Current Assessment of Water Quality and Biota Characteristics of the Pelagic Ecosystem of the Atlantic Sector of Antarctica: The Multidisciplinary Studies by the Institute of Biology of the Southern Seas
Comprehensive studies of the ecosystem of the Atlantic sector of the Antarctic were carried out in the period between 2020 and 2022, during the 79th and 87th sea expeditions on the R/V “Akademik Mstislav Keldysh”. Concentrations of soluble forms of 15 trace elements, except Mo, in surface waters of...
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ftmdpi:oai:mdpi.com:/2073-4441/14/24/4103/ 2023-08-20T04:02:28+02:00 Current Assessment of Water Quality and Biota Characteristics of the Pelagic Ecosystem of the Atlantic Sector of Antarctica: The Multidisciplinary Studies by the Institute of Biology of the Southern Seas Natalia Mirzoeva Tatiana Polyakova Ernest Samyshev Tatiana Churilova Vladimir Mukhanov Alexandr Melnik Vladislav Proskurnin Evgeny Sakhon Elena Skorokhod Olga Chuzhikova-Proskurnina Elena Chudinovskih Natalia Minkina Natalia Moiseeva Victor Melnikov Artem Paraskiv Lidia Melnik Tatiana Efimova agris 2022-12-16 application/pdf https://doi.org/10.3390/w14244103 EN eng Multidisciplinary Digital Publishing Institute Oceans and Coastal Zones https://dx.doi.org/10.3390/w14244103 https://creativecommons.org/licenses/by/4.0/ Water; Volume 14; Issue 24; Pages: 4103 Euphausia superba Salpa thompsoni mesoparasitic copepods bacterioplankton bioluminescence chlorophyll a optically active components trace elements heavy metals Atlantic sector of the Antarctic Text 2022 ftmdpi https://doi.org/10.3390/w14244103 2023-08-01T07:49:49Z Comprehensive studies of the ecosystem of the Atlantic sector of the Antarctic were carried out in the period between 2020 and 2022, during the 79th and 87th sea expeditions on the R/V “Akademik Mstislav Keldysh”. Concentrations of soluble forms of 15 trace elements, except Mo, in surface waters of the Southern Ocean were matched the lower limit of their background concentrations in oceanic waters. A high spatial variability of chlorophyll a—an indicator of phytoplankton biomass, which is the main food object of the Antarctic krill—was revealed. In the Bransfield Strait, the abundance of bacterioplankton exhibited a weak relationship with water temperature and a pronounced dependence on chlorophyll fluorescence. It was determined, by using the bioluminescence method, that the largest concentrations of larvae and juveniles of krill were noted in the Bransfield Strait, on the shelf of the Antarctic Peninsula. Against the background of a decline in krill abundance in recent years, there has been an intensive development of Salpa thompsoni, the main food competitor of krill. New data on the distribution of mesoparasitic copepods on endemic fish of the Southern Ocean were also obtained, and their pathogenic effect on the body of fish hosts has been revealed. Text Antarc* Antarctic Antarctic Krill Antarctic Peninsula Antarctica Bransfield Strait Euphausia superba Southern Ocean Copepods MDPI Open Access Publishing Antarctic Southern Ocean The Antarctic Antarctic Peninsula Bransfield Strait Water 14 24 4103 |
institution |
Open Polar |
collection |
MDPI Open Access Publishing |
op_collection_id |
ftmdpi |
language |
English |
topic |
Euphausia superba Salpa thompsoni mesoparasitic copepods bacterioplankton bioluminescence chlorophyll a optically active components trace elements heavy metals Atlantic sector of the Antarctic |
spellingShingle |
Euphausia superba Salpa thompsoni mesoparasitic copepods bacterioplankton bioluminescence chlorophyll a optically active components trace elements heavy metals Atlantic sector of the Antarctic Natalia Mirzoeva Tatiana Polyakova Ernest Samyshev Tatiana Churilova Vladimir Mukhanov Alexandr Melnik Vladislav Proskurnin Evgeny Sakhon Elena Skorokhod Olga Chuzhikova-Proskurnina Elena Chudinovskih Natalia Minkina Natalia Moiseeva Victor Melnikov Artem Paraskiv Lidia Melnik Tatiana Efimova Current Assessment of Water Quality and Biota Characteristics of the Pelagic Ecosystem of the Atlantic Sector of Antarctica: The Multidisciplinary Studies by the Institute of Biology of the Southern Seas |
topic_facet |
Euphausia superba Salpa thompsoni mesoparasitic copepods bacterioplankton bioluminescence chlorophyll a optically active components trace elements heavy metals Atlantic sector of the Antarctic |
description |
Comprehensive studies of the ecosystem of the Atlantic sector of the Antarctic were carried out in the period between 2020 and 2022, during the 79th and 87th sea expeditions on the R/V “Akademik Mstislav Keldysh”. Concentrations of soluble forms of 15 trace elements, except Mo, in surface waters of the Southern Ocean were matched the lower limit of their background concentrations in oceanic waters. A high spatial variability of chlorophyll a—an indicator of phytoplankton biomass, which is the main food object of the Antarctic krill—was revealed. In the Bransfield Strait, the abundance of bacterioplankton exhibited a weak relationship with water temperature and a pronounced dependence on chlorophyll fluorescence. It was determined, by using the bioluminescence method, that the largest concentrations of larvae and juveniles of krill were noted in the Bransfield Strait, on the shelf of the Antarctic Peninsula. Against the background of a decline in krill abundance in recent years, there has been an intensive development of Salpa thompsoni, the main food competitor of krill. New data on the distribution of mesoparasitic copepods on endemic fish of the Southern Ocean were also obtained, and their pathogenic effect on the body of fish hosts has been revealed. |
format |
Text |
author |
Natalia Mirzoeva Tatiana Polyakova Ernest Samyshev Tatiana Churilova Vladimir Mukhanov Alexandr Melnik Vladislav Proskurnin Evgeny Sakhon Elena Skorokhod Olga Chuzhikova-Proskurnina Elena Chudinovskih Natalia Minkina Natalia Moiseeva Victor Melnikov Artem Paraskiv Lidia Melnik Tatiana Efimova |
author_facet |
Natalia Mirzoeva Tatiana Polyakova Ernest Samyshev Tatiana Churilova Vladimir Mukhanov Alexandr Melnik Vladislav Proskurnin Evgeny Sakhon Elena Skorokhod Olga Chuzhikova-Proskurnina Elena Chudinovskih Natalia Minkina Natalia Moiseeva Victor Melnikov Artem Paraskiv Lidia Melnik Tatiana Efimova |
author_sort |
Natalia Mirzoeva |
title |
Current Assessment of Water Quality and Biota Characteristics of the Pelagic Ecosystem of the Atlantic Sector of Antarctica: The Multidisciplinary Studies by the Institute of Biology of the Southern Seas |
title_short |
Current Assessment of Water Quality and Biota Characteristics of the Pelagic Ecosystem of the Atlantic Sector of Antarctica: The Multidisciplinary Studies by the Institute of Biology of the Southern Seas |
title_full |
Current Assessment of Water Quality and Biota Characteristics of the Pelagic Ecosystem of the Atlantic Sector of Antarctica: The Multidisciplinary Studies by the Institute of Biology of the Southern Seas |
title_fullStr |
Current Assessment of Water Quality and Biota Characteristics of the Pelagic Ecosystem of the Atlantic Sector of Antarctica: The Multidisciplinary Studies by the Institute of Biology of the Southern Seas |
title_full_unstemmed |
Current Assessment of Water Quality and Biota Characteristics of the Pelagic Ecosystem of the Atlantic Sector of Antarctica: The Multidisciplinary Studies by the Institute of Biology of the Southern Seas |
title_sort |
current assessment of water quality and biota characteristics of the pelagic ecosystem of the atlantic sector of antarctica: the multidisciplinary studies by the institute of biology of the southern seas |
publisher |
Multidisciplinary Digital Publishing Institute |
publishDate |
2022 |
url |
https://doi.org/10.3390/w14244103 |
op_coverage |
agris |
geographic |
Antarctic Southern Ocean The Antarctic Antarctic Peninsula Bransfield Strait |
geographic_facet |
Antarctic Southern Ocean The Antarctic Antarctic Peninsula Bransfield Strait |
genre |
Antarc* Antarctic Antarctic Krill Antarctic Peninsula Antarctica Bransfield Strait Euphausia superba Southern Ocean Copepods |
genre_facet |
Antarc* Antarctic Antarctic Krill Antarctic Peninsula Antarctica Bransfield Strait Euphausia superba Southern Ocean Copepods |
op_source |
Water; Volume 14; Issue 24; Pages: 4103 |
op_relation |
Oceans and Coastal Zones https://dx.doi.org/10.3390/w14244103 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3390/w14244103 |
container_title |
Water |
container_volume |
14 |
container_issue |
24 |
container_start_page |
4103 |
_version_ |
1774712920412782592 |