Similar diversity-disturbance responses to different physical impacts: Three cases of small-scale biodiversity increase in the Belgian part of the North Sea

Annelies De Backer, Gert Van Hoey, Delphine Coates, Jan Vanaverbeke, Kristian Hostens

    Onderzoeksoutput: Bijdrage aan congresGepubliceerd abstract

    Uittreksel

    Human activities at sea are still increasing. As biodiversity is a central topic in the management of our seas, it is important to understand how diversity responds to different disturbances related with physical impacts. We investigated the effects of three impacts, i.e. sand extraction, dredge disposal and offshore wind energy
    exploitation, on the soft-bottom macrobenthic assemblages in the Belgian part of the North Sea. We found similar diversity-disturbance responses, mainly related to the fact that different impacts caused similar environmental changes. We observed a sediment refinement which triggered a shift towards a young, dynamic (transitional) soft-bottom macrobenthic assemblage, with several species typically associated with fine sediments. This led to a local unexpected biodiversity increase in the impacted area. On a wider regional scale, the ever increasing human impacts might lead to a homogenization of the sediment, resulting in a more uniform, yet less diverse benthic ecosystem.
    TaalEngels
    Aantal pagina's1
    StatusGepubliceerd - mei-2014
    EvenementECSA 54 - Sesimbra, Portugal
    Duur: 12-mei-201416-mei-2014
    http://ecsa54.fc.ul.pt/

    Congres

    CongresECSA 54
    LandPortugal
    StadSesimbra
    Periode12/05/1416/05/14
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