Crucial role of Antarctic virioplankton in organic primary aerosol production
Scientific Committee on Antarctic Research Open Science Conference (SCAR 2020), 3-7 August 2020 During the winter season, sea-ice is a refuge of Antarctic microbial communities including phytoplankton, heterotrophic protists, bacteria and viruses. Then, along summer, due to sea ice melting, those mi...
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Scientific Committee on Antarctic Research
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ftcsic:oai:digital.csic.es:10261/236444 2024-02-11T09:58:51+01:00 Crucial role of Antarctic virioplankton in organic primary aerosol production Vaqué, Dolors Sotomayor Garcia, Ana Rocchi, Arianna Berdalet, Elisa Cabrera-Brufau, Miguel García Botín, César Pinxteren, Manuela van Dall'Osto, Manuel 2020-08 http://hdl.handle.net/10261/236444 en eng Scientific Committee on Antarctic Research Sí SCAR Open Science Conference (2020) 978-0-948277-59-7 http://hdl.handle.net/10261/236444 none comunicación de congreso http://purl.org/coar/resource_type/c_5794 2020 ftcsic 2024-01-16T11:06:15Z Scientific Committee on Antarctic Research Open Science Conference (SCAR 2020), 3-7 August 2020 During the winter season, sea-ice is a refuge of Antarctic microbial communities including phytoplankton, heterotrophic protists, bacteria and viruses. Then, along summer, due to sea ice melting, those microorganisms are released to the water and their metabolism and trophic interactions play a key role in the biogeochemical cycles in the ocean. Viral infections on microorganisms produce large quantities of dissolved and particulate organic matter (OM) including cell debris and other colloidal material. This OM may be incorporated in bubble-mediated spray production forming cooling marine aerosols and cloud layers potentially affecting climate. We therefore, tested experimentally the effect of viral lysis on bacteria, heterotrophic protists and phytoplankton, and their contribution to the production of aerosol precursors compounds during a field study carried out near the Antarctic peninsula in February 2019 using fixed and mobile platforms. We performed four experiments on melted sea ice incubated for 48-72 h in 60 L mesocosm (using two treatments: unamended natural viruses and viral addition) and subjected to still and bubbled periods. The generated aerosols were monitored by on-line and off-line aerosol techniques. Our results -systematically for all fourexperiments -showed that after viral addition the microbial mortality (rate of lysed cells/mL/ d) increased. Concurrently, the released organic C, N, P augmented and significantly correlate with the concentration of dissolved organic carbon measured in the sea ice samples. We discuss that our data support the crucial role of virus mediated lysis of microbes on sea-ice-ocean-atmosphere interactions, including aerosol particle production Peer reviewed Conference Object Antarc* Antarctic Antarctic Peninsula SCAR Scientific Committee on Antarctic Research Sea ice Digital.CSIC (Spanish National Research Council) Antarctic Antarctic Peninsula The Antarctic |
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Open Polar |
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Digital.CSIC (Spanish National Research Council) |
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ftcsic |
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English |
description |
Scientific Committee on Antarctic Research Open Science Conference (SCAR 2020), 3-7 August 2020 During the winter season, sea-ice is a refuge of Antarctic microbial communities including phytoplankton, heterotrophic protists, bacteria and viruses. Then, along summer, due to sea ice melting, those microorganisms are released to the water and their metabolism and trophic interactions play a key role in the biogeochemical cycles in the ocean. Viral infections on microorganisms produce large quantities of dissolved and particulate organic matter (OM) including cell debris and other colloidal material. This OM may be incorporated in bubble-mediated spray production forming cooling marine aerosols and cloud layers potentially affecting climate. We therefore, tested experimentally the effect of viral lysis on bacteria, heterotrophic protists and phytoplankton, and their contribution to the production of aerosol precursors compounds during a field study carried out near the Antarctic peninsula in February 2019 using fixed and mobile platforms. We performed four experiments on melted sea ice incubated for 48-72 h in 60 L mesocosm (using two treatments: unamended natural viruses and viral addition) and subjected to still and bubbled periods. The generated aerosols were monitored by on-line and off-line aerosol techniques. Our results -systematically for all fourexperiments -showed that after viral addition the microbial mortality (rate of lysed cells/mL/ d) increased. Concurrently, the released organic C, N, P augmented and significantly correlate with the concentration of dissolved organic carbon measured in the sea ice samples. We discuss that our data support the crucial role of virus mediated lysis of microbes on sea-ice-ocean-atmosphere interactions, including aerosol particle production Peer reviewed |
format |
Conference Object |
author |
Vaqué, Dolors Sotomayor Garcia, Ana Rocchi, Arianna Berdalet, Elisa Cabrera-Brufau, Miguel García Botín, César Pinxteren, Manuela van Dall'Osto, Manuel |
spellingShingle |
Vaqué, Dolors Sotomayor Garcia, Ana Rocchi, Arianna Berdalet, Elisa Cabrera-Brufau, Miguel García Botín, César Pinxteren, Manuela van Dall'Osto, Manuel Crucial role of Antarctic virioplankton in organic primary aerosol production |
author_facet |
Vaqué, Dolors Sotomayor Garcia, Ana Rocchi, Arianna Berdalet, Elisa Cabrera-Brufau, Miguel García Botín, César Pinxteren, Manuela van Dall'Osto, Manuel |
author_sort |
Vaqué, Dolors |
title |
Crucial role of Antarctic virioplankton in organic primary aerosol production |
title_short |
Crucial role of Antarctic virioplankton in organic primary aerosol production |
title_full |
Crucial role of Antarctic virioplankton in organic primary aerosol production |
title_fullStr |
Crucial role of Antarctic virioplankton in organic primary aerosol production |
title_full_unstemmed |
Crucial role of Antarctic virioplankton in organic primary aerosol production |
title_sort |
crucial role of antarctic virioplankton in organic primary aerosol production |
publisher |
Scientific Committee on Antarctic Research |
publishDate |
2020 |
url |
http://hdl.handle.net/10261/236444 |
geographic |
Antarctic Antarctic Peninsula The Antarctic |
geographic_facet |
Antarctic Antarctic Peninsula The Antarctic |
genre |
Antarc* Antarctic Antarctic Peninsula SCAR Scientific Committee on Antarctic Research Sea ice |
genre_facet |
Antarc* Antarctic Antarctic Peninsula SCAR Scientific Committee on Antarctic Research Sea ice |
op_relation |
Sí SCAR Open Science Conference (2020) 978-0-948277-59-7 http://hdl.handle.net/10261/236444 |
op_rights |
none |
_version_ |
1790594641405411328 |