Shell flux and oxygen isotope data of North Atlantic foraminifera
We present an almost 3 year long time series of shell fluxes and oxygen isotopes of left-coiling Neogloboquadrina pachyderma and Turborotalita quinqueloba from sediment traps moored in the deep central Irminger Sea. We determined their response to the seasonal change from a deeply mixed water column...
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2010
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Online Access: | https://doi.pangaea.de/10.1594/PANGAEA.753860 https://doi.org/10.1594/PANGAEA.753860 |
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.753860 2023-05-15T17:14:58+02:00 Shell flux and oxygen isotope data of North Atlantic foraminifera Jonkers, Lukas Brummer, Geert-Jan A Peeters, Frank J C van Aken, Hendrik M de Jong, M Femke MEDIAN LATITUDE: 59.280300 * MEDIAN LONGITUDE: -39.393100 * SOUTH-BOUND LATITUDE: 59.247500 * WEST-BOUND LONGITUDE: -39.657800 * NORTH-BOUND LATITUDE: 59.345700 * EAST-BOUND LONGITUDE: -38.863700 * DATE/TIME START: 2003-08-31T00:00:00 * DATE/TIME END: 2007-05-19T00:00:00 * MINIMUM ELEVATION: -3000.0 m * MAXIMUM ELEVATION: -3000.0 m 2010-11-18 text/tab-separated-values, 671 data points https://doi.pangaea.de/10.1594/PANGAEA.753860 https://doi.org/10.1594/PANGAEA.753860 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.753860 https://doi.org/10.1594/PANGAEA.753860 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Jonkers, Lukas; Brummer, Geert-Jan A; Peeters, Frank J C; van Aken, Hendrik M; de Jong, M Femke (2010): Seasonal stratification, shell flux, and oxygen isotope dynamics of left-coiling N. pachyderma and T. quinqueloba in the western subpolar North Atlantic. Paleoceanography, 25, PA2204, https://doi.org/10.1029/2009PA001849 Calcium carbonate flux Calculated see reference(s) Carbon organic Carlo Erba Flash DATE/TIME Date/time end Event label Flux of total mass Foraminifera planktic other IRM_1 IRM_3 IRM_4 Isotope ratio mass spectrometry Neogloboquadrina pachyderma sinistral δ18O Nitrogen total North Atlantic Silicon Standard error Trap sediment TRAPS Turborotalita quinqueloba Dataset 2010 ftpangaea https://doi.org/10.1594/PANGAEA.753860 https://doi.org/10.1029/2009PA001849 2023-01-20T08:51:39Z We present an almost 3 year long time series of shell fluxes and oxygen isotopes of left-coiling Neogloboquadrina pachyderma and Turborotalita quinqueloba from sediment traps moored in the deep central Irminger Sea. We determined their response to the seasonal change from a deeply mixed water column with occasional deep convection in winter to a thermally stratified water column with a surface mixed layer (SML) of around 50 m in summer. Both species display very low fluxes during winter with a remnant summer population holding out until replaced by a vital population that seeds the subsequent blooms. This annual population overturning is marked by a 0.7 per mill increase in d18O in both species. The shell flux of N. pachyderma peaks during the spring bloom and in late summer, when stratification is close to its minimum and maximum, respectively. Both export periods contribute about equally and account for >95% of the total annual flux. Shell fluxes of T. quinqueloba show only a single broad pulse in summer, thus following the seasonal stratification cycle. The d18O of N. pachyderma reflects temperatures just below the base of the seasonal SML without offset from isotopic equilibrium. The d18O pattern of T. quinqueloba shows a nearly identical amplitude and correlates highly with the d18O of N. pachyderma. Therefore T. quinqueloba also reflects temperature near the base of the SML but with a positive offset from isotopic equilibrium. These offsets contrast with observations elsewhere and suggest a variable offset from equilibrium calcification for both species. In the Irminger Sea the species consistently show a contrast in their flux timings. Their flux-weighted delta d18O will thus dominantly be determined by seasonal temperature differences at the base of the SML rather than by differences in their depth habitat. Consequently, their sedimentary delta d18O may be used to infer the seasonal contrast in temperature at the base of the SML. Dataset Neogloboquadrina pachyderma North Atlantic PANGAEA - Data Publisher for Earth & Environmental Science Irminger Sea ENVELOPE(-34.041,-34.041,63.054,63.054) ENVELOPE(-39.657800,-38.863700,59.345700,59.247500) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
Calcium carbonate flux Calculated see reference(s) Carbon organic Carlo Erba Flash DATE/TIME Date/time end Event label Flux of total mass Foraminifera planktic other IRM_1 IRM_3 IRM_4 Isotope ratio mass spectrometry Neogloboquadrina pachyderma sinistral δ18O Nitrogen total North Atlantic Silicon Standard error Trap sediment TRAPS Turborotalita quinqueloba |
spellingShingle |
Calcium carbonate flux Calculated see reference(s) Carbon organic Carlo Erba Flash DATE/TIME Date/time end Event label Flux of total mass Foraminifera planktic other IRM_1 IRM_3 IRM_4 Isotope ratio mass spectrometry Neogloboquadrina pachyderma sinistral δ18O Nitrogen total North Atlantic Silicon Standard error Trap sediment TRAPS Turborotalita quinqueloba Jonkers, Lukas Brummer, Geert-Jan A Peeters, Frank J C van Aken, Hendrik M de Jong, M Femke Shell flux and oxygen isotope data of North Atlantic foraminifera |
topic_facet |
Calcium carbonate flux Calculated see reference(s) Carbon organic Carlo Erba Flash DATE/TIME Date/time end Event label Flux of total mass Foraminifera planktic other IRM_1 IRM_3 IRM_4 Isotope ratio mass spectrometry Neogloboquadrina pachyderma sinistral δ18O Nitrogen total North Atlantic Silicon Standard error Trap sediment TRAPS Turborotalita quinqueloba |
description |
We present an almost 3 year long time series of shell fluxes and oxygen isotopes of left-coiling Neogloboquadrina pachyderma and Turborotalita quinqueloba from sediment traps moored in the deep central Irminger Sea. We determined their response to the seasonal change from a deeply mixed water column with occasional deep convection in winter to a thermally stratified water column with a surface mixed layer (SML) of around 50 m in summer. Both species display very low fluxes during winter with a remnant summer population holding out until replaced by a vital population that seeds the subsequent blooms. This annual population overturning is marked by a 0.7 per mill increase in d18O in both species. The shell flux of N. pachyderma peaks during the spring bloom and in late summer, when stratification is close to its minimum and maximum, respectively. Both export periods contribute about equally and account for >95% of the total annual flux. Shell fluxes of T. quinqueloba show only a single broad pulse in summer, thus following the seasonal stratification cycle. The d18O of N. pachyderma reflects temperatures just below the base of the seasonal SML without offset from isotopic equilibrium. The d18O pattern of T. quinqueloba shows a nearly identical amplitude and correlates highly with the d18O of N. pachyderma. Therefore T. quinqueloba also reflects temperature near the base of the SML but with a positive offset from isotopic equilibrium. These offsets contrast with observations elsewhere and suggest a variable offset from equilibrium calcification for both species. In the Irminger Sea the species consistently show a contrast in their flux timings. Their flux-weighted delta d18O will thus dominantly be determined by seasonal temperature differences at the base of the SML rather than by differences in their depth habitat. Consequently, their sedimentary delta d18O may be used to infer the seasonal contrast in temperature at the base of the SML. |
format |
Dataset |
author |
Jonkers, Lukas Brummer, Geert-Jan A Peeters, Frank J C van Aken, Hendrik M de Jong, M Femke |
author_facet |
Jonkers, Lukas Brummer, Geert-Jan A Peeters, Frank J C van Aken, Hendrik M de Jong, M Femke |
author_sort |
Jonkers, Lukas |
title |
Shell flux and oxygen isotope data of North Atlantic foraminifera |
title_short |
Shell flux and oxygen isotope data of North Atlantic foraminifera |
title_full |
Shell flux and oxygen isotope data of North Atlantic foraminifera |
title_fullStr |
Shell flux and oxygen isotope data of North Atlantic foraminifera |
title_full_unstemmed |
Shell flux and oxygen isotope data of North Atlantic foraminifera |
title_sort |
shell flux and oxygen isotope data of north atlantic foraminifera |
publisher |
PANGAEA |
publishDate |
2010 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.753860 https://doi.org/10.1594/PANGAEA.753860 |
op_coverage |
MEDIAN LATITUDE: 59.280300 * MEDIAN LONGITUDE: -39.393100 * SOUTH-BOUND LATITUDE: 59.247500 * WEST-BOUND LONGITUDE: -39.657800 * NORTH-BOUND LATITUDE: 59.345700 * EAST-BOUND LONGITUDE: -38.863700 * DATE/TIME START: 2003-08-31T00:00:00 * DATE/TIME END: 2007-05-19T00:00:00 * MINIMUM ELEVATION: -3000.0 m * MAXIMUM ELEVATION: -3000.0 m |
long_lat |
ENVELOPE(-34.041,-34.041,63.054,63.054) ENVELOPE(-39.657800,-38.863700,59.345700,59.247500) |
geographic |
Irminger Sea |
geographic_facet |
Irminger Sea |
genre |
Neogloboquadrina pachyderma North Atlantic |
genre_facet |
Neogloboquadrina pachyderma North Atlantic |
op_source |
Supplement to: Jonkers, Lukas; Brummer, Geert-Jan A; Peeters, Frank J C; van Aken, Hendrik M; de Jong, M Femke (2010): Seasonal stratification, shell flux, and oxygen isotope dynamics of left-coiling N. pachyderma and T. quinqueloba in the western subpolar North Atlantic. Paleoceanography, 25, PA2204, https://doi.org/10.1029/2009PA001849 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.753860 https://doi.org/10.1594/PANGAEA.753860 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.753860 https://doi.org/10.1029/2009PA001849 |
_version_ |
1766073070838087680 |