Controls on planktonic foraminifera apparent calcification depths for the northern equatorial Indian Ocean
Within the world’s oceans, regionally distinct ecological niches develop due to differences in water temperature, nutrients, food availability, predation and light intensity. This results in differences in the vertical dispersion of planktonic foraminifera on the global scale. Understanding the cont...
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ftoceanrep:oai:oceanrep.geomar.de:60127 2024-04-21T08:10:32+00:00 Controls on planktonic foraminifera apparent calcification depths for the northern equatorial Indian Ocean Stainbank, Stephanie Kroon, Dick Rüggeberg, Andres Raddatz, Jacek de Leau, Erica S. Zhang, Manlin Spezzaferri, Silvia Ganssen, Gerald 2019-09-12 text https://oceanrep.geomar.de/id/eprint/60127/ https://oceanrep.geomar.de/id/eprint/60127/1/document.pdf https://doi.org/10.1371/journal.pone.0222299 en eng PLOS https://oceanrep.geomar.de/id/eprint/60127/1/document.pdf Stainbank, S., Kroon, D., Rüggeberg, A., Raddatz, J., de Leau, E. S., Zhang, M., Spezzaferri, S. and Ganssen, G. (2019) Controls on planktonic foraminifera apparent calcification depths for the northern equatorial Indian Ocean. Open Access PLOS ONE, 14 (9). Art.Nr. e0222299. DOI 10.1371/journal.pone.0222299 <https://doi.org/10.1371/journal.pone.0222299>. doi:10.1371/journal.pone.0222299 info:eu-repo/semantics/openAccess Article PeerReviewed 2019 ftoceanrep https://doi.org/10.1371/journal.pone.0222299 2024-03-27T17:48:37Z Within the world’s oceans, regionally distinct ecological niches develop due to differences in water temperature, nutrients, food availability, predation and light intensity. This results in differences in the vertical dispersion of planktonic foraminifera on the global scale. Understanding the controls on these modern-day distributions is important when using these organisms for paleoceanographic reconstructions. As such, this study constrains modern depth habitats for the northern equatorial Indian Ocean, for 14 planktonic foraminiferal species (G. ruber, G. elongatus, G. pyramidalis, G. rubescens, T. sacculifer, G. siphonifera, G. glutinata, N. dutertrei, G. bulloides, G. ungulata, P. obliquiloculata, G. menardii, G. hexagonus, G. scitula) using stable isotopic signatures (δ18O and δ13C) and Mg/Ca ratios. We evaluate two aspects of inferred depth habitats: (1) the significance of the apparent calcification depth (ACD) calculation method/equations and (2) regional species-specific ACD controls. Through a comparison with five global, (sub)tropical studies we found the choice of applied equation and δ18Osw significant and an important consideration when comparing with the published literature. The ACDs of the surface mixed layer and thermocline species show a tight clustering between 73–109 m water depth coinciding with the deep chlorophyll maximum (DCM). Furthermore, the ACDs for the sub-thermocline species are positioned relative to secondary peaks in the local primary production. We surmise that food source plays a key role in the relative living depths for the majority of the investigated planktonic foraminifera within this oligotrophic environment of the Maldives and elsewhere in the tropical oceans. Article in Journal/Newspaper Planktonic foraminifera OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) PLOS ONE 14 9 e0222299 |
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Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
op_collection_id |
ftoceanrep |
language |
English |
description |
Within the world’s oceans, regionally distinct ecological niches develop due to differences in water temperature, nutrients, food availability, predation and light intensity. This results in differences in the vertical dispersion of planktonic foraminifera on the global scale. Understanding the controls on these modern-day distributions is important when using these organisms for paleoceanographic reconstructions. As such, this study constrains modern depth habitats for the northern equatorial Indian Ocean, for 14 planktonic foraminiferal species (G. ruber, G. elongatus, G. pyramidalis, G. rubescens, T. sacculifer, G. siphonifera, G. glutinata, N. dutertrei, G. bulloides, G. ungulata, P. obliquiloculata, G. menardii, G. hexagonus, G. scitula) using stable isotopic signatures (δ18O and δ13C) and Mg/Ca ratios. We evaluate two aspects of inferred depth habitats: (1) the significance of the apparent calcification depth (ACD) calculation method/equations and (2) regional species-specific ACD controls. Through a comparison with five global, (sub)tropical studies we found the choice of applied equation and δ18Osw significant and an important consideration when comparing with the published literature. The ACDs of the surface mixed layer and thermocline species show a tight clustering between 73–109 m water depth coinciding with the deep chlorophyll maximum (DCM). Furthermore, the ACDs for the sub-thermocline species are positioned relative to secondary peaks in the local primary production. We surmise that food source plays a key role in the relative living depths for the majority of the investigated planktonic foraminifera within this oligotrophic environment of the Maldives and elsewhere in the tropical oceans. |
format |
Article in Journal/Newspaper |
author |
Stainbank, Stephanie Kroon, Dick Rüggeberg, Andres Raddatz, Jacek de Leau, Erica S. Zhang, Manlin Spezzaferri, Silvia Ganssen, Gerald |
spellingShingle |
Stainbank, Stephanie Kroon, Dick Rüggeberg, Andres Raddatz, Jacek de Leau, Erica S. Zhang, Manlin Spezzaferri, Silvia Ganssen, Gerald Controls on planktonic foraminifera apparent calcification depths for the northern equatorial Indian Ocean |
author_facet |
Stainbank, Stephanie Kroon, Dick Rüggeberg, Andres Raddatz, Jacek de Leau, Erica S. Zhang, Manlin Spezzaferri, Silvia Ganssen, Gerald |
author_sort |
Stainbank, Stephanie |
title |
Controls on planktonic foraminifera apparent calcification depths for the northern equatorial Indian Ocean |
title_short |
Controls on planktonic foraminifera apparent calcification depths for the northern equatorial Indian Ocean |
title_full |
Controls on planktonic foraminifera apparent calcification depths for the northern equatorial Indian Ocean |
title_fullStr |
Controls on planktonic foraminifera apparent calcification depths for the northern equatorial Indian Ocean |
title_full_unstemmed |
Controls on planktonic foraminifera apparent calcification depths for the northern equatorial Indian Ocean |
title_sort |
controls on planktonic foraminifera apparent calcification depths for the northern equatorial indian ocean |
publisher |
PLOS |
publishDate |
2019 |
url |
https://oceanrep.geomar.de/id/eprint/60127/ https://oceanrep.geomar.de/id/eprint/60127/1/document.pdf https://doi.org/10.1371/journal.pone.0222299 |
genre |
Planktonic foraminifera |
genre_facet |
Planktonic foraminifera |
op_relation |
https://oceanrep.geomar.de/id/eprint/60127/1/document.pdf Stainbank, S., Kroon, D., Rüggeberg, A., Raddatz, J., de Leau, E. S., Zhang, M., Spezzaferri, S. and Ganssen, G. (2019) Controls on planktonic foraminifera apparent calcification depths for the northern equatorial Indian Ocean. Open Access PLOS ONE, 14 (9). Art.Nr. e0222299. DOI 10.1371/journal.pone.0222299 <https://doi.org/10.1371/journal.pone.0222299>. doi:10.1371/journal.pone.0222299 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1371/journal.pone.0222299 |
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PLOS ONE |
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14 |
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9 |
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e0222299 |
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1796952016936763392 |