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one publication added to basket [134491]
Tidal flat nematode responses to hypoxia and subsequent macrofauna-mediated alterations of sediment properties
Van Colen, C.; Montserrat, F.; Verbist, K.; Vincx, M.; Steyaert, M.; Vanaverbeke, J.; Herman, P.M.J.; Degraer, S.; Ysebaert, T.J. (2009). Tidal flat nematode responses to hypoxia and subsequent macrofauna-mediated alterations of sediment properties. Mar. Ecol. Prog. Ser. 381: 189-197. https://dx.doi.org/10.3354/meps07914
In: Marine Ecology Progress Series. Inter-Research: Oldendorf/Luhe. ISSN 0171-8630; e-ISSN 1616-1599
Related to:
Van Colen, C.; Montserrat, F.; Verbist, K.; Vincx, M.; Steyaert, M.; Vanaverbeke, J.; Herman, P.M.J.; Degraer, S.; Ysebaert, T.J. (2009). Tidal flat nematode responses to hypoxia and subsequent macrofauna-mediated alterations of sediment properties, in: Van Colen, C. Tidal flat macrobenthos ecology, recolonisation and succession = Ecologie, herkolonisatie en successie van het macrobenthos in slikken. pp. 105-122, more
Peer reviewed article  

Available in  Authors 

Keywords
    Benthic communities
    Diseases > Human diseases > Hypoxia
    Interactions
    Intertidal flats
    Macrobenthos
    Meiofauna
    Physics > Mechanics > Dynamics > Sediment dynamics
    Sedimentary structures > Mud flats
    ANE, Netherlands, Westerschelde, PaulinaPolder
    Marine/Coastal
Author keywords
    Benthic community recovery; Macrofauna-meiofauna interactions; Sediment dynamics; Hypoxia; Intertidal mudflat; Westerschelde estuary; The Netherlands

Authors  Top 
  • Van Colen, C., more
  • Montserrat, F., more
  • Verbist, K.
  • Herman, P.M.J., more
  • Degraer, S., more
  • Ysebaert, T.J., more

Abstract
    To assess the role of macrofauna-mediated sediment changes on nematode community recovery, we examined the temporal development of macrobenthos, nematode communities and sediment properties following hypoxia in 16 m2 replicated plots over a 6 mo period. Hypoxia drastically changed nematode community composition (i.e. reduced diversity and abundances of all dominant nematodes, except Odontophora spp.), but complete mortality, as was the case for the macrobenthos, did not occur. Macrofauna diversity recovered slowly, but community composition approached that of control communities after several months. In contrast, nematode diversity recovered to control values within 1 mo but, subsequently, decreased again; hence, no clear convergence towards the control community composition was apparent. This diversity decline and lack of community recovery was mainly attributed to abundance overshoots of the epistrate feeding nematodes Chromadora spp., Daptonema spp. and Ptycholaimellus ponticus in the treatments, which dominated the treatment community after 2 mo. Nematode community reassembling was strongly related to the coupled macrobenthos- environmental temporal development. The dynamics of 2 sediment characteristics, which were both mediated by the colonizing macrobenthos, are presented as possible determinant factors for this relationship: (1) low nematode post-settlement resuspension resulting from stable sediments at early macrofauna recovery stages and (2) enhanced nematode reproduction and settlement success in a dense microphytobenthos mat in relation to the temporal variation in macrobenthos grazing pressure and bioturbation. In conclusion, the strong relationships between macrobenthos recovery, environmental development and nematode community development after hypoxia highlight the importance of macrobenthos-sediment interactions in the recovery and structuring of nematode communities.

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