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Intertidal macrobenthos monitoring in function of a foreshore suppletion at the Belgian coast, period 2013-2016
Citation
Marine Biology research group; University of Ghent, Belgium; (2017): Intertidal macrobenthos monitoring in function of a foreshore suppletion at the Belgian coast, period 2013-2016

Availability: Creative Commons License This dataset is licensed under a Creative Commons Attribution 4.0 International License.

Description
What ecological effects does a foreshore suppletion, and a beach suppletion, have on the marine ecosystem in the intertidal and shallow surf zone (<6 m depth)? The foreshore suppletion (400.000m³) was by means of an experimental set-up in the shallow coastal zone (-1 to -2m TAW) of Mariakerke. Beside it, a beach nourishment was conducted at Mariakerke (681243m³) and Middelkerke (968754m³). For the Mariakerke area, we collect biological and sedimentological samples in the impact area and in a control area (Bredene), before as after the suppletion, whereas for Middelkerke only the data after suppletion was part of the study. We monitor the marine ecosystem with a focus on the fauna within the sediment (macrofauna) and on the sediment (hyperbenthos, epi- and demersal fish fauna) in the intertidal zone and subtidal zone. In both studies, the subtidal area is the zone between the low water line and the 6m depth line and the intertdial area is the zone between low and high tide water line. more

This dataset contain the macrobenthic data collected in the intertidal area. Macrobenthos are the biota that lives in the sediment and are retained on a sieve of 1mm. The sampling design for the monitoring is following the BACI-design (Before After Control Impact), with a control area with similar habitat characteristics outside the influence of the suppletion activity. There is sampled before the suppletion and in the following two years after suppletion. In this BACI-monitoring, the seasonal aspect is taken into account, by taking samples in spring (March) and autumn (September). The amount of sampling locations was determined by the client and determines 15 points for each sampling moment. The 15 samples were taken by starting at high tide and ending at low tide and making a V-form pattern. The samples are taken by a metal frame with a size of 0.1026m². This frame is pushed into the sand, above the swash zone until a depth of 15cm. The sediment and fauna is excavated and put on a sieve with a 1mm mesh size. The sieving occurs in the sea and the sieved material is put into a plastic pot and fixed with an 8% formaldehyde-seawater solution. The samples were stained with bengaals roze. All biota were determined and counted to species level following a standardized taxonomic discrimination protocol. This to determine the determination level and if certain life stages (larvae, juveniles) need to be discriminated. The biomass is determined as wet weight. All macrobenthic samples were taken following the ISO16665:2005(E)) (“Water quality – Guidelines for quantitative sampling and sample processing of marine soft-bottom macrofauna”).

Scope
Themes:
Biology > Benthos
Keywords:
Marine, Coastal defences, foreshore suppletion, Macrobenthos, Amphipoda, Annelida, Echinodermata, Mollusca

Temporal coverage
2013 - 2016

Taxonomic coverage
Amphipoda [WoRMS]
Annelida [WoRMS]
Echinodermata [WoRMS]
Mollusca [WoRMS]

Contributors
Universiteit Gent; Faculteit Wetenschappen; Vakgroep Biologie; Onderzoeksgroep Mariene Biologie (MARBIOL), moredata providerdata creator
Vlaamse overheid; Beleidsdomein Landbouw en Visserij; Instituut voor landbouw-, visserij en voedingsonderzoek (ILVO), moredata provider

Publication
Describing this dataset
Colson, L. et al. (2017). Ecologische monitoring in het kader van het Masterplan Kustveiligheid: Middelkerke (t1‐situatie): Eindrapport. ILVO Mededeling, 233. Instituut voor Landbouw-, Visserij- en Voedingsonderzoek: Merelbeke. 34 pp., more
Colson, L. et al. (2016). Ecologische monitoring strand- en vooroever in functie van suppletie activiteiten: Eindrapport. ILVO Mededeling, 219. Instituut voor Landbouw- en Visserijonderzoek: Merelbeke. 109 pp., more

Dataset status: In Progress
Data type: Data
Data origin: Research: field survey
Metadatarecord created: 2017-06-30
Information last updated: 2017-08-25
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