The influence of light and water mass on bacterial population dynamics in the Amundsen Sea Polynya
Special Collection: Special Feature: ASPIRE: The Amundsen Sea Polynya International Research Expedition.-- 17 pages, 4 figures, 7 tables Despite being perpetually cold, seasonally ice-covered and dark, the coastal Southern Ocean is highly productive and harbors a diverse microbiota. During the austr...
Published in: | Elementa: Science of the Anthropocene |
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Online Access: | http://hdl.handle.net/10261/161717 https://doi.org/10.12952/journal.elementa.000044 https://doi.org/10.13039/100000001 |
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ftcsic:oai:digital.csic.es:10261/161717 2024-02-11T09:55:17+01:00 The influence of light and water mass on bacterial population dynamics in the Amundsen Sea Polynya Richert, Inga Dinasquet, Julie Logares, Ramiro Riemann, Lasse Yager, Patricia L. Wendeberg, Annelie Bertilsson, Stefan National Science Foundation (US) Swedish Research Council 2015-04 http://hdl.handle.net/10261/161717 https://doi.org/10.12952/journal.elementa.000044 https://doi.org/10.13039/100000001 unknown University of California Press Publisher's version https://dx.doi.org/10.12952/journal.elementa.000044 Sí doi:10.12952/journal.elementa.000044 issn: 2325-1026 Elementa: Science of the Anthropocene 3: 44 (2015) http://hdl.handle.net/10261/161717 http://dx.doi.org/10.13039/100000001 open artículo http://purl.org/coar/resource_type/c_6501 2015 ftcsic https://doi.org/10.12952/journal.elementa.00004410.13039/100000001 2024-01-16T10:28:50Z Special Collection: Special Feature: ASPIRE: The Amundsen Sea Polynya International Research Expedition.-- 17 pages, 4 figures, 7 tables Despite being perpetually cold, seasonally ice-covered and dark, the coastal Southern Ocean is highly productive and harbors a diverse microbiota. During the austral summer, ice-free coastal patches (or polynyas) form, exposing pelagic organisms to sunlight, triggering intense phytoplankton blooms. This strong seasonality is likely to influence bacterioplankton community composition (BCC). For the most part, we do not fully understand the environmental drivers controlling high-latitude BCC and the biogeochemical cycles they mediate. In this study, the Amundsen Sea Polynya was used as a model system to investigate important environmental factors that shape the coastal Southern Ocean microbiota. Population dynamics in terms of occurrence and activity of abundant taxa was studied in both environmental samples and microcosm experiments by using 454 pyrosequencing of 16S rRNA genes. We found that the BCC in the photic epipelagic zone had low richness, with dominant bacterial populations being related to taxa known to benefit from high organic carbon and nutrient loads (copiotrophs). In contrast, the BCC in deeper mesopelagic water masses had higher richness, featuring taxa known to benefit from low organic carbon and nutrient loads (oligotrophs). Incubation experiments indicated that direct impacts of light and competition for organic nutrients are two important factors shaping BCC in the Amundsen Sea Polynya The research was funded by the Swedish Research Council (grants to SB) and by the US National Science Foundation Office of Polar Programs (ANT-0839069 to PY) Peer Reviewed Article in Journal/Newspaper Amundsen Sea National Science Foundation Office of Polar Programs Southern Ocean Digital.CSIC (Spanish National Research Council) Amundsen Sea Austral Southern Ocean Elementa: Science of the Anthropocene 3 |
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Open Polar |
collection |
Digital.CSIC (Spanish National Research Council) |
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ftcsic |
language |
unknown |
description |
Special Collection: Special Feature: ASPIRE: The Amundsen Sea Polynya International Research Expedition.-- 17 pages, 4 figures, 7 tables Despite being perpetually cold, seasonally ice-covered and dark, the coastal Southern Ocean is highly productive and harbors a diverse microbiota. During the austral summer, ice-free coastal patches (or polynyas) form, exposing pelagic organisms to sunlight, triggering intense phytoplankton blooms. This strong seasonality is likely to influence bacterioplankton community composition (BCC). For the most part, we do not fully understand the environmental drivers controlling high-latitude BCC and the biogeochemical cycles they mediate. In this study, the Amundsen Sea Polynya was used as a model system to investigate important environmental factors that shape the coastal Southern Ocean microbiota. Population dynamics in terms of occurrence and activity of abundant taxa was studied in both environmental samples and microcosm experiments by using 454 pyrosequencing of 16S rRNA genes. We found that the BCC in the photic epipelagic zone had low richness, with dominant bacterial populations being related to taxa known to benefit from high organic carbon and nutrient loads (copiotrophs). In contrast, the BCC in deeper mesopelagic water masses had higher richness, featuring taxa known to benefit from low organic carbon and nutrient loads (oligotrophs). Incubation experiments indicated that direct impacts of light and competition for organic nutrients are two important factors shaping BCC in the Amundsen Sea Polynya The research was funded by the Swedish Research Council (grants to SB) and by the US National Science Foundation Office of Polar Programs (ANT-0839069 to PY) Peer Reviewed |
author2 |
National Science Foundation (US) Swedish Research Council |
format |
Article in Journal/Newspaper |
author |
Richert, Inga Dinasquet, Julie Logares, Ramiro Riemann, Lasse Yager, Patricia L. Wendeberg, Annelie Bertilsson, Stefan |
spellingShingle |
Richert, Inga Dinasquet, Julie Logares, Ramiro Riemann, Lasse Yager, Patricia L. Wendeberg, Annelie Bertilsson, Stefan The influence of light and water mass on bacterial population dynamics in the Amundsen Sea Polynya |
author_facet |
Richert, Inga Dinasquet, Julie Logares, Ramiro Riemann, Lasse Yager, Patricia L. Wendeberg, Annelie Bertilsson, Stefan |
author_sort |
Richert, Inga |
title |
The influence of light and water mass on bacterial population dynamics in the Amundsen Sea Polynya |
title_short |
The influence of light and water mass on bacterial population dynamics in the Amundsen Sea Polynya |
title_full |
The influence of light and water mass on bacterial population dynamics in the Amundsen Sea Polynya |
title_fullStr |
The influence of light and water mass on bacterial population dynamics in the Amundsen Sea Polynya |
title_full_unstemmed |
The influence of light and water mass on bacterial population dynamics in the Amundsen Sea Polynya |
title_sort |
influence of light and water mass on bacterial population dynamics in the amundsen sea polynya |
publisher |
University of California Press |
publishDate |
2015 |
url |
http://hdl.handle.net/10261/161717 https://doi.org/10.12952/journal.elementa.000044 https://doi.org/10.13039/100000001 |
geographic |
Amundsen Sea Austral Southern Ocean |
geographic_facet |
Amundsen Sea Austral Southern Ocean |
genre |
Amundsen Sea National Science Foundation Office of Polar Programs Southern Ocean |
genre_facet |
Amundsen Sea National Science Foundation Office of Polar Programs Southern Ocean |
op_relation |
Publisher's version https://dx.doi.org/10.12952/journal.elementa.000044 Sí doi:10.12952/journal.elementa.000044 issn: 2325-1026 Elementa: Science of the Anthropocene 3: 44 (2015) http://hdl.handle.net/10261/161717 http://dx.doi.org/10.13039/100000001 |
op_rights |
open |
op_doi |
https://doi.org/10.12952/journal.elementa.00004410.13039/100000001 |
container_title |
Elementa: Science of the Anthropocene |
container_volume |
3 |
_version_ |
1790594844585885696 |