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one publication added to basket [211551]
Recent benthic foraminiferal assemblages from cold-water coral mounds in the Porcupine Seabight
Schönfeld, J.; Dullo, W.-C.; Pfannkuche, O.; Freiwald, A.; Rüggeberg, A.; Schmidt, S.; Weston, J. (2011). Recent benthic foraminiferal assemblages from cold-water coral mounds in the Porcupine Seabight. Facies 57(2): 187-213. dx.doi.org/10.1007/s10347-010-0234-0
In: Facies. Springer: Heidelberg; Berlin. ISSN 0172-9179; e-ISSN 1612-4820
Peer reviewed article  

Available in  Authors 

Keywords
    Foraminifera [WoRMS]
    Marine/Coastal
Author keywords
    Benthic foraminifera; Epizoans; Cold-water coral ecosystems; Carbonate mound

Authors  Top 
  • Schönfeld, J.
  • Dullo, W.-C.
  • Pfannkuche, O.
  • Freiwald, A.
  • Rüggeberg, A.
  • Schmidt, S.
  • Weston, J.

Abstract
    Cold-water coral ecosystems are characterised by a high diversity and population density. Living and dead foraminiferal assemblages from 20 surface sediment samples from Galway and Propeller Mounds were analysed to describe the distribution patterns of benthic foraminifera on coral mounds in relation to different sedimentary facies. Hard substrates were examined to assess the foraminiferal microhabitats and diversities in the coral framework. We recognised 131 different species, of which 27 prefer an attached lifestyle. Epibenthic species are the main constituents of the living and dead foraminiferal assemblages. The frequent species Discanomalina coronata was associated with coral rubble, Cibicides refulgens showed preference to the off-mound sand veneer, and Uvigerina mediterranea displayed abundance maxima in the main depositional area on the southern flank of Galway Mound, and in the muds around Propeller Mound. The distribution of these species is rather governed by their specific ecological demands and microhabitat availability than by the sedimentary facies. Benthic foraminiferal assemblages from coral mounds fit well into basin-wide-scale distribution patterns of species along the western European continental margin. The diversity of the foraminiferal faunas is not higher on the carbonate mounds as in their vicinity. The living assemblages show a broad mid-slope diversity maximum between 500 and 1,300 m water depth, which is the depth interval of coral mound formation at the Celtic and Amorican Margin. The foraminiferal diversity maximum is about 700 m shallower than comparable maxima of nematodes and bivalves. This suggests that different processes are driving the foraminiferal and metazoan diversity patterns.

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