Late Glacial to Recent distribution pattern of deep-water Uvigerina species in the northeastern Atlantic
Phases with massive abundances of Uvigerina species recorded in North Atlantic deep-sea cores were previously attributed to water mass properties or to extended high productivity during the last Glacial. We investigated the Uvigerina distribution in 53 sediment cores and 555 surface samples from the...
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Online Access: | https://oceanrep.geomar.de/id/eprint/1719/ https://oceanrep.geomar.de/id/eprint/1719/1/Sch%C3%B6nfeld_Altenbach.pdf https://doi.org/10.1016/j.marmicro.2005.05.004 |
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ftoceanrep:oai:oceanrep.geomar.de:1719 2024-09-30T14:39:48+00:00 Late Glacial to Recent distribution pattern of deep-water Uvigerina species in the northeastern Atlantic Schönfeld, Joachim Altenbach, Alexander Volker 2005 text https://oceanrep.geomar.de/id/eprint/1719/ https://oceanrep.geomar.de/id/eprint/1719/1/Sch%C3%B6nfeld_Altenbach.pdf https://doi.org/10.1016/j.marmicro.2005.05.004 en eng Elsevier https://oceanrep.geomar.de/id/eprint/1719/1/Sch%C3%B6nfeld_Altenbach.pdf Schönfeld, J. and Altenbach, A. V. (2005) Late Glacial to Recent distribution pattern of deep-water Uvigerina species in the northeastern Atlantic. Marine Micropaleontology, 57 (1-2). pp. 1-24. DOI 10.1016/j.marmicro.2005.05.004 <https://doi.org/10.1016/j.marmicro.2005.05.004>. doi:10.1016/j.marmicro.2005.05.004 info:eu-repo/semantics/restrictedAccess Article PeerReviewed 2005 ftoceanrep https://doi.org/10.1016/j.marmicro.2005.05.004 2024-09-04T05:04:40Z Phases with massive abundances of Uvigerina species recorded in North Atlantic deep-sea cores were previously attributed to water mass properties or to extended high productivity during the last Glacial. We investigated the Uvigerina distribution in 53 sediment cores and 555 surface samples from the north-eastern Atlantic ranging from 308 to 708N and 1 to 4410 m water depth. Our results showed that Uvigerina pigmea dominated in late Pleistocene assemblages whereas Uvigerina peregrina and Uvigerina peregrina parva were common during the Holocene. Uvigerina pigmea lives today in the Gulf of Guinea and South Atlantic only (98N to 178S), but was present up to 548N during the Last Glacial Maximum. The species retreated north- and southwards during Termination I and disappeared in the north-eastern Atlantic off northern Portugal 6100 years ago. Uvigerina peregrina and U. peregrina parva spread out from isolated occurrences along the continental slope off western Iberia at the onset of Termination I. Uvigerina peregrina exhibited Recent abundance maxima at Goban Spur, Plateau des Landes, and the Iberian Margin. These areas are subjected to strong lateral advection by downslope transport and sediment focusing. The actual flux rate of particulate organic matter is locally raised by a factor of 4 to 5. Comparable flux rates were otherwise recorded at U. peregrina maxima under the NW-African coastal upwelling regime. The Recent distribution of U. pigmea and evidence from sediment cores show an organic carbon flux of 3.5 g C m-2 yr-1 as minimum for a sustainable population of this species. Alkenone, pigment and planktonic foraminiferal records from cores MD952039 and MD952040 revealed that a spring bloom dominated productivity dynamics and a balanced food particle composition of haptophyteae algae and diatoms were limiting environmental factors for U. pigmea during the Pleistocene. A widespread change from glacial to modern productivity characteristics during the last Deglaciation may have triggered the early Holocene ... Article in Journal/Newspaper North Atlantic OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Marine Micropaleontology 57 1-2 1 24 |
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Open Polar |
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OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
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ftoceanrep |
language |
English |
description |
Phases with massive abundances of Uvigerina species recorded in North Atlantic deep-sea cores were previously attributed to water mass properties or to extended high productivity during the last Glacial. We investigated the Uvigerina distribution in 53 sediment cores and 555 surface samples from the north-eastern Atlantic ranging from 308 to 708N and 1 to 4410 m water depth. Our results showed that Uvigerina pigmea dominated in late Pleistocene assemblages whereas Uvigerina peregrina and Uvigerina peregrina parva were common during the Holocene. Uvigerina pigmea lives today in the Gulf of Guinea and South Atlantic only (98N to 178S), but was present up to 548N during the Last Glacial Maximum. The species retreated north- and southwards during Termination I and disappeared in the north-eastern Atlantic off northern Portugal 6100 years ago. Uvigerina peregrina and U. peregrina parva spread out from isolated occurrences along the continental slope off western Iberia at the onset of Termination I. Uvigerina peregrina exhibited Recent abundance maxima at Goban Spur, Plateau des Landes, and the Iberian Margin. These areas are subjected to strong lateral advection by downslope transport and sediment focusing. The actual flux rate of particulate organic matter is locally raised by a factor of 4 to 5. Comparable flux rates were otherwise recorded at U. peregrina maxima under the NW-African coastal upwelling regime. The Recent distribution of U. pigmea and evidence from sediment cores show an organic carbon flux of 3.5 g C m-2 yr-1 as minimum for a sustainable population of this species. Alkenone, pigment and planktonic foraminiferal records from cores MD952039 and MD952040 revealed that a spring bloom dominated productivity dynamics and a balanced food particle composition of haptophyteae algae and diatoms were limiting environmental factors for U. pigmea during the Pleistocene. A widespread change from glacial to modern productivity characteristics during the last Deglaciation may have triggered the early Holocene ... |
format |
Article in Journal/Newspaper |
author |
Schönfeld, Joachim Altenbach, Alexander Volker |
spellingShingle |
Schönfeld, Joachim Altenbach, Alexander Volker Late Glacial to Recent distribution pattern of deep-water Uvigerina species in the northeastern Atlantic |
author_facet |
Schönfeld, Joachim Altenbach, Alexander Volker |
author_sort |
Schönfeld, Joachim |
title |
Late Glacial to Recent distribution pattern of deep-water Uvigerina species in the northeastern Atlantic |
title_short |
Late Glacial to Recent distribution pattern of deep-water Uvigerina species in the northeastern Atlantic |
title_full |
Late Glacial to Recent distribution pattern of deep-water Uvigerina species in the northeastern Atlantic |
title_fullStr |
Late Glacial to Recent distribution pattern of deep-water Uvigerina species in the northeastern Atlantic |
title_full_unstemmed |
Late Glacial to Recent distribution pattern of deep-water Uvigerina species in the northeastern Atlantic |
title_sort |
late glacial to recent distribution pattern of deep-water uvigerina species in the northeastern atlantic |
publisher |
Elsevier |
publishDate |
2005 |
url |
https://oceanrep.geomar.de/id/eprint/1719/ https://oceanrep.geomar.de/id/eprint/1719/1/Sch%C3%B6nfeld_Altenbach.pdf https://doi.org/10.1016/j.marmicro.2005.05.004 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
https://oceanrep.geomar.de/id/eprint/1719/1/Sch%C3%B6nfeld_Altenbach.pdf Schönfeld, J. and Altenbach, A. V. (2005) Late Glacial to Recent distribution pattern of deep-water Uvigerina species in the northeastern Atlantic. Marine Micropaleontology, 57 (1-2). pp. 1-24. DOI 10.1016/j.marmicro.2005.05.004 <https://doi.org/10.1016/j.marmicro.2005.05.004>. doi:10.1016/j.marmicro.2005.05.004 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1016/j.marmicro.2005.05.004 |
container_title |
Marine Micropaleontology |
container_volume |
57 |
container_issue |
1-2 |
container_start_page |
1 |
op_container_end_page |
24 |
_version_ |
1811642391950524416 |