Where the action is: underwater noise and its effects on sea bass larvae (Dicentrarchus labrax) at a piling platform

Elisabeth Debusschere, Bert Decoensel, Dick Botteldooren, Kristian Hostens, Sofie Vandendriessche, Magda Vincx, Steven Degraer

    Onderzoeksoutput: Bijdrage aan congresC3: Congres - Meeting abstract

    Uittreksel

    The pile-driving of monopiles has triggered a range of ecological questions regarding the impact of anthropogenically generated low frequency impulsive underwater noise on marine wildlife. This study tackles the impact of pile-driving on fish eggs and larvae which form the basis of fish populations and are an important prey for pelagic predators. Given that their transport is primarily current based; they are exposed to underwater noise present in the water column
    One of the aims of the OffNoise project is to determine if pile-driving causes 100 % mortality at the piling source itself. The first opportunity to conduct an experiment was the piling activity during the construction of the Northwind NV offshore wind farm in June 2013. From the piling platform, sea bass (Dicentrarchus labrax) larvae were lowered into the sea and exposed to a complete piling event, at a distance of 40m from the pile-driving source. Simultaneously to each repeat, the underwater sound pressure and particle motion were recorded. Mortality and respiration rates were monitored, cortisol samples taken and surviving larvae were reared in the lab to examine effects on development and growth. As a control, the same procedures and measurements were done during a piling pause.
    TaalEngels
    StatusGepubliceerd - 26-nov-2013
    EvenementEnvironmental impact of offshore wind farms, Learning from the past to optimise future monitoring programmes - Brussel, België
    Duur: 26-nov-201328-nov-2013
    http://www2.mumm.ac.be/winmonbe2013/

    Congres

    CongresEnvironmental impact of offshore wind farms, Learning from the past to optimise future monitoring programmes
    LandBelgië
    StadBrussel
    Periode26/11/1328/11/13
    Internet adres

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