The biogeochemistry of Si in the McMurdo Dry Valley lakes, Antarctica
The biogeochemical dynamics of Si in temperate lakes is well documented and the role of biological uptake and recycling is well known. In this paper we examine the Si dynamics of a series of ice-covered, closed-basin lakes in the McMurdo Dry Valley region (~78° S) of Antarctica. Our data and calcula...
Published in: | International Journal of Astrobiology |
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crcambridgeupr:10.1017/s1473550403001332 2023-06-11T04:05:59+02:00 The biogeochemistry of Si in the McMurdo Dry Valley lakes, Antarctica Pugh, Heather E. Welch, Kathleen A. Lyons, W. Berry Priscu, John C. McKnight, Diane M. 2002 http://dx.doi.org/10.1017/s1473550403001332 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S1473550403001332 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms International Journal of Astrobiology volume 1, issue 4, page 401-413 ISSN 1473-5504 1475-3006 Earth and Planetary Sciences (miscellaneous) Space and Planetary Science Physics and Astronomy (miscellaneous) Ecology, Evolution, Behavior and Systematics journal-article 2002 crcambridgeupr https://doi.org/10.1017/s1473550403001332 2023-05-01T18:21:29Z The biogeochemical dynamics of Si in temperate lakes is well documented and the role of biological uptake and recycling is well known. In this paper we examine the Si dynamics of a series of ice-covered, closed-basin lakes in the McMurdo Dry Valley region (~78° S) of Antarctica. Our data and calculations indicate that biological uptake of Si is not a major process in these lakes. Mass balance considerations in Lake Hoare, the youngest and the freshest lake, suggest that annual stream input during relatively low-flow years is minor and that Si dynamics is greatly influenced by hydrological variation and hence climatic changes affecting stream flow and lake level. The data imply that the Si input during high-flow years must dominate the system. Subtle changes in climate have a major control on Si input into the lake, and Si dynamics are not controlled by biogeochemical processes as in temperate systems. Article in Journal/Newspaper Antarc* Antarctica Cambridge University Press (via Crossref) Hoare ENVELOPE(162.850,162.850,-77.633,-77.633) Lake Hoare ENVELOPE(162.850,162.850,-77.633,-77.633) International Journal of Astrobiology 1 4 401 413 |
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Open Polar |
collection |
Cambridge University Press (via Crossref) |
op_collection_id |
crcambridgeupr |
language |
English |
topic |
Earth and Planetary Sciences (miscellaneous) Space and Planetary Science Physics and Astronomy (miscellaneous) Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Earth and Planetary Sciences (miscellaneous) Space and Planetary Science Physics and Astronomy (miscellaneous) Ecology, Evolution, Behavior and Systematics Pugh, Heather E. Welch, Kathleen A. Lyons, W. Berry Priscu, John C. McKnight, Diane M. The biogeochemistry of Si in the McMurdo Dry Valley lakes, Antarctica |
topic_facet |
Earth and Planetary Sciences (miscellaneous) Space and Planetary Science Physics and Astronomy (miscellaneous) Ecology, Evolution, Behavior and Systematics |
description |
The biogeochemical dynamics of Si in temperate lakes is well documented and the role of biological uptake and recycling is well known. In this paper we examine the Si dynamics of a series of ice-covered, closed-basin lakes in the McMurdo Dry Valley region (~78° S) of Antarctica. Our data and calculations indicate that biological uptake of Si is not a major process in these lakes. Mass balance considerations in Lake Hoare, the youngest and the freshest lake, suggest that annual stream input during relatively low-flow years is minor and that Si dynamics is greatly influenced by hydrological variation and hence climatic changes affecting stream flow and lake level. The data imply that the Si input during high-flow years must dominate the system. Subtle changes in climate have a major control on Si input into the lake, and Si dynamics are not controlled by biogeochemical processes as in temperate systems. |
format |
Article in Journal/Newspaper |
author |
Pugh, Heather E. Welch, Kathleen A. Lyons, W. Berry Priscu, John C. McKnight, Diane M. |
author_facet |
Pugh, Heather E. Welch, Kathleen A. Lyons, W. Berry Priscu, John C. McKnight, Diane M. |
author_sort |
Pugh, Heather E. |
title |
The biogeochemistry of Si in the McMurdo Dry Valley lakes, Antarctica |
title_short |
The biogeochemistry of Si in the McMurdo Dry Valley lakes, Antarctica |
title_full |
The biogeochemistry of Si in the McMurdo Dry Valley lakes, Antarctica |
title_fullStr |
The biogeochemistry of Si in the McMurdo Dry Valley lakes, Antarctica |
title_full_unstemmed |
The biogeochemistry of Si in the McMurdo Dry Valley lakes, Antarctica |
title_sort |
biogeochemistry of si in the mcmurdo dry valley lakes, antarctica |
publisher |
Cambridge University Press (CUP) |
publishDate |
2002 |
url |
http://dx.doi.org/10.1017/s1473550403001332 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S1473550403001332 |
long_lat |
ENVELOPE(162.850,162.850,-77.633,-77.633) ENVELOPE(162.850,162.850,-77.633,-77.633) |
geographic |
Hoare Lake Hoare |
geographic_facet |
Hoare Lake Hoare |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_source |
International Journal of Astrobiology volume 1, issue 4, page 401-413 ISSN 1473-5504 1475-3006 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s1473550403001332 |
container_title |
International Journal of Astrobiology |
container_volume |
1 |
container_issue |
4 |
container_start_page |
401 |
op_container_end_page |
413 |
_version_ |
1768377697590837248 |