Data from: Primary production calculations for sea ice from bio-optical observations in the Baltic Sea
Bio-optics is a powerful approach for estimating photosynthesis rates, but has seldom been applied to sea ice, where measuring photosynthesis is a challenge. We measured absorption coefficients of chromophoric dissolved organic matter (CDOM), algae, and non-algal particles along with solar radiation...
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ftdans:oai:easy.dans.knaw.nl:easy-dataset:95061 2023-07-02T03:32:32+02:00 Data from: Primary production calculations for sea ice from bio-optical observations in the Baltic Sea Müller, Susann Vähätalo, Anssi V. Uusikivi, Jari Majaneva, Markus Majaneva, Sanna Autio, Riitta Rintala, Janne-Markus 2016-09-11T20:39:47.000+02:00 http://nbn-resolving.org/urn:nbn:nl:ui:13-vc-el0g https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:95061 unknown doi:10.5061/dryad.7k1gf/1 doi:10.12952/journal.elementa.000121 http://nbn-resolving.org/urn:nbn:nl:ui:13-vc-el0g doi:10.5061/dryad.7k1gf https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:95061 OPEN_ACCESS: The data are archived in Easy, they are accessible elsewhere through the DOI https://dans.knaw.nl/en/about/organisation-and-policy/legal-information/DANSLicence.pdf Life sciences medicine and health care 2016 ftdans https://doi.org/10.5061/dryad.7k1gf/110.12952/journal.elementa.00012110.5061/dryad.7k1gf 2023-06-13T13:23:04Z Bio-optics is a powerful approach for estimating photosynthesis rates, but has seldom been applied to sea ice, where measuring photosynthesis is a challenge. We measured absorption coefficients of chromophoric dissolved organic matter (CDOM), algae, and non-algal particles along with solar radiation, albedo and transmittance at four sea-ice stations in the Gulf of Finland, Baltic Sea. This unique compilation of optical and biological data for Baltic Sea ice was used to build a radiative transfer model describing the light field and the light absorption by algae in 1-cm increments. The maximum quantum yields and photoadaptation of photosynthesis were determined from 14C-incorporation in photosynthetic-irradiance experiments using melted ice. The quantum yields were applied to the radiative transfer model estimating the rate of photosynthesis based on incident solar irradiance measured at 1-min intervals. The calculated depth-integrated mean primary production was 5 mg C m–2 d–1 for the surface layer (0–20 cm ice depth) at Station 3 (fast ice) and 0.5 mg C m–2 d–1 for the bottom layer (20–57 cm ice depth). Additional calculations were performed for typical sea ice in the area in March using all ice types and a typical light spectrum, resulting in depth-integrated mean primary production rates of 34 and 5.6 mg C m–2 d–1 in surface ice and bottom ice, respectively. These calculated rates were compared to rates determined from 14C incorporation experiments with melted ice incubated in situ. The rate of the calculated photosynthesis and the rates measured in situ at Station 3 were lower than those calculated by the bio-optical algorithm for typical conditions in March in the Gulf of Finland by the bio-optical algorithm. Nevertheless, our study shows the applicability of bio-optics for estimating the photosynthesis of sea-ice algae. Other/Unknown Material ice algae Sea ice Data Archiving and Networked Services (DANS): EASY (KNAW - Koninklijke Nederlandse Akademie van Wetenschappen) |
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Open Polar |
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Data Archiving and Networked Services (DANS): EASY (KNAW - Koninklijke Nederlandse Akademie van Wetenschappen) |
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Life sciences medicine and health care |
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Life sciences medicine and health care Müller, Susann Vähätalo, Anssi V. Uusikivi, Jari Majaneva, Markus Majaneva, Sanna Autio, Riitta Rintala, Janne-Markus Data from: Primary production calculations for sea ice from bio-optical observations in the Baltic Sea |
topic_facet |
Life sciences medicine and health care |
description |
Bio-optics is a powerful approach for estimating photosynthesis rates, but has seldom been applied to sea ice, where measuring photosynthesis is a challenge. We measured absorption coefficients of chromophoric dissolved organic matter (CDOM), algae, and non-algal particles along with solar radiation, albedo and transmittance at four sea-ice stations in the Gulf of Finland, Baltic Sea. This unique compilation of optical and biological data for Baltic Sea ice was used to build a radiative transfer model describing the light field and the light absorption by algae in 1-cm increments. The maximum quantum yields and photoadaptation of photosynthesis were determined from 14C-incorporation in photosynthetic-irradiance experiments using melted ice. The quantum yields were applied to the radiative transfer model estimating the rate of photosynthesis based on incident solar irradiance measured at 1-min intervals. The calculated depth-integrated mean primary production was 5 mg C m–2 d–1 for the surface layer (0–20 cm ice depth) at Station 3 (fast ice) and 0.5 mg C m–2 d–1 for the bottom layer (20–57 cm ice depth). Additional calculations were performed for typical sea ice in the area in March using all ice types and a typical light spectrum, resulting in depth-integrated mean primary production rates of 34 and 5.6 mg C m–2 d–1 in surface ice and bottom ice, respectively. These calculated rates were compared to rates determined from 14C incorporation experiments with melted ice incubated in situ. The rate of the calculated photosynthesis and the rates measured in situ at Station 3 were lower than those calculated by the bio-optical algorithm for typical conditions in March in the Gulf of Finland by the bio-optical algorithm. Nevertheless, our study shows the applicability of bio-optics for estimating the photosynthesis of sea-ice algae. |
author |
Müller, Susann Vähätalo, Anssi V. Uusikivi, Jari Majaneva, Markus Majaneva, Sanna Autio, Riitta Rintala, Janne-Markus |
author_facet |
Müller, Susann Vähätalo, Anssi V. Uusikivi, Jari Majaneva, Markus Majaneva, Sanna Autio, Riitta Rintala, Janne-Markus |
author_sort |
Müller, Susann |
title |
Data from: Primary production calculations for sea ice from bio-optical observations in the Baltic Sea |
title_short |
Data from: Primary production calculations for sea ice from bio-optical observations in the Baltic Sea |
title_full |
Data from: Primary production calculations for sea ice from bio-optical observations in the Baltic Sea |
title_fullStr |
Data from: Primary production calculations for sea ice from bio-optical observations in the Baltic Sea |
title_full_unstemmed |
Data from: Primary production calculations for sea ice from bio-optical observations in the Baltic Sea |
title_sort |
data from: primary production calculations for sea ice from bio-optical observations in the baltic sea |
publishDate |
2016 |
url |
http://nbn-resolving.org/urn:nbn:nl:ui:13-vc-el0g https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:95061 |
genre |
ice algae Sea ice |
genre_facet |
ice algae Sea ice |
op_relation |
doi:10.5061/dryad.7k1gf/1 doi:10.12952/journal.elementa.000121 http://nbn-resolving.org/urn:nbn:nl:ui:13-vc-el0g doi:10.5061/dryad.7k1gf https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:95061 |
op_rights |
OPEN_ACCESS: The data are archived in Easy, they are accessible elsewhere through the DOI https://dans.knaw.nl/en/about/organisation-and-policy/legal-information/DANSLicence.pdf |
op_doi |
https://doi.org/10.5061/dryad.7k1gf/110.12952/journal.elementa.00012110.5061/dryad.7k1gf |
_version_ |
1770272139671240704 |