The altitudinal distribution of snow algae on an Alaska glacier (Gulkana Glacier in the Alaska Range)
Abstract The altitudinal distribution of a snow algal community was investigated on an Alaska glacier (Gulkana Glacier in the Alaska Range) from 1270 to 1770 m a.s.l.. Seven species of snow and ice algae (Chlorophyta and cyanobacteria) were observed on the glacier surface. These species were Chlamyd...
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crwiley:10.1002/hyp.1040 2024-09-15T17:35:37+00:00 The altitudinal distribution of snow algae on an Alaska glacier (Gulkana Glacier in the Alaska Range) Takeuchi, Nozomu 2001 http://dx.doi.org/10.1002/hyp.1040 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fhyp.1040 https://onlinelibrary.wiley.com/doi/pdf/10.1002/hyp.1040 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Hydrological Processes volume 15, issue 18, page 3447-3459 ISSN 0885-6087 1099-1085 journal-article 2001 crwiley https://doi.org/10.1002/hyp.1040 2024-08-27T04:31:42Z Abstract The altitudinal distribution of a snow algal community was investigated on an Alaska glacier (Gulkana Glacier in the Alaska Range) from 1270 to 1770 m a.s.l.. Seven species of snow and ice algae (Chlorophyta and cyanobacteria) were observed on the glacier surface. These species were Chlamydomonas nivalis , Mesotaenium berggrenii , Ancylonema nordenskioldii , Cylindrocystis brébissonii , Raphidonema sp., and two Oscillatoriaceae cyanobacteria. The altitudinal distribution of snow algae was different among the species: Cd. nivalis was distributed on the middle to upper area, M. berggrenii A. nordenskioldii , and one Oscillatoriaceae cyanobacterium on the middle to lower area; Raphidonema sp. on the middle area; and Cyl. brébissonii and one Oscillatoriaceae cyanobacterium on the lower area. The total cell concentration and the cell volume biomass of the snow algae ranged from 4·4 × 10 3 to 9·9 × 10 5 cells ml −1 and from 33 to 2211 µl m −2 respectively. The cell volume biomass changed with altitude; the biomass increased with altitude below 1600 m a.s.l., and decreased above 1600 m a.s.l. The community structure showed that A. nordenskioldii dominated on the lower part of the glacier, and that Cd. nivalis dominated on the upper part. The species diversity was relatively high at the lowest and middle sites. The pH was 4·7 to 5·3 for snow and 4·9 to 5·7 for ice on the glacier. The altitudinal distribution of snow algae is discussed in terms of the physical and chemical condition of the glacier surface, and is compared with that on a Himalayan glacier. A larger biomass in the snow area on the Alaska glacier than that of the Himalayan glacier is likely due to less frequent snow cover in summer in Alaska. Small amounts of filamentous cyanobacteria on the Alaska glacier may allow washouts of unicellular green algae by running melt water and may cause a different pattern of altitudinal distribution of algal biomass on the ice area from the Himalayan glacier. Copyright © 2001 John Wiley & Sons, Ltd. Article in Journal/Newspaper alaska range glacier ice algae Alaska Wiley Online Library Hydrological Processes 15 18 3447 3459 |
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Wiley Online Library |
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English |
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Abstract The altitudinal distribution of a snow algal community was investigated on an Alaska glacier (Gulkana Glacier in the Alaska Range) from 1270 to 1770 m a.s.l.. Seven species of snow and ice algae (Chlorophyta and cyanobacteria) were observed on the glacier surface. These species were Chlamydomonas nivalis , Mesotaenium berggrenii , Ancylonema nordenskioldii , Cylindrocystis brébissonii , Raphidonema sp., and two Oscillatoriaceae cyanobacteria. The altitudinal distribution of snow algae was different among the species: Cd. nivalis was distributed on the middle to upper area, M. berggrenii A. nordenskioldii , and one Oscillatoriaceae cyanobacterium on the middle to lower area; Raphidonema sp. on the middle area; and Cyl. brébissonii and one Oscillatoriaceae cyanobacterium on the lower area. The total cell concentration and the cell volume biomass of the snow algae ranged from 4·4 × 10 3 to 9·9 × 10 5 cells ml −1 and from 33 to 2211 µl m −2 respectively. The cell volume biomass changed with altitude; the biomass increased with altitude below 1600 m a.s.l., and decreased above 1600 m a.s.l. The community structure showed that A. nordenskioldii dominated on the lower part of the glacier, and that Cd. nivalis dominated on the upper part. The species diversity was relatively high at the lowest and middle sites. The pH was 4·7 to 5·3 for snow and 4·9 to 5·7 for ice on the glacier. The altitudinal distribution of snow algae is discussed in terms of the physical and chemical condition of the glacier surface, and is compared with that on a Himalayan glacier. A larger biomass in the snow area on the Alaska glacier than that of the Himalayan glacier is likely due to less frequent snow cover in summer in Alaska. Small amounts of filamentous cyanobacteria on the Alaska glacier may allow washouts of unicellular green algae by running melt water and may cause a different pattern of altitudinal distribution of algal biomass on the ice area from the Himalayan glacier. Copyright © 2001 John Wiley & Sons, Ltd. |
format |
Article in Journal/Newspaper |
author |
Takeuchi, Nozomu |
spellingShingle |
Takeuchi, Nozomu The altitudinal distribution of snow algae on an Alaska glacier (Gulkana Glacier in the Alaska Range) |
author_facet |
Takeuchi, Nozomu |
author_sort |
Takeuchi, Nozomu |
title |
The altitudinal distribution of snow algae on an Alaska glacier (Gulkana Glacier in the Alaska Range) |
title_short |
The altitudinal distribution of snow algae on an Alaska glacier (Gulkana Glacier in the Alaska Range) |
title_full |
The altitudinal distribution of snow algae on an Alaska glacier (Gulkana Glacier in the Alaska Range) |
title_fullStr |
The altitudinal distribution of snow algae on an Alaska glacier (Gulkana Glacier in the Alaska Range) |
title_full_unstemmed |
The altitudinal distribution of snow algae on an Alaska glacier (Gulkana Glacier in the Alaska Range) |
title_sort |
altitudinal distribution of snow algae on an alaska glacier (gulkana glacier in the alaska range) |
publisher |
Wiley |
publishDate |
2001 |
url |
http://dx.doi.org/10.1002/hyp.1040 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fhyp.1040 https://onlinelibrary.wiley.com/doi/pdf/10.1002/hyp.1040 |
genre |
alaska range glacier ice algae Alaska |
genre_facet |
alaska range glacier ice algae Alaska |
op_source |
Hydrological Processes volume 15, issue 18, page 3447-3459 ISSN 0885-6087 1099-1085 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/hyp.1040 |
container_title |
Hydrological Processes |
container_volume |
15 |
container_issue |
18 |
container_start_page |
3447 |
op_container_end_page |
3459 |
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1810469470278254592 |