Coccolithophore size, abundance and calcification across Drake Passage (Southern Ocean), 2009

Although coccolithophores are not as numerically common or as diverse in the Southern Ocean as they are in subpolar waters of the North Atlantic, a few species, such as Emiliania huxleyi, are found during the summer months. Little is actually known about the calcite production (CP) of these communit...

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Main Authors: Tyrrell, Toby, Charalampopoulou, Anastasia
Format: Dataset
Language:English
Published: PANGAEA 2009
Subjects:
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.771715
https://doi.org/10.1594/PANGAEA.771715
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record_format openpolar
spelling ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.771715 2023-05-15T13:42:10+02:00 Coccolithophore size, abundance and calcification across Drake Passage (Southern Ocean), 2009 Tyrrell, Toby Charalampopoulou, Anastasia MEDIAN LATITUDE: -58.679299 * MEDIAN LONGITUDE: -59.772582 * SOUTH-BOUND LATITUDE: -63.810000 * WEST-BOUND LONGITUDE: -68.332200 * NORTH-BOUND LATITUDE: -53.520000 * EAST-BOUND LONGITUDE: -38.250800 * DATE/TIME START: 2009-02-06T01:09:00 * DATE/TIME END: 2009-02-26T15:13:00 2009-11-21 application/zip, 2 datasets https://doi.pangaea.de/10.1594/PANGAEA.771715 https://doi.org/10.1594/PANGAEA.771715 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.771715 https://doi.org/10.1594/PANGAEA.771715 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Charalampopoulou, Anastasia; Poulton, Alex J; Bakker, Dorothee C E; Lucas, Mike I; Stinchcombe, Mark Colin; Tyrrell, Toby (2016): Environmental drivers of coccolithophore abundance and calcification across Drake Passage (Southern Ocean). Biogeosciences, 13(21), 5917-5935, https://doi.org/10.5194/bg-13-5917-2016 EPOCA European Project on Ocean Acidification Dataset 2009 ftpangaea https://doi.org/10.1594/PANGAEA.771715 https://doi.org/10.5194/bg-13-5917-2016 2023-01-20T07:32:20Z Although coccolithophores are not as numerically common or as diverse in the Southern Ocean as they are in subpolar waters of the North Atlantic, a few species, such as Emiliania huxleyi, are found during the summer months. Little is actually known about the calcite production (CP) of these communities or how their distribution and physiology relate to environmental variables in this region. In February 2009, we made observations across Drake Passage (between South America and the Antarctic Peninsula) of coccolithophore distribution, CP, primary production, chlorophyll a and macronutrient concentrations, irradiance and carbonate chemistry. Although CP represented less than 1 % of total carbon fixation, coccolithophores were widespread across Drake Passage. The B/C morphotype of E. huxleyi was the dominant coccolithophore, with low estimates of coccolith calcite (~0.01 pmol C coccolith-1) from biometric measurements. Both cell-normalised calcification (0.01-0.16 pmol C cell-1 d-1) and total CP (< 20 µmol C m-3 d-1) were much lower than those observed in the subpolar North Atlantic where E. huxleyi morphotype A is dominant. However, estimates of coccolith production rates were similar (0.1 1.2 coccoliths cell-1 h-1) to previous measurements made in the subpolar North Atlantic. A multivariate statistical approach found that temperature and irradiance together were best able to explain the observed variation in species distribution and abundance (Spearman's rank correlation p = 0.4, p < 0.01). Rates of calcification per cell and coccolith production, as well as community CP and E. huxleyi abundance, were all positively correlated (p < 0.05) to the strong latitudinal gradient in temperature, irradiance and calcite saturation states across Drake Passage. Broadly, our results lend support to recent suggestions that coccolithophores, especially E. huxleyi, are advancing polewards. However, our in situ observations indicate that this may owe more to sea-surface warming and increasing irradiance rather than ... Dataset Antarc* Antarctic Antarctic Peninsula Drake Passage North Atlantic Ocean acidification Southern Ocean PANGAEA - Data Publisher for Earth & Environmental Science Antarctic Antarctic Peninsula Drake Passage Southern Ocean The Antarctic ENVELOPE(-68.332200,-38.250800,-53.520000,-63.810000)
institution Open Polar
collection PANGAEA - Data Publisher for Earth & Environmental Science
op_collection_id ftpangaea
language English
topic EPOCA
European Project on Ocean Acidification
spellingShingle EPOCA
European Project on Ocean Acidification
Tyrrell, Toby
Charalampopoulou, Anastasia
Coccolithophore size, abundance and calcification across Drake Passage (Southern Ocean), 2009
topic_facet EPOCA
European Project on Ocean Acidification
description Although coccolithophores are not as numerically common or as diverse in the Southern Ocean as they are in subpolar waters of the North Atlantic, a few species, such as Emiliania huxleyi, are found during the summer months. Little is actually known about the calcite production (CP) of these communities or how their distribution and physiology relate to environmental variables in this region. In February 2009, we made observations across Drake Passage (between South America and the Antarctic Peninsula) of coccolithophore distribution, CP, primary production, chlorophyll a and macronutrient concentrations, irradiance and carbonate chemistry. Although CP represented less than 1 % of total carbon fixation, coccolithophores were widespread across Drake Passage. The B/C morphotype of E. huxleyi was the dominant coccolithophore, with low estimates of coccolith calcite (~0.01 pmol C coccolith-1) from biometric measurements. Both cell-normalised calcification (0.01-0.16 pmol C cell-1 d-1) and total CP (< 20 µmol C m-3 d-1) were much lower than those observed in the subpolar North Atlantic where E. huxleyi morphotype A is dominant. However, estimates of coccolith production rates were similar (0.1 1.2 coccoliths cell-1 h-1) to previous measurements made in the subpolar North Atlantic. A multivariate statistical approach found that temperature and irradiance together were best able to explain the observed variation in species distribution and abundance (Spearman's rank correlation p = 0.4, p < 0.01). Rates of calcification per cell and coccolith production, as well as community CP and E. huxleyi abundance, were all positively correlated (p < 0.05) to the strong latitudinal gradient in temperature, irradiance and calcite saturation states across Drake Passage. Broadly, our results lend support to recent suggestions that coccolithophores, especially E. huxleyi, are advancing polewards. However, our in situ observations indicate that this may owe more to sea-surface warming and increasing irradiance rather than ...
format Dataset
author Tyrrell, Toby
Charalampopoulou, Anastasia
author_facet Tyrrell, Toby
Charalampopoulou, Anastasia
author_sort Tyrrell, Toby
title Coccolithophore size, abundance and calcification across Drake Passage (Southern Ocean), 2009
title_short Coccolithophore size, abundance and calcification across Drake Passage (Southern Ocean), 2009
title_full Coccolithophore size, abundance and calcification across Drake Passage (Southern Ocean), 2009
title_fullStr Coccolithophore size, abundance and calcification across Drake Passage (Southern Ocean), 2009
title_full_unstemmed Coccolithophore size, abundance and calcification across Drake Passage (Southern Ocean), 2009
title_sort coccolithophore size, abundance and calcification across drake passage (southern ocean), 2009
publisher PANGAEA
publishDate 2009
url https://doi.pangaea.de/10.1594/PANGAEA.771715
https://doi.org/10.1594/PANGAEA.771715
op_coverage MEDIAN LATITUDE: -58.679299 * MEDIAN LONGITUDE: -59.772582 * SOUTH-BOUND LATITUDE: -63.810000 * WEST-BOUND LONGITUDE: -68.332200 * NORTH-BOUND LATITUDE: -53.520000 * EAST-BOUND LONGITUDE: -38.250800 * DATE/TIME START: 2009-02-06T01:09:00 * DATE/TIME END: 2009-02-26T15:13:00
long_lat ENVELOPE(-68.332200,-38.250800,-53.520000,-63.810000)
geographic Antarctic
Antarctic Peninsula
Drake Passage
Southern Ocean
The Antarctic
geographic_facet Antarctic
Antarctic Peninsula
Drake Passage
Southern Ocean
The Antarctic
genre Antarc*
Antarctic
Antarctic Peninsula
Drake Passage
North Atlantic
Ocean acidification
Southern Ocean
genre_facet Antarc*
Antarctic
Antarctic Peninsula
Drake Passage
North Atlantic
Ocean acidification
Southern Ocean
op_source Supplement to: Charalampopoulou, Anastasia; Poulton, Alex J; Bakker, Dorothee C E; Lucas, Mike I; Stinchcombe, Mark Colin; Tyrrell, Toby (2016): Environmental drivers of coccolithophore abundance and calcification across Drake Passage (Southern Ocean). Biogeosciences, 13(21), 5917-5935, https://doi.org/10.5194/bg-13-5917-2016
op_relation https://doi.pangaea.de/10.1594/PANGAEA.771715
https://doi.org/10.1594/PANGAEA.771715
op_rights CC-BY-3.0: Creative Commons Attribution 3.0 Unported
Access constraints: unrestricted
info:eu-repo/semantics/openAccess
op_rightsnorm CC-BY
op_doi https://doi.org/10.1594/PANGAEA.771715
https://doi.org/10.5194/bg-13-5917-2016
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