Planktonic primary production and microbial respiration measured by C-14 assimilation and dissolved oxygen changes in coastal waters of the Antarctic Peninsula during austral summer: Implications for carbon flux studies
Oxygen consumption and production and carbon fixation by micro-organisms were measured simultaneously in coastal surface waters near the Antarctic Peninsula. Although there was a good qualitative agreement between the oxygen and carbon measurements, total daily water-column integrated carbon incorpo...
Published in: | Marine Ecology Progress Series |
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Language: | English |
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2018
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Online Access: | http://hdl.handle.net/10553/1429 https://doi.org/10.3354/meps132191 |
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ftunivlaspalmas:oai:accedacris.ulpgc.es:10553/1429 2023-05-15T13:58:41+02:00 Planktonic primary production and microbial respiration measured by C-14 assimilation and dissolved oxygen changes in coastal waters of the Antarctic Peninsula during austral summer: Implications for carbon flux studies Aristegui, J. Montero del Pino, María F. Ballesteros Rodríguez, Salomé Basterretxea Oyarzabal, Gotzon Lenning, Kornelis van Aristegui, Javier Basterretxea, Gotzon Montero, Maria F. 7006816204 7102553402 7004750943 6601976436 16481789200 Biología Oceanografía biológica Facultad de Ciencias del Mar 227201 1878283 2972908 778770 4153799 WOS:Aristegui, J WOS:Montero, MF WOS:Ballesteros, S WOS:Basterretxea, G WOS:vanLenning, K 2018-03-02T09:28:24Z http://hdl.handle.net/10553/1429 https://doi.org/10.3354/meps132191 eng eng Marine Ecology - Progress Series 132 0171-8630 868 http://hdl.handle.net/10553/1429 doi:10.3354/meps132191 0029667080 A1996UD22300018 225337 2728;32728;-;-;- 1-3 WOS:A1996UD22300018 D-5833-2013 D-2314-2011 No ID Sí info:eu-repo/semantics/openAccess Marine Ecology Progress Series [ISSN 0171-8630], v. 132 (1-3), p. 191-201 251001 Oceanografía biológica Biología Productividad primaria Regiones antárticas Respiración microbiana Primary production Microbial respiration Carbon and oxygen fluxes Coastal Antarctic waters info:eu-repo/semantics/Article Article 2018 ftunivlaspalmas https://doi.org/10.3354/meps132191 2021-02-03T00:09:37Z Oxygen consumption and production and carbon fixation by micro-organisms were measured simultaneously in coastal surface waters near the Antarctic Peninsula. Although there was a good qualitative agreement between the oxygen and carbon measurements, total daily water-column integrated carbon incorporation measured by radiocarbon uptake in the particulate fraction underestimated net community production measured by the oxygen method by 29 to 54% (using a photosynthetic quotient of 1.5). Unaccounted-for exudation of dissolved organic carbon during the 14C uptake experiments may explain this discrepancy. Respiratory carbon losses by micro-organisms (largely phytoplankton) ranged between 10 and 50% of gross production, the highest values corresponding to the more productive stations. These estimates are, however, slightly conservative, since they refer to the upper 30 m of the water column, corresponding approximately to the euphotic zone in this region. Our results show that microbial respiration is an important part of the carbon flux of coastal Antarctic plankton. Unless it is considered in carbon flux models, the contribution of higher trophic levels to the carbon fluxes in marine food webs may be seriously overestimated. 201 191 Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Universidad de Las Palmas de Gran Canaria: Acceda Antarctic Antarctic Peninsula Austral The Antarctic Marine Ecology Progress Series 132 191 201 |
institution |
Open Polar |
collection |
Universidad de Las Palmas de Gran Canaria: Acceda |
op_collection_id |
ftunivlaspalmas |
language |
English |
topic |
251001 Oceanografía biológica Biología Productividad primaria Regiones antárticas Respiración microbiana Primary production Microbial respiration Carbon and oxygen fluxes Coastal Antarctic waters |
spellingShingle |
251001 Oceanografía biológica Biología Productividad primaria Regiones antárticas Respiración microbiana Primary production Microbial respiration Carbon and oxygen fluxes Coastal Antarctic waters Aristegui, J. Montero del Pino, María F. Ballesteros Rodríguez, Salomé Basterretxea Oyarzabal, Gotzon Lenning, Kornelis van Planktonic primary production and microbial respiration measured by C-14 assimilation and dissolved oxygen changes in coastal waters of the Antarctic Peninsula during austral summer: Implications for carbon flux studies |
topic_facet |
251001 Oceanografía biológica Biología Productividad primaria Regiones antárticas Respiración microbiana Primary production Microbial respiration Carbon and oxygen fluxes Coastal Antarctic waters |
description |
Oxygen consumption and production and carbon fixation by micro-organisms were measured simultaneously in coastal surface waters near the Antarctic Peninsula. Although there was a good qualitative agreement between the oxygen and carbon measurements, total daily water-column integrated carbon incorporation measured by radiocarbon uptake in the particulate fraction underestimated net community production measured by the oxygen method by 29 to 54% (using a photosynthetic quotient of 1.5). Unaccounted-for exudation of dissolved organic carbon during the 14C uptake experiments may explain this discrepancy. Respiratory carbon losses by micro-organisms (largely phytoplankton) ranged between 10 and 50% of gross production, the highest values corresponding to the more productive stations. These estimates are, however, slightly conservative, since they refer to the upper 30 m of the water column, corresponding approximately to the euphotic zone in this region. Our results show that microbial respiration is an important part of the carbon flux of coastal Antarctic plankton. Unless it is considered in carbon flux models, the contribution of higher trophic levels to the carbon fluxes in marine food webs may be seriously overestimated. 201 191 |
author2 |
Aristegui, Javier Basterretxea, Gotzon Montero, Maria F. 7006816204 7102553402 7004750943 6601976436 16481789200 Biología Oceanografía biológica Facultad de Ciencias del Mar 227201 1878283 2972908 778770 4153799 WOS:Aristegui, J WOS:Montero, MF WOS:Ballesteros, S WOS:Basterretxea, G WOS:vanLenning, K |
format |
Article in Journal/Newspaper |
author |
Aristegui, J. Montero del Pino, María F. Ballesteros Rodríguez, Salomé Basterretxea Oyarzabal, Gotzon Lenning, Kornelis van |
author_facet |
Aristegui, J. Montero del Pino, María F. Ballesteros Rodríguez, Salomé Basterretxea Oyarzabal, Gotzon Lenning, Kornelis van |
author_sort |
Aristegui, J. |
title |
Planktonic primary production and microbial respiration measured by C-14 assimilation and dissolved oxygen changes in coastal waters of the Antarctic Peninsula during austral summer: Implications for carbon flux studies |
title_short |
Planktonic primary production and microbial respiration measured by C-14 assimilation and dissolved oxygen changes in coastal waters of the Antarctic Peninsula during austral summer: Implications for carbon flux studies |
title_full |
Planktonic primary production and microbial respiration measured by C-14 assimilation and dissolved oxygen changes in coastal waters of the Antarctic Peninsula during austral summer: Implications for carbon flux studies |
title_fullStr |
Planktonic primary production and microbial respiration measured by C-14 assimilation and dissolved oxygen changes in coastal waters of the Antarctic Peninsula during austral summer: Implications for carbon flux studies |
title_full_unstemmed |
Planktonic primary production and microbial respiration measured by C-14 assimilation and dissolved oxygen changes in coastal waters of the Antarctic Peninsula during austral summer: Implications for carbon flux studies |
title_sort |
planktonic primary production and microbial respiration measured by c-14 assimilation and dissolved oxygen changes in coastal waters of the antarctic peninsula during austral summer: implications for carbon flux studies |
publishDate |
2018 |
url |
http://hdl.handle.net/10553/1429 https://doi.org/10.3354/meps132191 |
geographic |
Antarctic Antarctic Peninsula Austral The Antarctic |
geographic_facet |
Antarctic Antarctic Peninsula Austral The Antarctic |
genre |
Antarc* Antarctic Antarctic Peninsula |
genre_facet |
Antarc* Antarctic Antarctic Peninsula |
op_source |
Marine Ecology Progress Series [ISSN 0171-8630], v. 132 (1-3), p. 191-201 |
op_relation |
Marine Ecology - Progress Series 132 0171-8630 868 http://hdl.handle.net/10553/1429 doi:10.3354/meps132191 0029667080 A1996UD22300018 225337 2728;32728;-;-;- 1-3 WOS:A1996UD22300018 D-5833-2013 D-2314-2011 No ID Sí |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.3354/meps132191 |
container_title |
Marine Ecology Progress Series |
container_volume |
132 |
container_start_page |
191 |
op_container_end_page |
201 |
_version_ |
1766267023200878592 |