Prokaryotic extracellular enzymatic activity in relation to biomass production and respiration in the meso- and bathypelagic waters of the (sub)tropical Atlantic
17 pages, 9 figures
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2009-03-27
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| Online Access: | http://hdl.handle.net/10261/19755 |
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dig-icm-es-10261-197552020-11-19T08:23:13Z Prokaryotic extracellular enzymatic activity in relation to biomass production and respiration in the meso- and bathypelagic waters of the (sub)tropical Atlantic Baltar, Federico Arístegui, Javier Sintes, Eva van Aken, Hendrik M. Gasol, Josep M. Herndl, Gerhard J. 17 pages, 9 figures Prokaryotic extracellular enzymatic activity, abundance, heterotrophic production and respiration were determined in the meso- and bathypelagic (sub)tropical North Atlantic. While prokaryotic heterotrophic production (PHP) decreased from the lower euphotic layer to the bathypelagic waters by two orders of magnitude, prokaryotic abundance and cell-specific PHP decreased only by one order of magnitude. In contrast to cell-specific PHP, cell-specific extracellular enzymatic activity (alpha- and beta-glucosidase, leucine aminopeptidase, alkaline phosphatase) increased with depth as did cell-specific respiration rates. Cell-specific alkaline phosphatase activity increased from the intermediate water masses to the deep waters up to fivefold. Phosphate concentrations, however, varied only by a factor of two between the different water masses, indicating that phosphatase activity is not related to phosphate availability in the deep waters. Generally, cell-specific extracellular enzymatic activities were inversely related to cell-specific prokaryotic leucine incorporation. Thus, it is apparent that the utilization of deep ocean organic matter is linked to higher cell-specific extracellular enzymatic activity and respiration and lower cell-specific PHP than in surface waters. This research was supported by a predoctoral Fellowship of the Spanish Ministry of Education and Science (AP2005-3932) to F.B., a grant of the Spanish Ministry of Education and Science to J.A. [Remolinos Oceánicos y Deposiciones Atmosféricas (RODA) project; CTM 2004–06842-C03/MAR], and a grant of the Earth and Life Science Division of the Dutch Science Foundation (ALW-NWO; ARCHIMEDES project, 835.20.023) to G.J.H. Peer reviewed 2009-12-21T12:09:54Z 2009-12-21T12:09:54Z 2009-03-27 artículo http://purl.org/coar/resource_type/c_6501 Environmental Microbiology 11(8) : 1998-2014(2009) 1462-2912 http://hdl.handle.net/10261/19755 10.1111/j.1462-2920.2009.01922.x 1462-2920 en https://doi.org/10.1111/j.1462-2920.2009.01922.x none 5875 bytes application/pdf Blackwell Publishing Society for Applied Microbiology |
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biblioteca |
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| language |
English |
| description |
17 pages, 9 figures |
| format |
artículo |
| author |
Baltar, Federico Arístegui, Javier Sintes, Eva van Aken, Hendrik M. Gasol, Josep M. Herndl, Gerhard J. |
| spellingShingle |
Baltar, Federico Arístegui, Javier Sintes, Eva van Aken, Hendrik M. Gasol, Josep M. Herndl, Gerhard J. Prokaryotic extracellular enzymatic activity in relation to biomass production and respiration in the meso- and bathypelagic waters of the (sub)tropical Atlantic |
| author_facet |
Baltar, Federico Arístegui, Javier Sintes, Eva van Aken, Hendrik M. Gasol, Josep M. Herndl, Gerhard J. |
| author_sort |
Baltar, Federico |
| title |
Prokaryotic extracellular enzymatic activity in relation to biomass production and respiration in the meso- and bathypelagic waters of the (sub)tropical Atlantic |
| title_short |
Prokaryotic extracellular enzymatic activity in relation to biomass production and respiration in the meso- and bathypelagic waters of the (sub)tropical Atlantic |
| title_full |
Prokaryotic extracellular enzymatic activity in relation to biomass production and respiration in the meso- and bathypelagic waters of the (sub)tropical Atlantic |
| title_fullStr |
Prokaryotic extracellular enzymatic activity in relation to biomass production and respiration in the meso- and bathypelagic waters of the (sub)tropical Atlantic |
| title_full_unstemmed |
Prokaryotic extracellular enzymatic activity in relation to biomass production and respiration in the meso- and bathypelagic waters of the (sub)tropical Atlantic |
| title_sort |
prokaryotic extracellular enzymatic activity in relation to biomass production and respiration in the meso- and bathypelagic waters of the (sub)tropical atlantic |
| publisher |
Blackwell Publishing |
| publishDate |
2009-03-27 |
| url |
http://hdl.handle.net/10261/19755 |
| work_keys_str_mv |
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