Distribution of living benthic foraminifera in the northern Chukchi Sea
This is a post-peer-review, pre-copyedit version of an article published in Arktos . The final authenticated version is available online at: https://doi.org/10.1007/s41063-018-0062-y . Living (Rose Bengal stained) benthic foraminifera were studied in the topmost sediments of five multi- and box core...
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ftunivtroemsoe:oai:munin.uit.no:10037/13892 2023-05-15T14:27:27+02:00 Distribution of living benthic foraminifera in the northern Chukchi Sea Racine, Calypso Bonnin, Jérôme Nam, Seung-Il Giraudeau, Jacques Biguenet, Maude Dessandier, Pierre-Antoine Kim, Jung‑Hyun 2018-09-27 https://hdl.handle.net/10037/13892 https://doi.org/10.1007/s41063-018-0062-y eng eng Springer Verlag (Germany) Arktos info:eu-repo/grantAgreement/RCN/SFF/223259/Norway/Centre for Arctic Gas Hydrate, Environment and Climate/CAGE/ Racine, C., Bonnin, J., Nam, S.-I., Giraudeau, J., Biguenet, M., Dessandier, P.-A. & Kim, J.-H. (2018). Distribution of living benthic foraminifera in the northern Chukchi Sea. Arktos, 4(28). https://doi.org/10.1007/s41063-018-0062-y FRIDAID 1616529 doi:10.1007/s41063-018-0062-y https://doi.org/10.1007/s41063-018-0062-y 2364-9453 2364-9461 https://hdl.handle.net/10037/13892 openAccess VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Sedimentologi: 456 VDP::Mathematics and natural science: 400::Geosciences: 450::Sedimentology: 456 Living benthic foraminifera Chukchi Sea Water masses Primary production Sea-ice Journal article Tidsskriftartikkel Peer reviewed 2018 ftunivtroemsoe https://doi.org/10.1007/s41063-018-0062-y 2021-06-25T17:56:09Z This is a post-peer-review, pre-copyedit version of an article published in Arktos . The final authenticated version is available online at: https://doi.org/10.1007/s41063-018-0062-y . Living (Rose Bengal stained) benthic foraminifera were studied in the topmost sediments of five multi- and box cores collected on the continental shelf, upper and lower slopes, of the Chukchi Sea to provide background information on modern benthic foraminiferal distribution, useful for future studies. Sediment cores were collected during August–September 2015, when the area is seasonally ice-free. Benthic foraminiferal contents in the 63–125 µm and > 125 µm size fractions are discussed in terms of water masses distribution, and sedimentological (grain size) and organic geochemical (total organic carbon, total nitrogen, C/N ratio and δ 13 Corg) characteristics of the surface sediments. Marine organic carbon-rich clay sediments characterize the faunal microhabitats. Despite relatively high organic carbon contents, standing stocks of living benthic foraminifera are generally low, especially for the 63–125 µm size fraction. This low living stock seems to reflect post-bloom conditions in August and September in the area. The reduced supply of fresh organic carbon also affects faunal microhabitats in the sediment with a concentration of living fauna in the upper 2 cm of the sediment. Over the Chukchi Sea shelf, a relatively mixed upper sediment layer likely due to bioturbation or bio-structures induces a disturbed vertical distribution in the sediment. Corrosive Pacific-derived bottom water over the shelf likely explains the relative importance of agglutinated vs. calcareous fauna in this shallow setting. Our results suggest that, in a post-bloom context, the main environmental control on benthic foraminiferal assemblages in the Chukchi Sea is the nature of the bottom water masses. Article in Journal/Newspaper Arctic Chukchi Chukchi Sea Sea ice University of Tromsø: Munin Open Research Archive Chukchi Sea Pacific arktos 4 1 1 15 |
institution |
Open Polar |
collection |
University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
topic |
VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Sedimentologi: 456 VDP::Mathematics and natural science: 400::Geosciences: 450::Sedimentology: 456 Living benthic foraminifera Chukchi Sea Water masses Primary production Sea-ice |
spellingShingle |
VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Sedimentologi: 456 VDP::Mathematics and natural science: 400::Geosciences: 450::Sedimentology: 456 Living benthic foraminifera Chukchi Sea Water masses Primary production Sea-ice Racine, Calypso Bonnin, Jérôme Nam, Seung-Il Giraudeau, Jacques Biguenet, Maude Dessandier, Pierre-Antoine Kim, Jung‑Hyun Distribution of living benthic foraminifera in the northern Chukchi Sea |
topic_facet |
VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Sedimentologi: 456 VDP::Mathematics and natural science: 400::Geosciences: 450::Sedimentology: 456 Living benthic foraminifera Chukchi Sea Water masses Primary production Sea-ice |
description |
This is a post-peer-review, pre-copyedit version of an article published in Arktos . The final authenticated version is available online at: https://doi.org/10.1007/s41063-018-0062-y . Living (Rose Bengal stained) benthic foraminifera were studied in the topmost sediments of five multi- and box cores collected on the continental shelf, upper and lower slopes, of the Chukchi Sea to provide background information on modern benthic foraminiferal distribution, useful for future studies. Sediment cores were collected during August–September 2015, when the area is seasonally ice-free. Benthic foraminiferal contents in the 63–125 µm and > 125 µm size fractions are discussed in terms of water masses distribution, and sedimentological (grain size) and organic geochemical (total organic carbon, total nitrogen, C/N ratio and δ 13 Corg) characteristics of the surface sediments. Marine organic carbon-rich clay sediments characterize the faunal microhabitats. Despite relatively high organic carbon contents, standing stocks of living benthic foraminifera are generally low, especially for the 63–125 µm size fraction. This low living stock seems to reflect post-bloom conditions in August and September in the area. The reduced supply of fresh organic carbon also affects faunal microhabitats in the sediment with a concentration of living fauna in the upper 2 cm of the sediment. Over the Chukchi Sea shelf, a relatively mixed upper sediment layer likely due to bioturbation or bio-structures induces a disturbed vertical distribution in the sediment. Corrosive Pacific-derived bottom water over the shelf likely explains the relative importance of agglutinated vs. calcareous fauna in this shallow setting. Our results suggest that, in a post-bloom context, the main environmental control on benthic foraminiferal assemblages in the Chukchi Sea is the nature of the bottom water masses. |
format |
Article in Journal/Newspaper |
author |
Racine, Calypso Bonnin, Jérôme Nam, Seung-Il Giraudeau, Jacques Biguenet, Maude Dessandier, Pierre-Antoine Kim, Jung‑Hyun |
author_facet |
Racine, Calypso Bonnin, Jérôme Nam, Seung-Il Giraudeau, Jacques Biguenet, Maude Dessandier, Pierre-Antoine Kim, Jung‑Hyun |
author_sort |
Racine, Calypso |
title |
Distribution of living benthic foraminifera in the northern Chukchi Sea |
title_short |
Distribution of living benthic foraminifera in the northern Chukchi Sea |
title_full |
Distribution of living benthic foraminifera in the northern Chukchi Sea |
title_fullStr |
Distribution of living benthic foraminifera in the northern Chukchi Sea |
title_full_unstemmed |
Distribution of living benthic foraminifera in the northern Chukchi Sea |
title_sort |
distribution of living benthic foraminifera in the northern chukchi sea |
publisher |
Springer Verlag (Germany) |
publishDate |
2018 |
url |
https://hdl.handle.net/10037/13892 https://doi.org/10.1007/s41063-018-0062-y |
geographic |
Chukchi Sea Pacific |
geographic_facet |
Chukchi Sea Pacific |
genre |
Arctic Chukchi Chukchi Sea Sea ice |
genre_facet |
Arctic Chukchi Chukchi Sea Sea ice |
op_relation |
Arktos info:eu-repo/grantAgreement/RCN/SFF/223259/Norway/Centre for Arctic Gas Hydrate, Environment and Climate/CAGE/ Racine, C., Bonnin, J., Nam, S.-I., Giraudeau, J., Biguenet, M., Dessandier, P.-A. & Kim, J.-H. (2018). Distribution of living benthic foraminifera in the northern Chukchi Sea. Arktos, 4(28). https://doi.org/10.1007/s41063-018-0062-y FRIDAID 1616529 doi:10.1007/s41063-018-0062-y https://doi.org/10.1007/s41063-018-0062-y 2364-9453 2364-9461 https://hdl.handle.net/10037/13892 |
op_rights |
openAccess |
op_doi |
https://doi.org/10.1007/s41063-018-0062-y |
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arktos |
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4 |
container_issue |
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15 |
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