Biotactic established twenty-two long term monitoring sites (66 sampling subsections) across the Saugeen River watershed within which annual biomass electrofishing surveys are performed to monitor the change in the fish community as a function of the removal of the Truax dam in Walkerton, Ontario, as part of a fisheries offset and compensation project.
Dam Effects on Benthic Fishes
The biology, microhabitat use and migratory behaviour of greenside darters (Etheostoma blennioides) was studied at the Mannheim Weir
Fish Movement in the Welland River Watershed
Starting in 2001 Biotactic, with the Niagara Peninsula Conservation Authority (NPCA) and Niagara Restoration Council, has monitored the diversity and relative abundance of fishes in the Welland River and Oswego Creek using various active sampling techniques, radio-telemetry and a long-term publicly assisted mark-recapture study.
BRAVO Underwater Videography
BRAVO Network Biotactic Research And Videography ObservatoriesWe began using underwater videography to monitor fish back in 1989 and things have changed a lot since then. Using our invaluable experience, we now design, build and supply cabled underwater fish and wildlife monitoring and counting systems that are ideal for monitoring fishways (for example see Node 10) and any other artificial or …
Rainbow Trout Migration Patterns in the Saugeen River Watershed
The Truax Dam was removed in August 2019. Future post-removal phases of this study will provide data that will be compared to baseline information to assess the impact of the removal of this barrier on the Saugeen River rainbow trout population.
Rainbow Trout Passage at a Nature-Like Fishway, Beaver River, Ontario
Rainbow Trout (Oncorhynchus mykiss) were monitored over two consecutive vernal migration periods at a nature-like fishway on the Beaver River, Ontario to assess attraction efficiency, passage
Rainbow Trout Passage at the Maple Hill Dam
Passage efficiency of radiotagged rainbow trout at the Maple Hill fishway was 20 %. Based on our professional opinion, coupled with radiotelemetric data and underwater videography, it is highly likely that the measured
Northern Pike Telemetry and Passage Monitoring
Radio transmitters were surgically implanted in the body cavity of ten northern pike between 502 mm TL and 752 mm TL in March 2003 to assess fish passage at the Port Davidson Weir. Fish were released downstream from the fish bypass channel, and tracking began immediately using mobile
Swimming in Turbulent Flows
We have installed and operated cameras that stream fish movement inside fishways, onto the internet since 2007. In 1997, 1998 and 1999, we used underwater videography to monitor fish behaviour
Upstream Passage of Walleye
In September 1999 and April 2002, Biotactic Inc. was contracted by The Dow Chemical Company to examine a vertical-slot fishway
