Century-scale trends and seasonality in pH and temperature for shallow zones of the Bering Sea
No records exist to evaluate long-term pH dynamics in high-latitude oceans, which have the greatest probability of rapid acidification from anthropogenic CO 2 emissions. We reconstructed both seasonal variability and anthropogenic change in seawater pH and temperature by using laser ablation high-re...
Published in: | Proceedings of the National Academy of Sciences |
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Language: | English |
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Online Access: | https://doi.org/10.1073/pnas.1419216112 https://researchportal.port.ac.uk/portal/en/publications/centuryscale-trends-and-seasonality-in-ph-and-temperature-for-shallow-zones-of-the-bering-sea(e504e32e-542a-43e5-b63d-cb8e37efb83c).html https://researchportal.port.ac.uk/ws/files/3260146/submitted_version_ATTU.pdf |
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ftunivportsmpubl:oai:researchportal.port.ac.uk:publications/e504e32e-542a-43e5-b63d-cb8e37efb83c 2023-05-15T15:43:50+02:00 Century-scale trends and seasonality in pH and temperature for shallow zones of the Bering Sea Fietzke, Jan Ragazzola, Federica Halfar, Jochen Dietze, Heiner Foster, Laura C. Hansteen, Thor Henrik Eisenhauer, Anton Steneck, Robert S. 2015-03-10 application/pdf https://doi.org/10.1073/pnas.1419216112 https://researchportal.port.ac.uk/portal/en/publications/centuryscale-trends-and-seasonality-in-ph-and-temperature-for-shallow-zones-of-the-bering-sea(e504e32e-542a-43e5-b63d-cb8e37efb83c).html https://researchportal.port.ac.uk/ws/files/3260146/submitted_version_ATTU.pdf eng eng info:eu-repo/semantics/openAccess Fietzke , J , Ragazzola , F , Halfar , J , Dietze , H , Foster , L C , Hansteen , T H , Eisenhauer , A & Steneck , R S 2015 , ' Century-scale trends and seasonality in pH and temperature for shallow zones of the Bering Sea ' Proceedings of the National Academy of Sciences , vol 112 , no. 10 , pp. 2960–2965 . DOI:10.1073/pnas.1419216112 ocean acidification boron isotopes isotope imaging laser ablation ICP–MS crustose algae /dk/atira/pure/core/subjects/biology Biology article 2015 ftunivportsmpubl https://doi.org/10.1073/pnas.1419216112 2017-09-28T19:34:09Z No records exist to evaluate long-term pH dynamics in high-latitude oceans, which have the greatest probability of rapid acidification from anthropogenic CO 2 emissions. We reconstructed both seasonal variability and anthropogenic change in seawater pH and temperature by using laser ablation high-resolution 2D images of stable boron isotopes (δ(11)B) on a long-lived coralline alga that grew continuously through the 20th century. Analyses focused on four multiannual growth segments. We show a long-term decline of 0.08 ± 0.01 pH units between the end of the 19th and 20th century, which is consistent with atmospheric CO 2 records. Additionally, a strong seasonal cycle (∼0.22 pH units) is observed and interpreted as episodic annual pH increases caused by the consumption of CO 2 during strong algal (kelp) growth in spring and summer. The rate of acidification intensifies from -0.006 ± 0.007 pH units per decade (between 1920s and 1960s) to -0.019 ± 0.009 pH units per decade (between 1960s and 1990s), and the episodic pH increases show a continuous shift to earlier times of the year throughout the centennial record. This is indicative of ecosystem shifts in shallow water algal productivity in this high-latitude habitat resulting from warming and acidification. Article in Journal/Newspaper Bering Sea Ocean acidification University of Portsmouth: Portsmouth Research Portal Bering Sea Proceedings of the National Academy of Sciences 112 10 2960 2965 |
institution |
Open Polar |
collection |
University of Portsmouth: Portsmouth Research Portal |
op_collection_id |
ftunivportsmpubl |
language |
English |
topic |
ocean acidification boron isotopes isotope imaging laser ablation ICP–MS crustose algae /dk/atira/pure/core/subjects/biology Biology |
spellingShingle |
ocean acidification boron isotopes isotope imaging laser ablation ICP–MS crustose algae /dk/atira/pure/core/subjects/biology Biology Fietzke, Jan Ragazzola, Federica Halfar, Jochen Dietze, Heiner Foster, Laura C. Hansteen, Thor Henrik Eisenhauer, Anton Steneck, Robert S. Century-scale trends and seasonality in pH and temperature for shallow zones of the Bering Sea |
topic_facet |
ocean acidification boron isotopes isotope imaging laser ablation ICP–MS crustose algae /dk/atira/pure/core/subjects/biology Biology |
description |
No records exist to evaluate long-term pH dynamics in high-latitude oceans, which have the greatest probability of rapid acidification from anthropogenic CO 2 emissions. We reconstructed both seasonal variability and anthropogenic change in seawater pH and temperature by using laser ablation high-resolution 2D images of stable boron isotopes (δ(11)B) on a long-lived coralline alga that grew continuously through the 20th century. Analyses focused on four multiannual growth segments. We show a long-term decline of 0.08 ± 0.01 pH units between the end of the 19th and 20th century, which is consistent with atmospheric CO 2 records. Additionally, a strong seasonal cycle (∼0.22 pH units) is observed and interpreted as episodic annual pH increases caused by the consumption of CO 2 during strong algal (kelp) growth in spring and summer. The rate of acidification intensifies from -0.006 ± 0.007 pH units per decade (between 1920s and 1960s) to -0.019 ± 0.009 pH units per decade (between 1960s and 1990s), and the episodic pH increases show a continuous shift to earlier times of the year throughout the centennial record. This is indicative of ecosystem shifts in shallow water algal productivity in this high-latitude habitat resulting from warming and acidification. |
format |
Article in Journal/Newspaper |
author |
Fietzke, Jan Ragazzola, Federica Halfar, Jochen Dietze, Heiner Foster, Laura C. Hansteen, Thor Henrik Eisenhauer, Anton Steneck, Robert S. |
author_facet |
Fietzke, Jan Ragazzola, Federica Halfar, Jochen Dietze, Heiner Foster, Laura C. Hansteen, Thor Henrik Eisenhauer, Anton Steneck, Robert S. |
author_sort |
Fietzke, Jan |
title |
Century-scale trends and seasonality in pH and temperature for shallow zones of the Bering Sea |
title_short |
Century-scale trends and seasonality in pH and temperature for shallow zones of the Bering Sea |
title_full |
Century-scale trends and seasonality in pH and temperature for shallow zones of the Bering Sea |
title_fullStr |
Century-scale trends and seasonality in pH and temperature for shallow zones of the Bering Sea |
title_full_unstemmed |
Century-scale trends and seasonality in pH and temperature for shallow zones of the Bering Sea |
title_sort |
century-scale trends and seasonality in ph and temperature for shallow zones of the bering sea |
publishDate |
2015 |
url |
https://doi.org/10.1073/pnas.1419216112 https://researchportal.port.ac.uk/portal/en/publications/centuryscale-trends-and-seasonality-in-ph-and-temperature-for-shallow-zones-of-the-bering-sea(e504e32e-542a-43e5-b63d-cb8e37efb83c).html https://researchportal.port.ac.uk/ws/files/3260146/submitted_version_ATTU.pdf |
geographic |
Bering Sea |
geographic_facet |
Bering Sea |
genre |
Bering Sea Ocean acidification |
genre_facet |
Bering Sea Ocean acidification |
op_source |
Fietzke , J , Ragazzola , F , Halfar , J , Dietze , H , Foster , L C , Hansteen , T H , Eisenhauer , A & Steneck , R S 2015 , ' Century-scale trends and seasonality in pH and temperature for shallow zones of the Bering Sea ' Proceedings of the National Academy of Sciences , vol 112 , no. 10 , pp. 2960–2965 . DOI:10.1073/pnas.1419216112 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1073/pnas.1419216112 |
container_title |
Proceedings of the National Academy of Sciences |
container_volume |
112 |
container_issue |
10 |
container_start_page |
2960 |
op_container_end_page |
2965 |
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1766378047143936000 |