High-Resolution Reconstruction of Dissolved Oxygen Levels in the Baltic Sea With Bivalves – a Multi-Species Comparison (Arctica islandica, Astarte borealis, Astarte elliptica)
An increasing area of shallow-marine benthic habitats, specifically in the Baltic Sea, is affected by seasonal oxygen depletion. To place the current spread of oxygen deficiency into context and quantify the contribution of anthropogenic ecosystem perturbation to this development, high-resolution ar...
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2022
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Online Access: | https://doi.org/10.3389/fmars.2022.820731 https://doaj.org/article/91b3a495ec604511b0466ccda2c403d8 |
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ftdoajarticles:oai:doaj.org/article:91b3a495ec604511b0466ccda2c403d8 2023-05-15T15:22:32+02:00 High-Resolution Reconstruction of Dissolved Oxygen Levels in the Baltic Sea With Bivalves – a Multi-Species Comparison (Arctica islandica, Astarte borealis, Astarte elliptica) Bernd R. Schöne Xizhi Huang Anne Jantschke Regina Mertz-Kraus Michael L. Zettler 2022-04-01T00:00:00Z https://doi.org/10.3389/fmars.2022.820731 https://doaj.org/article/91b3a495ec604511b0466ccda2c403d8 EN eng Frontiers Media S.A. https://www.frontiersin.org/articles/10.3389/fmars.2022.820731/full https://doaj.org/toc/2296-7745 2296-7745 doi:10.3389/fmars.2022.820731 https://doaj.org/article/91b3a495ec604511b0466ccda2c403d8 Frontiers in Marine Science, Vol 9 (2022) sclerochronology bivalve mollusk shell hypoxia manganese dissolved oxygen proxy Science Q General. Including nature conservation geographical distribution QH1-199.5 article 2022 ftdoajarticles https://doi.org/10.3389/fmars.2022.820731 2022-12-31T12:00:26Z An increasing area of shallow-marine benthic habitats, specifically in the Baltic Sea, is affected by seasonal oxygen depletion. To place the current spread of oxygen deficiency into context and quantify the contribution of anthropogenic ecosystem perturbation to this development, high-resolution archives for the pre-instrumental era are needed. As recently demonstrated, shells of the bivalve mollusk, Arctica islandica fulfil this task with molar Mn/Cashell ratios as proxies for dissolved oxygen (DO) levels in the water column. Since the ocean quahog is inhomogeneously distributed in the Baltic Sea and may not be present in museum collections or found throughout sedimentary sequences, the present study evaluated whether two other common bivalves, Astarte elliptica and Astarte borealis can be used interchangeably or alternatively as proxy DO recorders. Once mathematically resampled and corrected for shell growth rate-related kinetic effects and (some) vital effects, Mn/Cashell data of all three species (age ten onward in A. islandica) were statistically significantly (p < 0.0001) linearly and inversely correlated to DO concentration in the free water column above seafloor (r = –0.66 to –0.75, corresponding to 43 to 56% explained variability). A. elliptica may provide slightly more precise DO data (1σ error of ±1.5 mL/L) than A. islandica or A. borealis ( ± 1.6 mL/L), but has a shorter lifespan. Both Astarte species show a stronger correlation with DO than A. islandica, because their biomineralization seems to be less severely hampered by oxygen and salinity stress. In turn, A. islandica grows faster resulting in less time-averaged data. During youth, the ocean quahog typically incorporates a disproportionately large amount of manganese into its shell, possibly because food intake occurs directly at the sediment-water interface where Mn-rich porewater diffuses out of the sediment. With increasing age, however, A. islandica seems to generate a gradually stronger inhaling water current and takes in a larger ... Article in Journal/Newspaper Arctica islandica Ocean quahog Directory of Open Access Journals: DOAJ Articles Frontiers in Marine Science 9 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
sclerochronology bivalve mollusk shell hypoxia manganese dissolved oxygen proxy Science Q General. Including nature conservation geographical distribution QH1-199.5 |
spellingShingle |
sclerochronology bivalve mollusk shell hypoxia manganese dissolved oxygen proxy Science Q General. Including nature conservation geographical distribution QH1-199.5 Bernd R. Schöne Xizhi Huang Anne Jantschke Regina Mertz-Kraus Michael L. Zettler High-Resolution Reconstruction of Dissolved Oxygen Levels in the Baltic Sea With Bivalves – a Multi-Species Comparison (Arctica islandica, Astarte borealis, Astarte elliptica) |
topic_facet |
sclerochronology bivalve mollusk shell hypoxia manganese dissolved oxygen proxy Science Q General. Including nature conservation geographical distribution QH1-199.5 |
description |
An increasing area of shallow-marine benthic habitats, specifically in the Baltic Sea, is affected by seasonal oxygen depletion. To place the current spread of oxygen deficiency into context and quantify the contribution of anthropogenic ecosystem perturbation to this development, high-resolution archives for the pre-instrumental era are needed. As recently demonstrated, shells of the bivalve mollusk, Arctica islandica fulfil this task with molar Mn/Cashell ratios as proxies for dissolved oxygen (DO) levels in the water column. Since the ocean quahog is inhomogeneously distributed in the Baltic Sea and may not be present in museum collections or found throughout sedimentary sequences, the present study evaluated whether two other common bivalves, Astarte elliptica and Astarte borealis can be used interchangeably or alternatively as proxy DO recorders. Once mathematically resampled and corrected for shell growth rate-related kinetic effects and (some) vital effects, Mn/Cashell data of all three species (age ten onward in A. islandica) were statistically significantly (p < 0.0001) linearly and inversely correlated to DO concentration in the free water column above seafloor (r = –0.66 to –0.75, corresponding to 43 to 56% explained variability). A. elliptica may provide slightly more precise DO data (1σ error of ±1.5 mL/L) than A. islandica or A. borealis ( ± 1.6 mL/L), but has a shorter lifespan. Both Astarte species show a stronger correlation with DO than A. islandica, because their biomineralization seems to be less severely hampered by oxygen and salinity stress. In turn, A. islandica grows faster resulting in less time-averaged data. During youth, the ocean quahog typically incorporates a disproportionately large amount of manganese into its shell, possibly because food intake occurs directly at the sediment-water interface where Mn-rich porewater diffuses out of the sediment. With increasing age, however, A. islandica seems to generate a gradually stronger inhaling water current and takes in a larger ... |
format |
Article in Journal/Newspaper |
author |
Bernd R. Schöne Xizhi Huang Anne Jantschke Regina Mertz-Kraus Michael L. Zettler |
author_facet |
Bernd R. Schöne Xizhi Huang Anne Jantschke Regina Mertz-Kraus Michael L. Zettler |
author_sort |
Bernd R. Schöne |
title |
High-Resolution Reconstruction of Dissolved Oxygen Levels in the Baltic Sea With Bivalves – a Multi-Species Comparison (Arctica islandica, Astarte borealis, Astarte elliptica) |
title_short |
High-Resolution Reconstruction of Dissolved Oxygen Levels in the Baltic Sea With Bivalves – a Multi-Species Comparison (Arctica islandica, Astarte borealis, Astarte elliptica) |
title_full |
High-Resolution Reconstruction of Dissolved Oxygen Levels in the Baltic Sea With Bivalves – a Multi-Species Comparison (Arctica islandica, Astarte borealis, Astarte elliptica) |
title_fullStr |
High-Resolution Reconstruction of Dissolved Oxygen Levels in the Baltic Sea With Bivalves – a Multi-Species Comparison (Arctica islandica, Astarte borealis, Astarte elliptica) |
title_full_unstemmed |
High-Resolution Reconstruction of Dissolved Oxygen Levels in the Baltic Sea With Bivalves – a Multi-Species Comparison (Arctica islandica, Astarte borealis, Astarte elliptica) |
title_sort |
high-resolution reconstruction of dissolved oxygen levels in the baltic sea with bivalves – a multi-species comparison (arctica islandica, astarte borealis, astarte elliptica) |
publisher |
Frontiers Media S.A. |
publishDate |
2022 |
url |
https://doi.org/10.3389/fmars.2022.820731 https://doaj.org/article/91b3a495ec604511b0466ccda2c403d8 |
genre |
Arctica islandica Ocean quahog |
genre_facet |
Arctica islandica Ocean quahog |
op_source |
Frontiers in Marine Science, Vol 9 (2022) |
op_relation |
https://www.frontiersin.org/articles/10.3389/fmars.2022.820731/full https://doaj.org/toc/2296-7745 2296-7745 doi:10.3389/fmars.2022.820731 https://doaj.org/article/91b3a495ec604511b0466ccda2c403d8 |
op_doi |
https://doi.org/10.3389/fmars.2022.820731 |
container_title |
Frontiers in Marine Science |
container_volume |
9 |
_version_ |
1766353188566335488 |