Staff Publications

Staff Publications

  • external user (warningwarning)
  • Log in as
  • language uk
  • About

    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

    We have a manual that explains all the features 

Record number 562907
Title Linking the morphology and ecology of subtidal soft-bottom marine benthic habitats: A novel multiscale approach
Author(s) Mestdagh, Sebastiaan; Amiri-Simkooei, Alireza; Reijden, Karin J. van der; Koop, Leo; O'Flynn, Sarah; Snellen, Mirjam; Sluis, Christiaan Van; Govers, Laura L.; Simons, Dick G.; Herman, Peter M.J.; Olff, Han; Ysebaert, Tom
Source Estuarine Coastal and Shelf Science 238 (2020). - ISSN 0272-7714
DOI https://doi.org/10.1016/j.ecss.2020.106687
Department(s) Onderz. Form. D.
Publication type Refereed Article in a scientific journal
Publication year 2020
Keyword(s) Macrobenthos - Multibeam sonar - Sand waves - Sandbanks - Seafloor morphology - Video transect
Abstract

High-resolution surveying techniques of subtidal soft-bottom seafloor habitats show higher small-scale variation in topography and sediment type than previously thought, but the ecological relevance of this variation remains unclear. In addition, high-resolution surveys of benthic fauna show a large spatial variability in community composition, but this has yet poorly been linked to seafloor morphology and sediment composition. For instance, on soft-bottom coastal shelves, hydrodynamic forces from winds and tidal currents can cause nested multiscale morphological features ranging from metre-scale (mega)ripples, to sand waves and kilometre-scale linear sandbanks. This multiscale habitat heterogeneity is generally disregarded in the ecological assessments of benthic habitats. We therefore developed and tested a novel multiscale assessment toolbox that combines standard bathymetry, multibeam backscatter classification, video surveying of epibenthos and box core samples of sediment and macrobenthos. In a study on the Brown Bank, a sandbank in the southern North Sea, we found that these methods are greatly complementary and allow for more detail in the interpretation of benthic surveys. Acoustic and video data characterised the seafloor surface and subsurface, and macrobenthos communities were found to be structured by both sandbank and sand wave topography. We found indications that acoustic techniques can be used to determine the location of epibenthic reefs. The multiscale assessment toolbox furthermore allows formulating recommendations for conservation management related to the impact of sea floor disturbances through dredging and trawling.

Comments
There are no comments yet. You can post the first one!
Post a comment
 
Please log in to use this service. Login as Wageningen University & Research user or guest user in upper right hand corner of this page.