Chris Pressey
Evaluating stationary hydroacoustics for determining fish movement and abundance
Little is known about the large-scale movement patterns of Great Lakes fishes. Though it is understood that large migrations of fish typically occur along regions of Lake Superior during spawning events, the timing and potential drivers of these events are not well understood. Better understanding the timing and drivers of these events is important for more effective management of these fisheries. ...
Black Bay Walleye Acoustic Telemetry
Located on the north shore of Lake Superior, Black Bay historically supported a robust commercial and recreational fishery for walleye (Sander vitreus). Unfortunately, the walleye population rapidly declined in the 1960s because of a combination of habitat loss and commercial over-fishing. In response, managers closed the fishery in the northern part of Black Bay to allow the population to recover. ...
GETTING REAL: REAL-TIME TECHNOLOGY PROVIDES GREATER INSIGHT ON WATER QUALITY ISSUES
Harmful algal blooms (HABs) and the low dissolved oxygen concentrations associated with them are a growing concern for large water bodies throughout the world. HABs have resulted in fish kills and drinking water advisories, which collectively have caused estimated economic losses of up to US$71 million per year within Lake Erie alone.…
Using the REASON (River Environment And Sensor Observation Network) Project to Support Adaptive Management of the Saint Lawrence River
A regional water problem is the paucity of data to support policy decisions on water quality in the International Section of the St. Lawrence River. One cost-effective method to alleviate this information gap is to use remote continuous observation water quality sensor arrays. A novel application that we have developed is the installation of sensor arrays in a hydropower dam wherein ...
Monitoring flood water in the Detroit River
Great Lakes water levels have reached record highs in 2019, eroding shorelines, threatening and damaging public/private infrastructure (e.g., marinas, homes and cottages), and overwhelming water systems in communities. On July 7, 2019, strong winds from the northwest pushed Detroit River water above the storm water system in Lasalle, Ontario, resulting in significant flooding, closure of streets, and limiting access to homes, public spaces (closed swimming pools and sport fields) and many businesses.…