Pub Date : 2025-05-07eCollection Date: 2025-01-01DOI: 10.1080/15230430.2025.2483474
Christopher D Stringer, Jonathan L Carrivick, Duncan J Quincey, Daniel Nývlt, Alexis Comber
Land cover information is essential for understanding Earth surface processes and ecosystems. Here, we use K-means clustering to classify Landsat 8 Operational Land Imager (OLI) images covering six proglacial sites of sub-Antarctic islands, the Antarctic Peninsula, and the McMurdo Dry Valleys at 30-m resolution. We quantify spatial patterns of water, bedrock, vegetation, and sediments to an accuracy of 77 percent. Vegetation is most abundant on South Georgia (7 percent of the proglacial area) and the South Shetland Islands (1 to 2 percent). Furthermore, we use change vector analysis (CVA) to discriminate landcover change in the twenty-first century. A latitudinal pattern is evident in ice loss and proglacial landscape change; for example, loss of ice on South Georgia and proglacial landcover change is two orders of magnitude greater than in the McMurdo Dry Valleys. Four of the studied sites had similar landscape stability (64 to 68 percent unchanged), with Alexander Island an exception (50 percent change) due to recent enhanced glacier melt. Overall, we show how landcover of proglacial regions of the climaticallysensitive sub-Antarctic and Antarctica has changed since 2000, with a CVA accuracy of 80 percent. These findings inform understanding of geomorphological activity and sediment and nutrient fluxes and hence terrestrial and marine ecosystems.
土地覆盖信息对于了解地球表面过程和生态系统至关重要。在这里，我们使用K-means聚类对覆盖亚南极岛屿、南极半岛和麦克默多干谷的6个前冰期地点的Landsat 8 Operational Land Imager （OLI）图像进行分类，分辨率为30 m。我们量化了水、基岩、植被和沉积物的空间格局，精度达到77%。植被最丰富的是南乔治亚岛（占原冰期面积的7%）和南设得兰群岛（占原冰期面积的1%至2%）。此外，我们还利用变化向量分析（CVA）对21世纪的土地覆盖变化进行了判别。冰损和前冰期景观变化具有明显的纬向格局；例如，南乔治亚岛的冰损失和前冰期的土地覆盖变化比麦克默多干谷要大两个数量级。四个研究地点具有相似的景观稳定性（64%至68%不变），亚历山大岛是一个例外（50%变化），由于最近冰川融化加剧。总的来说，我们展示了自2000年以来气候敏感的亚南极和南极洲前冰期地区的土地覆盖是如何变化的，CVA精度为80%。这些发现有助于了解地貌活动、沉积物和养分通量，从而了解陆地和海洋生态系统。
{"title":"Land cover change across the major proglacial regions of the sub-Antarctic islands, Antarctic Peninsula, and McMurdo Dry Valleys, during the 21<sup>st</sup> century.","authors":"Christopher D Stringer, Jonathan L Carrivick, Duncan J Quincey, Daniel Nývlt, Alexis Comber","doi":"10.1080/15230430.2025.2483474","DOIUrl":"10.1080/15230430.2025.2483474","url":null,"abstract":"<p><p>Land cover information is essential for understanding Earth surface processes and ecosystems. Here, we use <i>K</i>-means clustering to classify Landsat 8 Operational Land Imager (OLI) images covering six proglacial sites of sub-Antarctic islands, the Antarctic Peninsula, and the McMurdo Dry Valleys at 30-m resolution. We quantify spatial patterns of water, bedrock, vegetation, and sediments to an accuracy of 77 percent. Vegetation is most abundant on South Georgia (7 percent of the proglacial area) and the South Shetland Islands (1 to 2 percent). Furthermore, we use change vector analysis (CVA) to discriminate landcover change in the twenty-first century. A latitudinal pattern is evident in ice loss and proglacial landscape change; for example, loss of ice on South Georgia and proglacial landcover change is two orders of magnitude greater than in the McMurdo Dry Valleys. Four of the studied sites had similar landscape stability (64 to 68 percent unchanged), with Alexander Island an exception (50 percent change) due to recent enhanced glacier melt. Overall, we show how landcover of proglacial regions of the climaticallysensitive sub-Antarctic and Antarctica has changed since 2000, with a CVA accuracy of 80 percent. These findings inform understanding of geomorphological activity and sediment and nutrient fluxes and hence terrestrial and marine ecosystems.</p>","PeriodicalId":8391,"journal":{"name":"Arctic, Antarctic, and Alpine Research","volume":"57 1","pages":"2483474"},"PeriodicalIF":2.0,"publicationDate":"2025-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12311964/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144759019","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-09-04DOI: 10.1080/15230430.2024.2390771
Vicente Marcano, Rafael Navarro-González, Christopher P. McKay
We report here on two extensive data sets across the tree line in the Sierra Nevada de Mérida in the Venezuelan Andes. First, we describe the tree distribution with elevation at this site. Second, ...
{"title":"Temperatures and treeline elevation in the Sierra Nevada de Mérida of the Venezuelan Andes","authors":"Vicente Marcano, Rafael Navarro-González, Christopher P. McKay","doi":"10.1080/15230430.2024.2390771","DOIUrl":"https://doi.org/10.1080/15230430.2024.2390771","url":null,"abstract":"We report here on two extensive data sets across the tree line in the Sierra Nevada de Mérida in the Venezuelan Andes. First, we describe the tree distribution with elevation at this site. Second, ...","PeriodicalId":8391,"journal":{"name":"Arctic, Antarctic, and Alpine Research","volume":"11 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142176817","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-08-21DOI: 10.1080/15230430.2024.2379717
Torben Windirsch, Bruce C. Forbes, Jens Strauss
Published in Arctic, Antarctic, and Alpine Research: An Interdisciplinary Journal (Vol. 56, No. 1, 2024)
发表于《北极、南极和高山研究》：跨学科期刊》（第 56 卷，第 1 期，2024 年）
{"title":"Can animal grazing help to reduce permafrost thaw?","authors":"Torben Windirsch, Bruce C. Forbes, Jens Strauss","doi":"10.1080/15230430.2024.2379717","DOIUrl":"https://doi.org/10.1080/15230430.2024.2379717","url":null,"abstract":"Published in Arctic, Antarctic, and Alpine Research: An Interdisciplinary Journal (Vol. 56, No. 1, 2024)","PeriodicalId":8391,"journal":{"name":"Arctic, Antarctic, and Alpine Research","volume":"37 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142176818","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-08-20DOI: 10.1080/15230430.2024.2376992
Madeline E. Patenall, Natasha M. Hannan, Vivian Gao, Homa Kheyrollah Pour, Derek K. Gray
Gravel roads are a common feature in developed areas of Canada’s Arctic. These roads can be a source of calcareous dust that drifts to roadside lakes, causing significant changes in conductivity, c...
{"title":"Do gravel highways affect water quality and invertebrate communities in Arctic lakes?","authors":"Madeline E. Patenall, Natasha M. Hannan, Vivian Gao, Homa Kheyrollah Pour, Derek K. Gray","doi":"10.1080/15230430.2024.2376992","DOIUrl":"https://doi.org/10.1080/15230430.2024.2376992","url":null,"abstract":"Gravel roads are a common feature in developed areas of Canada’s Arctic. These roads can be a source of calcareous dust that drifts to roadside lakes, causing significant changes in conductivity, c...","PeriodicalId":8391,"journal":{"name":"Arctic, Antarctic, and Alpine Research","volume":"8 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142176819","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-08-13DOI: 10.1080/15230430.2024.2380375
Slawomir Kowal, William A. Gough, Kenneth Butler
The spatial variation in seasonal sea ice in Hudson Bay is examined using spatial clustering analyses. For the period 1971 to 2018, a time series of sea-ice breakup and freeze-up dates and ice-free...
{"title":"Spatial clustering of seasonal sea ice of Hudson Bay, Canada, 1971–2018","authors":"Slawomir Kowal, William A. Gough, Kenneth Butler","doi":"10.1080/15230430.2024.2380375","DOIUrl":"https://doi.org/10.1080/15230430.2024.2380375","url":null,"abstract":"The spatial variation in seasonal sea ice in Hudson Bay is examined using spatial clustering analyses. For the period 1971 to 2018, a time series of sea-ice breakup and freeze-up dates and ice-free...","PeriodicalId":8391,"journal":{"name":"Arctic, Antarctic, and Alpine Research","volume":"45 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142176820","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-08-07DOI: 10.1080/15230430.2024.2367632
Merle Apassingok, Marika M. Holland, Brendan P. Kelly, Chelsea W. Koch, Vera Metcalf, Bryan Rookok Jr., John Walsh
Published in Arctic, Antarctic, and Alpine Research: An Interdisciplinary Journal (Vol. 56, No. 1, 2024)
发表于《北极、南极和高山研究》：跨学科期刊》（第 56 卷，第 1 期，2024 年）
{"title":"How does the changing marine environment affect hunters’ access to Pacific walruses?","authors":"Merle Apassingok, Marika M. Holland, Brendan P. Kelly, Chelsea W. Koch, Vera Metcalf, Bryan Rookok Jr., John Walsh","doi":"10.1080/15230430.2024.2367632","DOIUrl":"https://doi.org/10.1080/15230430.2024.2367632","url":null,"abstract":"Published in Arctic, Antarctic, and Alpine Research: An Interdisciplinary Journal (Vol. 56, No. 1, 2024)","PeriodicalId":8391,"journal":{"name":"Arctic, Antarctic, and Alpine Research","volume":"13 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141935410","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-08-06DOI: 10.1080/15230430.2024.2375176
Anna Wright, Cassandra Brooks, Michael Gooseff, Adrian Howkins, Stephen Chignell
The McMurdo Dry Valleys (MDV), Antarctica’s largest ice-free region, hosts unique terrestrial ecosystems, with biodiversity concentrated in the aquatic environments and surrounding soils. Despite b...
{"title":"An analysis of McMurdo Dry Valleys’ lotic habitats within Antarctica’s protected area network and addressing gaps in biodiversity protection","authors":"Anna Wright, Cassandra Brooks, Michael Gooseff, Adrian Howkins, Stephen Chignell","doi":"10.1080/15230430.2024.2375176","DOIUrl":"https://doi.org/10.1080/15230430.2024.2375176","url":null,"abstract":"The McMurdo Dry Valleys (MDV), Antarctica’s largest ice-free region, hosts unique terrestrial ecosystems, with biodiversity concentrated in the aquatic environments and surrounding soils. Despite b...","PeriodicalId":8391,"journal":{"name":"Arctic, Antarctic, and Alpine Research","volume":"2010 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141935413","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-07-30DOI: 10.1080/15230430.2024.2367778
Felix Bernsteiner, Andreas Kellerer-Pirklbauer, Jakob Abermann, Bernhard Hynek
Little is known about the evolution and dynamics of icebergs in alpine lakes. We analyzed the movement and ablation patterns of icebergs at an ice-contact lake at Pasterze Glacier, Austria, using t...
{"title":"Tracking ablation and movement of icebergs with time-lapse photography at an alpine proglacial lake in Austria","authors":"Felix Bernsteiner, Andreas Kellerer-Pirklbauer, Jakob Abermann, Bernhard Hynek","doi":"10.1080/15230430.2024.2367778","DOIUrl":"https://doi.org/10.1080/15230430.2024.2367778","url":null,"abstract":"Little is known about the evolution and dynamics of icebergs in alpine lakes. We analyzed the movement and ablation patterns of icebergs at an ice-contact lake at Pasterze Glacier, Austria, using t...","PeriodicalId":8391,"journal":{"name":"Arctic, Antarctic, and Alpine Research","volume":"77 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141881729","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-07-22DOI: 10.1080/15230430.2024.2373858
Jamal A. N. Shokory, Stuart N. Lane
Glaciers in Afghanistan are crucial elements for water resource and summer river flows. They are also threatened by rapid climate warming. This study presents an up-to-date assessment of ice cover ...
{"title":"Ice cover loss and debris cover evolution in the Afghanistan Hindu Kush Himalaya between 2000 and 2020","authors":"Jamal A. N. Shokory, Stuart N. Lane","doi":"10.1080/15230430.2024.2373858","DOIUrl":"https://doi.org/10.1080/15230430.2024.2373858","url":null,"abstract":"Glaciers in Afghanistan are crucial elements for water resource and summer river flows. They are also threatened by rapid climate warming. This study presents an up-to-date assessment of ice cover ...","PeriodicalId":8391,"journal":{"name":"Arctic, Antarctic, and Alpine Research","volume":"42 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141783378","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-07-22DOI: 10.1080/15230430.2024.2371534
Danhui Xin, Jeffrey M. Hudson, Anthony Sigman-Lowery, Yu-Ping Chin
The interaction between redox-active species and dissolved organic carbon (DOC) is crucial in driving lacustrine benthic microbial processes. In lacustrine porewaters, many redox-active species exi...
{"title":"Distribution and composition of redox-active species and dissolved organic carbon in Arctic lacustrine porewaters","authors":"Danhui Xin, Jeffrey M. Hudson, Anthony Sigman-Lowery, Yu-Ping Chin","doi":"10.1080/15230430.2024.2371534","DOIUrl":"https://doi.org/10.1080/15230430.2024.2371534","url":null,"abstract":"The interaction between redox-active species and dissolved organic carbon (DOC) is crucial in driving lacustrine benthic microbial processes. In lacustrine porewaters, many redox-active species exi...","PeriodicalId":8391,"journal":{"name":"Arctic, Antarctic, and Alpine Research","volume":"42 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141783377","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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