notropis photogenis) in Sixteen Mile Creek, Ontario, 2022 / by Lianna S. Lopez, Kayla D. Bruce, Karl A. Lamothe, Julia E. Colm, and D. Andrew R. Drake.: Fs97-13/1383E-PDF

"Silver Shiner (Notropis photogenis) is a freshwater fish species listed as Threatened under Canada's Species at Risk Act (SARA). A species-specific monitoring protocol was developed for adult Silver Shiner in Sixteen Mile Creek (Oakville, Ontario) with sampling conducted in 2022 to act as a baseline for future comparisons. Habitat and fish sampling occurred from Britannia Rd. in Milton, downstream to the Queen Elizabeth Way (QEW/HWY 403) in Oakville. A new sampling design was implemented where a priori habitat sampling was used to inform site selection for fish sampling based on a site depth-occupancy relationship developed for adult Silver Shiner. During habitat sampling, depth was measured in 199 runs and pools, which ranged from 0.30 m to 0.96 m. During fish sampling, three repeat seine hauls were conducted at 101 sites, capturing 787 adult Silver Shiner. Adult Silver Shiner were detected at 75 sites with depths ranging from 0.35 m to 1.18 m. The fieldwork completed in 2022 has provided a foundation for future work to help determine whether this new sampling design has improved the ability to detect Silver Shiner or led to improvements in statistical power to describe changes in species occupancy"--Abstract, page v.

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