Notice of permit
Regional or Local Number: DFO-17-PCAA-00022
Notice is hereby given that pursuant to the provisions of section 73 of the Species at Risk Act permit no. DFO-17-PCAA-00022 is issued.
Scientific research for the conservation of the species
Historical Redside Dace sites will be sampled for presence, abundance, and detection probability, to determine required search effort for the species, using novel and conventional sampling methods, and to develop an underwater camera method to optimize efficiency for detecting rare species. As the efficiency of this new tool has yet to be assessed, a combination of conventional techniques and underwater visual analysis (UWVA) will be used. The sampling methods will include electrofishing and seining. All collected fishes will be quantified, measured, and identified by species before being released.
Start Date: 2017-07-13 End Date: 2017-10-31
Issuing Authority: Department of Fisheries and Oceans
- Species at Risk Act
Location of Activity (province, territory or ocean):
a) Alternatives: Research cannot be carried out at non-Redside Dace sites because these sites are being specifically targeted for study relating to occupancy and population numbers. Multiple passes are required for model convergence, in order to properly assess occupancy of Redside Dace using occupancy models. An estimation of relative abundance using conventional methods is required to properly calibrate camera equipment. b) Measures to minimize impact: The use of UWVA will eliminate the need to physically handle fishes, allowing proper and continual monitoring of populations without negative repercussions. To minimize the effects of stress to captured fishes, they will be held in buckets filled with stream water, and kept in the shade with a bubbler. All fishes captured and held in buckets will be constantly monitored, and any signs of stress or discomfort will prompt checking of the temperature. Once processed, they will be kept in recovery bins, monitored constantly, and then released. All personnel have a minimum of 2 years of experience sampling and handling species at risk, have taken animal ethics courses at the University of Toronto or Fleming College, and all have completed “The Experimental Fish Course” offered online through the University of PEI. c) Effects on survival and recovery: The survival and recovery of the species will not be jeopardized due to the level of experience of those conducting the sampling. Mortality rates of individual fish using conventional sampling gear is between 1-2%, and that mortality rate has been decreased to less than 1% with the mitigation measures that have been selected. All Redside Dace will be returned to their environment and therefore, there will be no be reduction in population numbers. A potential short-term increase in water turbidity may be expected due to the necessity of wading in the stream, as sediment is disturbed. No other adverse effects to Redside Dace habitat are expected.
Mr. Raymond Ratynski
Regional Manager, Species at Risk Program
Freshwater Institute, Fisheries and Oceans Canada
501 University Crescent
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