You are all invited to follow an interesting key note talk about the revolution in movement ecology. Presented by Prof. Ran Nathan on February 8th at 17h00 CET (until 18h00). Please, feel welcome and register your attendance!

As part of the 3rd RIBES Network School, @ran_nathan from the Hebrew University of Jerusalem, will give an online open #MovementEcology keynote titled "The high-throughput revolution in movement ecology". Register to attend! https://t.co/2RMMKnjeEF

In the present study, we coupled hydrodynamic modelling and acoustic telemetry to analyse the migratory behaviour of 72 Atlantic salmon smolts, over three consecutive years, at an experimental site that offers a bifurcation between two main migration routes.

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We have published 9 (!) acoustic telemetry datasets as #opendata, covering 13 million fish detections in Belgium. 🔊🐟 https://t.co/maYFmLr8M4 Data exported from the @AquaticTracking DB using our ETN R package, formatted as @frictionlessd8a and deposited on @LifeWatchVLIZ MDA.

Are you curious about how scientists track animals under water? 🌊Ever wondered how #acoustic #telemetry works? 🧐 Why it's useful for the conservation and management of aquatic life? 🦈🐟 ETN has just released a beautiful animation for YOU! 🥳 Enjoy!!

#compatibility is necessary for #telemetry networks to deliver good science, and for the greater management & conservation of #aquatic species 🦈🐟🦞. We've created a video to explain just how important this issue is, and the repercussions it may have. https://t.co/fVsGzO7QD8

Together with @scriptievzw, Pieterjan @VerhelstPJ created the game ‘Save the eel’, to inform the wide public about the #obstacles #eels face during their seaward #migration. Dive under water to help Angie so she can go reproduce in the Sargasso Sea:

📣📅Save the Date - International Conference on Fishfriendly Hydropower in Europe and beyond 2021, Munich, Germany, 17-18 March 2021 This is the final #conference of the #FIThydro project #hydrofish2021 #H2020Energy 👉 https://t.co/mWqjBavR3p

Large Archimedes screws are not always fish-friendly. Estimated mortality of 37% for bream, 19% for roach, and 3% for eel. A @FIThydroproject paper on downstream #fishpassage, several authors also in the RIBES network:

Nice!

@FIThydroproject The IUCN European Red List of Freshwater Fishes cites that there are 546 native species. The range of fish species impacted in European rivers can be extensive. We need to understand the impact that hydro can have on all spp likely to be affected. #HydroFish2020 4/10

Check out the rest of this story at ResearchGate! Find out the role of the rotational speed, the results of the Barotrauma Detection Sensors and a novel way of visualizing the physical forces encountered by fish during the chaotic Archimedean screw passage. #HydroFish2020 (10/10)

Most fish were not externally injured. The most prevalent severe external injury was a contusion. Are fish being squeezed between the housing and the screw? BDS sensor data indeed indicated severe impact events occur but barotrauma is no issue. #HydroFish (9/10)

We additionally field-tested the chance we would miss dead fish. With the following formula we could then correct our observed mortality rates into final, reliable mortality rates per species, averaged over the three rotational speeds of the screw. #Hydrofish2020 (8/10)

BUT field work never goes without a hitch. We had trouble catching all tested fish, part of them stayed in the outflow basin between the screw turbines and the large catching-cage. Were we under- or overestimating mortality? #HydroFish2020 (7/10)

We caught fish after screw passage and evaluated their length, weight, state (dead or alive) and external injury type. We observed the following mortality rates (including dying fish and postponed mortality) per species averaged over three rotational speeds. #HydroFish2020 (6/10)

We went out and tested it, by forced passage of hatched fishes and BDS sensors (@TallinnTech; https://t.co/fHqfavsErT) at three rotational speeds of the Archimedean screw turbine. Are we the first to combine fish and sensors? #HydroFish2020 (5/10)

Tortured by so many questions: What is the chance that fish die due to screw passage? Are they injured and what injury do they have? What are the encountered physical forces? Are there species differences? Is there any effect of the screw’s rotational speed? #HydroFish2020 (4/10)