Benthic foraminifera and phytodetritus species in sediments from DSDP Leg 85, and ODP Legs 113 and 143
From late middle Eocene through earliest Oligocene, high-latitude regions cooled, and by the end of the period, continental ice sheets existed in Antarctica. Diversity of planktonic microorganisms declined, and modern groups of terrestrial vertebrates originated. Coeval faunal changes in deep-sea be...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.712704 2023-05-15T13:42:09+02:00 Benthic foraminifera and phytodetritus species in sediments from DSDP Leg 85, and ODP Legs 113 and 143 Thomas, Ellen Gooday, Andrew J MEDIAN LATITUDE: -21.306033 * MEDIAN LONGITUDE: -88.377937 * SOUTH-BOUND LATITUDE: -65.160667 * WEST-BOUND LONGITUDE: -179.555000 * NORTH-BOUND LATITUDE: 18.440300 * EAST-BOUND LONGITUDE: 3.100150 * DATE/TIME START: 1982-04-02T00:00:00 * DATE/TIME END: 1992-04-04T00:00:00 1996-02-16 application/zip, 5 datasets https://doi.pangaea.de/10.1594/PANGAEA.712704 https://doi.org/10.1594/PANGAEA.712704 en eng PANGAEA Deep-sea benthic foraminifera: Tracers for changes in oceanic productivity? (URI: ftp://rock.geosociety.org/pub/reposit/1996/9619.pdf) https://doi.pangaea.de/10.1594/PANGAEA.712704 https://doi.org/10.1594/PANGAEA.712704 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Thomas, Ellen; Gooday, Andrew J (1996): Cenozoic deep-sea benthic foraminifers: Tracers for changes in oceanic productivity? Geology, 24(4), 355-358, https://doi.org/10.1130/0091-7613(1996)024%3C0355:CDSBFT%3E2.3.CO;2 113-689 113-690 143-865 85-573 85-574 85-575 COMPCORE Composite Core Deep Sea Drilling Project DRILL Drilling/drill rig DSDP Glomar Challenger Joides Resolution Leg113 Leg143 Leg85 North Pacific/FLANK North Pacific/TROUGH North Pacific Ocean Ocean Drilling Program ODP South Atlantic Ocean Dataset 1996 ftpangaea https://doi.org/10.1594/PANGAEA.712704 https://doi.org/10.1130/0091-7613(1996)024%3C0355:CDSBFT%3E2.3.CO;2 2023-01-20T07:31:22Z From late middle Eocene through earliest Oligocene, high-latitude regions cooled, and by the end of the period, continental ice sheets existed in Antarctica. Diversity of planktonic microorganisms declined, and modern groups of terrestrial vertebrates originated. Coeval faunal changes in deep-sea benthic foraminifers have been related to cooling of deep waters and increased oxygenation. Cooling, however, occurred globally, whereas species richness declined at high latitudes and not in the tropics. The late Eocene and younger lower-diversity, high-latitude faunas typically contain common Epistominella exigua and Alabaminella weddellensis, opportunistic phytodetritus-exploiting species that indicate a seasonally fluctuating input of organic matter to the sea floor. We speculate that the species-richness gradient and increase in abundance of phytodetritus-exploiting species resulted largely from the onset of a more unpredictable and seasonally fluctuating food supply, especially at high latitudes. Dataset Antarc* Antarctica South Atlantic Ocean PANGAEA - Data Publisher for Earth & Environmental Science Pacific ENVELOPE(-179.555000,3.100150,18.440300,-65.160667) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
113-689 113-690 143-865 85-573 85-574 85-575 COMPCORE Composite Core Deep Sea Drilling Project DRILL Drilling/drill rig DSDP Glomar Challenger Joides Resolution Leg113 Leg143 Leg85 North Pacific/FLANK North Pacific/TROUGH North Pacific Ocean Ocean Drilling Program ODP South Atlantic Ocean |
spellingShingle |
113-689 113-690 143-865 85-573 85-574 85-575 COMPCORE Composite Core Deep Sea Drilling Project DRILL Drilling/drill rig DSDP Glomar Challenger Joides Resolution Leg113 Leg143 Leg85 North Pacific/FLANK North Pacific/TROUGH North Pacific Ocean Ocean Drilling Program ODP South Atlantic Ocean Thomas, Ellen Gooday, Andrew J Benthic foraminifera and phytodetritus species in sediments from DSDP Leg 85, and ODP Legs 113 and 143 |
topic_facet |
113-689 113-690 143-865 85-573 85-574 85-575 COMPCORE Composite Core Deep Sea Drilling Project DRILL Drilling/drill rig DSDP Glomar Challenger Joides Resolution Leg113 Leg143 Leg85 North Pacific/FLANK North Pacific/TROUGH North Pacific Ocean Ocean Drilling Program ODP South Atlantic Ocean |
description |
From late middle Eocene through earliest Oligocene, high-latitude regions cooled, and by the end of the period, continental ice sheets existed in Antarctica. Diversity of planktonic microorganisms declined, and modern groups of terrestrial vertebrates originated. Coeval faunal changes in deep-sea benthic foraminifers have been related to cooling of deep waters and increased oxygenation. Cooling, however, occurred globally, whereas species richness declined at high latitudes and not in the tropics. The late Eocene and younger lower-diversity, high-latitude faunas typically contain common Epistominella exigua and Alabaminella weddellensis, opportunistic phytodetritus-exploiting species that indicate a seasonally fluctuating input of organic matter to the sea floor. We speculate that the species-richness gradient and increase in abundance of phytodetritus-exploiting species resulted largely from the onset of a more unpredictable and seasonally fluctuating food supply, especially at high latitudes. |
format |
Dataset |
author |
Thomas, Ellen Gooday, Andrew J |
author_facet |
Thomas, Ellen Gooday, Andrew J |
author_sort |
Thomas, Ellen |
title |
Benthic foraminifera and phytodetritus species in sediments from DSDP Leg 85, and ODP Legs 113 and 143 |
title_short |
Benthic foraminifera and phytodetritus species in sediments from DSDP Leg 85, and ODP Legs 113 and 143 |
title_full |
Benthic foraminifera and phytodetritus species in sediments from DSDP Leg 85, and ODP Legs 113 and 143 |
title_fullStr |
Benthic foraminifera and phytodetritus species in sediments from DSDP Leg 85, and ODP Legs 113 and 143 |
title_full_unstemmed |
Benthic foraminifera and phytodetritus species in sediments from DSDP Leg 85, and ODP Legs 113 and 143 |
title_sort |
benthic foraminifera and phytodetritus species in sediments from dsdp leg 85, and odp legs 113 and 143 |
publisher |
PANGAEA |
publishDate |
1996 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.712704 https://doi.org/10.1594/PANGAEA.712704 |
op_coverage |
MEDIAN LATITUDE: -21.306033 * MEDIAN LONGITUDE: -88.377937 * SOUTH-BOUND LATITUDE: -65.160667 * WEST-BOUND LONGITUDE: -179.555000 * NORTH-BOUND LATITUDE: 18.440300 * EAST-BOUND LONGITUDE: 3.100150 * DATE/TIME START: 1982-04-02T00:00:00 * DATE/TIME END: 1992-04-04T00:00:00 |
long_lat |
ENVELOPE(-179.555000,3.100150,18.440300,-65.160667) |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
Antarc* Antarctica South Atlantic Ocean |
genre_facet |
Antarc* Antarctica South Atlantic Ocean |
op_source |
Supplement to: Thomas, Ellen; Gooday, Andrew J (1996): Cenozoic deep-sea benthic foraminifers: Tracers for changes in oceanic productivity? Geology, 24(4), 355-358, https://doi.org/10.1130/0091-7613(1996)024%3C0355:CDSBFT%3E2.3.CO;2 |
op_relation |
Deep-sea benthic foraminifera: Tracers for changes in oceanic productivity? (URI: ftp://rock.geosociety.org/pub/reposit/1996/9619.pdf) https://doi.pangaea.de/10.1594/PANGAEA.712704 https://doi.org/10.1594/PANGAEA.712704 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.712704 https://doi.org/10.1130/0091-7613(1996)024%3C0355:CDSBFT%3E2.3.CO;2 |
_version_ |
1766163457927806976 |