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Composition, distribution and biomass of meiobenthos in the Oosterschelde estuary (SW Netherlands)

Nicole Smol UGent, Kris A Willems, Jan CR Govaere and AJJ Sandee (1994) HYDROBIOLOGIA. 282-283. p.197-217
abstract
Meiofauna composition, abundance, biomass, distribution and diversity were investigated for 31 stations in summer. The sampling covered the whole Oosterschelde and comparisons between the subtidal - intertidal and between the western-central - eastern compartment were made. Meiofauna had a community density ranging between 200 and 17 500 ind 10 CM-2, corresponding to a dry weight of 0.2 and 8.4 gm-2 . Abundance ranged between 130 and 17 200 ind 10 CM-2 for nematodes and between 10 and 1600 ind 10 cm-2 for copepods. Dry weight biomass of these taxa was between 0.5-7.0 gm-2 and 0.008-0.3 gm-2 for nematodes and copepods respectively. The meiofauna was strongly dominated by the nematodes (36-99%), who's abundance, biomass and diversity were significantly higher intertidally than subtidally and significantly higher in the eastern part than in the western part. High numbers were positively correlated with the percentage silt and negatively with the median grain size of the sand fraction. The abundance and diversity of the copepods were highest in the subtidal, but their biomass showed an inverse trend being highest on the tidal flats. The taxa diversity of the meiofauna community and species diversity of both the nematodes and the copepods were higher in subtidal stations than on tidal flats. In the subtidal, the meiofauna and copepod diversity decreased from west to east, whereas nematode diversity increased. The vertical profile clearly reflected the sediment characteristics and could be explained by local hydrodynamic conditions. Seasonal variation was pronounced for the different taxa with peak abundance in spring, summer or autumn and minimum abundance in winter. Changes in tidal amplitude and current velocity enhanced by the storm-surge barrier will alter the meiofauna community structure. As a result meiofauna will become more important in terms of density and biomass, mainly due to increasing numbers of nematodes, increasing bioturbation, nutrient mineralisation and sustaining bacterial growth. A general decrease in meiofauna diversity is predicted. The number of copepods is expected to decrease and interstitial species will be replaced by epibenthic species, the latter being more important in terms of biomass and as food for the epibenthic macrofauna and fishes.
Please use this url to cite or link to this publication:
author
organization
year
type
journalArticle (original)
publication status
published
subject
keyword
POPULATIONS, POLLUTION, MEIOFAUNA, MARINE-SEDIMENTS, HARPACTICOID COPEPODS, HUNTER-RIVER-ESTUARY, OOSTERSCHELDE ESTUARY, SEASONAL VARIATION, BIOMASS, DISTRIBUTION, FOOD, COMMUNITY, BACTERIAL, DIVERSITY
journal title
HYDROBIOLOGIA
Hydrobiologia
volume
282-283
pages
197 - 217
Web of Science type
Article
ISSN
0018-8158
DOI
10.1007/BF00024631
language
English
UGent publication?
yes
classification
A1
id
198141
handle
http://hdl.handle.net/1854/LU-198141
date created
2004-01-14 13:42:00
date last changed
2016-12-19 15:39:01
@article{198141,
  abstract     = {Meiofauna composition, abundance, biomass, distribution and diversity were investigated for 31 stations in summer. The sampling covered the whole Oosterschelde and comparisons between the subtidal - intertidal and between the western-central - eastern compartment were made.
Meiofauna had a community density ranging between 200 and 17 500 ind 10 CM-2, corresponding to a dry weight of 0.2 and 8.4 gm-2 . Abundance ranged between 130 and 17 200 ind 10 CM-2 for nematodes and between 10 and 1600 ind 10 cm-2 for copepods. Dry weight biomass of these taxa was between 0.5-7.0 gm-2 and 0.008-0.3 gm-2 for nematodes and copepods respectively.
The meiofauna was strongly dominated by the nematodes (36-99\%), who's abundance, biomass and diversity were significantly higher intertidally than subtidally and significantly higher in the eastern part than in the western part. High numbers were positively correlated with the percentage silt and negatively with the median grain size of the sand fraction. The abundance and diversity of the copepods were highest in the subtidal, but their biomass showed an inverse trend being highest on the tidal flats.
The taxa diversity of the meiofauna community and species diversity of both the nematodes and the copepods were higher in subtidal stations than on tidal flats. In the subtidal, the meiofauna and copepod diversity decreased from west to east, whereas nematode diversity increased.
The vertical profile clearly reflected the sediment characteristics and could be explained by local hydrodynamic conditions.
Seasonal variation was pronounced for the different taxa with peak abundance in spring, summer or autumn and minimum abundance in winter.
Changes in tidal amplitude and current velocity enhanced by the storm-surge barrier will alter the meiofauna community structure. As a result meiofauna will become more important in terms of density and biomass, mainly due to increasing numbers of nematodes, increasing bioturbation, nutrient mineralisation and sustaining bacterial growth. A general decrease in meiofauna diversity is predicted. The number of copepods is expected to decrease and interstitial species will be replaced by epibenthic species, the latter being more important in terms of biomass and as food for the epibenthic macrofauna and fishes.},
  author       = {Smol, Nicole and Willems, Kris A and Govaere, Jan CR and Sandee, AJJ},
  issn         = {0018-8158},
  journal      = {HYDROBIOLOGIA},
  keyword      = {POPULATIONS,POLLUTION,MEIOFAUNA,MARINE-SEDIMENTS,HARPACTICOID COPEPODS,HUNTER-RIVER-ESTUARY,OOSTERSCHELDE ESTUARY,SEASONAL VARIATION,BIOMASS,DISTRIBUTION,FOOD,COMMUNITY,BACTERIAL,DIVERSITY},
  language     = {eng},
  pages        = {197--217},
  title        = {Composition, distribution and biomass of meiobenthos in the Oosterschelde estuary (SW Netherlands)},
  url          = {http://dx.doi.org/10.1007/BF00024631},
  volume       = {282-283},
  year         = {1994},
}

Chicago
Smol, Nicole, Kris A Willems, Jan CR Govaere, and AJJ Sandee. 1994. “Composition, Distribution and Biomass of Meiobenthos in the Oosterschelde Estuary (SW Netherlands).” Hydrobiologia 282-283: 197–217.
APA
Smol, N., Willems, K. A., Govaere, J. C., & Sandee, A. (1994). Composition, distribution and biomass of meiobenthos in the Oosterschelde estuary (SW Netherlands). HYDROBIOLOGIA, 282-283, 197–217.
Vancouver
1.
Smol N, Willems KA, Govaere JC, Sandee A. Composition, distribution and biomass of meiobenthos in the Oosterschelde estuary (SW Netherlands). HYDROBIOLOGIA. 1994;282-283:197–217.
MLA
Smol, Nicole, Kris A Willems, Jan CR Govaere, et al. “Composition, Distribution and Biomass of Meiobenthos in the Oosterschelde Estuary (SW Netherlands).” HYDROBIOLOGIA 282-283 (1994): 197–217. Print.