Microbial dynamics in coastal waters of East Antarctica:plankton production and respiration
The rates of plankton community production and respiration were determined from in vitro changes in dissolved inorganic carbon and dissolved oxygen and the incorporation of (NaHCO3)-C-14 at a coastal site in East Antarctica between 16 December 1993 and 12 February 1994. The breakout of seasonal fast...
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ftnerc:oai:nora.nerc.ac.uk:503774 2023-05-15T13:48:08+02:00 Microbial dynamics in coastal waters of East Antarctica:plankton production and respiration Robinson, Carol Archer, Stephen D. Williams, Peter J. le B. 1999 http://nora.nerc.ac.uk/id/eprint/503774/ https://doi.org/10.3354/meps180023 unknown Inter-Research Robinson, Carol; Archer, Stephen D.; Williams, Peter J. le B. 1999 Microbial dynamics in coastal waters of East Antarctica:plankton production and respiration. Marine Ecology Progress Series, 180. 23-36. https://doi.org/10.3354/meps180023 <https://doi.org/10.3354/meps180023> Publication - Article PeerReviewed 1999 ftnerc https://doi.org/10.3354/meps180023 2023-02-04T19:38:02Z The rates of plankton community production and respiration were determined from in vitro changes in dissolved inorganic carbon and dissolved oxygen and the incorporation of (NaHCO3)-C-14 at a coastal site in East Antarctica between 16 December 1993 and 12 February 1994. The breakout of seasonal fast ice was associated with a succession of dominant phytoplankton from Cryptomonas to Phaeocystis to a diatom assemblage. Gross production reached 33 mmol C m(-3) d(-1) and C-14 incorporation peaked at 24 mmol C m(-3) d(-1) on 23 January 1994, at the time of the chlorophyll a maximum (22 mg chi a m(-3)). Dark community respiration reached its maximum (13 mmol C m(-3) d(-1)) 4 d later. Photosynthetic rates calculated from C-14 incorporation were significantly lower (17 to 59%) than rates of gross production. The derivation of plankton processes from changes in both dissolved oxygen and dissolved inorganic carbon allowed the direct measurement of photosynthetic and respiratory quotients. A linear regression of all data gave a photosynthetic quotient of 1.33 +/- 0.23 and a respiratory quotient of 0.88 +/- 0.14. Concurrent determinations of bacterial, heterotrophic dinoflagellate, nanoflagellate and ciliate respiration could account for 15 to 58% of measured dark-community respiration. This study has improved the sparse data set of plankton respiration measurements, confirmed that heterotrophic respiration is a significant process in the carbon flux of coastal Antarctic waters and achieved a first apportionment of community respiration to the major microbial groups in this region Article in Journal/Newspaper Antarc* Antarctic Antarctica East Antarctica Natural Environment Research Council: NERC Open Research Archive Antarctic East Antarctica Marine Ecology Progress Series 180 23 36 |
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Open Polar |
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Natural Environment Research Council: NERC Open Research Archive |
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description |
The rates of plankton community production and respiration were determined from in vitro changes in dissolved inorganic carbon and dissolved oxygen and the incorporation of (NaHCO3)-C-14 at a coastal site in East Antarctica between 16 December 1993 and 12 February 1994. The breakout of seasonal fast ice was associated with a succession of dominant phytoplankton from Cryptomonas to Phaeocystis to a diatom assemblage. Gross production reached 33 mmol C m(-3) d(-1) and C-14 incorporation peaked at 24 mmol C m(-3) d(-1) on 23 January 1994, at the time of the chlorophyll a maximum (22 mg chi a m(-3)). Dark community respiration reached its maximum (13 mmol C m(-3) d(-1)) 4 d later. Photosynthetic rates calculated from C-14 incorporation were significantly lower (17 to 59%) than rates of gross production. The derivation of plankton processes from changes in both dissolved oxygen and dissolved inorganic carbon allowed the direct measurement of photosynthetic and respiratory quotients. A linear regression of all data gave a photosynthetic quotient of 1.33 +/- 0.23 and a respiratory quotient of 0.88 +/- 0.14. Concurrent determinations of bacterial, heterotrophic dinoflagellate, nanoflagellate and ciliate respiration could account for 15 to 58% of measured dark-community respiration. This study has improved the sparse data set of plankton respiration measurements, confirmed that heterotrophic respiration is a significant process in the carbon flux of coastal Antarctic waters and achieved a first apportionment of community respiration to the major microbial groups in this region |
format |
Article in Journal/Newspaper |
author |
Robinson, Carol Archer, Stephen D. Williams, Peter J. le B. |
spellingShingle |
Robinson, Carol Archer, Stephen D. Williams, Peter J. le B. Microbial dynamics in coastal waters of East Antarctica:plankton production and respiration |
author_facet |
Robinson, Carol Archer, Stephen D. Williams, Peter J. le B. |
author_sort |
Robinson, Carol |
title |
Microbial dynamics in coastal waters of East Antarctica:plankton production and respiration |
title_short |
Microbial dynamics in coastal waters of East Antarctica:plankton production and respiration |
title_full |
Microbial dynamics in coastal waters of East Antarctica:plankton production and respiration |
title_fullStr |
Microbial dynamics in coastal waters of East Antarctica:plankton production and respiration |
title_full_unstemmed |
Microbial dynamics in coastal waters of East Antarctica:plankton production and respiration |
title_sort |
microbial dynamics in coastal waters of east antarctica:plankton production and respiration |
publisher |
Inter-Research |
publishDate |
1999 |
url |
http://nora.nerc.ac.uk/id/eprint/503774/ https://doi.org/10.3354/meps180023 |
geographic |
Antarctic East Antarctica |
geographic_facet |
Antarctic East Antarctica |
genre |
Antarc* Antarctic Antarctica East Antarctica |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica |
op_relation |
Robinson, Carol; Archer, Stephen D.; Williams, Peter J. le B. 1999 Microbial dynamics in coastal waters of East Antarctica:plankton production and respiration. Marine Ecology Progress Series, 180. 23-36. https://doi.org/10.3354/meps180023 <https://doi.org/10.3354/meps180023> |
op_doi |
https://doi.org/10.3354/meps180023 |
container_title |
Marine Ecology Progress Series |
container_volume |
180 |
container_start_page |
23 |
op_container_end_page |
36 |
_version_ |
1766248700378611712 |