In situ primary production in young Antarctic sea ice
An in situ incubation technique used successfully to measure the photosynthetic carbon assimilation of internal algal assemblages within thick multiyear Arctic ice was developed and improved to measure the photosynthetic carbon assimilation within young sea ice only 50 cm thick (Eastern Weddell Sea,...
Main Author: | |
---|---|
Format: | Article in Journal/Newspaper |
Language: | unknown |
Published: |
2002
|
Subjects: | |
Online Access: | https://ueaeprints.uea.ac.uk/id/eprint/33144/ https://doi.org/10.1023/A:1015676022027 |
id |
ftuniveastangl:oai:ueaeprints.uea.ac.uk:33144 |
---|---|
record_format |
openpolar |
spelling |
ftuniveastangl:oai:ueaeprints.uea.ac.uk:33144 2023-06-06T11:46:41+02:00 In situ primary production in young Antarctic sea ice Mock, Thomas 2002 https://ueaeprints.uea.ac.uk/id/eprint/33144/ https://doi.org/10.1023/A:1015676022027 unknown Mock, Thomas (2002) In situ primary production in young Antarctic sea ice. Hydrobiologia, 470 (1/3). pp. 127-132. ISSN 1573-5117 doi:10.1023/A:1015676022027 Article PeerReviewed 2002 ftuniveastangl https://doi.org/10.1023/A:1015676022027 2023-04-13T22:31:36Z An in situ incubation technique used successfully to measure the photosynthetic carbon assimilation of internal algal assemblages within thick multiyear Arctic ice was developed and improved to measure the photosynthetic carbon assimilation within young sea ice only 50 cm thick (Eastern Weddell Sea, Antarctica). The light transmission was improved by the construction of a cylindrical frame instead of using a transparent acrylic-glass barrel. The new device enabled some of the first precise measurements of in situ photosynthetic carbon assimilation in newly formed Antarctic sea ice, which is an important component in the sea ice ecosystem of the Antarctic Ocean. The rates of carbon assimilation of the interior algal assemblage (top to 5 cm from bottom) was 0.25 mg C m-2 d-1 whereas the bottom algal community (lowest 5 cm) attained only 0.02 mg C m-2 d-1. Chl a specific production rates (PChl) for bottom algae (0.020 - 0.056 µg C µg chl a-1 h-1) revealed strong light limitation, whereas the interior algae (PChl = 0.7 - 1.2 µg C µg chl a-1 h-1) were probably more limited by low temperatures (< -5°C) and high brine salinities. Article in Journal/Newspaper Antarc* Antarctic Antarctic Ocean Antarctica Arctic Sea ice Weddell Sea University of East Anglia: UEA Digital Repository Antarctic Antarctic Ocean Arctic The Antarctic Weddell Weddell Sea |
institution |
Open Polar |
collection |
University of East Anglia: UEA Digital Repository |
op_collection_id |
ftuniveastangl |
language |
unknown |
description |
An in situ incubation technique used successfully to measure the photosynthetic carbon assimilation of internal algal assemblages within thick multiyear Arctic ice was developed and improved to measure the photosynthetic carbon assimilation within young sea ice only 50 cm thick (Eastern Weddell Sea, Antarctica). The light transmission was improved by the construction of a cylindrical frame instead of using a transparent acrylic-glass barrel. The new device enabled some of the first precise measurements of in situ photosynthetic carbon assimilation in newly formed Antarctic sea ice, which is an important component in the sea ice ecosystem of the Antarctic Ocean. The rates of carbon assimilation of the interior algal assemblage (top to 5 cm from bottom) was 0.25 mg C m-2 d-1 whereas the bottom algal community (lowest 5 cm) attained only 0.02 mg C m-2 d-1. Chl a specific production rates (PChl) for bottom algae (0.020 - 0.056 µg C µg chl a-1 h-1) revealed strong light limitation, whereas the interior algae (PChl = 0.7 - 1.2 µg C µg chl a-1 h-1) were probably more limited by low temperatures (< -5°C) and high brine salinities. |
format |
Article in Journal/Newspaper |
author |
Mock, Thomas |
spellingShingle |
Mock, Thomas In situ primary production in young Antarctic sea ice |
author_facet |
Mock, Thomas |
author_sort |
Mock, Thomas |
title |
In situ primary production in young Antarctic sea ice |
title_short |
In situ primary production in young Antarctic sea ice |
title_full |
In situ primary production in young Antarctic sea ice |
title_fullStr |
In situ primary production in young Antarctic sea ice |
title_full_unstemmed |
In situ primary production in young Antarctic sea ice |
title_sort |
in situ primary production in young antarctic sea ice |
publishDate |
2002 |
url |
https://ueaeprints.uea.ac.uk/id/eprint/33144/ https://doi.org/10.1023/A:1015676022027 |
geographic |
Antarctic Antarctic Ocean Arctic The Antarctic Weddell Weddell Sea |
geographic_facet |
Antarctic Antarctic Ocean Arctic The Antarctic Weddell Weddell Sea |
genre |
Antarc* Antarctic Antarctic Ocean Antarctica Arctic Sea ice Weddell Sea |
genre_facet |
Antarc* Antarctic Antarctic Ocean Antarctica Arctic Sea ice Weddell Sea |
op_relation |
Mock, Thomas (2002) In situ primary production in young Antarctic sea ice. Hydrobiologia, 470 (1/3). pp. 127-132. ISSN 1573-5117 doi:10.1023/A:1015676022027 |
op_doi |
https://doi.org/10.1023/A:1015676022027 |
_version_ |
1767952084327464960 |