Transition from a mixotrophic/heterotrophic protist community during the dark winter to a photoautotrophic spring community in surface waters of Disko Bay, Greenland
Unicellular eukaryotic plankton communities (protists) are the major basis of the marine food web. The spring bloom is especially important, because of its high biomass. However, it is poorly described how the protist community composition in Arctic surface waters develops from winter to spring. We...
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Online Access: | https://doi.org/10.3389/fmicb.2024.1407888 https://doaj.org/article/986581eef0f4448e9df513f4a605d3bc |
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ftdoajarticles:oai:doaj.org/article:986581eef0f4448e9df513f4a605d3bc 2024-09-09T19:26:29+00:00 Transition from a mixotrophic/heterotrophic protist community during the dark winter to a photoautotrophic spring community in surface waters of Disko Bay, Greenland Claudia Sabine Bruhn Nina Lundholm Per Juel Hansen Sylke Wohlrab Uwe John 2024-06-01T00:00:00Z https://doi.org/10.3389/fmicb.2024.1407888 https://doaj.org/article/986581eef0f4448e9df513f4a605d3bc EN eng Frontiers Media S.A. https://www.frontiersin.org/articles/10.3389/fmicb.2024.1407888/full https://doaj.org/toc/1664-302X 1664-302X doi:10.3389/fmicb.2024.1407888 https://doaj.org/article/986581eef0f4448e9df513f4a605d3bc Frontiers in Microbiology, Vol 15 (2024) sea ice succession patterns metabarcoding spring bloom formation parasites functional diversity Microbiology QR1-502 article 2024 ftdoajarticles https://doi.org/10.3389/fmicb.2024.1407888 2024-08-05T17:49:16Z Unicellular eukaryotic plankton communities (protists) are the major basis of the marine food web. The spring bloom is especially important, because of its high biomass. However, it is poorly described how the protist community composition in Arctic surface waters develops from winter to spring. We show that mixotrophic and parasitic organisms are prominent in the dark winter period. The transition period toward the spring bloom event was characterized by a high relative abundance of mixotrophic dinoflagellates, while centric diatoms and the haptophyte Phaeocystis pouchetii dominated the successive phototrophic spring bloom event during the study. The data shows a continuous community shift from winter to spring, and not just a dormant spring community waiting for the right environmental conditions. The spring bloom initiation commenced while sea ice was still scattering and absorbing the sunlight, inhibiting its penetration into the water column. The initial increase in fluorescence was detected relatively deep in the water column at ~55 m depth at the halocline, at which the photosynthetic cells accumulated, while a thick layer of snow and sea ice was still obstructing sunlight penetration of the surface water. This suggests that water column stratification and a complex interplay of abiotic factors eventually promote the spring bloom initiation. Article in Journal/Newspaper Arctic Disko Bay Greenland Sea ice Directory of Open Access Journals: DOAJ Articles Arctic Greenland Frontiers in Microbiology 15 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
sea ice succession patterns metabarcoding spring bloom formation parasites functional diversity Microbiology QR1-502 |
spellingShingle |
sea ice succession patterns metabarcoding spring bloom formation parasites functional diversity Microbiology QR1-502 Claudia Sabine Bruhn Nina Lundholm Per Juel Hansen Sylke Wohlrab Uwe John Transition from a mixotrophic/heterotrophic protist community during the dark winter to a photoautotrophic spring community in surface waters of Disko Bay, Greenland |
topic_facet |
sea ice succession patterns metabarcoding spring bloom formation parasites functional diversity Microbiology QR1-502 |
description |
Unicellular eukaryotic plankton communities (protists) are the major basis of the marine food web. The spring bloom is especially important, because of its high biomass. However, it is poorly described how the protist community composition in Arctic surface waters develops from winter to spring. We show that mixotrophic and parasitic organisms are prominent in the dark winter period. The transition period toward the spring bloom event was characterized by a high relative abundance of mixotrophic dinoflagellates, while centric diatoms and the haptophyte Phaeocystis pouchetii dominated the successive phototrophic spring bloom event during the study. The data shows a continuous community shift from winter to spring, and not just a dormant spring community waiting for the right environmental conditions. The spring bloom initiation commenced while sea ice was still scattering and absorbing the sunlight, inhibiting its penetration into the water column. The initial increase in fluorescence was detected relatively deep in the water column at ~55 m depth at the halocline, at which the photosynthetic cells accumulated, while a thick layer of snow and sea ice was still obstructing sunlight penetration of the surface water. This suggests that water column stratification and a complex interplay of abiotic factors eventually promote the spring bloom initiation. |
format |
Article in Journal/Newspaper |
author |
Claudia Sabine Bruhn Nina Lundholm Per Juel Hansen Sylke Wohlrab Uwe John |
author_facet |
Claudia Sabine Bruhn Nina Lundholm Per Juel Hansen Sylke Wohlrab Uwe John |
author_sort |
Claudia Sabine Bruhn |
title |
Transition from a mixotrophic/heterotrophic protist community during the dark winter to a photoautotrophic spring community in surface waters of Disko Bay, Greenland |
title_short |
Transition from a mixotrophic/heterotrophic protist community during the dark winter to a photoautotrophic spring community in surface waters of Disko Bay, Greenland |
title_full |
Transition from a mixotrophic/heterotrophic protist community during the dark winter to a photoautotrophic spring community in surface waters of Disko Bay, Greenland |
title_fullStr |
Transition from a mixotrophic/heterotrophic protist community during the dark winter to a photoautotrophic spring community in surface waters of Disko Bay, Greenland |
title_full_unstemmed |
Transition from a mixotrophic/heterotrophic protist community during the dark winter to a photoautotrophic spring community in surface waters of Disko Bay, Greenland |
title_sort |
transition from a mixotrophic/heterotrophic protist community during the dark winter to a photoautotrophic spring community in surface waters of disko bay, greenland |
publisher |
Frontiers Media S.A. |
publishDate |
2024 |
url |
https://doi.org/10.3389/fmicb.2024.1407888 https://doaj.org/article/986581eef0f4448e9df513f4a605d3bc |
geographic |
Arctic Greenland |
geographic_facet |
Arctic Greenland |
genre |
Arctic Disko Bay Greenland Sea ice |
genre_facet |
Arctic Disko Bay Greenland Sea ice |
op_source |
Frontiers in Microbiology, Vol 15 (2024) |
op_relation |
https://www.frontiersin.org/articles/10.3389/fmicb.2024.1407888/full https://doaj.org/toc/1664-302X 1664-302X doi:10.3389/fmicb.2024.1407888 https://doaj.org/article/986581eef0f4448e9df513f4a605d3bc |
op_doi |
https://doi.org/10.3389/fmicb.2024.1407888 |
container_title |
Frontiers in Microbiology |
container_volume |
15 |
_version_ |
1809896087372169216 |