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...
Published in: | Frontiers in Microbiology |
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Format: | Article in Journal/Newspaper |
Language: | English |
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2024
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Online Access: | https://curis.ku.dk/portal/da/publications/transition-from-a-mixotrophicheterotrophic-protist-community-during-the-dark-winter-to-a-photoautotrophic-spring-community-in-surface-waters-of-disko-bay-greenland(8b3ce87d-f9c8-4d42-ab9c-f708ab7efec6).html https://doi.org/10.3389/fmicb.2024.1407888 https://curis.ku.dk/ws/files/396089544/fmicb_15_1407888.pdf |
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ftcopenhagenunip:oai:pure.atira.dk:publications/8b3ce87d-f9c8-4d42-ab9c-f708ab7efec6 2024-09-15T18:03:44+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 Bruhn, Claudia Sabine Lundholm, Nina Hansen, Per Juel Wohlrab, Sylke John, Uwe 2024 application/pdf https://curis.ku.dk/portal/da/publications/transition-from-a-mixotrophicheterotrophic-protist-community-during-the-dark-winter-to-a-photoautotrophic-spring-community-in-surface-waters-of-disko-bay-greenland(8b3ce87d-f9c8-4d42-ab9c-f708ab7efec6).html https://doi.org/10.3389/fmicb.2024.1407888 https://curis.ku.dk/ws/files/396089544/fmicb_15_1407888.pdf eng eng info:eu-repo/semantics/openAccess Bruhn , C S , Lundholm , N , Hansen , P J , Wohlrab , S & John , U 2024 , ' Transition from a mixotrophic/heterotrophic protist community during the dark winter to a photoautotrophic spring community in surface waters of Disko Bay, Greenland ' , Frontiers in Microbiology , vol. 15 , 1407888 . https://doi.org/10.3389/fmicb.2024.1407888 article 2024 ftcopenhagenunip https://doi.org/10.3389/fmicb.2024.1407888 2024-09-02T14:28:57Z 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. 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 ... Article in Journal/Newspaper Disko Bay Greenland Sea ice University of Copenhagen: Research Frontiers in Microbiology 15 |
institution |
Open Polar |
collection |
University of Copenhagen: Research |
op_collection_id |
ftcopenhagenunip |
language |
English |
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. 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 ... |
format |
Article in Journal/Newspaper |
author |
Bruhn, Claudia Sabine Lundholm, Nina Hansen, Per Juel Wohlrab, Sylke John, Uwe |
spellingShingle |
Bruhn, Claudia Sabine Lundholm, Nina Hansen, Per Juel Wohlrab, Sylke John, Uwe Transition from a mixotrophic/heterotrophic protist community during the dark winter to a photoautotrophic spring community in surface waters of Disko Bay, Greenland |
author_facet |
Bruhn, Claudia Sabine Lundholm, Nina Hansen, Per Juel Wohlrab, Sylke John, Uwe |
author_sort |
Bruhn, Claudia Sabine |
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 |
publishDate |
2024 |
url |
https://curis.ku.dk/portal/da/publications/transition-from-a-mixotrophicheterotrophic-protist-community-during-the-dark-winter-to-a-photoautotrophic-spring-community-in-surface-waters-of-disko-bay-greenland(8b3ce87d-f9c8-4d42-ab9c-f708ab7efec6).html https://doi.org/10.3389/fmicb.2024.1407888 https://curis.ku.dk/ws/files/396089544/fmicb_15_1407888.pdf |
genre |
Disko Bay Greenland Sea ice |
genre_facet |
Disko Bay Greenland Sea ice |
op_source |
Bruhn , C S , Lundholm , N , Hansen , P J , Wohlrab , S & John , U 2024 , ' Transition from a mixotrophic/heterotrophic protist community during the dark winter to a photoautotrophic spring community in surface waters of Disko Bay, Greenland ' , Frontiers in Microbiology , vol. 15 , 1407888 . https://doi.org/10.3389/fmicb.2024.1407888 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.3389/fmicb.2024.1407888 |
container_title |
Frontiers in Microbiology |
container_volume |
15 |
_version_ |
1810441215736283136 |