What is a 'fish bell' that solves the problem of floodgates that prevent fish from moving?
In a canal in the Netherlands, fish move through the canal at the change of seasons to breed and so on. However, the sluice gates installed there prevent the fish from passing through, so the sluice gate managers have to visually check the fish every time they arrive and open and close the sluice gates periodically. To improve this situation, biologists have come up with a 'fish bell' system.
About the fish doorbell - visdeurbel
Utrecht closes the door to the first visit (this is the 1st April): 'When the door opens, a visitor will be informed' | Utrecht | AD.nl
https://www.ad.nl/utrecht/utrecht-krijgt-de-erste-visdeurbel-ter-wereld-en-dit-is-geen-1-aprilgrap-bij-de-sluis-ontstaat-een-vissenfile~adfd2019/
The fish bell is located at a gate on the Vecht Canal in the Dutch city of Utrecht . The gate is usually closed, but during the change of seasons, fish come and go, so the gate needs to be opened and closed several times a day.
But lock managers can't keep an eye on the area all the time, so Utrecht biologists Mark van Heukelum and Anne Nijs have devised a unique system to notify lock managers that fish have arrived.
The system involves installing underwater cameras at the floodgates and posting live footage online to the public, and anyone who spots a fish in the footage can notify the floodgate manager of the fish's arrival.
To use the system, first go to the live camera page , which displays live underwater footage and a red 'call bell' button.
If you spot a fish in the footage, stop the footage and press the bell button.
Then, a list of fish that live in the Fecht Canal this season will be displayed below the video, so click on the fish you think is the one in the video and click 'Versturen (Submit)' on the right.
If the message 'Bendankt voor je inzending!' appears, the submission is successful and the image will be reported to the gate manager. If enough reports are received, the gate will be opened.
Heukelum and his team had been working on a project to make the residents of Utrecht aware of the fish in the canal. While talking to the manager of the water gate, Heukelum said he wanted to actually see what kind of fish were swimming in the canal. Heukelum said that the reason they chose this kind of time-consuming system instead of an automatic sensor is because it was a way to let the residents of Utrecht learn about fish in a fun way.
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in Creature, , Posted by log1p_kr