The effect of carbonate chemistry on the sea ice community in the High Arctic
The Arctic Ocean is particularly susceptible to ocean acidification (OA) compared to other oceans, as the cold surface water with relatively low salinity promotes high carbon dioxide (CO2) solubility. Sea-ice microorganisms are a vital part of polar ecosystems, and experience more extreme concentrat...
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dataone:doi:10.18739/A2HT2GC9X 2024-06-03T18:46:35+00:00 The effect of carbonate chemistry on the sea ice community in the High Arctic Anders Torstensson Gordon M. Showalter Shelly Carpenter Jody W. Deming Andrew R. Margolin Walker O. Smith Elizabeth H. Shadwick High Arctic Sea near the North Pole ENVELOPE(10.0,38.0,89.9,82.2) BEGINDATE: 2018-08-05T00:00:00Z ENDDATE: 2018-09-18T00:00:00Z 2021-01-20T00:00:00Z https://doi.org/10.18739/A2HT2GC9X unknown Arctic Data Center Sea ice EPS DOC Bacteria Ocean acidification Dataset 2021 dataone:urn:node:ARCTIC https://doi.org/10.18739/A2HT2GC9X 2024-06-03T18:18:05Z The Arctic Ocean is particularly susceptible to ocean acidification (OA) compared to other oceans, as the cold surface water with relatively low salinity promotes high carbon dioxide (CO2) solubility. Sea-ice microorganisms are a vital part of polar ecosystems, and experience more extreme concentrations of CO2 than their planktonic counterparts, as “impurities”, such as salts and gases, are concentrated in brine channels as seawater freezes. We participated in the Research Vessel/Ice Breaker (RVIB) Oden cruise to the North Pole in late summer, 2018, with the objective to sample High Arctic sea ice biota and the carbonate chemistry of sea ice. RVIB Oden was moored to a large ice floe and established a temporary ice camp to collect ice and atmospheric information. Our sampling included samples from that floe, but also from other areas that were reached using a helicopter. Ice cores were sampled following established best practices (Miller et al., 2015) using a 0.9 m Kovacs ice corer driven by a small electric drill. Cores were removed from the corer, and temperatures were taken using a Amadigit thermistor. All cores were then cut using a stainless-steel saw into 10 centimeter (cm) sections. Ice samples were thawed together with filtered seawater in the dark from 4-10⁰ Celsius (C) for approximately 24 hours before analysis. Subsamples for bacterial counts were fixed with 2% formaldehyde and stored at −20 C until microscopy analysis by DAPI-staining. Samples for pEPS were filtered through 25 millimeter (mm) 0.4 µm nucleopore filters and returned to UW for analysis using the phenol–sulfuric acid assay (DuBois et al. 1956). Filtrate (< 0.2 μm) from Experiments 1 and 3 was collected for analysis of DOC, frozen at −20 C, and analyzed using a Shimadzu TOC-Vcsh DOC analyzer. Samples for inorganic nutrients were frozen at −20 C and analyzed using a QuAAtro autoanalyzer. Additional cores were collected for experimental analysis in a ships cold room, where the carbonate chemistry was altered by immersing core sections in seawater with enhanced DIC levels. All experiments were conducted using Tedlar bags to eliminate atmospheric exchanges of gases. Samples were processed at the end of 10 days as above. Results have been reported in Torstensson et al. (2021). Dataset Arctic Arctic Ocean North Pole Ocean acidification Sea ice Arctic Data Center (via DataONE) Arctic Arctic Ocean North Pole Breaker ENVELOPE(-67.257,-67.257,-67.874,-67.874) DuBois ENVELOPE(-67.166,-67.166,-66.266,-66.266) ENVELOPE(10.0,38.0,89.9,82.2) |
institution |
Open Polar |
collection |
Arctic Data Center (via DataONE) |
op_collection_id |
dataone:urn:node:ARCTIC |
language |
unknown |
topic |
Sea ice EPS DOC Bacteria Ocean acidification |
spellingShingle |
Sea ice EPS DOC Bacteria Ocean acidification Anders Torstensson Gordon M. Showalter Shelly Carpenter Jody W. Deming Andrew R. Margolin Walker O. Smith Elizabeth H. Shadwick The effect of carbonate chemistry on the sea ice community in the High Arctic |
topic_facet |
Sea ice EPS DOC Bacteria Ocean acidification |
description |
The Arctic Ocean is particularly susceptible to ocean acidification (OA) compared to other oceans, as the cold surface water with relatively low salinity promotes high carbon dioxide (CO2) solubility. Sea-ice microorganisms are a vital part of polar ecosystems, and experience more extreme concentrations of CO2 than their planktonic counterparts, as “impurities”, such as salts and gases, are concentrated in brine channels as seawater freezes. We participated in the Research Vessel/Ice Breaker (RVIB) Oden cruise to the North Pole in late summer, 2018, with the objective to sample High Arctic sea ice biota and the carbonate chemistry of sea ice. RVIB Oden was moored to a large ice floe and established a temporary ice camp to collect ice and atmospheric information. Our sampling included samples from that floe, but also from other areas that were reached using a helicopter. Ice cores were sampled following established best practices (Miller et al., 2015) using a 0.9 m Kovacs ice corer driven by a small electric drill. Cores were removed from the corer, and temperatures were taken using a Amadigit thermistor. All cores were then cut using a stainless-steel saw into 10 centimeter (cm) sections. Ice samples were thawed together with filtered seawater in the dark from 4-10⁰ Celsius (C) for approximately 24 hours before analysis. Subsamples for bacterial counts were fixed with 2% formaldehyde and stored at −20 C until microscopy analysis by DAPI-staining. Samples for pEPS were filtered through 25 millimeter (mm) 0.4 µm nucleopore filters and returned to UW for analysis using the phenol–sulfuric acid assay (DuBois et al. 1956). Filtrate (< 0.2 μm) from Experiments 1 and 3 was collected for analysis of DOC, frozen at −20 C, and analyzed using a Shimadzu TOC-Vcsh DOC analyzer. Samples for inorganic nutrients were frozen at −20 C and analyzed using a QuAAtro autoanalyzer. Additional cores were collected for experimental analysis in a ships cold room, where the carbonate chemistry was altered by immersing core sections in seawater with enhanced DIC levels. All experiments were conducted using Tedlar bags to eliminate atmospheric exchanges of gases. Samples were processed at the end of 10 days as above. Results have been reported in Torstensson et al. (2021). |
format |
Dataset |
author |
Anders Torstensson Gordon M. Showalter Shelly Carpenter Jody W. Deming Andrew R. Margolin Walker O. Smith Elizabeth H. Shadwick |
author_facet |
Anders Torstensson Gordon M. Showalter Shelly Carpenter Jody W. Deming Andrew R. Margolin Walker O. Smith Elizabeth H. Shadwick |
author_sort |
Anders Torstensson |
title |
The effect of carbonate chemistry on the sea ice community in the High Arctic |
title_short |
The effect of carbonate chemistry on the sea ice community in the High Arctic |
title_full |
The effect of carbonate chemistry on the sea ice community in the High Arctic |
title_fullStr |
The effect of carbonate chemistry on the sea ice community in the High Arctic |
title_full_unstemmed |
The effect of carbonate chemistry on the sea ice community in the High Arctic |
title_sort |
effect of carbonate chemistry on the sea ice community in the high arctic |
publisher |
Arctic Data Center |
publishDate |
2021 |
url |
https://doi.org/10.18739/A2HT2GC9X |
op_coverage |
High Arctic Sea near the North Pole ENVELOPE(10.0,38.0,89.9,82.2) BEGINDATE: 2018-08-05T00:00:00Z ENDDATE: 2018-09-18T00:00:00Z |
long_lat |
ENVELOPE(-67.257,-67.257,-67.874,-67.874) ENVELOPE(-67.166,-67.166,-66.266,-66.266) ENVELOPE(10.0,38.0,89.9,82.2) |
geographic |
Arctic Arctic Ocean North Pole Breaker DuBois |
geographic_facet |
Arctic Arctic Ocean North Pole Breaker DuBois |
genre |
Arctic Arctic Ocean North Pole Ocean acidification Sea ice |
genre_facet |
Arctic Arctic Ocean North Pole Ocean acidification Sea ice |
op_doi |
https://doi.org/10.18739/A2HT2GC9X |
_version_ |
1800868216920080384 |