Hydrological Controls on Ecosystem Dynamics in Lake Fryxell, Antarctica
The McMurdo Dry Valleys constitute the largest ice free area of Antarctica. The area is a polar desert with an annual precipitation of ∼ 3 cm water equivalent, but contains several lakes fed by glacial melt water streams that flow from four to twelve weeks of the year. Over the past ∼20 years, data...
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ftpubmed:oai:pubmedcentral.nih.gov:4956314 2023-05-15T13:40:38+02:00 Hydrological Controls on Ecosystem Dynamics in Lake Fryxell, Antarctica Herbei, Radu Rytel, Alexander L. Lyons, W. Berry McKnight, Diane M. Jaros, Christopher Gooseff, Michael N. Priscu, John C. 2016-07-21 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4956314/ http://www.ncbi.nlm.nih.gov/pubmed/27441705 https://doi.org/10.1371/journal.pone.0159038 en eng Public Library of Science http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4956314/ http://www.ncbi.nlm.nih.gov/pubmed/27441705 http://dx.doi.org/10.1371/journal.pone.0159038 © 2016 Herbei et al http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. CC-BY Research Article Text 2016 ftpubmed https://doi.org/10.1371/journal.pone.0159038 2016-08-14T00:05:54Z The McMurdo Dry Valleys constitute the largest ice free area of Antarctica. The area is a polar desert with an annual precipitation of ∼ 3 cm water equivalent, but contains several lakes fed by glacial melt water streams that flow from four to twelve weeks of the year. Over the past ∼20 years, data have been collected on the lakes located in Taylor Valley, Antarctica as part of the McMurdo Dry Valley Long-Term Ecological Research program (MCM-LTER). This work aims to understand the impact of climate variations on the biological processes in all the ecosystem types within Taylor Valley, including the lakes. These lakes are stratified, closed-basin systems and are perennially covered with ice. Each lake contains a variety of planktonic and benthic algae that require nutrients for photosynthesis and growth. The work presented here focuses on Lake Fryxell, one of the three main lakes of Taylor Valley; it is fed by thirteen melt-water streams. We use a functional regression approach to link the physical, chemical, and biological processes within the stream-lake system to evaluate the input of water and nutrients on the biological processes in the lakes. The technique has been shown previously to provide important insights into these Antarctic lacustrine systems where data acquisition is not temporally coherent. We use data on primary production (PPR) and chlorophyll-A (CHL)from Lake Fryxell as well as discharge observations from two streams flowing into the lake. Our findings show an association between both PPR, CHL and stream input. Text Antarc* Antarctic Antarctica McMurdo Dry Valleys polar desert PubMed Central (PMC) Antarctic Fryxell ENVELOPE(163.183,163.183,-77.617,-77.617) Lake Fryxell ENVELOPE(163.183,163.183,-77.617,-77.617) McMurdo Dry Valleys Taylor Valley ENVELOPE(163.000,163.000,-77.617,-77.617) PLOS ONE 11 7 e0159038 |
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Research Article Herbei, Radu Rytel, Alexander L. Lyons, W. Berry McKnight, Diane M. Jaros, Christopher Gooseff, Michael N. Priscu, John C. Hydrological Controls on Ecosystem Dynamics in Lake Fryxell, Antarctica |
topic_facet |
Research Article |
description |
The McMurdo Dry Valleys constitute the largest ice free area of Antarctica. The area is a polar desert with an annual precipitation of ∼ 3 cm water equivalent, but contains several lakes fed by glacial melt water streams that flow from four to twelve weeks of the year. Over the past ∼20 years, data have been collected on the lakes located in Taylor Valley, Antarctica as part of the McMurdo Dry Valley Long-Term Ecological Research program (MCM-LTER). This work aims to understand the impact of climate variations on the biological processes in all the ecosystem types within Taylor Valley, including the lakes. These lakes are stratified, closed-basin systems and are perennially covered with ice. Each lake contains a variety of planktonic and benthic algae that require nutrients for photosynthesis and growth. The work presented here focuses on Lake Fryxell, one of the three main lakes of Taylor Valley; it is fed by thirteen melt-water streams. We use a functional regression approach to link the physical, chemical, and biological processes within the stream-lake system to evaluate the input of water and nutrients on the biological processes in the lakes. The technique has been shown previously to provide important insights into these Antarctic lacustrine systems where data acquisition is not temporally coherent. We use data on primary production (PPR) and chlorophyll-A (CHL)from Lake Fryxell as well as discharge observations from two streams flowing into the lake. Our findings show an association between both PPR, CHL and stream input. |
format |
Text |
author |
Herbei, Radu Rytel, Alexander L. Lyons, W. Berry McKnight, Diane M. Jaros, Christopher Gooseff, Michael N. Priscu, John C. |
author_facet |
Herbei, Radu Rytel, Alexander L. Lyons, W. Berry McKnight, Diane M. Jaros, Christopher Gooseff, Michael N. Priscu, John C. |
author_sort |
Herbei, Radu |
title |
Hydrological Controls on Ecosystem Dynamics in Lake Fryxell, Antarctica |
title_short |
Hydrological Controls on Ecosystem Dynamics in Lake Fryxell, Antarctica |
title_full |
Hydrological Controls on Ecosystem Dynamics in Lake Fryxell, Antarctica |
title_fullStr |
Hydrological Controls on Ecosystem Dynamics in Lake Fryxell, Antarctica |
title_full_unstemmed |
Hydrological Controls on Ecosystem Dynamics in Lake Fryxell, Antarctica |
title_sort |
hydrological controls on ecosystem dynamics in lake fryxell, antarctica |
publisher |
Public Library of Science |
publishDate |
2016 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4956314/ http://www.ncbi.nlm.nih.gov/pubmed/27441705 https://doi.org/10.1371/journal.pone.0159038 |
long_lat |
ENVELOPE(163.183,163.183,-77.617,-77.617) ENVELOPE(163.183,163.183,-77.617,-77.617) ENVELOPE(163.000,163.000,-77.617,-77.617) |
geographic |
Antarctic Fryxell Lake Fryxell McMurdo Dry Valleys Taylor Valley |
geographic_facet |
Antarctic Fryxell Lake Fryxell McMurdo Dry Valleys Taylor Valley |
genre |
Antarc* Antarctic Antarctica McMurdo Dry Valleys polar desert |
genre_facet |
Antarc* Antarctic Antarctica McMurdo Dry Valleys polar desert |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4956314/ http://www.ncbi.nlm.nih.gov/pubmed/27441705 http://dx.doi.org/10.1371/journal.pone.0159038 |
op_rights |
© 2016 Herbei et al http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1371/journal.pone.0159038 |
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PLOS ONE |
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11 |
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