Measuring and modelling functional moat area in perennially ice-covered Lake Fryxell, Antarctica
The perennially ice-covered lakes of the McMurdo Dry Valleys (MDVs), Antarctica, are an important reservoir of liquid water in an arid and largely frozen environment. During the austral summer, the margins of these ice covers melt, forming a “moat” of liquid water and thin ice, allowing exchange bet...
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2024-12-01
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| Series: | Arctic, Antarctic, and Alpine Research |
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| Online Access: | https://www.tandfonline.com/doi/10.1080/15230430.2024.2406626 |
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| author | Michael S. Stone Mark R. Salvatore Hilary A. Dugan Madeline E. Myers Peter T. Doran |
| author_facet | Michael S. Stone Mark R. Salvatore Hilary A. Dugan Madeline E. Myers Peter T. Doran |
| author_sort | Michael S. Stone |
| collection | DOAJ |
| description | The perennially ice-covered lakes of the McMurdo Dry Valleys (MDVs), Antarctica, are an important reservoir of liquid water in an arid and largely frozen environment. During the austral summer, the margins of these ice covers melt, forming a “moat” of liquid water and thin ice, allowing exchange between lake waters and the atmosphere to occur and serving as an interface between lake, soil, and stream ecosystems. The size of these moats varies from year to year. Here, we have established the first published record of moat area changes at MDVs’ Lake Fryxell through time using manual traces of the moat as observed via satellite imagery. We have also tested a semi-automated approach for measuring moat area and found that it consistently underestimated the manual record, which we suspect may be due to the lower spatial resolution of images used in this versus the manual approach. Finally, we developed a predictive model based on readily available climate data, allowing moat area to be predicted beyond the limits of the satellite-based records. We found that functional moat area varies annually, potentially influencing ecosystem processes in the moats. |
| format | Article |
| id | doaj-art-984229f9eeb541af86317c1fba9edf33 |
| institution | Kabale University |
| issn | 1523-0430 1938-4246 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Arctic, Antarctic, and Alpine Research |
| spelling | doaj-art-984229f9eeb541af86317c1fba9edf332025-01-13T14:40:40ZengTaylor & Francis GroupArctic, Antarctic, and Alpine Research1523-04301938-42462024-12-0156110.1080/15230430.2024.2406626Measuring and modelling functional moat area in perennially ice-covered Lake Fryxell, AntarcticaMichael S. Stone0Mark R. Salvatore1Hilary A. Dugan2Madeline E. Myers3Peter T. Doran4Department of Geology & Geophysics, Louisiana State University, Baton Rouge, Louisiana, USADepartment of Astronomy and Planetary Science, Northern Arizona University, Flagstaff, Arizona, USACenter for Limnology, University of Wisconsin–Madison, Madison, Wisconsin, USADepartment of Geography and Planning, Queen’s University, Kingston, Ontario, CanadaDepartment of Geology & Geophysics, Louisiana State University, Baton Rouge, Louisiana, USAThe perennially ice-covered lakes of the McMurdo Dry Valleys (MDVs), Antarctica, are an important reservoir of liquid water in an arid and largely frozen environment. During the austral summer, the margins of these ice covers melt, forming a “moat” of liquid water and thin ice, allowing exchange between lake waters and the atmosphere to occur and serving as an interface between lake, soil, and stream ecosystems. The size of these moats varies from year to year. Here, we have established the first published record of moat area changes at MDVs’ Lake Fryxell through time using manual traces of the moat as observed via satellite imagery. We have also tested a semi-automated approach for measuring moat area and found that it consistently underestimated the manual record, which we suspect may be due to the lower spatial resolution of images used in this versus the manual approach. Finally, we developed a predictive model based on readily available climate data, allowing moat area to be predicted beyond the limits of the satellite-based records. We found that functional moat area varies annually, potentially influencing ecosystem processes in the moats.https://www.tandfonline.com/doi/10.1080/15230430.2024.2406626McMurdo Dry ValleysLake FryxellmoatNDWIpredictive modellake ice |
| spellingShingle | Michael S. Stone Mark R. Salvatore Hilary A. Dugan Madeline E. Myers Peter T. Doran Measuring and modelling functional moat area in perennially ice-covered Lake Fryxell, Antarctica Arctic, Antarctic, and Alpine Research McMurdo Dry Valleys Lake Fryxell moat NDWI predictive model lake ice |
| title | Measuring and modelling functional moat area in perennially ice-covered Lake Fryxell, Antarctica |
| title_full | Measuring and modelling functional moat area in perennially ice-covered Lake Fryxell, Antarctica |
| title_fullStr | Measuring and modelling functional moat area in perennially ice-covered Lake Fryxell, Antarctica |
| title_full_unstemmed | Measuring and modelling functional moat area in perennially ice-covered Lake Fryxell, Antarctica |
| title_short | Measuring and modelling functional moat area in perennially ice-covered Lake Fryxell, Antarctica |
| title_sort | measuring and modelling functional moat area in perennially ice covered lake fryxell antarctica |
| topic | McMurdo Dry Valleys Lake Fryxell moat NDWI predictive model lake ice |
| url | https://www.tandfonline.com/doi/10.1080/15230430.2024.2406626 |
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