Macrofaunal Communities in the Wichter Ee, a Channel System in the East Frisian Wadden Sea Senckenberg am Meer 501

In March and September 1998 we investigated the macrobenthos of the Wichter Ee, a channel system in the East Frisian Wadden Sea between the islands of Baltrum and Norderney. Grab samples were taken at 20 stations scattered over the whole area. The macrofauna was assessed in terms of numerical abunda...

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Veröffentlicht in:Senckenbergiana. Senckenbergiana maritima
1. Verfasser: Nehmer, Petra (VerfasserIn)
Weitere Verfasser: Kröncke, Ingrid (VerfasserIn)
Format: UnknownFormat
Sprache:eng
Veröffentlicht: 2003
Schlagworte:
Macrofauna > benthic communities > tidal channel > sublittoral > wadden sea > Tideruinen > Wattenmeer > Nordsee
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Zusammenfassung:In March and September 1998 we investigated the macrobenthos of the Wichter Ee, a channel system in the East Frisian Wadden Sea between the islands of Baltrum and Norderney. Grab samples were taken at 20 stations scattered over the whole area. The macrofauna was assessed in terms of numerical abundance and biomass (AFDW). A total of 95 macrobenthic taxa were found, with a total mean biomass of 10.6 g/m2. The investigation focused on the temporal and spatial variability of the macrofaunal assemblages by means of community statistics such as cluster analysis and MDS ordination. Three macrofaunal communities could be determined in the Wichter Ee: community 1, occurring at the highly dynamic sandy areas of the inlet, was characterised by species such as Bathyporeia pelagiai, Scolelepis squamata, Haustorius arenarius and Paraonis fulgens. Community 3 was found at the inshore, more silty areas of the channel system and comprises species such as Heteromastus filiformis, Tubificoides benedeni, Tharyx killariensis or Scoloplos armiger and Spio martinensis. Community 2 could be described as a "transition zone", as its species inhabit the edges of the inlet as well as the smaller channels. Species found included Capitella spp., Scoloplos armiger, Spio martinensis, but also Scolelepis squamata and Magelona johnstoni. The observed community structures were discussed according to the extreme hydrodynamics prevailing in this rather shallow habitat.
Beschreibung:z.Qu
Beschreibung:7 Abb., 4 Tab.
ISSN:0080-889X