Dissolved primary production and the strength of phytoplankton-bacterioplankton coupling in contrasting marine regions
7 pages, 4 figures, 2 tables We analyzed the strength of phytoplankton-bacterioplankton coupling by comparing the rate of particulate (PPP) and dissolved primary production (DPP) with bacterial carbon demand (BCD) in four contrasting marine regions: offshore and coastal waters of the Southern Ocean,...
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Online Access: | http://hdl.handle.net/10261/173385 https://doi.org/10.1007/s00248-002-1026-z |
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ftcsic:oai:digital.csic.es:10261/173385 2024-02-11T09:55:53+01:00 Dissolved primary production and the strength of phytoplankton-bacterioplankton coupling in contrasting marine regions Morán, Xosé Anxelu G. Estrada, Marta Gasol, Josep M. Pedrós-Alió, Carlos 2002-10 http://hdl.handle.net/10261/173385 https://doi.org/10.1007/s00248-002-1026-z unknown Springer https://doi.org/10.1007/s00248-002-1026-z Sí doi:10.1007/s00248-002-1026-z issn: 0095-3628 e-issn: 1432-184X Microbial Ecology 44: 217-223 (2002) http://hdl.handle.net/10261/173385 none artículo http://purl.org/coar/resource_type/c_6501 2002 ftcsic https://doi.org/10.1007/s00248-002-1026-z 2024-01-16T10:34:38Z 7 pages, 4 figures, 2 tables We analyzed the strength of phytoplankton-bacterioplankton coupling by comparing the rate of particulate (PPP) and dissolved primary production (DPP) with bacterial carbon demand (BCD) in four contrasting marine regions: offshore and coastal waters of the Southern Ocean, a coastal area of the NE Atlantic, and a coastal-offshore transect in the NW Mediterranean. We measured bacterial heterotrophic production (BHP) and estimated BCD from a literature model. Average phytoplanktonic percent extracellular release [PER = DPP/(DPP + PPP)] was 18-20% in the Antarctic (offshore and coastal, respectively), 16% in the NW Mediterranean, and 7% in the NE Atlantic. A significant inverse relationship was found between PER and total system productivity with pooled data. On average BHP amounted to <5% of total primary production in all regions. However, the strength of phytoplankton-bacterioplankton coupling, estimated as the potential importance of DPP in meeting BCD, differed greatly in the four regions. DPP was highly correlated to BCD in offshore Antarctic waters and was sufficient to meet BCD. In contrast, BCD exceeded DPP and bore no significant relationship in the remaining regions. The data suggest that a strong dependence of bacteria on algal extracellular production is only expected in openocean environments isolated from coastal inputs of DOC This study was supported by Spanish CICYT Grants ANT-92-1186, ANT-96-0866, MAR95-1901, and AMB94-0853 Peer Reviewed Article in Journal/Newspaper Antarc* Antarctic Southern Ocean Digital.CSIC (Spanish National Research Council) Antarctic Southern Ocean The Antarctic Microbial Ecology 44 3 217 223 |
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Digital.CSIC (Spanish National Research Council) |
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ftcsic |
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7 pages, 4 figures, 2 tables We analyzed the strength of phytoplankton-bacterioplankton coupling by comparing the rate of particulate (PPP) and dissolved primary production (DPP) with bacterial carbon demand (BCD) in four contrasting marine regions: offshore and coastal waters of the Southern Ocean, a coastal area of the NE Atlantic, and a coastal-offshore transect in the NW Mediterranean. We measured bacterial heterotrophic production (BHP) and estimated BCD from a literature model. Average phytoplanktonic percent extracellular release [PER = DPP/(DPP + PPP)] was 18-20% in the Antarctic (offshore and coastal, respectively), 16% in the NW Mediterranean, and 7% in the NE Atlantic. A significant inverse relationship was found between PER and total system productivity with pooled data. On average BHP amounted to <5% of total primary production in all regions. However, the strength of phytoplankton-bacterioplankton coupling, estimated as the potential importance of DPP in meeting BCD, differed greatly in the four regions. DPP was highly correlated to BCD in offshore Antarctic waters and was sufficient to meet BCD. In contrast, BCD exceeded DPP and bore no significant relationship in the remaining regions. The data suggest that a strong dependence of bacteria on algal extracellular production is only expected in openocean environments isolated from coastal inputs of DOC This study was supported by Spanish CICYT Grants ANT-92-1186, ANT-96-0866, MAR95-1901, and AMB94-0853 Peer Reviewed |
format |
Article in Journal/Newspaper |
author |
Morán, Xosé Anxelu G. Estrada, Marta Gasol, Josep M. Pedrós-Alió, Carlos |
spellingShingle |
Morán, Xosé Anxelu G. Estrada, Marta Gasol, Josep M. Pedrós-Alió, Carlos Dissolved primary production and the strength of phytoplankton-bacterioplankton coupling in contrasting marine regions |
author_facet |
Morán, Xosé Anxelu G. Estrada, Marta Gasol, Josep M. Pedrós-Alió, Carlos |
author_sort |
Morán, Xosé Anxelu G. |
title |
Dissolved primary production and the strength of phytoplankton-bacterioplankton coupling in contrasting marine regions |
title_short |
Dissolved primary production and the strength of phytoplankton-bacterioplankton coupling in contrasting marine regions |
title_full |
Dissolved primary production and the strength of phytoplankton-bacterioplankton coupling in contrasting marine regions |
title_fullStr |
Dissolved primary production and the strength of phytoplankton-bacterioplankton coupling in contrasting marine regions |
title_full_unstemmed |
Dissolved primary production and the strength of phytoplankton-bacterioplankton coupling in contrasting marine regions |
title_sort |
dissolved primary production and the strength of phytoplankton-bacterioplankton coupling in contrasting marine regions |
publisher |
Springer |
publishDate |
2002 |
url |
http://hdl.handle.net/10261/173385 https://doi.org/10.1007/s00248-002-1026-z |
geographic |
Antarctic Southern Ocean The Antarctic |
geographic_facet |
Antarctic Southern Ocean The Antarctic |
genre |
Antarc* Antarctic Southern Ocean |
genre_facet |
Antarc* Antarctic Southern Ocean |
op_relation |
https://doi.org/10.1007/s00248-002-1026-z Sí doi:10.1007/s00248-002-1026-z issn: 0095-3628 e-issn: 1432-184X Microbial Ecology 44: 217-223 (2002) http://hdl.handle.net/10261/173385 |
op_rights |
none |
op_doi |
https://doi.org/10.1007/s00248-002-1026-z |
container_title |
Microbial Ecology |
container_volume |
44 |
container_issue |
3 |
container_start_page |
217 |
op_container_end_page |
223 |
_version_ |
1790599335993409536 |