Warm-water events in the eastern Fram Strait during the last 2000 years as revealed by different microfossil groups
The environmental system of the northern Nordic Seas is very sensitive to oceanographic and climatic changes at the contact of cold Arctic and warmer North Atlantic waters. These contrasts are reflected in the associations of marine microorganisms and archived in the bottom sediments. A microfossil...
Main Authors: | , , , , , |
---|---|
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Norwegian Polar Institute
2018
|
Subjects: | |
Online Access: | https://polarresearch.net/index.php/polar/article/view/3402 |
id |
ftjpolarres:oai:journals.openacademia.net:article/3402 |
---|---|
record_format |
openpolar |
spelling |
ftjpolarres:oai:journals.openacademia.net:article/3402 2023-05-15T14:54:51+02:00 Warm-water events in the eastern Fram Strait during the last 2000 years as revealed by different microfossil groups Matul, Alexander Spielhagen, Robert F. Kazarina, Galina Kruglikova, Svetlana Dmitrenko, Olga Mohan, Rahul 2018-11-26 application/pdf application/xml https://polarresearch.net/index.php/polar/article/view/3402 eng eng Norwegian Polar Institute https://polarresearch.net/index.php/polar/article/view/3402/9060 https://polarresearch.net/index.php/polar/article/view/3402/9061 https://polarresearch.net/index.php/polar/article/view/3402 Polar Research; Vol 37 (2018) 1751-8369 Arctic warming late Holocene micropalaeontology sea surface/subsurface palaeoenvironments info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2018 ftjpolarres 2021-11-11T19:14:21Z The environmental system of the northern Nordic Seas is very sensitive to oceanographic and climatic changes at the contact of cold Arctic and warmer North Atlantic waters. These contrasts are reflected in the associations of marine microorganisms and archived in the bottom sediments. A microfossil study (diatoms, coccoliths) of late Holocene sediments in core MSM5/5-712-1 from the eastern Fram Strait provides a better understanding of marine ecosystems and palaeoenvironments during Arctic warming events of the last two millennia. Indicative diatom species and groups of species revealed a high variability of sea-surface conditions. Based on the diatom distribution, three warming periods could be detected, corresponding to the time intervals of 0 to 440 CE (the later part of the Roman Warm Period), 1200 to1420 CE (the final part of the Medieval Climate Anomaly) and 1730 CE to present (including the Recent Warming). The various micropalaeontological proxies used in this study and other publications describe the Roman Warm Period and, especially, the Recent Warming as the most pronounced warm events in the area during the last 2000 years. A comparison of data from the different microfossil groups, indicators of seasurface and subsurface conditions, reveals variable, complicated and non-simultaneous palaeoenvironmental signals within the warm periods. This can potentially be explained by changes in the surface/subsurface water structure during the events (variations in the cold/ warm water advection, stratification, availability of nutrients, seasonal succession of bioproductivity, etc.), which are reflected by changes in the microplankton communities. Article in Journal/Newspaper Arctic Fram Strait Nordic Seas North Atlantic Polar Research Polar Research (E-Journal) Arctic |
institution |
Open Polar |
collection |
Polar Research (E-Journal) |
op_collection_id |
ftjpolarres |
language |
English |
topic |
Arctic warming late Holocene micropalaeontology sea surface/subsurface palaeoenvironments |
spellingShingle |
Arctic warming late Holocene micropalaeontology sea surface/subsurface palaeoenvironments Matul, Alexander Spielhagen, Robert F. Kazarina, Galina Kruglikova, Svetlana Dmitrenko, Olga Mohan, Rahul Warm-water events in the eastern Fram Strait during the last 2000 years as revealed by different microfossil groups |
topic_facet |
Arctic warming late Holocene micropalaeontology sea surface/subsurface palaeoenvironments |
description |
The environmental system of the northern Nordic Seas is very sensitive to oceanographic and climatic changes at the contact of cold Arctic and warmer North Atlantic waters. These contrasts are reflected in the associations of marine microorganisms and archived in the bottom sediments. A microfossil study (diatoms, coccoliths) of late Holocene sediments in core MSM5/5-712-1 from the eastern Fram Strait provides a better understanding of marine ecosystems and palaeoenvironments during Arctic warming events of the last two millennia. Indicative diatom species and groups of species revealed a high variability of sea-surface conditions. Based on the diatom distribution, three warming periods could be detected, corresponding to the time intervals of 0 to 440 CE (the later part of the Roman Warm Period), 1200 to1420 CE (the final part of the Medieval Climate Anomaly) and 1730 CE to present (including the Recent Warming). The various micropalaeontological proxies used in this study and other publications describe the Roman Warm Period and, especially, the Recent Warming as the most pronounced warm events in the area during the last 2000 years. A comparison of data from the different microfossil groups, indicators of seasurface and subsurface conditions, reveals variable, complicated and non-simultaneous palaeoenvironmental signals within the warm periods. This can potentially be explained by changes in the surface/subsurface water structure during the events (variations in the cold/ warm water advection, stratification, availability of nutrients, seasonal succession of bioproductivity, etc.), which are reflected by changes in the microplankton communities. |
format |
Article in Journal/Newspaper |
author |
Matul, Alexander Spielhagen, Robert F. Kazarina, Galina Kruglikova, Svetlana Dmitrenko, Olga Mohan, Rahul |
author_facet |
Matul, Alexander Spielhagen, Robert F. Kazarina, Galina Kruglikova, Svetlana Dmitrenko, Olga Mohan, Rahul |
author_sort |
Matul, Alexander |
title |
Warm-water events in the eastern Fram Strait during the last 2000 years as revealed by different microfossil groups |
title_short |
Warm-water events in the eastern Fram Strait during the last 2000 years as revealed by different microfossil groups |
title_full |
Warm-water events in the eastern Fram Strait during the last 2000 years as revealed by different microfossil groups |
title_fullStr |
Warm-water events in the eastern Fram Strait during the last 2000 years as revealed by different microfossil groups |
title_full_unstemmed |
Warm-water events in the eastern Fram Strait during the last 2000 years as revealed by different microfossil groups |
title_sort |
warm-water events in the eastern fram strait during the last 2000 years as revealed by different microfossil groups |
publisher |
Norwegian Polar Institute |
publishDate |
2018 |
url |
https://polarresearch.net/index.php/polar/article/view/3402 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Fram Strait Nordic Seas North Atlantic Polar Research |
genre_facet |
Arctic Fram Strait Nordic Seas North Atlantic Polar Research |
op_source |
Polar Research; Vol 37 (2018) 1751-8369 |
op_relation |
https://polarresearch.net/index.php/polar/article/view/3402/9060 https://polarresearch.net/index.php/polar/article/view/3402/9061 https://polarresearch.net/index.php/polar/article/view/3402 |
_version_ |
1766326598983745536 |