Carbonate chemistry of an in-situ free-ocean CO 2 enrichment experiment (antFOCE) in comparison to short term variation in Antarctic coastal waters
Free-ocean CO 2 enrichment (FOCE) experiments have been deployed in marine ecosystems to manipulate carbonate system conditions to those predicted in future oceans. We investigated whether the pH/carbonate chemistry of extremely cold polar waters can be manipulated in an ecologically relevant way, t...
Published in: | Scientific Reports |
---|---|
Main Authors: | , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Nature Publishing Group
2018
|
Subjects: | |
Online Access: | https://doi.org/10.1038/s41598-018-21029-1 http://www.ncbi.nlm.nih.gov/pubmed/29434330 http://ecite.utas.edu.au/131896 |
id |
ftunivtasecite:oai:ecite.utas.edu.au:131896 |
---|---|
record_format |
openpolar |
spelling |
ftunivtasecite:oai:ecite.utas.edu.au:131896 2023-05-15T13:55:18+02:00 Carbonate chemistry of an in-situ free-ocean CO 2 enrichment experiment (antFOCE) in comparison to short term variation in Antarctic coastal waters Stark, JS Roden, NP Johnstone, GJ Milnes, M Black, JG Whiteside, S Kirkwood, W Newbery, K Stark, S van Ooijen, E Tilbrook, B Peltzer, ET Berry, K Roberts, D 2018 application/pdf https://doi.org/10.1038/s41598-018-21029-1 http://www.ncbi.nlm.nih.gov/pubmed/29434330 http://ecite.utas.edu.au/131896 en eng Nature Publishing Group http://ecite.utas.edu.au/131896/1/131896 - Carbonate chemistry of an in-situ free-ocean CO2.pdf http://dx.doi.org/10.1038/s41598-018-21029-1 Stark, JS and Roden, NP and Johnstone, GJ and Milnes, M and Black, JG and Whiteside, S and Kirkwood, W and Newbery, K and Stark, S and van Ooijen, E and Tilbrook, B and Peltzer, ET and Berry, K and Roberts, D, Carbonate chemistry of an in-situ free-ocean CO 2 enrichment experiment (antFOCE) in comparison to short term variation in Antarctic coastal waters, Scientific Reports, 8, (1) Article 2816. ISSN 2045-2322 (2018) [Refereed Article] http://www.ncbi.nlm.nih.gov/pubmed/29434330 http://ecite.utas.edu.au/131896 Earth Sciences Oceanography Chemical Oceanography Refereed Article PeerReviewed 2018 ftunivtasecite https://doi.org/10.1038/s41598-018-21029-1 2019-12-13T22:29:47Z Free-ocean CO 2 enrichment (FOCE) experiments have been deployed in marine ecosystems to manipulate carbonate system conditions to those predicted in future oceans. We investigated whether the pH/carbonate chemistry of extremely cold polar waters can be manipulated in an ecologically relevant way, to represent conditions under future atmospheric CO 2 levels, in an in-situ FOCE experiment in Antarctica. We examined spatial and temporal variation in local ambient carbonate chemistry at hourly intervals at two sites between December and February and compared these with experimental conditions. We successfully maintained a mean pH offset in acidified benthic chambers of −0.38 (0.07) from ambient for approximately 8 weeks. Local diel and seasonal fluctuations in ambient pH were duplicated in the FOCE system. Large temporal variability in acidified chambers resulted from system stoppages. The mean pH, Ω arag and f CO 2 values in the acidified chambers were 7.688 0.079, 0.62 0.13 and 912 150 atm, respectively. Variation in ambient pH appeared to be mainly driven by salinity and biological production and ranged from 8.019 to 8.192 with significant spatio-temporal variation. This experiment demonstrates the utility of FOCE systems to create conditions expected in future oceans that represent ecologically relevant variation, even under polar conditions. Article in Journal/Newspaper Antarc* Antarctic Antarctica eCite UTAS (University of Tasmania) Antarctic Scientific Reports 8 1 |
institution |
Open Polar |
collection |
eCite UTAS (University of Tasmania) |
op_collection_id |
ftunivtasecite |
language |
English |
topic |
Earth Sciences Oceanography Chemical Oceanography |
spellingShingle |
Earth Sciences Oceanography Chemical Oceanography Stark, JS Roden, NP Johnstone, GJ Milnes, M Black, JG Whiteside, S Kirkwood, W Newbery, K Stark, S van Ooijen, E Tilbrook, B Peltzer, ET Berry, K Roberts, D Carbonate chemistry of an in-situ free-ocean CO 2 enrichment experiment (antFOCE) in comparison to short term variation in Antarctic coastal waters |
topic_facet |
Earth Sciences Oceanography Chemical Oceanography |
description |
Free-ocean CO 2 enrichment (FOCE) experiments have been deployed in marine ecosystems to manipulate carbonate system conditions to those predicted in future oceans. We investigated whether the pH/carbonate chemistry of extremely cold polar waters can be manipulated in an ecologically relevant way, to represent conditions under future atmospheric CO 2 levels, in an in-situ FOCE experiment in Antarctica. We examined spatial and temporal variation in local ambient carbonate chemistry at hourly intervals at two sites between December and February and compared these with experimental conditions. We successfully maintained a mean pH offset in acidified benthic chambers of −0.38 (0.07) from ambient for approximately 8 weeks. Local diel and seasonal fluctuations in ambient pH were duplicated in the FOCE system. Large temporal variability in acidified chambers resulted from system stoppages. The mean pH, Ω arag and f CO 2 values in the acidified chambers were 7.688 0.079, 0.62 0.13 and 912 150 atm, respectively. Variation in ambient pH appeared to be mainly driven by salinity and biological production and ranged from 8.019 to 8.192 with significant spatio-temporal variation. This experiment demonstrates the utility of FOCE systems to create conditions expected in future oceans that represent ecologically relevant variation, even under polar conditions. |
format |
Article in Journal/Newspaper |
author |
Stark, JS Roden, NP Johnstone, GJ Milnes, M Black, JG Whiteside, S Kirkwood, W Newbery, K Stark, S van Ooijen, E Tilbrook, B Peltzer, ET Berry, K Roberts, D |
author_facet |
Stark, JS Roden, NP Johnstone, GJ Milnes, M Black, JG Whiteside, S Kirkwood, W Newbery, K Stark, S van Ooijen, E Tilbrook, B Peltzer, ET Berry, K Roberts, D |
author_sort |
Stark, JS |
title |
Carbonate chemistry of an in-situ free-ocean CO 2 enrichment experiment (antFOCE) in comparison to short term variation in Antarctic coastal waters |
title_short |
Carbonate chemistry of an in-situ free-ocean CO 2 enrichment experiment (antFOCE) in comparison to short term variation in Antarctic coastal waters |
title_full |
Carbonate chemistry of an in-situ free-ocean CO 2 enrichment experiment (antFOCE) in comparison to short term variation in Antarctic coastal waters |
title_fullStr |
Carbonate chemistry of an in-situ free-ocean CO 2 enrichment experiment (antFOCE) in comparison to short term variation in Antarctic coastal waters |
title_full_unstemmed |
Carbonate chemistry of an in-situ free-ocean CO 2 enrichment experiment (antFOCE) in comparison to short term variation in Antarctic coastal waters |
title_sort |
carbonate chemistry of an in-situ free-ocean co 2 enrichment experiment (antfoce) in comparison to short term variation in antarctic coastal waters |
publisher |
Nature Publishing Group |
publishDate |
2018 |
url |
https://doi.org/10.1038/s41598-018-21029-1 http://www.ncbi.nlm.nih.gov/pubmed/29434330 http://ecite.utas.edu.au/131896 |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic Antarctica |
genre_facet |
Antarc* Antarctic Antarctica |
op_relation |
http://ecite.utas.edu.au/131896/1/131896 - Carbonate chemistry of an in-situ free-ocean CO2.pdf http://dx.doi.org/10.1038/s41598-018-21029-1 Stark, JS and Roden, NP and Johnstone, GJ and Milnes, M and Black, JG and Whiteside, S and Kirkwood, W and Newbery, K and Stark, S and van Ooijen, E and Tilbrook, B and Peltzer, ET and Berry, K and Roberts, D, Carbonate chemistry of an in-situ free-ocean CO 2 enrichment experiment (antFOCE) in comparison to short term variation in Antarctic coastal waters, Scientific Reports, 8, (1) Article 2816. ISSN 2045-2322 (2018) [Refereed Article] http://www.ncbi.nlm.nih.gov/pubmed/29434330 http://ecite.utas.edu.au/131896 |
op_doi |
https://doi.org/10.1038/s41598-018-21029-1 |
container_title |
Scientific Reports |
container_volume |
8 |
container_issue |
1 |
_version_ |
1766261702186237952 |