Lower prokaryotic leucine incorporation rates under in situ pressure than under decompressed conditions in the deep north Atlantic
Comunicación oral Prokaryotic activity and community composition is highly depth-stratified in the oceanic water column reflecting the increasing recalcitrance of dissolved organic matter and decreasing temperature with depth. The role of increasing hydrostatic pressure in controlling deep ocean mic...
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Centro Oceanográfico de A Coruña
2015
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ftcsic:oai:digital.csic.es:10261/316442 2024-02-11T10:06:05+01:00 Lower prokaryotic leucine incorporation rates under in situ pressure than under decompressed conditions in the deep north Atlantic Amano-Sato, C. Sintes, E. (Eva) Reinthaler, T. Varela, M.M. (Marta María) Utsumi, M. Herndl, G.J. Granada (España) 2014 Atlantic Ocean North Atlantic 2015-09-30T10:17:21Z http://hdl.handle.net/10508/9692 http://hdl.handle.net/10261/316442 en eng Centro Oceanográfico de A Coruña Moduplan http://hdl.handle.net/10508/9692 http://hdl.handle.net/10261/316442 ID:25629 2015 Aquatic Science Meeting: Global and Regional Perspectives-North meets South. (22/02/2015 - 27/02/2015. Granada(España)). 2015. ID:25629. En: , . 21344 open lower prokaryotic leucine incorporation rates in situ pressure decompressed conditions deep north Atlantic conference output 2015 ftcsic 2024-01-16T11:44:31Z Comunicación oral Prokaryotic activity and community composition is highly depth-stratified in the oceanic water column reflecting the increasing recalcitrance of dissolved organic matter and decreasing temperature with depth. The role of increasing hydrostatic pressure in controlling deep ocean microbial activity is less well-studied. To determine the influence in hydrostatic pressure on heterotrophic microbial activity, an in situ incubator was deployed in the North Atlantic Ocean at a depth between 500 to 2000 m. The in situ incubator was programmed to collect and incubate prokaryotes under the water after adding 3H-leucine and to fix a certain volume of the incubated samples at specific time intervals (3 to 10 h depending on the depth). Prokaryotic leucine incorporation obtained under in situ pressure conditions was generally lower than that on decompressed samples incubated on board. Ratios of in situ prokaryotic leucine incorporation to decompressed conditions decreased with increasing depth. Our results suggest that bulk heterotrophic prokaryotic production in the deep sea might be lower than expected. Conference Object North Atlantic Digital.CSIC (Spanish National Research Council) |
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Digital.CSIC (Spanish National Research Council) |
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ftcsic |
language |
English |
topic |
lower prokaryotic leucine incorporation rates in situ pressure decompressed conditions deep north Atlantic |
spellingShingle |
lower prokaryotic leucine incorporation rates in situ pressure decompressed conditions deep north Atlantic Amano-Sato, C. Sintes, E. (Eva) Reinthaler, T. Varela, M.M. (Marta María) Utsumi, M. Herndl, G.J. Lower prokaryotic leucine incorporation rates under in situ pressure than under decompressed conditions in the deep north Atlantic |
topic_facet |
lower prokaryotic leucine incorporation rates in situ pressure decompressed conditions deep north Atlantic |
description |
Comunicación oral Prokaryotic activity and community composition is highly depth-stratified in the oceanic water column reflecting the increasing recalcitrance of dissolved organic matter and decreasing temperature with depth. The role of increasing hydrostatic pressure in controlling deep ocean microbial activity is less well-studied. To determine the influence in hydrostatic pressure on heterotrophic microbial activity, an in situ incubator was deployed in the North Atlantic Ocean at a depth between 500 to 2000 m. The in situ incubator was programmed to collect and incubate prokaryotes under the water after adding 3H-leucine and to fix a certain volume of the incubated samples at specific time intervals (3 to 10 h depending on the depth). Prokaryotic leucine incorporation obtained under in situ pressure conditions was generally lower than that on decompressed samples incubated on board. Ratios of in situ prokaryotic leucine incorporation to decompressed conditions decreased with increasing depth. Our results suggest that bulk heterotrophic prokaryotic production in the deep sea might be lower than expected. |
format |
Conference Object |
author |
Amano-Sato, C. Sintes, E. (Eva) Reinthaler, T. Varela, M.M. (Marta María) Utsumi, M. Herndl, G.J. |
author_facet |
Amano-Sato, C. Sintes, E. (Eva) Reinthaler, T. Varela, M.M. (Marta María) Utsumi, M. Herndl, G.J. |
author_sort |
Amano-Sato, C. |
title |
Lower prokaryotic leucine incorporation rates under in situ pressure than under decompressed conditions in the deep north Atlantic |
title_short |
Lower prokaryotic leucine incorporation rates under in situ pressure than under decompressed conditions in the deep north Atlantic |
title_full |
Lower prokaryotic leucine incorporation rates under in situ pressure than under decompressed conditions in the deep north Atlantic |
title_fullStr |
Lower prokaryotic leucine incorporation rates under in situ pressure than under decompressed conditions in the deep north Atlantic |
title_full_unstemmed |
Lower prokaryotic leucine incorporation rates under in situ pressure than under decompressed conditions in the deep north Atlantic |
title_sort |
lower prokaryotic leucine incorporation rates under in situ pressure than under decompressed conditions in the deep north atlantic |
publisher |
Centro Oceanográfico de A Coruña |
publishDate |
2015 |
url |
http://hdl.handle.net/10508/9692 http://hdl.handle.net/10261/316442 |
op_coverage |
Granada (España) 2014 Atlantic Ocean North Atlantic |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
Moduplan http://hdl.handle.net/10508/9692 http://hdl.handle.net/10261/316442 ID:25629 2015 Aquatic Science Meeting: Global and Regional Perspectives-North meets South. (22/02/2015 - 27/02/2015. Granada(España)). 2015. ID:25629. En: , . 21344 |
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open |
_version_ |
1790603507338838016 |