Benthic foraminifera in a deep-sea high-energy environment: the Moira Mounds (Porcupine Seabight, SW of Ireland)
Cold-water coral ecosystems represent unique and exceptionally diverse environments in the deep-sea. They are well developed along the Irish margin, varying broadly in shape and size. The Moira Mounds, numerous small-sized mounds, are nestled in the Belgica Mound Province (Porcupine Seabight, North-...
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ftreroch:oai:doc.rero.ch:20181120100737-DW 2023-05-15T17:38:28+02:00 Benthic foraminifera in a deep-sea high-energy environment: the Moira Mounds (Porcupine Seabight, SW of Ireland) Fentimen, Robin Rüggeberg, Andres Lim, Aaron El Kateb, Akram Foubert, Anneleen Wheeler, Andrew J. Spezzaferri, Silvia 2018-11-20T09:11:37Z http://doc.rero.ch/record/323357/files/fou_bfd.pdf http://doc.rero.ch/record/323357/files/fou_bfd_sm.pdf eng eng http://doc.rero.ch/record/323357/files/fou_bfd.pdf http://doc.rero.ch/record/323357/files/fou_bfd_sm.pdf 2018 ftreroch 2023-02-16T17:32:54Z Cold-water coral ecosystems represent unique and exceptionally diverse environments in the deep-sea. They are well developed along the Irish margin, varying broadly in shape and size. The Moira Mounds, numerous small-sized mounds, are nestled in the Belgica Mound Province (Porcupine Seabight, North-East Atlantic). The investigation of living (Rose Bengal stained) and dead benthic foraminiferal assemblages from these mounds allowed to describe their distribution patterns and to evaluate their response to environmental variability. Quantitative data was statistically treated to define groups of species/genera associated to specific habitats. The Moira Mounds differ from their larger neighbours by the reduced spatial variability of benthic foraminiferal assemblages, living assemblages only distinguishing coral-rich and coral-barren areas. The ecological needs of corals are highlighted by the abundance of Alabaminella weddellensis and Nonionella iridea, phytodetritus-feeding species in coral supporting sediments. Living foraminifera in sediments from the Moira Mounds concentrate in the upper first centimetre. Infaunal species may be affected by bioturbation and/or reworking by the strong currents in the area. Dead foraminiferal assemblages from the Moira Mounds resemble those described for the sandwave facies in adjacent giant mounds, suggesting similar processes in facies deposition. Other/Unknown Material North East Atlantic RERO DOC Digital Library Porcupine Seabight ENVELOPE(-13.000,-13.000,50.500,50.500) |
institution |
Open Polar |
collection |
RERO DOC Digital Library |
op_collection_id |
ftreroch |
language |
English |
description |
Cold-water coral ecosystems represent unique and exceptionally diverse environments in the deep-sea. They are well developed along the Irish margin, varying broadly in shape and size. The Moira Mounds, numerous small-sized mounds, are nestled in the Belgica Mound Province (Porcupine Seabight, North-East Atlantic). The investigation of living (Rose Bengal stained) and dead benthic foraminiferal assemblages from these mounds allowed to describe their distribution patterns and to evaluate their response to environmental variability. Quantitative data was statistically treated to define groups of species/genera associated to specific habitats. The Moira Mounds differ from their larger neighbours by the reduced spatial variability of benthic foraminiferal assemblages, living assemblages only distinguishing coral-rich and coral-barren areas. The ecological needs of corals are highlighted by the abundance of Alabaminella weddellensis and Nonionella iridea, phytodetritus-feeding species in coral supporting sediments. Living foraminifera in sediments from the Moira Mounds concentrate in the upper first centimetre. Infaunal species may be affected by bioturbation and/or reworking by the strong currents in the area. Dead foraminiferal assemblages from the Moira Mounds resemble those described for the sandwave facies in adjacent giant mounds, suggesting similar processes in facies deposition. |
author |
Fentimen, Robin Rüggeberg, Andres Lim, Aaron El Kateb, Akram Foubert, Anneleen Wheeler, Andrew J. Spezzaferri, Silvia |
spellingShingle |
Fentimen, Robin Rüggeberg, Andres Lim, Aaron El Kateb, Akram Foubert, Anneleen Wheeler, Andrew J. Spezzaferri, Silvia Benthic foraminifera in a deep-sea high-energy environment: the Moira Mounds (Porcupine Seabight, SW of Ireland) |
author_facet |
Fentimen, Robin Rüggeberg, Andres Lim, Aaron El Kateb, Akram Foubert, Anneleen Wheeler, Andrew J. Spezzaferri, Silvia |
author_sort |
Fentimen, Robin |
title |
Benthic foraminifera in a deep-sea high-energy environment: the Moira Mounds (Porcupine Seabight, SW of Ireland) |
title_short |
Benthic foraminifera in a deep-sea high-energy environment: the Moira Mounds (Porcupine Seabight, SW of Ireland) |
title_full |
Benthic foraminifera in a deep-sea high-energy environment: the Moira Mounds (Porcupine Seabight, SW of Ireland) |
title_fullStr |
Benthic foraminifera in a deep-sea high-energy environment: the Moira Mounds (Porcupine Seabight, SW of Ireland) |
title_full_unstemmed |
Benthic foraminifera in a deep-sea high-energy environment: the Moira Mounds (Porcupine Seabight, SW of Ireland) |
title_sort |
benthic foraminifera in a deep-sea high-energy environment: the moira mounds (porcupine seabight, sw of ireland) |
publishDate |
2018 |
url |
http://doc.rero.ch/record/323357/files/fou_bfd.pdf http://doc.rero.ch/record/323357/files/fou_bfd_sm.pdf |
long_lat |
ENVELOPE(-13.000,-13.000,50.500,50.500) |
geographic |
Porcupine Seabight |
geographic_facet |
Porcupine Seabight |
genre |
North East Atlantic |
genre_facet |
North East Atlantic |
op_relation |
http://doc.rero.ch/record/323357/files/fou_bfd.pdf http://doc.rero.ch/record/323357/files/fou_bfd_sm.pdf |
_version_ |
1766138922091413504 |