Patterns of hydrologic connectivity in the McMurdo Dry Valleys, Antarctica: a synthesis of 20 years of hydrologic data
Abstract Streams in the McMurdo Dry Valleys (MDVs) of Antarctica moderate an important hydrologic and biogeochemical connection between upland alpine glaciers, valley‐bottom soils, and lowland closed‐basin lakes. Moreover, MDV streams are simple but dynamic systems ideal for studying interacting hyd...
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crwiley:10.1002/hyp.10818 2024-06-23T07:47:29+00:00 Patterns of hydrologic connectivity in the McMurdo Dry Valleys, Antarctica: a synthesis of 20 years of hydrologic data Wlostowski, Adam N. Gooseff, Michael N. McKnight, Diane M. Jaros, Christopher Lyons, W. Berry National Science Foundation 2016 http://dx.doi.org/10.1002/hyp.10818 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fhyp.10818 https://onlinelibrary.wiley.com/doi/pdf/10.1002/hyp.10818 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/hyp.10818 https://onlinelibrary.wiley.com/doi/am-pdf/10.1002/hyp.10818 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#am http://onlinelibrary.wiley.com/termsAndConditions#vor Hydrological Processes volume 30, issue 17, page 2958-2975 ISSN 0885-6087 1099-1085 journal-article 2016 crwiley https://doi.org/10.1002/hyp.10818 2024-06-06T04:22:12Z Abstract Streams in the McMurdo Dry Valleys (MDVs) of Antarctica moderate an important hydrologic and biogeochemical connection between upland alpine glaciers, valley‐bottom soils, and lowland closed‐basin lakes. Moreover, MDV streams are simple but dynamic systems ideal for studying interacting hydrologic and ecological dynamics. This work synthesizes 20 years of hydrologic data, collected as part of the MDVs Long‐Term Ecological Research project, to assess spatial and temporal dynamics of hydrologic connectivity between glaciers, streams, and lakes. Long‐term records of stream discharge (Q), specific electrical conductance (EC), and water temperature (T) from 18 streams were analysed in order to quantify the magnitude, duration, and frequency of hydrologic connections over daily, annual, and inter‐annual timescales. At a daily timescale, we observe predictable diurnal variations in Q, EC, and T. At an annual timescale, we observe longer streams to be more intermittent, warmer, and have higher median EC values, compared to shorter streams. Longer streams also behave chemostatically with respect to EC, whereas shorter streams are more strongly characterized by dilution. Inter‐annually, we observe significant variability in annual runoff volumes, likely because of climatic variability over the 20 record years considered. Hydrologic connections at all timescales are vital to stream ecosystem structure and function. This synthesis of hydrologic connectivity in the MDVs provides a useful end‐member template for assessing hydrologic connectivity in more structurally complex temperate watersheds. Copyright © 2016 John Wiley & Sons, Ltd. Article in Journal/Newspaper Antarc* Antarctica McMurdo Dry Valleys Wiley Online Library McMurdo Dry Valleys Hydrological Processes 30 17 2958 2975 |
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Wiley Online Library |
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English |
description |
Abstract Streams in the McMurdo Dry Valleys (MDVs) of Antarctica moderate an important hydrologic and biogeochemical connection between upland alpine glaciers, valley‐bottom soils, and lowland closed‐basin lakes. Moreover, MDV streams are simple but dynamic systems ideal for studying interacting hydrologic and ecological dynamics. This work synthesizes 20 years of hydrologic data, collected as part of the MDVs Long‐Term Ecological Research project, to assess spatial and temporal dynamics of hydrologic connectivity between glaciers, streams, and lakes. Long‐term records of stream discharge (Q), specific electrical conductance (EC), and water temperature (T) from 18 streams were analysed in order to quantify the magnitude, duration, and frequency of hydrologic connections over daily, annual, and inter‐annual timescales. At a daily timescale, we observe predictable diurnal variations in Q, EC, and T. At an annual timescale, we observe longer streams to be more intermittent, warmer, and have higher median EC values, compared to shorter streams. Longer streams also behave chemostatically with respect to EC, whereas shorter streams are more strongly characterized by dilution. Inter‐annually, we observe significant variability in annual runoff volumes, likely because of climatic variability over the 20 record years considered. Hydrologic connections at all timescales are vital to stream ecosystem structure and function. This synthesis of hydrologic connectivity in the MDVs provides a useful end‐member template for assessing hydrologic connectivity in more structurally complex temperate watersheds. Copyright © 2016 John Wiley & Sons, Ltd. |
author2 |
National Science Foundation |
format |
Article in Journal/Newspaper |
author |
Wlostowski, Adam N. Gooseff, Michael N. McKnight, Diane M. Jaros, Christopher Lyons, W. Berry |
spellingShingle |
Wlostowski, Adam N. Gooseff, Michael N. McKnight, Diane M. Jaros, Christopher Lyons, W. Berry Patterns of hydrologic connectivity in the McMurdo Dry Valleys, Antarctica: a synthesis of 20 years of hydrologic data |
author_facet |
Wlostowski, Adam N. Gooseff, Michael N. McKnight, Diane M. Jaros, Christopher Lyons, W. Berry |
author_sort |
Wlostowski, Adam N. |
title |
Patterns of hydrologic connectivity in the McMurdo Dry Valleys, Antarctica: a synthesis of 20 years of hydrologic data |
title_short |
Patterns of hydrologic connectivity in the McMurdo Dry Valleys, Antarctica: a synthesis of 20 years of hydrologic data |
title_full |
Patterns of hydrologic connectivity in the McMurdo Dry Valleys, Antarctica: a synthesis of 20 years of hydrologic data |
title_fullStr |
Patterns of hydrologic connectivity in the McMurdo Dry Valleys, Antarctica: a synthesis of 20 years of hydrologic data |
title_full_unstemmed |
Patterns of hydrologic connectivity in the McMurdo Dry Valleys, Antarctica: a synthesis of 20 years of hydrologic data |
title_sort |
patterns of hydrologic connectivity in the mcmurdo dry valleys, antarctica: a synthesis of 20 years of hydrologic data |
publisher |
Wiley |
publishDate |
2016 |
url |
http://dx.doi.org/10.1002/hyp.10818 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fhyp.10818 https://onlinelibrary.wiley.com/doi/pdf/10.1002/hyp.10818 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/hyp.10818 https://onlinelibrary.wiley.com/doi/am-pdf/10.1002/hyp.10818 |
geographic |
McMurdo Dry Valleys |
geographic_facet |
McMurdo Dry Valleys |
genre |
Antarc* Antarctica McMurdo Dry Valleys |
genre_facet |
Antarc* Antarctica McMurdo Dry Valleys |
op_source |
Hydrological Processes volume 30, issue 17, page 2958-2975 ISSN 0885-6087 1099-1085 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#am http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/hyp.10818 |
container_title |
Hydrological Processes |
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30 |
container_issue |
17 |
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2958 |
op_container_end_page |
2975 |
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1802651596475072512 |