SEA ICE MICROBIAL COMMUNITIES. V. THE VERTICAL ZONATION OF DIATOMS IN AN ANTARCTIC FAST ICE COMMUNITY 1
ABSTRACT A distinct vertical zonation was observed among diatoms in a bottom congelation ice community at McMurdo Sound, Antarctica during the 1981 spring bloom. The bottom 20 cm of ice collected in December from four stations with variable snow cover was subdivided into 5 cm sections for analysis o...
Published in: | Journal of Phycology |
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1985
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Online Access: | http://dx.doi.org/10.1111/j.0022-3646.1985.00401.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.0022-3646.1985.00401.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.0022-3646.1985.00401.x |
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crwiley:10.1111/j.0022-3646.1985.00401.x 2024-06-02T07:57:29+00:00 SEA ICE MICROBIAL COMMUNITIES. V. THE VERTICAL ZONATION OF DIATOMS IN AN ANTARCTIC FAST ICE COMMUNITY 1 Grossi, Sarah McGrath Sullivan, C. W. 1985 http://dx.doi.org/10.1111/j.0022-3646.1985.00401.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.0022-3646.1985.00401.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.0022-3646.1985.00401.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Phycology volume 21, issue 3, page 401-409 ISSN 0022-3646 1529-8817 journal-article 1985 crwiley https://doi.org/10.1111/j.0022-3646.1985.00401.x 2024-05-03T11:45:31Z ABSTRACT A distinct vertical zonation was observed among diatoms in a bottom congelation ice community at McMurdo Sound, Antarctica during the 1981 spring bloom. The bottom 20 cm of ice collected in December from four stations with variable snow cover was subdivided into 5 cm sections for analysis of algal distribution. Algal abundance was inversely related to the depth of snow cover, and generally decreased with increasing distance above the ice‐water interface. Most diatoms, including the dominant species Nitzschia stellata Manguin, Amphiprora kufferathii Manguin and Fragilaria islandica var. adeliae Manguin showed peak abundance in the bottom 10 cm of the ice, where the proportion of living to empty cells was also highest. Two species, however, an Auricula Castracane sp. and Navicula glaciei van Heurck, reached highest concentrations at depths 10–20 cm above the ice‐water interface. We considered two factors as contributing to the observed vertical zonation: (1) successive blooms at the ice‐water interface become spatially stratified within the ice by further accretion below; (2) a differential growth of species occurs along physicochemical gradients within the ice column. A comparison of early versus late season profiles suggests the latter mechanism may prevail once ice accretion has ceased. Article in Journal/Newspaper Antarc* Antarctic Antarctica McMurdo Sound Sea ice Wiley Online Library Antarctic McMurdo Sound Journal of Phycology 21 3 401 409 |
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Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
ABSTRACT A distinct vertical zonation was observed among diatoms in a bottom congelation ice community at McMurdo Sound, Antarctica during the 1981 spring bloom. The bottom 20 cm of ice collected in December from four stations with variable snow cover was subdivided into 5 cm sections for analysis of algal distribution. Algal abundance was inversely related to the depth of snow cover, and generally decreased with increasing distance above the ice‐water interface. Most diatoms, including the dominant species Nitzschia stellata Manguin, Amphiprora kufferathii Manguin and Fragilaria islandica var. adeliae Manguin showed peak abundance in the bottom 10 cm of the ice, where the proportion of living to empty cells was also highest. Two species, however, an Auricula Castracane sp. and Navicula glaciei van Heurck, reached highest concentrations at depths 10–20 cm above the ice‐water interface. We considered two factors as contributing to the observed vertical zonation: (1) successive blooms at the ice‐water interface become spatially stratified within the ice by further accretion below; (2) a differential growth of species occurs along physicochemical gradients within the ice column. A comparison of early versus late season profiles suggests the latter mechanism may prevail once ice accretion has ceased. |
format |
Article in Journal/Newspaper |
author |
Grossi, Sarah McGrath Sullivan, C. W. |
spellingShingle |
Grossi, Sarah McGrath Sullivan, C. W. SEA ICE MICROBIAL COMMUNITIES. V. THE VERTICAL ZONATION OF DIATOMS IN AN ANTARCTIC FAST ICE COMMUNITY 1 |
author_facet |
Grossi, Sarah McGrath Sullivan, C. W. |
author_sort |
Grossi, Sarah McGrath |
title |
SEA ICE MICROBIAL COMMUNITIES. V. THE VERTICAL ZONATION OF DIATOMS IN AN ANTARCTIC FAST ICE COMMUNITY 1 |
title_short |
SEA ICE MICROBIAL COMMUNITIES. V. THE VERTICAL ZONATION OF DIATOMS IN AN ANTARCTIC FAST ICE COMMUNITY 1 |
title_full |
SEA ICE MICROBIAL COMMUNITIES. V. THE VERTICAL ZONATION OF DIATOMS IN AN ANTARCTIC FAST ICE COMMUNITY 1 |
title_fullStr |
SEA ICE MICROBIAL COMMUNITIES. V. THE VERTICAL ZONATION OF DIATOMS IN AN ANTARCTIC FAST ICE COMMUNITY 1 |
title_full_unstemmed |
SEA ICE MICROBIAL COMMUNITIES. V. THE VERTICAL ZONATION OF DIATOMS IN AN ANTARCTIC FAST ICE COMMUNITY 1 |
title_sort |
sea ice microbial communities. v. the vertical zonation of diatoms in an antarctic fast ice community 1 |
publisher |
Wiley |
publishDate |
1985 |
url |
http://dx.doi.org/10.1111/j.0022-3646.1985.00401.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.0022-3646.1985.00401.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.0022-3646.1985.00401.x |
geographic |
Antarctic McMurdo Sound |
geographic_facet |
Antarctic McMurdo Sound |
genre |
Antarc* Antarctic Antarctica McMurdo Sound Sea ice |
genre_facet |
Antarc* Antarctic Antarctica McMurdo Sound Sea ice |
op_source |
Journal of Phycology volume 21, issue 3, page 401-409 ISSN 0022-3646 1529-8817 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.0022-3646.1985.00401.x |
container_title |
Journal of Phycology |
container_volume |
21 |
container_issue |
3 |
container_start_page |
401 |
op_container_end_page |
409 |
_version_ |
1800740647913652224 |