Ecological study of foreshore nourishment at the Flemish coast

Liesbet Colson, Gert Van Hoey, Jan Vanaverbeke, Magda Vincx

    Research output: Chapter in Book/Report/Conference proceedingC3: Conference Abstractpeer-review

    Abstract

    In the framework of ‘Masterplan Kustveiligheid’ of the Flemish government, weak spots at the Flemish coast will be managed to increase our coastal safety. One of the solutions is beach nourishment, whereby sand is dropped on the beaches to compensate beach erosion for a period of 5 years. To optimize the maintenance of these nourishments (techniques, longevity, costs and management) in the future, alternatives will be investigated. One option is foreshore nourishment on which a pilot study was set up at Raversijde-Mariakerke (Belgium).
    Foreshore nourishment will influence the state of the marine ecosystem in one or another way. Therefore, a monitoring programme was initiated (4SHORE) in autumn 2013 to follow-up the ecological effects of this anthropogenic disruption on the fauna, applying a BACI (Before After Control Impact) strategy.
    The goal of the ecological monitoring campaign is to evaluate first the ecological value of the nourished area before nourishment, both in spring as in autumn. Possible changes in the ecological value due to this nourishment will be measured in the following two years (spring and autumn). An impact (nourished zone) and a control area (same habitat type, not influenced by the impact) are included in the study.
    To determine the ecological value or changes in it, we will evaluate the present fauna (macrobenthos, hyperbenthos, epibenthos and demersal fish) and their ecosystem functioning (e.g. the relationship between the food source and their prey). For delivering an objective judgment on the nourishment effects (is it bad or good), we will apply standard indicators defined under the Marine Strategy Framework Directive. Changes in the ecosystem will be studied via biotic (biomass, density, diversity) and abiotic (grain size, organic matter) variables.
    Original languageEnglish
    Title of host publicationBook of abstracts - VLIZ Young Scientists' Day. Brugge, Belgium, 7 March 2014. VLIZ Special Publication 67
    EditorsJan Mees, Jan Seys
    Number of pages1
    PublisherFlanders Marine Institute
    Publication date7-Mar-2014
    ISBN (Print)1377-0950
    Publication statusPublished - 7-Mar-2014
    EventVLIZ Young Marine Scientists' Day - Brugge, Belgium
    Duration: 7-Mar-20147-Mar-2014
    http://www.vliz.be

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