Living benthic foraminifera of the Okhotsk Sea: faunal composition, standing stocks and microhabitats
Live (Rose Bengal stained) benthic foraminifera were investigated in surface sediment samples from the Okhotsk Sea to reveal the relationship between faunal characteristics and environmental parameters. Live benthic foraminifera were quantified in the size fraction > 125 µm in the upper 8 cm of r...
Published in: | Marine Micropaleontology |
---|---|
Main Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Elsevier
2008
|
Subjects: | |
Online Access: | https://oceanrep.geomar.de/id/eprint/3430/ https://oceanrep.geomar.de/id/eprint/3430/1/399_Bubenshchikova_2008_LivingBenthicForaminiferaOfThe_Artzeit_pubid10754.pdf https://doi.org/10.1016/j.marmicro.2008.09.002 |
id |
ftoceanrep:oai:oceanrep.geomar.de:3430 |
---|---|
record_format |
openpolar |
spelling |
ftoceanrep:oai:oceanrep.geomar.de:3430 2023-05-15T16:59:07+02:00 Living benthic foraminifera of the Okhotsk Sea: faunal composition, standing stocks and microhabitats Bubenshchikova, Natalia Nürnberg, Dirk Lembke-Jene, Lester Pavlova, Galina 2008 text https://oceanrep.geomar.de/id/eprint/3430/ https://oceanrep.geomar.de/id/eprint/3430/1/399_Bubenshchikova_2008_LivingBenthicForaminiferaOfThe_Artzeit_pubid10754.pdf https://doi.org/10.1016/j.marmicro.2008.09.002 en eng Elsevier https://oceanrep.geomar.de/id/eprint/3430/1/399_Bubenshchikova_2008_LivingBenthicForaminiferaOfThe_Artzeit_pubid10754.pdf Bubenshchikova, N., Nürnberg, D. , Lembke-Jene, L. and Pavlova, G. (2008) Living benthic foraminifera of the Okhotsk Sea: faunal composition, standing stocks and microhabitats. Marine Micropaleontology, 69 . pp. 314-333. DOI 10.1016/j.marmicro.2008.09.002 <https://doi.org/10.1016/j.marmicro.2008.09.002>. doi:10.1016/j.marmicro.2008.09.002 info:eu-repo/semantics/restrictedAccess Article PeerReviewed 2008 ftoceanrep https://doi.org/10.1016/j.marmicro.2008.09.002 2023-04-07T14:47:45Z Live (Rose Bengal stained) benthic foraminifera were investigated in surface sediment samples from the Okhotsk Sea to reveal the relationship between faunal characteristics and environmental parameters. Live benthic foraminifera were quantified in the size fraction > 125 µm in the upper 8 cm of replicate sediment cores, recovered with a multicorer at five stations along the Sakhalin margin, and at three stations on the southwestern Kamchatka slope. The stations are from water depths between 625 to 1752 m, located close or within the present Okhotsk Sea oxygen minimum zone, with oxygen levels between 0.3 and 1.5 ml l- 1. At the high-productivity and ice-free Kamchatka stations, live benthic foraminifera are characterized by maximal standing stocks (about 1700-3700 individuals per 50 cm2), strong dominance of calcareous species (up to 87-91% of total live faunas), and maximal habitat depths (down to 5.2-6.7 cm depth). Vertical distributions of total faunal abundances exhibit a clear subsurface maximum in sediments. At the Sakhalin stations, which are seasonally ice-covered and less productive, live benthic foraminifera show lower standing stocks (about 200-1100 individuals per 50 cm2), lower abundance of calcareous species (10-64% of total live faunas), and shallower habitat depths (down to 2.5-5.4 cm depth). Faunal vertical distributions are characterized by maximum in the uppermost surface sediments. It is suggested that 1) lower and strongly seasonal organic matter flux, caused by the seasonal sea ice cover and seasonal upwelling, 2) lower bottom water oxygenation (0.3-1.1 ml l- 1), and 3) more pronounced influence of carbonate undersaturated bottom water along the Sakhalin margin are the main factors responsible for the observed faunal differences. According to species downcore distributions and average living depths, common calcareous species were identified as preferentially shallow, intermediate and deep infaunal. Foraminiferal microhabitat occupation correlates with the organic matter flux and the depth ... Article in Journal/Newspaper Kamchatka okhotsk sea Sakhalin Sea ice OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Okhotsk Marine Micropaleontology 69 3-4 314 333 |
institution |
Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
op_collection_id |
ftoceanrep |
language |
English |
description |
Live (Rose Bengal stained) benthic foraminifera were investigated in surface sediment samples from the Okhotsk Sea to reveal the relationship between faunal characteristics and environmental parameters. Live benthic foraminifera were quantified in the size fraction > 125 µm in the upper 8 cm of replicate sediment cores, recovered with a multicorer at five stations along the Sakhalin margin, and at three stations on the southwestern Kamchatka slope. The stations are from water depths between 625 to 1752 m, located close or within the present Okhotsk Sea oxygen minimum zone, with oxygen levels between 0.3 and 1.5 ml l- 1. At the high-productivity and ice-free Kamchatka stations, live benthic foraminifera are characterized by maximal standing stocks (about 1700-3700 individuals per 50 cm2), strong dominance of calcareous species (up to 87-91% of total live faunas), and maximal habitat depths (down to 5.2-6.7 cm depth). Vertical distributions of total faunal abundances exhibit a clear subsurface maximum in sediments. At the Sakhalin stations, which are seasonally ice-covered and less productive, live benthic foraminifera show lower standing stocks (about 200-1100 individuals per 50 cm2), lower abundance of calcareous species (10-64% of total live faunas), and shallower habitat depths (down to 2.5-5.4 cm depth). Faunal vertical distributions are characterized by maximum in the uppermost surface sediments. It is suggested that 1) lower and strongly seasonal organic matter flux, caused by the seasonal sea ice cover and seasonal upwelling, 2) lower bottom water oxygenation (0.3-1.1 ml l- 1), and 3) more pronounced influence of carbonate undersaturated bottom water along the Sakhalin margin are the main factors responsible for the observed faunal differences. According to species downcore distributions and average living depths, common calcareous species were identified as preferentially shallow, intermediate and deep infaunal. Foraminiferal microhabitat occupation correlates with the organic matter flux and the depth ... |
format |
Article in Journal/Newspaper |
author |
Bubenshchikova, Natalia Nürnberg, Dirk Lembke-Jene, Lester Pavlova, Galina |
spellingShingle |
Bubenshchikova, Natalia Nürnberg, Dirk Lembke-Jene, Lester Pavlova, Galina Living benthic foraminifera of the Okhotsk Sea: faunal composition, standing stocks and microhabitats |
author_facet |
Bubenshchikova, Natalia Nürnberg, Dirk Lembke-Jene, Lester Pavlova, Galina |
author_sort |
Bubenshchikova, Natalia |
title |
Living benthic foraminifera of the Okhotsk Sea: faunal composition, standing stocks and microhabitats |
title_short |
Living benthic foraminifera of the Okhotsk Sea: faunal composition, standing stocks and microhabitats |
title_full |
Living benthic foraminifera of the Okhotsk Sea: faunal composition, standing stocks and microhabitats |
title_fullStr |
Living benthic foraminifera of the Okhotsk Sea: faunal composition, standing stocks and microhabitats |
title_full_unstemmed |
Living benthic foraminifera of the Okhotsk Sea: faunal composition, standing stocks and microhabitats |
title_sort |
living benthic foraminifera of the okhotsk sea: faunal composition, standing stocks and microhabitats |
publisher |
Elsevier |
publishDate |
2008 |
url |
https://oceanrep.geomar.de/id/eprint/3430/ https://oceanrep.geomar.de/id/eprint/3430/1/399_Bubenshchikova_2008_LivingBenthicForaminiferaOfThe_Artzeit_pubid10754.pdf https://doi.org/10.1016/j.marmicro.2008.09.002 |
geographic |
Okhotsk |
geographic_facet |
Okhotsk |
genre |
Kamchatka okhotsk sea Sakhalin Sea ice |
genre_facet |
Kamchatka okhotsk sea Sakhalin Sea ice |
op_relation |
https://oceanrep.geomar.de/id/eprint/3430/1/399_Bubenshchikova_2008_LivingBenthicForaminiferaOfThe_Artzeit_pubid10754.pdf Bubenshchikova, N., Nürnberg, D. , Lembke-Jene, L. and Pavlova, G. (2008) Living benthic foraminifera of the Okhotsk Sea: faunal composition, standing stocks and microhabitats. Marine Micropaleontology, 69 . pp. 314-333. DOI 10.1016/j.marmicro.2008.09.002 <https://doi.org/10.1016/j.marmicro.2008.09.002>. doi:10.1016/j.marmicro.2008.09.002 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1016/j.marmicro.2008.09.002 |
container_title |
Marine Micropaleontology |
container_volume |
69 |
container_issue |
3-4 |
container_start_page |
314 |
op_container_end_page |
333 |
_version_ |
1766051298768060416 |