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Soft-shelled, monothalamous foraminifera from the oxic/anoxic interface (NW Black Sea)

Soft-shelled, monothalamous foraminifera from the oxic/anoxic interface (NW Black Sea)
Soft-shelled, monothalamous foraminifera from the oxic/anoxic interface (NW Black Sea)
We describe single-chambered (monothalamous), soft-shelled, benthic foraminifera from the lower oxygen-border zone to the upper hydrogen-sulfide-border zone (120 – 240m water depth) in theNWBlack Sea. The transect is situated inside the field of active methane seeps associated with the submarine Dnieper Canyon, although none of the samples are from the seeps themselves. Within this depth range, monothalamous foraminifera were more numerous than hard-shelled, multichambered taxa. Both groups reached their
highest abundance between 150 and 170m,with a sharp peak at 160m.Atotal of 40 informal groupings (morphospecies or morphotypes), and one described species, of monothalamous foraminifera, either organic-walled ‘allogromiids’ or agglutinated ‘saccamminids’, was recognised. In all studied samples, they were found within the surficial detritus layer as well as the underlying 0-1cm sediment layer.
0026-2803
393-407
Sergeeva, Nelli G.
b8309e63-f99f-457d-8a26-8514266fd1ab
Anikeeva, Oksana V.
6ecf2635-59b1-4d04-86fc-1cd29769754d
Gooday, Andrew J.
d9331d67-d518-4cfb-baed-9df3333b05b9
Sergeeva, Nelli G.
b8309e63-f99f-457d-8a26-8514266fd1ab
Anikeeva, Oksana V.
6ecf2635-59b1-4d04-86fc-1cd29769754d
Gooday, Andrew J.
d9331d67-d518-4cfb-baed-9df3333b05b9

Sergeeva, Nelli G., Anikeeva, Oksana V. and Gooday, Andrew J. (2010) Soft-shelled, monothalamous foraminifera from the oxic/anoxic interface (NW Black Sea). Micropaleontology, 56 (3-4), 393-407.

Record type: Article

Abstract

We describe single-chambered (monothalamous), soft-shelled, benthic foraminifera from the lower oxygen-border zone to the upper hydrogen-sulfide-border zone (120 – 240m water depth) in theNWBlack Sea. The transect is situated inside the field of active methane seeps associated with the submarine Dnieper Canyon, although none of the samples are from the seeps themselves. Within this depth range, monothalamous foraminifera were more numerous than hard-shelled, multichambered taxa. Both groups reached their
highest abundance between 150 and 170m,with a sharp peak at 160m.Atotal of 40 informal groupings (morphospecies or morphotypes), and one described species, of monothalamous foraminifera, either organic-walled ‘allogromiids’ or agglutinated ‘saccamminids’, was recognised. In all studied samples, they were found within the surficial detritus layer as well as the underlying 0-1cm sediment layer.

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Published date: 2010
Organisations: Marine Biogeochemistry

Identifiers

Local EPrints ID: 169441
URI: http://eprints.soton.ac.uk/id/eprint/169441
ISSN: 0026-2803
PURE UUID: b2d69ae7-80dc-4260-a29f-634c0200b5c2

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Date deposited: 15 Dec 2010 10:06
Last modified: 14 Mar 2024 02:21

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Contributors

Author: Nelli G. Sergeeva
Author: Oksana V. Anikeeva
Author: Andrew J. Gooday

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