Response of Pelagic Calcifiers (Foraminifera, Thecosomata) to Ocean Acidification During Oligotrophic and Simulated Up-Welling Conditions in the Subtropical North Atlantic Off Gran Canaria
Planktonic Foraminifera and thecosome pteropods are major producers of calcite and aragonite in the ocean and play an important role for pelagic carbonate flux. The responses of planktonic foraminifers to ocean acidification (OA) are variable among the species tested and so far do not allow for reli...
Published in: | Frontiers in Marine Science |
---|---|
Main Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Frontiers Media S.A.
2018
|
Subjects: | |
Online Access: | https://doi.org/10.3389/fmars.2018.00379 https://doaj.org/article/6673e73219874efaa3a2c8db33046bf3 |
id |
ftdoajarticles:oai:doaj.org/article:6673e73219874efaa3a2c8db33046bf3 |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:6673e73219874efaa3a2c8db33046bf3 2023-05-15T17:31:23+02:00 Response of Pelagic Calcifiers (Foraminifera, Thecosomata) to Ocean Acidification During Oligotrophic and Simulated Up-Welling Conditions in the Subtropical North Atlantic Off Gran Canaria Silke Lischka Paul Stange Ulf Riebesell 2018-10-01T00:00:00Z https://doi.org/10.3389/fmars.2018.00379 https://doaj.org/article/6673e73219874efaa3a2c8db33046bf3 EN eng Frontiers Media S.A. https://www.frontiersin.org/article/10.3389/fmars.2018.00379/full https://doaj.org/toc/2296-7745 2296-7745 doi:10.3389/fmars.2018.00379 https://doaj.org/article/6673e73219874efaa3a2c8db33046bf3 Frontiers in Marine Science, Vol 5 (2018) ocean acidification pteropods foraminifers mesocosm experiment oligotrophic ocean subtropical Science Q General. Including nature conservation geographical distribution QH1-199.5 article 2018 ftdoajarticles https://doi.org/10.3389/fmars.2018.00379 2022-12-31T16:00:50Z Planktonic Foraminifera and thecosome pteropods are major producers of calcite and aragonite in the ocean and play an important role for pelagic carbonate flux. The responses of planktonic foraminifers to ocean acidification (OA) are variable among the species tested and so far do not allow for reliable conclusion. Thecosome pteropods respond with reduced calcification and shell dissolution to OA and are considered at high risk especially at high latitudes. The present investigation was part of a large-scale in situ mesocosm experiment in the oligotrophic waters of the eastern subtropical North Atlantic. Over 62 days, we measured the abundance and vertical flux of pelagic foraminifers and thecosome pteropods as part of a natural plankton community over a range of OA scenarios. A bloom phase was initiated by the introduction of deep-water collected from approx. 650 m depth simulating a natural up-welling event. Foraminifers occurred throughout the entire experiment in both the water column and the sediment traps. Pteropods were present only in small numbers and disappeared after the first two weeks of the experiment. No significant CO2 related effects were observed for foraminifers, but cumulative sedimentary flux was reduced at the highest CO2 concentrations. This flux reduction was most likely accompanying an observed flux reduction of particulate organic matter (POM) so that less foraminifers were intercepted and transported downward. Article in Journal/Newspaper North Atlantic Ocean acidification Planktonic foraminifera Directory of Open Access Journals: DOAJ Articles Frontiers in Marine Science 5 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
ocean acidification pteropods foraminifers mesocosm experiment oligotrophic ocean subtropical Science Q General. Including nature conservation geographical distribution QH1-199.5 |
spellingShingle |
ocean acidification pteropods foraminifers mesocosm experiment oligotrophic ocean subtropical Science Q General. Including nature conservation geographical distribution QH1-199.5 Silke Lischka Paul Stange Ulf Riebesell Response of Pelagic Calcifiers (Foraminifera, Thecosomata) to Ocean Acidification During Oligotrophic and Simulated Up-Welling Conditions in the Subtropical North Atlantic Off Gran Canaria |
topic_facet |
ocean acidification pteropods foraminifers mesocosm experiment oligotrophic ocean subtropical Science Q General. Including nature conservation geographical distribution QH1-199.5 |
description |
Planktonic Foraminifera and thecosome pteropods are major producers of calcite and aragonite in the ocean and play an important role for pelagic carbonate flux. The responses of planktonic foraminifers to ocean acidification (OA) are variable among the species tested and so far do not allow for reliable conclusion. Thecosome pteropods respond with reduced calcification and shell dissolution to OA and are considered at high risk especially at high latitudes. The present investigation was part of a large-scale in situ mesocosm experiment in the oligotrophic waters of the eastern subtropical North Atlantic. Over 62 days, we measured the abundance and vertical flux of pelagic foraminifers and thecosome pteropods as part of a natural plankton community over a range of OA scenarios. A bloom phase was initiated by the introduction of deep-water collected from approx. 650 m depth simulating a natural up-welling event. Foraminifers occurred throughout the entire experiment in both the water column and the sediment traps. Pteropods were present only in small numbers and disappeared after the first two weeks of the experiment. No significant CO2 related effects were observed for foraminifers, but cumulative sedimentary flux was reduced at the highest CO2 concentrations. This flux reduction was most likely accompanying an observed flux reduction of particulate organic matter (POM) so that less foraminifers were intercepted and transported downward. |
format |
Article in Journal/Newspaper |
author |
Silke Lischka Paul Stange Ulf Riebesell |
author_facet |
Silke Lischka Paul Stange Ulf Riebesell |
author_sort |
Silke Lischka |
title |
Response of Pelagic Calcifiers (Foraminifera, Thecosomata) to Ocean Acidification During Oligotrophic and Simulated Up-Welling Conditions in the Subtropical North Atlantic Off Gran Canaria |
title_short |
Response of Pelagic Calcifiers (Foraminifera, Thecosomata) to Ocean Acidification During Oligotrophic and Simulated Up-Welling Conditions in the Subtropical North Atlantic Off Gran Canaria |
title_full |
Response of Pelagic Calcifiers (Foraminifera, Thecosomata) to Ocean Acidification During Oligotrophic and Simulated Up-Welling Conditions in the Subtropical North Atlantic Off Gran Canaria |
title_fullStr |
Response of Pelagic Calcifiers (Foraminifera, Thecosomata) to Ocean Acidification During Oligotrophic and Simulated Up-Welling Conditions in the Subtropical North Atlantic Off Gran Canaria |
title_full_unstemmed |
Response of Pelagic Calcifiers (Foraminifera, Thecosomata) to Ocean Acidification During Oligotrophic and Simulated Up-Welling Conditions in the Subtropical North Atlantic Off Gran Canaria |
title_sort |
response of pelagic calcifiers (foraminifera, thecosomata) to ocean acidification during oligotrophic and simulated up-welling conditions in the subtropical north atlantic off gran canaria |
publisher |
Frontiers Media S.A. |
publishDate |
2018 |
url |
https://doi.org/10.3389/fmars.2018.00379 https://doaj.org/article/6673e73219874efaa3a2c8db33046bf3 |
genre |
North Atlantic Ocean acidification Planktonic foraminifera |
genre_facet |
North Atlantic Ocean acidification Planktonic foraminifera |
op_source |
Frontiers in Marine Science, Vol 5 (2018) |
op_relation |
https://www.frontiersin.org/article/10.3389/fmars.2018.00379/full https://doaj.org/toc/2296-7745 2296-7745 doi:10.3389/fmars.2018.00379 https://doaj.org/article/6673e73219874efaa3a2c8db33046bf3 |
op_doi |
https://doi.org/10.3389/fmars.2018.00379 |
container_title |
Frontiers in Marine Science |
container_volume |
5 |
_version_ |
1766128917880504320 |