Summer and winter MgCO3 levels in the skeletons of Arctic bryozoans
In the Arctic, seasonal patterns in seawater biochemical conditions are shaped by physical, chemical, and biological processes related to the alternation of seasons, i.e. winter polar night and summer midnight sun. In summertime, CO 2 concentration is driven by photosynthetic activity of autotrophs...
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Online Access: | https://hdl.handle.net/10037/21295 https://doi.org/10.1016/j.marenvres.2020.105166 |
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ftunivtroemsoe:oai:munin.uit.no:10037/21295 2023-05-15T14:26:08+02:00 Summer and winter MgCO3 levels in the skeletons of Arctic bryozoans Iglikowska, Anna Krzemińska, Małgorzata Renaud, Paul Eric Berge, Jørgen Hop, Haakon Kuklinski, Piotr 2020-10-02 https://hdl.handle.net/10037/21295 https://doi.org/10.1016/j.marenvres.2020.105166 eng eng Elsevier Marine Environmental Research info:eu-repo/grantAgreement/RCN/POLARPROG/226417/Norway/Mare incognitum - ecological processes during the polar night// Iglikowska, Krzemińska, Renaud PE, Berge, Hop, Kuklinski. Summer and winter MgCO3 levels in the skeletons of Arctic bryozoans. Marine Environmental Research. 2020;162 FRIDAID 1864424 doi:10.1016/j.marenvres.2020.105166 0141-1136 1879-0291 https://hdl.handle.net/10037/21295 embargoedAccess Copyright 2020 The Author(s) VDP::Mathematics and natural science: 400::Basic biosciences: 470::Biochemistry: 476 VDP::Matematikk og Naturvitenskap: 400::Basale biofag: 470::Biokjemi: 476 Journal article Tidsskriftartikkel Peer reviewed acceptedVersion 2020 ftunivtroemsoe https://doi.org/10.1016/j.marenvres.2020.105166 2021-06-25T17:58:05Z In the Arctic, seasonal patterns in seawater biochemical conditions are shaped by physical, chemical, and biological processes related to the alternation of seasons, i.e. winter polar night and summer midnight sun. In summertime, CO 2 concentration is driven by photosynthetic activity of autotrophs which raises seawater pH and carbonate saturation state (Ω). In addition, restriction of photosynthetic activity to the euphotic zone and establishment of seasonal stratification often leads to depth gradients in pH and Ω. In winter, however, severely reduced primary production along with respiration processes lead to higher CO 2 concentrations which consequently decrease seawater pH and Ω. Many calcifying invertebrates incorporate other metals, in addition to calcium, into their skeletons, with potential consequences for stability of the mineral matrix and vulnerability to abrasion of predators. We tested whether changes in seawater chemistry due to light-driven activities of marine biota can influence the uptake of Mg into calcified skeletons of Arctic Bryozoa, a dominant faunal group in polar hard-bottom habitats. Our results indicate no clear differences between summer and winter levels of skeletal MgCO 3 in five bryozoan species despite differences in Ω between these two seasons. Furthermore, we could not detect any depth-related differences in MgCO 3 content in skeletons of selected bryozoans. These results may indicate that Arctic bryozoans are able to control MgCO 3 skeletal concentrations biologically. Yet recorded spatial variability in MgCO 3 content in skeletons from stations exhibiting different seawater parameters suggests that environmental factors can also, to some extent, shape the skeletal chemistry of Arctic bryozoans. Article in Journal/Newspaper Arctic Arctic polar night midnight sun University of Tromsø: Munin Open Research Archive Arctic Marine Environmental Research 162 105166 |
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Open Polar |
collection |
University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
topic |
VDP::Mathematics and natural science: 400::Basic biosciences: 470::Biochemistry: 476 VDP::Matematikk og Naturvitenskap: 400::Basale biofag: 470::Biokjemi: 476 |
spellingShingle |
VDP::Mathematics and natural science: 400::Basic biosciences: 470::Biochemistry: 476 VDP::Matematikk og Naturvitenskap: 400::Basale biofag: 470::Biokjemi: 476 Iglikowska, Anna Krzemińska, Małgorzata Renaud, Paul Eric Berge, Jørgen Hop, Haakon Kuklinski, Piotr Summer and winter MgCO3 levels in the skeletons of Arctic bryozoans |
topic_facet |
VDP::Mathematics and natural science: 400::Basic biosciences: 470::Biochemistry: 476 VDP::Matematikk og Naturvitenskap: 400::Basale biofag: 470::Biokjemi: 476 |
description |
In the Arctic, seasonal patterns in seawater biochemical conditions are shaped by physical, chemical, and biological processes related to the alternation of seasons, i.e. winter polar night and summer midnight sun. In summertime, CO 2 concentration is driven by photosynthetic activity of autotrophs which raises seawater pH and carbonate saturation state (Ω). In addition, restriction of photosynthetic activity to the euphotic zone and establishment of seasonal stratification often leads to depth gradients in pH and Ω. In winter, however, severely reduced primary production along with respiration processes lead to higher CO 2 concentrations which consequently decrease seawater pH and Ω. Many calcifying invertebrates incorporate other metals, in addition to calcium, into their skeletons, with potential consequences for stability of the mineral matrix and vulnerability to abrasion of predators. We tested whether changes in seawater chemistry due to light-driven activities of marine biota can influence the uptake of Mg into calcified skeletons of Arctic Bryozoa, a dominant faunal group in polar hard-bottom habitats. Our results indicate no clear differences between summer and winter levels of skeletal MgCO 3 in five bryozoan species despite differences in Ω between these two seasons. Furthermore, we could not detect any depth-related differences in MgCO 3 content in skeletons of selected bryozoans. These results may indicate that Arctic bryozoans are able to control MgCO 3 skeletal concentrations biologically. Yet recorded spatial variability in MgCO 3 content in skeletons from stations exhibiting different seawater parameters suggests that environmental factors can also, to some extent, shape the skeletal chemistry of Arctic bryozoans. |
format |
Article in Journal/Newspaper |
author |
Iglikowska, Anna Krzemińska, Małgorzata Renaud, Paul Eric Berge, Jørgen Hop, Haakon Kuklinski, Piotr |
author_facet |
Iglikowska, Anna Krzemińska, Małgorzata Renaud, Paul Eric Berge, Jørgen Hop, Haakon Kuklinski, Piotr |
author_sort |
Iglikowska, Anna |
title |
Summer and winter MgCO3 levels in the skeletons of Arctic bryozoans |
title_short |
Summer and winter MgCO3 levels in the skeletons of Arctic bryozoans |
title_full |
Summer and winter MgCO3 levels in the skeletons of Arctic bryozoans |
title_fullStr |
Summer and winter MgCO3 levels in the skeletons of Arctic bryozoans |
title_full_unstemmed |
Summer and winter MgCO3 levels in the skeletons of Arctic bryozoans |
title_sort |
summer and winter mgco3 levels in the skeletons of arctic bryozoans |
publisher |
Elsevier |
publishDate |
2020 |
url |
https://hdl.handle.net/10037/21295 https://doi.org/10.1016/j.marenvres.2020.105166 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Arctic polar night midnight sun |
genre_facet |
Arctic Arctic polar night midnight sun |
op_relation |
Marine Environmental Research info:eu-repo/grantAgreement/RCN/POLARPROG/226417/Norway/Mare incognitum - ecological processes during the polar night// Iglikowska, Krzemińska, Renaud PE, Berge, Hop, Kuklinski. Summer and winter MgCO3 levels in the skeletons of Arctic bryozoans. Marine Environmental Research. 2020;162 FRIDAID 1864424 doi:10.1016/j.marenvres.2020.105166 0141-1136 1879-0291 https://hdl.handle.net/10037/21295 |
op_rights |
embargoedAccess Copyright 2020 The Author(s) |
op_doi |
https://doi.org/10.1016/j.marenvres.2020.105166 |
container_title |
Marine Environmental Research |
container_volume |
162 |
container_start_page |
105166 |
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1766298616604917760 |