Search Results - "Helminen, Jani"

Accuracy and Precision of Low-Cost Echosounder and Automated Data Processing Software for Habitat Mapping in a Large River by Helminen, Jani, Linnansaari, Tommi, Bruce, Meghann, Dolson-Edge, Rebecca, Curry, R. Allen

“…The development of consumer hydroacoustic systems continues to advance, enabling the use of low-cost methods for professional mapping purposes. Information…”
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Development of Active Numerating Side-scan for a High-Density Overwintering Location for Endemic Shortnose Sturgeon (Acipenser brevirostrum) in the Saint John River, New Brunswick by Andrews, Samuel N., O’Sullivan, Antóin M., Helminen, Jani, Arluison, Daniel F., Samways, Kurt M., Linnansaari, Tommi, Curry, R. Allen

“…In 1979, the Shortnose Sturgeon (Acipenser brevirostrum) population of the Saint John River, New Brunswick, was estimated at 18,000 ± 5400 individuals. More…”
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Object and behavior differentiation for improved automated counts of migrating river fish using imaging sonar data by Helminen, Jani, Linnansaari, Tommi

“…•Automated imaging sonar fish counts are desired but currently not common.•Echoview software and postprocessing was used for automated fish counts.•Good…”
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Measuring Tailbeat Frequencies of Three Fish Species from Adaptive Resolution Imaging Sonar Data by Helminen, Jani, O’Sullivan, Antóin M., Linnansaari, Tommi

“…Imaging sonars, such as the Adaptive Resolution Imaging Sonar (ARIS), provide high‐resolution sonar data that are used in fisheries research and management…”
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Length measurement accuracy of adaptive resolution imaging sonar and a predictive model to assess adult Atlantic salmon (Salmo salar) into two size categories with long‐range data in a river by Helminen, Jani, Dauphin, Guillaume J. R., Linnansaari, Tommi

“…Imaging sonars are used around the world for fish population monitoring. The accuracy of the length measurements has been reported in multiple studies for…”
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Timing and frequency of high temperature events bend the onset of behavioural thermoregulation in Atlantic salmon ( Salmo salar ) by O'Sullivan, Antóin M, Corey, Emily M, Collet, Elise N, Helminen, Jani, Curry, R Allen, MacIntyre, Chris, Linnansaari, Tommi

“…The role of temperature on biological activities and the correspondent exponential relationship with temperature has been known for over a century. However,…”
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