Bear Hole Lake FishwayDawson City, British ColumbiaFishway monitoring System Type: BRAVO M2 Observations: Suckers and Northern Pike
American Eel Migration
In 1998 and 1999, we identified the timing of out migration, swimming depth and migratory routes past the Moses-Saunders dam, for American eels
Arctic Char in Hope Bay
In July 2021 and 2022, Biotactic staff travelled to Hope Bay, Nunavut to build fish fences equipped with 2 BRAVO G3 fish monitoring and counting systems. Conducted in association with Minnow Environmental for Agnico Eagle Gold, this project is designed to measure the effectiveness of a rocky ramp fishway, or boulder garden, for restoring access for migratory Arctic Char and Lake Trout to and from Robert’s Lake. Movement will be monitored for several months and passage metrics will be calculated to determine passage success relative to baseline studies.
Impact of COVID-19 Pandemic on a Fishery
After initial complete lock-downs caused recreational angling restrictions due to COVID-19, angler exploitation rates of rainbow trout (Oncorhynchus mykiss) in the Saugeen River, Ontario, A tributary to Lake Huron, increased while fishery support activities remained impeded.
Videographic Surveys Saugeen River
Biotactic has been performing videographic surveys of fish passage at the Maple Hill dam fishway as well as within Otter Creek since 2018. Seasonal surveys are conducted using BRAVO M2 systems and the species, direction of movement, time, and condition of each unique fish is transcribed from recorded video.
Sulphur Springs: Chemical Barriers to Fish Movement
Several cold water sulphur springs flow into tributaries of the Welland River on the Niagara Peninsula. Sulphur spring water temperature
Salmonid Redd Counts in the Saugeen River
Biotactic has been performing redd counts within the Saugeen River watershed since 2018. Surveys are conducted by trained staff in the Spring during the Rainbow Trout spawning period as well as in the Fall during the Chinook Salmon spawning period through a combination of wading and aerial drone videography.
Grand River Smallmouth Bass
Mobility of tournament-caught and released smallmouth bass Micropterus dolomieu was monitored in the Grand River, Ontario, between 1995 and 1999 using radiotelemetry and mark–recapture.
Welland River Siphon (Aquaduct): Impacts of Flow Reversal
In February 2001, Biotactic was contracted by the Niagara Peninsula Conservation Authority to investigate the impact of the Old Welland Canal (OWC) siphon complex on fish migration. The siphon complex
Dam Effects on Benthic Fishes
The biology, microhabitat use and migratory behaviour of greenside darters (Etheostoma blennioides) was studied at the Mannheim Weir
