(Table DR1) Abundance of benthonic foraminifera in sediments from ODP Hole 113-690 ...
A mass extinction of deep-sea benthic foraminifera has been documented globally, coeval with the negative carbon isotope excursion (CIE) at the Paleocene-Eocene boundary, which was probably caused by dissociation of methane hydrate. A detailed record of benthic foraminiferal faunal change over ~30 k...
Main Author: | |
---|---|
Format: | Dataset |
Language: | English |
Published: |
PANGAEA - Publishing Network for Geoscientific and Environmental Data
2003
|
Subjects: | |
Online Access: | https://dx.doi.org/10.15468/spf4s9 https://www.gbif.org/dataset/792f74fa-f762-11e1-a439-00145eb45e9a |
id |
ftdatacite:10.15468/spf4s9 |
---|---|
record_format |
openpolar |
spelling |
ftdatacite:10.15468/spf4s9 2023-12-31T10:09:14+01:00 (Table DR1) Abundance of benthonic foraminifera in sediments from ODP Hole 113-690 ... Thomas, Ellen 2003 https://dx.doi.org/10.15468/spf4s9 https://www.gbif.org/dataset/792f74fa-f762-11e1-a439-00145eb45e9a en eng PANGAEA - Publishing Network for Geoscientific and Environmental Data https://dx.doi.org/10.1594/pangaea.724678 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 Dataset OCCURRENCE dataset 2003 ftdatacite https://doi.org/10.15468/spf4s910.1594/pangaea.724678 2023-12-01T10:30:13Z A mass extinction of deep-sea benthic foraminifera has been documented globally, coeval with the negative carbon isotope excursion (CIE) at the Paleocene-Eocene boundary, which was probably caused by dissociation of methane hydrate. A detailed record of benthic foraminiferal faunal change over ~30 k.y. across the carbon isotopic excursion at the Ocean Drilling Program Site 690 (Southern Ocean) shows that shortly before the CIE absolute benthic foraminiferal abundance at that site started to increase. 'Doomed species' began to decrease in abundance at the CIE by a few thousand years. After the extinction faunas were dominated by small species, which resemble opportunistic taxa under high-productivity regions in the present oceans. Calcareous nannofossils (primary producers), however, show a transition to more oligotrophic nannofloras exactly where the benthic faunas show the opposite. Plankton and benthos is thus decoupled. Possibly, a larger fraction of food particles reached the seafloor after the CIE, so ... Dataset Methane hydrate Southern Ocean DataCite Metadata Store (German National Library of Science and Technology) |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
description |
A mass extinction of deep-sea benthic foraminifera has been documented globally, coeval with the negative carbon isotope excursion (CIE) at the Paleocene-Eocene boundary, which was probably caused by dissociation of methane hydrate. A detailed record of benthic foraminiferal faunal change over ~30 k.y. across the carbon isotopic excursion at the Ocean Drilling Program Site 690 (Southern Ocean) shows that shortly before the CIE absolute benthic foraminiferal abundance at that site started to increase. 'Doomed species' began to decrease in abundance at the CIE by a few thousand years. After the extinction faunas were dominated by small species, which resemble opportunistic taxa under high-productivity regions in the present oceans. Calcareous nannofossils (primary producers), however, show a transition to more oligotrophic nannofloras exactly where the benthic faunas show the opposite. Plankton and benthos is thus decoupled. Possibly, a larger fraction of food particles reached the seafloor after the CIE, so ... |
format |
Dataset |
author |
Thomas, Ellen |
spellingShingle |
Thomas, Ellen (Table DR1) Abundance of benthonic foraminifera in sediments from ODP Hole 113-690 ... |
author_facet |
Thomas, Ellen |
author_sort |
Thomas, Ellen |
title |
(Table DR1) Abundance of benthonic foraminifera in sediments from ODP Hole 113-690 ... |
title_short |
(Table DR1) Abundance of benthonic foraminifera in sediments from ODP Hole 113-690 ... |
title_full |
(Table DR1) Abundance of benthonic foraminifera in sediments from ODP Hole 113-690 ... |
title_fullStr |
(Table DR1) Abundance of benthonic foraminifera in sediments from ODP Hole 113-690 ... |
title_full_unstemmed |
(Table DR1) Abundance of benthonic foraminifera in sediments from ODP Hole 113-690 ... |
title_sort |
(table dr1) abundance of benthonic foraminifera in sediments from odp hole 113-690 ... |
publisher |
PANGAEA - Publishing Network for Geoscientific and Environmental Data |
publishDate |
2003 |
url |
https://dx.doi.org/10.15468/spf4s9 https://www.gbif.org/dataset/792f74fa-f762-11e1-a439-00145eb45e9a |
genre |
Methane hydrate Southern Ocean |
genre_facet |
Methane hydrate Southern Ocean |
op_relation |
https://dx.doi.org/10.1594/pangaea.724678 |
op_rights |
Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 |
op_doi |
https://doi.org/10.15468/spf4s910.1594/pangaea.724678 |
_version_ |
1786842261486567424 |