Dominant diatom species in the Canada Basin in summer 2003, a reported serious melting season
ABSTRACT During the second Chinese National Arctic Research Expedition in summer 2003, sea ice cores and the underlying water were sampled from seven stations in the pack ice zone of the Canada Basin and were examined with a phase contrast microscope. A total of 102 and 78 algal species were identif...
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2010
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Online Access: | http://dx.doi.org/10.1017/s0032247410000495 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0032247410000495 |
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crcambridgeupr:10.1017/s0032247410000495 2024-06-23T07:50:13+00:00 Dominant diatom species in the Canada Basin in summer 2003, a reported serious melting season Zheng, Shuxian Wang, Guizhong Zhang, Fang Cai, Minghong He, Jianfeng 2010 http://dx.doi.org/10.1017/s0032247410000495 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0032247410000495 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Polar Record volume 47, issue 3, page 244-261 ISSN 0032-2474 1475-3057 journal-article 2010 crcambridgeupr https://doi.org/10.1017/s0032247410000495 2024-05-29T08:09:30Z ABSTRACT During the second Chinese National Arctic Research Expedition in summer 2003, sea ice cores and the underlying water were sampled from seven stations in the pack ice zone of the Canada Basin and were examined with a phase contrast microscope. A total of 102 and 78 algal species were identified for the ice cores and the underlying water, respectively, ranking in the middle range among the surveys of the Arctic Ocean up to the present despite seasonal variability. The Shannon-Wiener indices ranged from 1.40 to 4.88 with an average of 3.58 ± 0.68. Diatom species, especially pennate species, dominated in all the samples. A large number of algal spores were contained in every layer (abundance percentage > 1%). The microalgal abundances ranged from 1.4 × 10 4 to 8.73 × 10 5 cells L −1 and the biomass ranged from 0.56 to 89.49 μg L −1 . They were correlated with the number of algal species ( P < 0.05) but not with the diversity index ( P > 0.05). Ice algal maxima were observed in various layers (bottom, interior and near the surface of the ice floes). The phytoplankton biomass in the ice-water interface was one order of magnitude lower than that in the bottom ice ( P < 0.05). The species number and the diversity index in water samples, with much less biomass ( P < 0.01), were comparative with the ice samples ( P > 0.05). Spatial heterogeneity in both horizontal and vertical directions was the main characteristic of the algal community structure, which was demonstrated by the cluster analysis result and the distribution patterns. Article in Journal/Newspaper Arctic Arctic Ocean canada basin Phytoplankton Polar Record Sea ice Cambridge University Press Arctic Arctic Ocean Canada Polar Record 47 3 244 261 |
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Open Polar |
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Cambridge University Press |
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English |
description |
ABSTRACT During the second Chinese National Arctic Research Expedition in summer 2003, sea ice cores and the underlying water were sampled from seven stations in the pack ice zone of the Canada Basin and were examined with a phase contrast microscope. A total of 102 and 78 algal species were identified for the ice cores and the underlying water, respectively, ranking in the middle range among the surveys of the Arctic Ocean up to the present despite seasonal variability. The Shannon-Wiener indices ranged from 1.40 to 4.88 with an average of 3.58 ± 0.68. Diatom species, especially pennate species, dominated in all the samples. A large number of algal spores were contained in every layer (abundance percentage > 1%). The microalgal abundances ranged from 1.4 × 10 4 to 8.73 × 10 5 cells L −1 and the biomass ranged from 0.56 to 89.49 μg L −1 . They were correlated with the number of algal species ( P < 0.05) but not with the diversity index ( P > 0.05). Ice algal maxima were observed in various layers (bottom, interior and near the surface of the ice floes). The phytoplankton biomass in the ice-water interface was one order of magnitude lower than that in the bottom ice ( P < 0.05). The species number and the diversity index in water samples, with much less biomass ( P < 0.01), were comparative with the ice samples ( P > 0.05). Spatial heterogeneity in both horizontal and vertical directions was the main characteristic of the algal community structure, which was demonstrated by the cluster analysis result and the distribution patterns. |
format |
Article in Journal/Newspaper |
author |
Zheng, Shuxian Wang, Guizhong Zhang, Fang Cai, Minghong He, Jianfeng |
spellingShingle |
Zheng, Shuxian Wang, Guizhong Zhang, Fang Cai, Minghong He, Jianfeng Dominant diatom species in the Canada Basin in summer 2003, a reported serious melting season |
author_facet |
Zheng, Shuxian Wang, Guizhong Zhang, Fang Cai, Minghong He, Jianfeng |
author_sort |
Zheng, Shuxian |
title |
Dominant diatom species in the Canada Basin in summer 2003, a reported serious melting season |
title_short |
Dominant diatom species in the Canada Basin in summer 2003, a reported serious melting season |
title_full |
Dominant diatom species in the Canada Basin in summer 2003, a reported serious melting season |
title_fullStr |
Dominant diatom species in the Canada Basin in summer 2003, a reported serious melting season |
title_full_unstemmed |
Dominant diatom species in the Canada Basin in summer 2003, a reported serious melting season |
title_sort |
dominant diatom species in the canada basin in summer 2003, a reported serious melting season |
publisher |
Cambridge University Press (CUP) |
publishDate |
2010 |
url |
http://dx.doi.org/10.1017/s0032247410000495 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0032247410000495 |
geographic |
Arctic Arctic Ocean Canada |
geographic_facet |
Arctic Arctic Ocean Canada |
genre |
Arctic Arctic Ocean canada basin Phytoplankton Polar Record Sea ice |
genre_facet |
Arctic Arctic Ocean canada basin Phytoplankton Polar Record Sea ice |
op_source |
Polar Record volume 47, issue 3, page 244-261 ISSN 0032-2474 1475-3057 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0032247410000495 |
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Polar Record |
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47 |
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3 |
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244 |
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261 |
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1802641083177369600 |