Changes in bacterial activity and community composition in response to water mass mixing
Poster Mixing zones and boundaries between different water masses are "hot spots" of marine biodiversity and activity. We aimed to investigate the effects of water mass mixing in the dark-ocean microbial communities by collecting and incubating natural bacterial communities from the Medite...
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Centro Oceanográfico de A Coruña
2017
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ftcsic:oai:digital.csic.es:10261/316450 2024-02-11T10:05:36+01:00 Changes in bacterial activity and community composition in response to water mass mixing Rodríguez-Ramos, T. (Tamara) Guerrero-Feijóo, E. (Elisa) Nieto-Cid, M. (Mar) Sintes, E. (Eva) Varela, M.M. (Marta María) Zagreb (Croacia) 2017 2017-09-26T13:56:53Z http://hdl.handle.net/10508/11314 http://hdl.handle.net/10261/316450 en eng Centro Oceanográfico de A Coruña http://hdl.handle.net/10508/11314 http://hdl.handle.net/10261/316450 SAME15-15th Symposium on Aquatic Microbial Ecology. (03/09/2017 - 08/09/2017. Zagreb (Croacia)). 2017. . En: , . 2017: - open dark ocean bacterial activity bacterial diversity water mass mixing dissolved organic matter limnology optical properties hot spots leucine marine microbiology bacterial community conference poster 2017 ftcsic 2024-01-16T11:44:31Z Poster Mixing zones and boundaries between different water masses are "hot spots" of marine biodiversity and activity. We aimed to investigate the effects of water mass mixing in the dark-ocean microbial communities by collecting and incubating natural bacterial communities from the Mediterranean Water (MW; at 1000 m depth), the Subpolar Modal Water (SPMW, 500m) and the Labrador Sea Water (LSW, 1800 m), and comparing them with artificially mixed communities. Mixing experiment 1 consisted of incubating at in sity conditions the original LSW and MW communities, plus a mixture of both (MIX1, dilution 1:1), whereas the Mixing experiment 2 included the original prokaryotic communities from SPMW and MW and a mixture of both (MIX2, dilution 1:1). Bacterial abundance and activity was monitored every 24 h over 8 days, while bacterial community composition and DOM characterization were assessed at the beginning (day 0), middle (day 4) and at the end of the experiment (day 8). Live prokaryotic cell abundance was higher in the MIX1 and MIX2 treatments as compared to the original communities. Moreover, MIX bacteria showed slightly higher leucine incorporation rates than MW or LSW. These metabolic responses were accompanied by changes in the optical properties of DOM, suggesting a change in the dynamics of the organic matter. Taken together, our results indicate differences in the bio-reactvity of the organic matter after mixing as compared to the original water masses that could influence the composition and activity of the bacterial community. Still Image Labrador Sea Digital.CSIC (Spanish National Research Council) |
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Open Polar |
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Digital.CSIC (Spanish National Research Council) |
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ftcsic |
language |
English |
topic |
dark ocean bacterial activity bacterial diversity water mass mixing dissolved organic matter limnology optical properties hot spots leucine marine microbiology bacterial community |
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dark ocean bacterial activity bacterial diversity water mass mixing dissolved organic matter limnology optical properties hot spots leucine marine microbiology bacterial community Rodríguez-Ramos, T. (Tamara) Guerrero-Feijóo, E. (Elisa) Nieto-Cid, M. (Mar) Sintes, E. (Eva) Varela, M.M. (Marta María) Changes in bacterial activity and community composition in response to water mass mixing |
topic_facet |
dark ocean bacterial activity bacterial diversity water mass mixing dissolved organic matter limnology optical properties hot spots leucine marine microbiology bacterial community |
description |
Poster Mixing zones and boundaries between different water masses are "hot spots" of marine biodiversity and activity. We aimed to investigate the effects of water mass mixing in the dark-ocean microbial communities by collecting and incubating natural bacterial communities from the Mediterranean Water (MW; at 1000 m depth), the Subpolar Modal Water (SPMW, 500m) and the Labrador Sea Water (LSW, 1800 m), and comparing them with artificially mixed communities. Mixing experiment 1 consisted of incubating at in sity conditions the original LSW and MW communities, plus a mixture of both (MIX1, dilution 1:1), whereas the Mixing experiment 2 included the original prokaryotic communities from SPMW and MW and a mixture of both (MIX2, dilution 1:1). Bacterial abundance and activity was monitored every 24 h over 8 days, while bacterial community composition and DOM characterization were assessed at the beginning (day 0), middle (day 4) and at the end of the experiment (day 8). Live prokaryotic cell abundance was higher in the MIX1 and MIX2 treatments as compared to the original communities. Moreover, MIX bacteria showed slightly higher leucine incorporation rates than MW or LSW. These metabolic responses were accompanied by changes in the optical properties of DOM, suggesting a change in the dynamics of the organic matter. Taken together, our results indicate differences in the bio-reactvity of the organic matter after mixing as compared to the original water masses that could influence the composition and activity of the bacterial community. |
format |
Still Image |
author |
Rodríguez-Ramos, T. (Tamara) Guerrero-Feijóo, E. (Elisa) Nieto-Cid, M. (Mar) Sintes, E. (Eva) Varela, M.M. (Marta María) |
author_facet |
Rodríguez-Ramos, T. (Tamara) Guerrero-Feijóo, E. (Elisa) Nieto-Cid, M. (Mar) Sintes, E. (Eva) Varela, M.M. (Marta María) |
author_sort |
Rodríguez-Ramos, T. (Tamara) |
title |
Changes in bacterial activity and community composition in response to water mass mixing |
title_short |
Changes in bacterial activity and community composition in response to water mass mixing |
title_full |
Changes in bacterial activity and community composition in response to water mass mixing |
title_fullStr |
Changes in bacterial activity and community composition in response to water mass mixing |
title_full_unstemmed |
Changes in bacterial activity and community composition in response to water mass mixing |
title_sort |
changes in bacterial activity and community composition in response to water mass mixing |
publisher |
Centro Oceanográfico de A Coruña |
publishDate |
2017 |
url |
http://hdl.handle.net/10508/11314 http://hdl.handle.net/10261/316450 |
op_coverage |
Zagreb (Croacia) 2017 |
genre |
Labrador Sea |
genre_facet |
Labrador Sea |
op_relation |
http://hdl.handle.net/10508/11314 http://hdl.handle.net/10261/316450 SAME15-15th Symposium on Aquatic Microbial Ecology. (03/09/2017 - 08/09/2017. Zagreb (Croacia)). 2017. . En: , . 2017: - |
op_rights |
open |
_version_ |
1790602696160444416 |