A fish doorbell (Dutch: visdeurbel) is a system that allows fish to pass through a closed sluice gate through crowdsourced input when fish are present. The Utrecht Visdeurbel uses a livestreamed underwater camera that allows users to press a doorbell button to notify the lock operator that there are fish swimming in the gracht, and that the lock should be opened.[1] It is designed to aid in seasonal fish migration,[2] as an alternative to a physical fish ladder. The purpose of the project is to increase the survival of local fish that are otherwise vulnerable to predation during migration.
Usage
editIt was deployed for the first time in Utrecht in March 2021,[3][4][5][6] at the Weerdsluis on the Oudegracht. In the first two weeks, it was used 23,000 times.[7] It was disabled in June,[8] but was reinstated at https://visdeurbel.nl. It ceased operation on July 1st, 2024 due to concluded migratory patterns and states an expected return date of March 3rd, 2025.
References
edit- ^ Corbley, Andy (21 April 2021). "Dutch Citizens are Using a "Doorbell" to Help Fish Pass Through the Canal Gate". GoodNewsNetwork. Retrieved 19 January 2022.
- ^ Visdeurbel. "Over de visdeurbel". visdeurbel (in Dutch). Retrieved 2022-07-02.
- ^ "Utrecht krijgt de eerste visdeurbel ter wereld (en dit is geen 1 aprilgrap): 'Bij de sluis ontstaat een vissenfile'". Algemeen Dagblad. Retrieved 2021-03-29.
- ^ Hee, Sterre van der (2021-03-29). "Deze visdeurbel moet vissen in Utrecht gaan helpen: 'Mensen en dieren kunnen best wat meer samenleven'". Trouw (in Dutch). Retrieved 2021-03-29.
- ^ "Utrecht helpt vissen de sluis door: visdeurbel bij Weerdsluis vanaf nu live". De Utrechtse Internet Courant. 2021-03-29. Retrieved 2021-03-30.
- ^ "Utrecht heeft eerste visdeurbel ter wereld, vis wacht tot sluis opengaat". NU.nl (in Dutch). 2021-03-29. Retrieved 2021-03-30.
- ^ "Visdeurbel Oudegracht Utrecht ruim 32.000 keer ingedrukt". NOS.nl (in Dutch). 14 April 2021. Retrieved 2021-04-16.
- ^ "Visdeurbel bij Utrechtse sluis komt volgend seizoen weer terug". NOS.nl (in Dutch). 7 June 2021. Retrieved 2021-06-23.
External links
edit- Visdeurbel (in Dutch and English)