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Tidal flat nematode responses to hypoxia and subsequent macrofauna-mediated alterations of sediment properties

Carl Van Colen UGent, Francesc Montserrat, Katleen Verbist, Magda Vincx UGent, Maaike Steyaert, Jan Vanaverbeke UGent, Peter MJ Herman, Steven Degraer UGent and Tom Ysebaert (2009) MARINE ECOLOGY-PROGRESS SERIES. 381. p.189-197
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 m(2) 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.
Please use this url to cite or link to this publication:
author
organization
year
type
journalArticle (original)
publication status
published
subject
keyword
HABITAT, RECOLONIZATION, ECOLOGY, COLONIZATION, MEIOFAUNA, ORGANIC ENRICHMENT, COMMUNITY STRUCTURE, MARINE NEMATODES, The Netherlands, Westerschelde estuary, Intertidal mudflat, Hypoxia, Sediment dynamics, Benthic community recovery, Macrofauna-meiofauna interactions, BIODIVERSITY, ASSEMBLAGES
journal title
MARINE ECOLOGY-PROGRESS SERIES
Mar. Ecol.-Prog. Ser.
volume
381
pages
189 - 197
Web of Science type
Article
Web of Science id
000266150000017
JCR category
MARINE & FRESHWATER BIOLOGY
JCR impact factor
2.519 (2009)
JCR rank
11/88 (2009)
JCR quartile
1 (2009)
ISSN
0171-8630
DOI
10.3354/meps07914
language
English
UGent publication?
yes
classification
A1
copyright statement
I have transferred the copyright for this publication to the publisher
id
921123
handle
http://hdl.handle.net/1854/LU-921123
date created
2010-04-06 13:44:00
date last changed
2010-04-26 11:35:58
@article{921123,
  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 m(2) 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.},
  author       = {Van Colen, Carl and Montserrat, Francesc and Verbist, Katleen and Vincx, Magda and Steyaert, Maaike and Vanaverbeke, Jan and Herman, Peter MJ and Degraer, Steven and Ysebaert, Tom},
  issn         = {0171-8630},
  journal      = {MARINE ECOLOGY-PROGRESS SERIES},
  keyword      = {HABITAT,RECOLONIZATION,ECOLOGY,COLONIZATION,MEIOFAUNA,ORGANIC ENRICHMENT,COMMUNITY STRUCTURE,MARINE NEMATODES,The Netherlands,Westerschelde estuary,Intertidal mudflat,Hypoxia,Sediment dynamics,Benthic community recovery,Macrofauna-meiofauna interactions,BIODIVERSITY,ASSEMBLAGES},
  language     = {eng},
  pages        = {189--197},
  title        = {Tidal flat nematode responses to hypoxia and subsequent macrofauna-mediated alterations of sediment properties},
  url          = {http://dx.doi.org/10.3354/meps07914},
  volume       = {381},
  year         = {2009},
}

Chicago
Van Colen, Carl, Francesc Montserrat, Katleen Verbist, Magda Vincx, Maaike Steyaert, Jan Vanaverbeke, Peter MJ Herman, Steven Degraer, and Tom Ysebaert. 2009. “Tidal Flat Nematode Responses to Hypoxia and Subsequent Macrofauna-mediated Alterations of Sediment Properties.” Marine Ecology-progress Series 381: 189–197.
APA
Van Colen, C., Montserrat, F., Verbist, K., Vincx, M., Steyaert, M., Vanaverbeke, J., Herman, P. M., et al. (2009). Tidal flat nematode responses to hypoxia and subsequent macrofauna-mediated alterations of sediment properties. MARINE ECOLOGY-PROGRESS SERIES, 381, 189–197.
Vancouver
1.
Van Colen C, Montserrat F, Verbist K, Vincx M, Steyaert M, Vanaverbeke J, et al. Tidal flat nematode responses to hypoxia and subsequent macrofauna-mediated alterations of sediment properties. MARINE ECOLOGY-PROGRESS SERIES. 2009;381:189–97.
MLA
Van Colen, Carl, Francesc Montserrat, Katleen Verbist, et al. “Tidal Flat Nematode Responses to Hypoxia and Subsequent Macrofauna-mediated Alterations of Sediment Properties.” MARINE ECOLOGY-PROGRESS SERIES 381 (2009): 189–197. Print.