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Dernière mise à jour : Mai 2018

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ELLS-IAGLR-2018 : \'Big Lakes, Small World\'. Exchange ideas and information on all aspects of large-lake limnology to highlight the diversity and commonalities across the world\'s great lakes.

The Harle: an autonomous vehicle for non-intrusive fish population studies in lakes

Submitted by : Barbet Denis
Abstract type : Poster
Session type : 6 : Research gaps and emerging tools/technologies for limnology (Confirmed session)
Author Speaker : Guillard Jean

Information about other authors (name,surname,institute,country) :

Jean Guillard1, Olivier Le Meaux2, Romain Vincent-Falquet2, Chloé Goulon1

1 : UMR CARRTEL, INRA – Université de Savoie Mont Blanc, 75 av. de Corzent, 74200 Thonon les Bains, France,

2 : CT2MC SAS, 17 Allée Lac Saint André - BP 367, Savoie Technolac 73372 Le Bourget-du-Lac

Abstract :

In order to respond to freshwater aquatic ecosystems global issues, assessments of fish population in lakes and reservoirs are increasing. Non-invasive methods such as hydro-acoustics are encouraged. Hydro-acoustics is now normalized and routinely used as a consistent tool to provide a wide range of information : fish distributions and abundances, bottom characteristics (bathymetry, sediment nature, macrophytes), zooplankton density,... It allows getting numerous data in a relatively short time compared to other sampling techniques, but needs always a minimum of two persons involved. Today the challenge is to increase the number of data, to reduce the global cost and to improve the reliability by getting easily replicates. Autonomous vehicles can help to address this concern. They are resistant, lightweight, and can operate in various ecosystems. Their sterile hull and aerial propulsion offer non-contaminated data and do not disturb the environment. The HARLE (Hydroacoustic Autonomous boat for Remote fish detections in LakE) is the first autonomous device for hydro-acoustics in freshwater equipped with the new echosounder generation (EK80, SIMRAD). It was developed between a start-up (CT2MC) and a research institute (UMR CARRTEL). In situ data obtained using simultaneously the HARLE and a boat are analyzed to check the prototype reliability.

Keywords : hydro-acoustics, standardisation, fish population, autonomous vehicles
Documents :


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