North East Atlantic benthic foraminifera: Modern distribution patterns and palaeoecological significance
Microfaunal evidence is presented from a region in the NE Atlantic Ocean characterized by well-constrained and very uniform physiochemical water mass properties, but a significant gradient in surface ocean productivity. Notable changes in the species composition of benthic foraminiferal assemblages...
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ftunstandrewcris:oai:risweb.st-andrews.ac.uk:publications/6b182ed9-8b47-441f-b4ab-87fe9bae8334 2023-05-15T17:38:27+02:00 North East Atlantic benthic foraminifera: Modern distribution patterns and palaeoecological significance Austin, William Edward Newns Evans, JR 2000-05 https://risweb.st-andrews.ac.uk/portal/en/researchoutput/north-east-atlantic-benthic-foraminifera-modern-distribution-patterns-and-palaeoecological-significance(6b182ed9-8b47-441f-b4ab-87fe9bae8334).html http://www.scopus.com/inward/record.url?scp=0034028501&partnerID=8YFLogxK eng eng info:eu-repo/semantics/restrictedAccess Austin , W E N & Evans , JR 2000 , ' North East Atlantic benthic foraminifera: Modern distribution patterns and palaeoecological significance ' , Journal of the Geological Society , vol. 157 , pp. 679-691 . foraminifera deep-sea sedimentation palaeoceanography organic carbon SEASONALLY DEPOSITED PHYTODETRITUS BATHYAL NORTHEAST ATLANTIC DEEP-SEA FORAMINIFERA OCEAN PRODUCTIVITY PALEOCEANOGRAPHY MICROHABITATS CIRCULATION POPULATIONS FLUXES article 2000 ftunstandrewcris 2021-12-26T14:11:17Z Microfaunal evidence is presented from a region in the NE Atlantic Ocean characterized by well-constrained and very uniform physiochemical water mass properties, but a significant gradient in surface ocean productivity. Notable changes in the species composition of benthic foraminiferal assemblages can be directly related to surface productivity and particulate organic matter supply to the deep ocean Boor. Because of the labile nature of much organic matter as it reaches the sea Boor, it is argued that benthic foraminifera, which exhibit a high preservation potential in most marine sediments, provide a better proxy for estimating past fluxes than bulk sediment organic carbon (OC) content. Three distinct assemblage groups are recognized: a Cassidulina laevigata group which is dominated by infaunal species and a relatively high sediment OC content; a Rhizammina spp. group which is also dominated by infaunal species; and an Epistominella exigua group dominated by epifaunal taxa and falling sediment OC content. Significant faunal assemblage changes appear to be independent of grain size. Article in Journal/Newspaper North East Atlantic Northeast Atlantic University of St Andrews: Research Portal |
institution |
Open Polar |
collection |
University of St Andrews: Research Portal |
op_collection_id |
ftunstandrewcris |
language |
English |
topic |
foraminifera deep-sea sedimentation palaeoceanography organic carbon SEASONALLY DEPOSITED PHYTODETRITUS BATHYAL NORTHEAST ATLANTIC DEEP-SEA FORAMINIFERA OCEAN PRODUCTIVITY PALEOCEANOGRAPHY MICROHABITATS CIRCULATION POPULATIONS FLUXES |
spellingShingle |
foraminifera deep-sea sedimentation palaeoceanography organic carbon SEASONALLY DEPOSITED PHYTODETRITUS BATHYAL NORTHEAST ATLANTIC DEEP-SEA FORAMINIFERA OCEAN PRODUCTIVITY PALEOCEANOGRAPHY MICROHABITATS CIRCULATION POPULATIONS FLUXES Austin, William Edward Newns Evans, JR North East Atlantic benthic foraminifera: Modern distribution patterns and palaeoecological significance |
topic_facet |
foraminifera deep-sea sedimentation palaeoceanography organic carbon SEASONALLY DEPOSITED PHYTODETRITUS BATHYAL NORTHEAST ATLANTIC DEEP-SEA FORAMINIFERA OCEAN PRODUCTIVITY PALEOCEANOGRAPHY MICROHABITATS CIRCULATION POPULATIONS FLUXES |
description |
Microfaunal evidence is presented from a region in the NE Atlantic Ocean characterized by well-constrained and very uniform physiochemical water mass properties, but a significant gradient in surface ocean productivity. Notable changes in the species composition of benthic foraminiferal assemblages can be directly related to surface productivity and particulate organic matter supply to the deep ocean Boor. Because of the labile nature of much organic matter as it reaches the sea Boor, it is argued that benthic foraminifera, which exhibit a high preservation potential in most marine sediments, provide a better proxy for estimating past fluxes than bulk sediment organic carbon (OC) content. Three distinct assemblage groups are recognized: a Cassidulina laevigata group which is dominated by infaunal species and a relatively high sediment OC content; a Rhizammina spp. group which is also dominated by infaunal species; and an Epistominella exigua group dominated by epifaunal taxa and falling sediment OC content. Significant faunal assemblage changes appear to be independent of grain size. |
format |
Article in Journal/Newspaper |
author |
Austin, William Edward Newns Evans, JR |
author_facet |
Austin, William Edward Newns Evans, JR |
author_sort |
Austin, William Edward Newns |
title |
North East Atlantic benthic foraminifera: Modern distribution patterns and palaeoecological significance |
title_short |
North East Atlantic benthic foraminifera: Modern distribution patterns and palaeoecological significance |
title_full |
North East Atlantic benthic foraminifera: Modern distribution patterns and palaeoecological significance |
title_fullStr |
North East Atlantic benthic foraminifera: Modern distribution patterns and palaeoecological significance |
title_full_unstemmed |
North East Atlantic benthic foraminifera: Modern distribution patterns and palaeoecological significance |
title_sort |
north east atlantic benthic foraminifera: modern distribution patterns and palaeoecological significance |
publishDate |
2000 |
url |
https://risweb.st-andrews.ac.uk/portal/en/researchoutput/north-east-atlantic-benthic-foraminifera-modern-distribution-patterns-and-palaeoecological-significance(6b182ed9-8b47-441f-b4ab-87fe9bae8334).html http://www.scopus.com/inward/record.url?scp=0034028501&partnerID=8YFLogxK |
genre |
North East Atlantic Northeast Atlantic |
genre_facet |
North East Atlantic Northeast Atlantic |
op_source |
Austin , W E N & Evans , JR 2000 , ' North East Atlantic benthic foraminifera: Modern distribution patterns and palaeoecological significance ' , Journal of the Geological Society , vol. 157 , pp. 679-691 . |
op_rights |
info:eu-repo/semantics/restrictedAccess |
_version_ |
1766138892210143232 |