Dinoflagellate cysts as proxies of environmental, ocean and climate changes in the Atlantic realm during the quaternary
Over the last four decades, organic-walled dinoflagellate cysts have shown high potential as tracers of past sea-surface conditions during the Quaternary. These microfossils relate to the pelagic productivity of both phototrophic and heterotrophic protist organisms and are recovered in high numbers...
Published in: | Frontiers in Ecology and Evolution |
---|---|
Main Authors: | , |
Format: | Article in Journal/Newspaper |
Language: | unknown |
Published: |
Frontiers Media SA
2024
|
Subjects: | |
Online Access: | http://dx.doi.org/10.3389/fevo.2024.1378931 https://www.frontiersin.org/articles/10.3389/fevo.2024.1378931/full |
id |
crfrontiers:10.3389/fevo.2024.1378931 |
---|---|
record_format |
openpolar |
spelling |
crfrontiers:10.3389/fevo.2024.1378931 2024-09-15T17:46:26+00:00 Dinoflagellate cysts as proxies of environmental, ocean and climate changes in the Atlantic realm during the quaternary Marret, Fabienne de Vernal, Anne 2024 http://dx.doi.org/10.3389/fevo.2024.1378931 https://www.frontiersin.org/articles/10.3389/fevo.2024.1378931/full unknown Frontiers Media SA https://creativecommons.org/licenses/by/4.0/ Frontiers in Ecology and Evolution volume 12 ISSN 2296-701X journal-article 2024 crfrontiers https://doi.org/10.3389/fevo.2024.1378931 2024-07-23T04:04:34Z Over the last four decades, organic-walled dinoflagellate cysts have shown high potential as tracers of past sea-surface conditions during the Quaternary. These microfossils relate to the pelagic productivity of both phototrophic and heterotrophic protist organisms and are recovered in high numbers in almost all marine environment settings from the nearshore and estuarine systems to the distal continental margin. In polar environments, where other conventional proxies are rare or absent, dinoflagellate cysts showed a relatively high diversity of species and a close relationship with sea-ice cover duration, winter and summer temperature, and salinity, enabling quantitative reconstructions of several oceanic variables over time. From the temperate to the tropical latitudes of the Atlantic Ocean, their modern distribution highlights a response to primary productivity and seasonal contrasts in surface temperature. They also have proven that they could be used as tracers of eutrophication in stratified systems and can also highlight human impact on their distribution. In this paper, we present an overview of dinoflagellate cysts as ecological tracers in recent and past sediments of the Atlantic Ocean, from the Arctic to the Antarctic. We provide examples of their use as proxies in paleoclimatic-palaeoceanographic studies at glacial to interglacial time scales, with emphasis on the last ice age to recent (last 25 kyr), the northern North Atlantic and western-eastern tropic North Atlantic. We also discuss their potential as tracers of anthropogenic stress in coastal environments. Article in Journal/Newspaper Antarc* Antarctic North Atlantic Sea ice Frontiers (Publisher) Frontiers in Ecology and Evolution 12 |
institution |
Open Polar |
collection |
Frontiers (Publisher) |
op_collection_id |
crfrontiers |
language |
unknown |
description |
Over the last four decades, organic-walled dinoflagellate cysts have shown high potential as tracers of past sea-surface conditions during the Quaternary. These microfossils relate to the pelagic productivity of both phototrophic and heterotrophic protist organisms and are recovered in high numbers in almost all marine environment settings from the nearshore and estuarine systems to the distal continental margin. In polar environments, where other conventional proxies are rare or absent, dinoflagellate cysts showed a relatively high diversity of species and a close relationship with sea-ice cover duration, winter and summer temperature, and salinity, enabling quantitative reconstructions of several oceanic variables over time. From the temperate to the tropical latitudes of the Atlantic Ocean, their modern distribution highlights a response to primary productivity and seasonal contrasts in surface temperature. They also have proven that they could be used as tracers of eutrophication in stratified systems and can also highlight human impact on their distribution. In this paper, we present an overview of dinoflagellate cysts as ecological tracers in recent and past sediments of the Atlantic Ocean, from the Arctic to the Antarctic. We provide examples of their use as proxies in paleoclimatic-palaeoceanographic studies at glacial to interglacial time scales, with emphasis on the last ice age to recent (last 25 kyr), the northern North Atlantic and western-eastern tropic North Atlantic. We also discuss their potential as tracers of anthropogenic stress in coastal environments. |
format |
Article in Journal/Newspaper |
author |
Marret, Fabienne de Vernal, Anne |
spellingShingle |
Marret, Fabienne de Vernal, Anne Dinoflagellate cysts as proxies of environmental, ocean and climate changes in the Atlantic realm during the quaternary |
author_facet |
Marret, Fabienne de Vernal, Anne |
author_sort |
Marret, Fabienne |
title |
Dinoflagellate cysts as proxies of environmental, ocean and climate changes in the Atlantic realm during the quaternary |
title_short |
Dinoflagellate cysts as proxies of environmental, ocean and climate changes in the Atlantic realm during the quaternary |
title_full |
Dinoflagellate cysts as proxies of environmental, ocean and climate changes in the Atlantic realm during the quaternary |
title_fullStr |
Dinoflagellate cysts as proxies of environmental, ocean and climate changes in the Atlantic realm during the quaternary |
title_full_unstemmed |
Dinoflagellate cysts as proxies of environmental, ocean and climate changes in the Atlantic realm during the quaternary |
title_sort |
dinoflagellate cysts as proxies of environmental, ocean and climate changes in the atlantic realm during the quaternary |
publisher |
Frontiers Media SA |
publishDate |
2024 |
url |
http://dx.doi.org/10.3389/fevo.2024.1378931 https://www.frontiersin.org/articles/10.3389/fevo.2024.1378931/full |
genre |
Antarc* Antarctic North Atlantic Sea ice |
genre_facet |
Antarc* Antarctic North Atlantic Sea ice |
op_source |
Frontiers in Ecology and Evolution volume 12 ISSN 2296-701X |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3389/fevo.2024.1378931 |
container_title |
Frontiers in Ecology and Evolution |
container_volume |
12 |
_version_ |
1810494575065694208 |