Planktonic Protists of the Eastern Nordic Seas and the Fram Strait: Spatial Changes Related to Hydrography During Early Summer
The European Arctic is rapidly changing where increasing water temperatures and rapid loss of sea ice will likely influence the structure and functioning of the entire ecosystem. This study aimed to describe the taxonomic composition and spatial distribution of early summer (2015–2016) nano- and mic...
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ftdoajarticles:oai:doaj.org/article:e9612938ac23458b911b696db9367bc6 2023-05-15T15:01:56+02:00 Planktonic Protists of the Eastern Nordic Seas and the Fram Strait: Spatial Changes Related to Hydrography During Early Summer Anna Maria Dąbrowska Józef Mikołaj Wiktor Małgorzata Merchel Józef Maria Wiktor 2020-07-01T00:00:00Z https://doi.org/10.3389/fmars.2020.00557 https://doaj.org/article/e9612938ac23458b911b696db9367bc6 EN eng Frontiers Media S.A. https://www.frontiersin.org/article/10.3389/fmars.2020.00557/full https://doaj.org/toc/2296-7745 2296-7745 doi:10.3389/fmars.2020.00557 https://doaj.org/article/e9612938ac23458b911b696db9367bc6 Frontiers in Marine Science, Vol 7 (2020) protists hydrography Atlantic water Nordic Seas Fram Strait Science Q General. Including nature conservation geographical distribution QH1-199.5 article 2020 ftdoajarticles https://doi.org/10.3389/fmars.2020.00557 2022-12-31T02:57:05Z The European Arctic is rapidly changing where increasing water temperatures and rapid loss of sea ice will likely influence the structure and functioning of the entire ecosystem. This study aimed to describe the taxonomic composition and spatial distribution of early summer (2015–2016) nano- and microplanktonic protists in the Nordic (Norwegian, Greenland) Seas and the Fram Strait (70.99°N to 78.84°N; 1.52°E to 19.90°E) and to determine the distribution patterns of the communities from the aspect of hydrography, as deduced from in situ measurements. Here we identify some generalized regularity in the protistan distribution, indicating the two separated domains at the 6°C threshold. While Phaeocystis seemed to be a fairly conservative representative of the colder area (<6°C), the taxonomic structure of the warmer waters (>6°C) may vary significantly between successive summers: from mostly Bacillariophyceae-dominated communities in 2015 to flagellate-dominated in 2016. Based on our results, we hypothesized that the more intense phototroph development in the area, as deduced from higher remotely sensed chlorophyll a concentrations in 2016, i.e., record warm year in the observational period, could lead to faster depletion of nutrients and, thus, an earlier shift into the post-bloom community stage. Taking into account the possible phenological shift toward early summer domination of flagellates in a warmer year, as well as a higher number of heterotrophic protists associated with the warmer domain in two evaluated summers, it is highly likely that climatic warming of this region will have an impact on energy transfer to higher trophic levels. Although generalized patterns could be elucidated, more information is needed to predict and understand how the changing Arctic will alter protistan communities and, thus, higher-order consumers. Article in Journal/Newspaper Arctic Fram Strait Greenland Nordic Seas Sea ice Directory of Open Access Journals: DOAJ Articles Arctic Greenland Frontiers in Marine Science 7 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
protists hydrography Atlantic water Nordic Seas Fram Strait Science Q General. Including nature conservation geographical distribution QH1-199.5 |
spellingShingle |
protists hydrography Atlantic water Nordic Seas Fram Strait Science Q General. Including nature conservation geographical distribution QH1-199.5 Anna Maria Dąbrowska Józef Mikołaj Wiktor Małgorzata Merchel Józef Maria Wiktor Planktonic Protists of the Eastern Nordic Seas and the Fram Strait: Spatial Changes Related to Hydrography During Early Summer |
topic_facet |
protists hydrography Atlantic water Nordic Seas Fram Strait Science Q General. Including nature conservation geographical distribution QH1-199.5 |
description |
The European Arctic is rapidly changing where increasing water temperatures and rapid loss of sea ice will likely influence the structure and functioning of the entire ecosystem. This study aimed to describe the taxonomic composition and spatial distribution of early summer (2015–2016) nano- and microplanktonic protists in the Nordic (Norwegian, Greenland) Seas and the Fram Strait (70.99°N to 78.84°N; 1.52°E to 19.90°E) and to determine the distribution patterns of the communities from the aspect of hydrography, as deduced from in situ measurements. Here we identify some generalized regularity in the protistan distribution, indicating the two separated domains at the 6°C threshold. While Phaeocystis seemed to be a fairly conservative representative of the colder area (<6°C), the taxonomic structure of the warmer waters (>6°C) may vary significantly between successive summers: from mostly Bacillariophyceae-dominated communities in 2015 to flagellate-dominated in 2016. Based on our results, we hypothesized that the more intense phototroph development in the area, as deduced from higher remotely sensed chlorophyll a concentrations in 2016, i.e., record warm year in the observational period, could lead to faster depletion of nutrients and, thus, an earlier shift into the post-bloom community stage. Taking into account the possible phenological shift toward early summer domination of flagellates in a warmer year, as well as a higher number of heterotrophic protists associated with the warmer domain in two evaluated summers, it is highly likely that climatic warming of this region will have an impact on energy transfer to higher trophic levels. Although generalized patterns could be elucidated, more information is needed to predict and understand how the changing Arctic will alter protistan communities and, thus, higher-order consumers. |
format |
Article in Journal/Newspaper |
author |
Anna Maria Dąbrowska Józef Mikołaj Wiktor Małgorzata Merchel Józef Maria Wiktor |
author_facet |
Anna Maria Dąbrowska Józef Mikołaj Wiktor Małgorzata Merchel Józef Maria Wiktor |
author_sort |
Anna Maria Dąbrowska |
title |
Planktonic Protists of the Eastern Nordic Seas and the Fram Strait: Spatial Changes Related to Hydrography During Early Summer |
title_short |
Planktonic Protists of the Eastern Nordic Seas and the Fram Strait: Spatial Changes Related to Hydrography During Early Summer |
title_full |
Planktonic Protists of the Eastern Nordic Seas and the Fram Strait: Spatial Changes Related to Hydrography During Early Summer |
title_fullStr |
Planktonic Protists of the Eastern Nordic Seas and the Fram Strait: Spatial Changes Related to Hydrography During Early Summer |
title_full_unstemmed |
Planktonic Protists of the Eastern Nordic Seas and the Fram Strait: Spatial Changes Related to Hydrography During Early Summer |
title_sort |
planktonic protists of the eastern nordic seas and the fram strait: spatial changes related to hydrography during early summer |
publisher |
Frontiers Media S.A. |
publishDate |
2020 |
url |
https://doi.org/10.3389/fmars.2020.00557 https://doaj.org/article/e9612938ac23458b911b696db9367bc6 |
geographic |
Arctic Greenland |
geographic_facet |
Arctic Greenland |
genre |
Arctic Fram Strait Greenland Nordic Seas Sea ice |
genre_facet |
Arctic Fram Strait Greenland Nordic Seas Sea ice |
op_source |
Frontiers in Marine Science, Vol 7 (2020) |
op_relation |
https://www.frontiersin.org/article/10.3389/fmars.2020.00557/full https://doaj.org/toc/2296-7745 2296-7745 doi:10.3389/fmars.2020.00557 https://doaj.org/article/e9612938ac23458b911b696db9367bc6 |
op_doi |
https://doi.org/10.3389/fmars.2020.00557 |
container_title |
Frontiers in Marine Science |
container_volume |
7 |
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1766333936052469760 |