Phytoplankton community during a coccolithophorid bloom in the Patagonian Shelf: microscopic and high-performance liquid chromatography pigment analyses
We describe the phytoplankton community and biomass during a summer coccolithophorid bloom sampled over the Patagonian shelf (48.5°S–50.5°S). Those phytoplankton species can contribute to the flux of calcium carbonate out of surface waters. Results from both microscope and high-performance liquid ch...
Published in: | Journal of the Marine Biological Association of the United Kingdom |
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2011
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Online Access: | http://dx.doi.org/10.1017/s0025315411000439 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0025315411000439 |
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crcambridgeupr:10.1017/s0025315411000439 2024-04-28T07:59:33+00:00 Phytoplankton community during a coccolithophorid bloom in the Patagonian Shelf: microscopic and high-performance liquid chromatography pigment analyses de Souza, Márcio Silva Mendes, Carlos Rafael Borges Garcia, Virgínia Maria Tavano Pollery, Ricardo Brotas, Vanda 2011 http://dx.doi.org/10.1017/s0025315411000439 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0025315411000439 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Journal of the Marine Biological Association of the United Kingdom volume 92, issue 1, page 13-27 ISSN 0025-3154 1469-7769 Aquatic Science journal-article 2011 crcambridgeupr https://doi.org/10.1017/s0025315411000439 2024-04-09T06:54:42Z We describe the phytoplankton community and biomass during a summer coccolithophorid bloom sampled over the Patagonian shelf (48.5°S–50.5°S). Those phytoplankton species can contribute to the flux of calcium carbonate out of surface waters. Results from both microscope and high-performance liquid chromatography (HPLC) analysis are shown to complement information on the phytoplankton community. From CHEMTAX analysis of HPLC data, the most important organisms and groups identified were the coccolithophorid Emiliania huxleyi , the haptophyte Phaeocystis antarctica , dinoflagellates, diatoms, cryptophytes, prasinophytes and cyanobacteria. Phytoplankton microscope counts were converted into phytoplankton group-specific biovolume estimates. Although some microscope-identified taxa could not be determined by CHEMTAX, e.g. the autotrophic ciliate Myrionecta rubra , cluster analyses from both techniques showed similar results for the main groups. Both Emiliania huxleyi cell concentration and biomass, and the pigment 19′-hexanoyloxyfucoxanthin were the most important biological features during the sampling period. At surface, nitrate was moderately high (0.2–4.2 µM) in coccolithophorid-dominated samples, whereas phosphate (<0.33 µM) and silicate (<1.35 µM) concentrations were low. Among the environmental factors low Si:N ratios were mainly associated with the dominance of E. huxleyi . Competition and probably differential grazing could also promote a coccolithophorid outgrowth over other photoautotrophs during the summer season in the Patagonian shelf. Article in Journal/Newspaper Antarc* Antarctica Cambridge University Press Journal of the Marine Biological Association of the United Kingdom 92 1 13 27 |
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Cambridge University Press |
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language |
English |
topic |
Aquatic Science |
spellingShingle |
Aquatic Science de Souza, Márcio Silva Mendes, Carlos Rafael Borges Garcia, Virgínia Maria Tavano Pollery, Ricardo Brotas, Vanda Phytoplankton community during a coccolithophorid bloom in the Patagonian Shelf: microscopic and high-performance liquid chromatography pigment analyses |
topic_facet |
Aquatic Science |
description |
We describe the phytoplankton community and biomass during a summer coccolithophorid bloom sampled over the Patagonian shelf (48.5°S–50.5°S). Those phytoplankton species can contribute to the flux of calcium carbonate out of surface waters. Results from both microscope and high-performance liquid chromatography (HPLC) analysis are shown to complement information on the phytoplankton community. From CHEMTAX analysis of HPLC data, the most important organisms and groups identified were the coccolithophorid Emiliania huxleyi , the haptophyte Phaeocystis antarctica , dinoflagellates, diatoms, cryptophytes, prasinophytes and cyanobacteria. Phytoplankton microscope counts were converted into phytoplankton group-specific biovolume estimates. Although some microscope-identified taxa could not be determined by CHEMTAX, e.g. the autotrophic ciliate Myrionecta rubra , cluster analyses from both techniques showed similar results for the main groups. Both Emiliania huxleyi cell concentration and biomass, and the pigment 19′-hexanoyloxyfucoxanthin were the most important biological features during the sampling period. At surface, nitrate was moderately high (0.2–4.2 µM) in coccolithophorid-dominated samples, whereas phosphate (<0.33 µM) and silicate (<1.35 µM) concentrations were low. Among the environmental factors low Si:N ratios were mainly associated with the dominance of E. huxleyi . Competition and probably differential grazing could also promote a coccolithophorid outgrowth over other photoautotrophs during the summer season in the Patagonian shelf. |
format |
Article in Journal/Newspaper |
author |
de Souza, Márcio Silva Mendes, Carlos Rafael Borges Garcia, Virgínia Maria Tavano Pollery, Ricardo Brotas, Vanda |
author_facet |
de Souza, Márcio Silva Mendes, Carlos Rafael Borges Garcia, Virgínia Maria Tavano Pollery, Ricardo Brotas, Vanda |
author_sort |
de Souza, Márcio Silva |
title |
Phytoplankton community during a coccolithophorid bloom in the Patagonian Shelf: microscopic and high-performance liquid chromatography pigment analyses |
title_short |
Phytoplankton community during a coccolithophorid bloom in the Patagonian Shelf: microscopic and high-performance liquid chromatography pigment analyses |
title_full |
Phytoplankton community during a coccolithophorid bloom in the Patagonian Shelf: microscopic and high-performance liquid chromatography pigment analyses |
title_fullStr |
Phytoplankton community during a coccolithophorid bloom in the Patagonian Shelf: microscopic and high-performance liquid chromatography pigment analyses |
title_full_unstemmed |
Phytoplankton community during a coccolithophorid bloom in the Patagonian Shelf: microscopic and high-performance liquid chromatography pigment analyses |
title_sort |
phytoplankton community during a coccolithophorid bloom in the patagonian shelf: microscopic and high-performance liquid chromatography pigment analyses |
publisher |
Cambridge University Press (CUP) |
publishDate |
2011 |
url |
http://dx.doi.org/10.1017/s0025315411000439 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0025315411000439 |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_source |
Journal of the Marine Biological Association of the United Kingdom volume 92, issue 1, page 13-27 ISSN 0025-3154 1469-7769 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0025315411000439 |
container_title |
Journal of the Marine Biological Association of the United Kingdom |
container_volume |
92 |
container_issue |
1 |
container_start_page |
13 |
op_container_end_page |
27 |
_version_ |
1797572230211698688 |