Smolts require access to the fishway (i.e., the fishway must be open and operational) during their downstream migration. In our professional opinion, the Maple Hill Dam fishway, Saugeen River, Ontario, should remain open to allow downstream passage of smolts in July/August, particularly as water temperature decreases in the autumn. It is beneficial to close the fishway to prevent accumulation of debris very early in the spring; however, the fishway should be opened as soon as possible each year, and remain open for as long as possible (i.e., until December)
Fishway Performance Meta-Analysis
Attraction and passage efficiency was reviewed and compared from 19 monitoring studies that produced data for evaluations of pool-and-weir, Denil, vertical-slot and nature-like fishways. Data from 26 species of anadromous and potamodromous fishes from 6 countries were separated by year and taxonomic family into a matrix with 101 records.
Fish Passage in Brazil
In November 2012, and again in 2019 we assisted our very good friends at Simbiota in Southern Brazil with some very exciting fish surgery,
Welland River Siphon (Aqueduct) White Sucker Tracking 2013
Biotactic and the Niagara Peninsula Conservation Authority (with assistance from the OMNR) radio-tagged and tracked 40
Upstream Transportation of Sea Lampreys
A video-based fishway monitoring system was used for five years (2011-2015) to count migrating salmonids that inadvertently transported juvenile
Restoring Walleye Migration in the Shebeshekong River
In 2017 we restored migration routes for Walleye at a set of rapids and a waterfall that had been damaged by historic logging operations in the Shebeshekong River which is a tributary to Georgian
Fisheries Offsets and Compensation- Bruce Power
Biotactic devised and developed a Before-After-Control-Impact (BACI) study for the Bruce Power Nuclear Generating Station to offset and compensate for fisheries impacts associated with nuclear
Biotactic Fisheries Research & Monitoring – Biotactic Inc.
We began using underwater videography to monitor fish back in 1989 and things have changed a lot since then. Using our invaluable experience, we design, build and supply fish monitoring and fish counting systems.
