Cryptophyte and Photosynthetic Picoeukaryote Abundances in the Bransfield Strait during Austral Summer
A remarkable shift in the species composition and size distribution of the phytoplankton community have been observed in coastal waters along the Antarctic Peninsula over the last three decades. Smaller photoautotrophs such as cryptophytes are becoming more abundant and important for the regional ec...
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2022
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ftdoajarticles:oai:doaj.org/article:47adf476d8894169a3811e41fd8a12b7 2023-05-15T13:44:00+02:00 Cryptophyte and Photosynthetic Picoeukaryote Abundances in the Bransfield Strait during Austral Summer Vladimir Mukhanov Evgeny Sakhon Alexander Polukhin Vladimir Artemiev Eugene Morozov An-Yi Tsai 2022-01-01T00:00:00Z https://doi.org/10.3390/w14020185 https://doaj.org/article/47adf476d8894169a3811e41fd8a12b7 EN eng MDPI AG https://www.mdpi.com/2073-4441/14/2/185 https://doaj.org/toc/2073-4441 doi:10.3390/w14020185 2073-4441 https://doaj.org/article/47adf476d8894169a3811e41fd8a12b7 Water, Vol 14, Iss 185, p 185 (2022) cryptophytes nanophytoplankton picophytoplankton photosynthetic picoeukaryotes phytoplankton bloom Bransfield Strait Hydraulic engineering TC1-978 Water supply for domestic and industrial purposes TD201-500 article 2022 ftdoajarticles https://doi.org/10.3390/w14020185 2022-12-30T20:17:16Z A remarkable shift in the species composition and size distribution of the phytoplankton community have been observed in coastal waters along the Antarctic Peninsula over the last three decades. Smaller photoautotrophs such as cryptophytes are becoming more abundant and important for the regional ecosystems. In this study, flow cytometry was used to quantify the smallest phytoplankton in the central Bransfield Strait and explore their distribution across the strait in relation to physical and chemical properties of the two major water masses: the warmer and less saline Transitional Zonal Water with Bellingshausen Sea influence (TBW), and the cold and salty Transitional Zonal Water with Weddell Sea influence (TWW). Pico- and nano-phytoplankton clusters were distinguished and enumerated in the cytograms: photosynthetic picoeukaryotes, cryptophytes (about 9 µm in size), and smaller (3 µm) nanophytoplankton. It was shown that nanophytoplankton developed higher abundances and biomasses in the warmer and less saline TBW. This biotope was characterized by a more diverse community with a pronounced dominance of Cryptophyta in terms of biomass. The results support the hypothesis that increasing melt-water input can potentially support spatial and temporal extent of cryptophytes. The replacement of large diatoms with small cryptophytes leads to a significant shift in trophic processes in favor of the consumers such as salps, which able to graze on smaller prey. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Bellingshausen Sea Bransfield Strait Weddell Sea Directory of Open Access Journals: DOAJ Articles Antarctic Antarctic Peninsula Austral Bellingshausen Sea Bransfield Strait The Antarctic Weddell Weddell Sea Water 14 2 185 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
cryptophytes nanophytoplankton picophytoplankton photosynthetic picoeukaryotes phytoplankton bloom Bransfield Strait Hydraulic engineering TC1-978 Water supply for domestic and industrial purposes TD201-500 |
spellingShingle |
cryptophytes nanophytoplankton picophytoplankton photosynthetic picoeukaryotes phytoplankton bloom Bransfield Strait Hydraulic engineering TC1-978 Water supply for domestic and industrial purposes TD201-500 Vladimir Mukhanov Evgeny Sakhon Alexander Polukhin Vladimir Artemiev Eugene Morozov An-Yi Tsai Cryptophyte and Photosynthetic Picoeukaryote Abundances in the Bransfield Strait during Austral Summer |
topic_facet |
cryptophytes nanophytoplankton picophytoplankton photosynthetic picoeukaryotes phytoplankton bloom Bransfield Strait Hydraulic engineering TC1-978 Water supply for domestic and industrial purposes TD201-500 |
description |
A remarkable shift in the species composition and size distribution of the phytoplankton community have been observed in coastal waters along the Antarctic Peninsula over the last three decades. Smaller photoautotrophs such as cryptophytes are becoming more abundant and important for the regional ecosystems. In this study, flow cytometry was used to quantify the smallest phytoplankton in the central Bransfield Strait and explore their distribution across the strait in relation to physical and chemical properties of the two major water masses: the warmer and less saline Transitional Zonal Water with Bellingshausen Sea influence (TBW), and the cold and salty Transitional Zonal Water with Weddell Sea influence (TWW). Pico- and nano-phytoplankton clusters were distinguished and enumerated in the cytograms: photosynthetic picoeukaryotes, cryptophytes (about 9 µm in size), and smaller (3 µm) nanophytoplankton. It was shown that nanophytoplankton developed higher abundances and biomasses in the warmer and less saline TBW. This biotope was characterized by a more diverse community with a pronounced dominance of Cryptophyta in terms of biomass. The results support the hypothesis that increasing melt-water input can potentially support spatial and temporal extent of cryptophytes. The replacement of large diatoms with small cryptophytes leads to a significant shift in trophic processes in favor of the consumers such as salps, which able to graze on smaller prey. |
format |
Article in Journal/Newspaper |
author |
Vladimir Mukhanov Evgeny Sakhon Alexander Polukhin Vladimir Artemiev Eugene Morozov An-Yi Tsai |
author_facet |
Vladimir Mukhanov Evgeny Sakhon Alexander Polukhin Vladimir Artemiev Eugene Morozov An-Yi Tsai |
author_sort |
Vladimir Mukhanov |
title |
Cryptophyte and Photosynthetic Picoeukaryote Abundances in the Bransfield Strait during Austral Summer |
title_short |
Cryptophyte and Photosynthetic Picoeukaryote Abundances in the Bransfield Strait during Austral Summer |
title_full |
Cryptophyte and Photosynthetic Picoeukaryote Abundances in the Bransfield Strait during Austral Summer |
title_fullStr |
Cryptophyte and Photosynthetic Picoeukaryote Abundances in the Bransfield Strait during Austral Summer |
title_full_unstemmed |
Cryptophyte and Photosynthetic Picoeukaryote Abundances in the Bransfield Strait during Austral Summer |
title_sort |
cryptophyte and photosynthetic picoeukaryote abundances in the bransfield strait during austral summer |
publisher |
MDPI AG |
publishDate |
2022 |
url |
https://doi.org/10.3390/w14020185 https://doaj.org/article/47adf476d8894169a3811e41fd8a12b7 |
geographic |
Antarctic Antarctic Peninsula Austral Bellingshausen Sea Bransfield Strait The Antarctic Weddell Weddell Sea |
geographic_facet |
Antarctic Antarctic Peninsula Austral Bellingshausen Sea Bransfield Strait The Antarctic Weddell Weddell Sea |
genre |
Antarc* Antarctic Antarctic Peninsula Bellingshausen Sea Bransfield Strait Weddell Sea |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Bellingshausen Sea Bransfield Strait Weddell Sea |
op_source |
Water, Vol 14, Iss 185, p 185 (2022) |
op_relation |
https://www.mdpi.com/2073-4441/14/2/185 https://doaj.org/toc/2073-4441 doi:10.3390/w14020185 2073-4441 https://doaj.org/article/47adf476d8894169a3811e41fd8a12b7 |
op_doi |
https://doi.org/10.3390/w14020185 |
container_title |
Water |
container_volume |
14 |
container_issue |
2 |
container_start_page |
185 |
_version_ |
1766195743870156800 |