{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,25]],"date-time":"2026-02-25T07:00:33Z","timestamp":1772002833687,"version":"3.50.1"},"reference-count":84,"publisher":"MDPI AG","issue":"23","license":[{"start":{"date-parts":[[2021,11,30]],"date-time":"2021-11-30T00:00:00Z","timestamp":1638230400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/100000001","name":"National Science Foundation","doi-asserted-by":"publisher","award":["OPP-1850578, OPP-2114051, OIA-1929170"],"award-info":[{"award-number":["OPP-1850578, OPP-2114051, OIA-1929170"]}],"id":[{"id":"10.13039\/100000001","id-type":"DOI","asserted-by":"publisher"}]},{"name":"NASA Postdoctoral Program for support","award":["N\/A"],"award-info":[{"award-number":["N\/A"]}]},{"name":"NASA New [Early Career] Investigator Program","award":["N\/A"],"award-info":[{"award-number":["N\/A"]}]},{"name":"NASA\u2019s Arctic Boreal Vulnerability Experiment (ABoVE)","award":["N\/A"],"award-info":[{"award-number":["N\/A"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Remote Sensing"],"abstract":"<jats:p>Beavers have established themselves as a key component of low arctic ecosystems over the past several decades. Beavers are widely recognized as ecosystem engineers, but their effects on permafrost-dominated landscapes in the Arctic remain unclear. In this study, we document the occurrence, reconstruct the timing, and highlight the effects of beaver activity on a small creek valley confined by ice-rich permafrost on the Seward Peninsula, Alaska using multi-dimensional remote sensing analysis of satellite (Landsat-8, Sentinel-2, Planet CubeSat, and DigitalGlobe Inc.\/MAXAR) and unmanned aircraft systems (UAS) imagery. Beaver activity along the study reach of Swan Lake Creek appeared between 2006 and 2011 with the construction of three dams. Between 2011 and 2017, beaver dam numbers increased, with the peak occurring in 2017 (n = 9). Between 2017 and 2019, the number of dams decreased (n = 6), while the average length of the dams increased from 20 to 33 m. Between 4 and 20 August 2019, following a nine-day period of record rainfall (&gt;125 mm), the well-established dam system failed, triggering the formation of a beaver-induced permafrost degradation feature. During the decade of beaver occupation between 2011 and 2021, the creek valley widened from 33 to 180 m (~450% increase) and the length of the stream channel network increased from ~0.6 km to more than 1.9 km (220% increase) as a result of beaver engineering and beaver-induced permafrost degradation. Comparing vegetation (NDVI) and snow (NDSI) derived indices from Sentinel-2 time-series data acquired between 2017 and 2021 for the beaver-induced permafrost degradation feature and a nearby unaffected control site, showed that peak growing season NDVI was lowered by 23% and that it extended the length of the snow-cover period by 19 days following the permafrost disturbance. Our analysis of multi-dimensional remote sensing data highlights several unique aspects of beaver engineering impacts on ice-rich permafrost landscapes. Our detailed reconstruction of the beaver-induced permafrost degradation event may also prove useful for identifying degradation of ice-rich permafrost in optical time-series datasets across regional scales. Future field- and remote sensing-based observations of this site, and others like it, will provide valuable information for the NSF-funded Arctic Beaver Observation Network (A-BON) and the third phase of the NASA Arctic-Boreal Vulnerability Experiment (ABoVE) Field Campaign.<\/jats:p>","DOI":"10.3390\/rs13234863","type":"journal-article","created":{"date-parts":[[2021,12,1]],"date-time":"2021-12-01T01:45:02Z","timestamp":1638323102000},"page":"4863","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":14,"title":["Multi-Dimensional Remote Sensing Analysis Documents Beaver-Induced Permafrost Degradation, Seward Peninsula, Alaska"],"prefix":"10.3390","volume":"13","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-1517-4711","authenticated-orcid":false,"given":"Benjamin M.","family":"Jones","sequence":"first","affiliation":[{"name":"Institute of Northern Engineering, University of Alaska Fairbanks, Fairbanks, AK 99775, USA"}]},{"given":"Ken D.","family":"Tape","sequence":"additional","affiliation":[{"name":"Geophysical Institute, University of Alaska Fairbanks, Fairbanks, AK 99775, USA"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4810-5261","authenticated-orcid":false,"given":"Jason A.","family":"Clark","sequence":"additional","affiliation":[{"name":"Geophysical Institute, University of Alaska Fairbanks, Fairbanks, AK 99775, USA"}]},{"given":"Allen C.","family":"Bondurant","sequence":"additional","affiliation":[{"name":"Institute of Northern Engineering, University of Alaska Fairbanks, Fairbanks, AK 99775, USA"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3401-2515","authenticated-orcid":false,"given":"Melissa K.","family":"Ward Jones","sequence":"additional","affiliation":[{"name":"Institute of Northern Engineering, University of Alaska Fairbanks, Fairbanks, AK 99775, USA"}]},{"given":"Benjamin V.","family":"Gaglioti","sequence":"additional","affiliation":[{"name":"Institute of Northern Engineering, University of Alaska Fairbanks, Fairbanks, AK 99775, USA"}]},{"given":"Clayton D.","family":"Elder","sequence":"additional","affiliation":[{"name":"Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA"}]},{"given":"Chandi","family":"Witharana","sequence":"additional","affiliation":[{"name":"Department of Natural Resources and the Environment, University of Connecticut, Storrs, CT 06269, USA"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9380-4838","authenticated-orcid":false,"given":"Charles E.","family":"Miller","sequence":"additional","affiliation":[{"name":"Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA"}]}],"member":"1968","published-online":{"date-parts":[[2021,11,30]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"6974","DOI":"10.1002\/2017GL073395","article-title":"Increasing Frequency and Duration of Arctic Winter Warming Events","volume":"44","author":"Graham","year":"2017","journal-title":"Geophys. Res. Lett."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"1108","DOI":"10.1038\/s41558-020-0892-z","article-title":"Extremes Become Routine in an Emerging New Arctic","volume":"10","author":"Landrum","year":"2020","journal-title":"Nat. Clim. Chang."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"263","DOI":"10.1038\/nclimate3240","article-title":"Towards a Rain-Dominated Arctic","volume":"7","author":"Bintanja","year":"2017","journal-title":"Nat. Clim. Chang."},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"16001","DOI":"10.1038\/s41598-018-34450-3","article-title":"The Impact of Arctic Warming on Increased Rainfall","volume":"8","author":"Bintanja","year":"2018","journal-title":"Sci. Rep."},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"045010","DOI":"10.1088\/1748-9326\/aafc1b","article-title":"Key Indicators of Arctic Climate Change: 1971\u20132017","volume":"14","author":"Box","year":"2019","journal-title":"Environ. Res. Lett."},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"e2021GL094599","DOI":"10.1029\/2021GL094599","article-title":"The Impact of Sea-Ice Loss on Arctic Climate Feedbacks and Their Role for Arctic Amplification","volume":"48","author":"Jenkins","year":"2021","journal-title":"Geophys. Res. Lett."},{"key":"ref_7","doi-asserted-by":"crossref","unstructured":"Lawrence, D.M., Slater, A.G., Tomas, R.A., Holland, M.M., and Deser, C. (2008). Accelerated Arctic Land Warming and Permafrost Degradation during Rapid Sea Ice Loss. Geophys. Res. Lett., 35.","DOI":"10.1029\/2008GL033985"},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"264","DOI":"10.1038\/s41467-018-08240-4","article-title":"Permafrost Is Warming at a Global Scale","volume":"10","author":"Biskaborn","year":"2019","journal-title":"Nat. Commun."},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"4621","DOI":"10.1038\/s41467-020-18479-5","article-title":"Summer Warming Explains Widespread but Not Uniform Greening in the Arctic Tundra Biome","volume":"11","author":"Berner","year":"2020","journal-title":"Nat. Commun."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"673","DOI":"10.1038\/nclimate1858","article-title":"Shifts in Arctic Vegetation and Associated Feedbacks under Climate Change","volume":"3","author":"Pearson","year":"2013","journal-title":"Nat. Clim. Chang."},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"686","DOI":"10.1111\/j.1365-2486.2006.01128.x","article-title":"The Evidence for Shrub Expansion in Northern Alaska and the Pan-Arctic","volume":"12","author":"Tape","year":"2006","journal-title":"Glob. Chang. Biol."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"e01351","DOI":"10.1002\/ecm.1351","article-title":"Eighteen Years of Ecological Monitoring Reveals Multiple Lines of Evidence for Tundra Vegetation Change","volume":"89","author":"Grabowski","year":"2019","journal-title":"Ecol. Monogr."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"650","DOI":"10.1002\/2015JG003133","article-title":"Transitions in Arctic Ecosystems: Ecological Implications of a Changing Hydrological Regime","volume":"121","author":"Wrona","year":"2016","journal-title":"J. Geophys. Res. Biogeosciences"},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"212","DOI":"10.1016\/j.earscirev.2019.02.018","article-title":"Effects of Changing Permafrost Conditions on Hydrological Processes and Fluvial Fluxes","volume":"191","author":"Lamoureux","year":"2019","journal-title":"Earth-Sci. Rev."},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"5053","DOI":"10.5194\/bg-18-5053-2021","article-title":"Reviews and Syntheses: Arctic Fire Regimes and Emissions in the 21st Century","volume":"18","author":"McCarty","year":"2021","journal-title":"Biogeosciences"},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"807","DOI":"10.1111\/gcb.14804","article-title":"Extensive Land Cover Change across Arctic\u2013Boreal Northwestern North America from Disturbance and Climate Forcing","volume":"26","author":"Wang","year":"2020","journal-title":"Glob. Chang. Biol."},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"6681","DOI":"10.1029\/2019GL082187","article-title":"Climate Change Drives Widespread and Rapid Thermokarst Development in Very Cold Permafrost in the Canadian High Arctic","volume":"46","author":"Farquharson","year":"2019","journal-title":"Geophys. Res. Lett."},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"4279","DOI":"10.5194\/tc-14-4279-2020","article-title":"The Catastrophic Thermokarst Lake Drainage Events of 2018 in Northwestern Alaska: Fast-Forward into the Future","volume":"14","author":"Nitze","year":"2020","journal-title":"Cryosphere"},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"055006","DOI":"10.1088\/1748-9326\/ab12fd","article-title":"Rapid Initialization of Retrogressive Thaw Slumps in the Canadian High Arctic and Their Response to Climate and Terrain Factors","volume":"14","author":"Pollard","year":"2019","journal-title":"Environ. Res. Lett."},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"39","DOI":"10.1139\/as-2016-0027","article-title":"Arctic Permafrost Landscapes in Transition: Towards an Integrated Earth System Approach","volume":"3","author":"Vincent","year":"2017","journal-title":"Arct. Sci."},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"87","DOI":"10.1007\/s13280-011-0218-5","article-title":"Ecological Implications of Changes in the Arctic Cryosphere","volume":"40","author":"Vincent","year":"2011","journal-title":"AMBIO"},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"7129","DOI":"10.5194\/bg-12-7129-2015","article-title":"Reviews and Syntheses: Effects of Permafrost Thaw on Arctic Aquatic Ecosystems","volume":"12","author":"Vonk","year":"2015","journal-title":"Biogeosciences"},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"523","DOI":"10.1890\/08-2025.1","article-title":"Sensitivity of the Carbon Cycle in the Arctic to Climate Change","volume":"79","author":"McGuire","year":"2009","journal-title":"Ecol. Monogr."},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"14","DOI":"10.1007\/s40641-020-00169-5","article-title":"The Arctic Carbon Cycle and Its Response to Changing Climate","volume":"7","author":"Bruhwiler","year":"2021","journal-title":"Curr. Clim. Chang. Rep."},{"key":"ref_25","doi-asserted-by":"crossref","first-page":"171","DOI":"10.1038\/nature14338","article-title":"Climate Change and the Permafrost Carbon Feedback","volume":"520","author":"Schuur","year":"2015","journal-title":"Nature"},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"5147","DOI":"10.1038\/s41467-018-07557-4","article-title":"Degrading Permafrost Puts Arctic Infrastructure at Risk by Mid-Century","volume":"9","author":"Hjort","year":"2018","journal-title":"Nat. Commun."},{"key":"ref_27","doi-asserted-by":"crossref","first-page":"2451","DOI":"10.5194\/tc-15-2451-2021","article-title":"Consequences of Permafrost Degradation for Arctic Infrastructure \u2013 Bridging the Model Gap between Regional and Engineering Scales","volume":"15","author":"Lee","year":"2021","journal-title":"Cryosphere"},{"key":"ref_28","doi-asserted-by":"crossref","first-page":"722","DOI":"10.1038\/s41558-020-0862-5","article-title":"Permafrost Thaw and Northern Development","volume":"10","author":"Burn","year":"2020","journal-title":"Nat. Clim. Chang."},{"key":"ref_29","doi-asserted-by":"crossref","first-page":"42","DOI":"10.5751\/ES-10596-230442","article-title":"Structured Decision Analysis Informed by Traditional Ecological Knowledge as a Tool to Strengthen Subsistence Systems in a Changing Arctic","volume":"23","author":"Christie","year":"2018","journal-title":"Ecol. Soc."},{"key":"ref_30","doi-asserted-by":"crossref","first-page":"258","DOI":"10.14430\/arctic68867","article-title":"Vulnerability of Subsistence Systems Due to Social and Environmental: A Case Study in the Yukon-Kuskokwim Delta, Alaska","volume":"72","author":"Laituri","year":"2019","journal-title":"Arctic"},{"key":"ref_31","doi-asserted-by":"crossref","first-page":"113","DOI":"10.14430\/arctic72446","article-title":"\u201cWe Never Get Stuck\u201d: A Collaborative Analysis of Change and Coastal Community Subsistence Practices in the Northern Bering and Chukchi Seas, Alaska","volume":"74","author":"Huntington","year":"2021","journal-title":"ARCTIC"},{"key":"ref_32","doi-asserted-by":"crossref","first-page":"095003","DOI":"10.1088\/1748-9326\/ac1a36","article-title":"Co-Production of Knowledge Reveals Loss of Indigenous Hunting Opportunities in the Face of Accelerating Arctic Climate Change","volume":"16","author":"Hauser","year":"2021","journal-title":"Environ. Res. Lett."},{"key":"ref_33","unstructured":"Wolken, G., Anna, L., Brubaker, M., Coe, J.A., Christiansen, H., Jones, B.M., Jacquemart, M., Lovholt, F., Kaab, A., and Natali, S. (2021). Glacier and Permafrost Hazards. Arct. Rep. Card."},{"key":"ref_34","doi-asserted-by":"crossref","first-page":"413","DOI":"10.1007\/s10584-016-1819-6","article-title":"Arctic Communities Perceive Climate Impacts on Access as a Critical Challenge to Availability of Subsistence Resources","volume":"139","author":"Brinkman","year":"2016","journal-title":"Clim. Chang."},{"key":"ref_35","doi-asserted-by":"crossref","first-page":"275","DOI":"10.1111\/j.1541-0064.2012.00418.x","article-title":"Climate Change Vulnerability and Adaptation Research Focusing on the Inuit Subsistence Sector in Canada: Directions for Future Research","volume":"56","author":"Ford","year":"2012","journal-title":"Can. Geogr. G\u00e9ographe Can."},{"key":"ref_36","doi-asserted-by":"crossref","unstructured":"Naylor, A.W., Ford, J.D., Pearce, T., Fawcett, D., Clark, D., and van Alstine, J. (2021). Monitoring the Dynamic Vulnerability of an Arctic Subsistence Food System to Climate Change: The Case of Ulukhaktok, NT. PLoS ONE, 16.","DOI":"10.1371\/journal.pone.0258048"},{"key":"ref_37","doi-asserted-by":"crossref","unstructured":"M\u00fcller-Schwarze, D. (2011). The Beaver: Natural History of a Wetlands Engineer, Cornell University Press.","DOI":"10.7591\/cornell\/9780801450105.003.0008"},{"key":"ref_38","unstructured":"Bockstoce, J.R. (2009). Furs and Frontiers in the Far North: The Contest among Native and Foreign Nations for the Bering Strait Fur Trade, Yale University Press."},{"key":"ref_39","unstructured":"Novak, M., Ministry of Natural Resources, T., Baker, J.A., Obbard, M.E., and Malloch, B. (1987). Wild Furbearer Management and Conservation in North America, Ontario Trappers Association."},{"key":"ref_40","doi-asserted-by":"crossref","first-page":"012015","DOI":"10.1088\/1755-1315\/201\/1\/012015","article-title":"Beavers as Ecosystem Engineers\u2014A Review of Their Positive and Negative Effects","volume":"201","author":"Popkov","year":"2018","journal-title":"IOP Conf. Ser. Earth Environ. Sci."},{"key":"ref_41","doi-asserted-by":"crossref","first-page":"025010","DOI":"10.1088\/1748-9326\/abd34e","article-title":"Legacy Effects of Loss of Beavers in the Continental United States","volume":"16","author":"Wohl","year":"2021","journal-title":"Environ. Res. Lett."},{"key":"ref_42","doi-asserted-by":"crossref","first-page":"16800","DOI":"10.1038\/s41598-020-73095-z","article-title":"Beaver Dam Capacity of Canada\u2019s Boreal Plain in Response to Environmental Change","volume":"10","author":"Stoll","year":"2020","journal-title":"Sci. Rep."},{"key":"ref_43","doi-asserted-by":"crossref","first-page":"4478","DOI":"10.1111\/gcb.14332","article-title":"Tundra Be Dammed: Beaver Colonization of the Arctic","volume":"24","author":"Tape","year":"2018","journal-title":"Glob. Chang. Biol."},{"key":"ref_44","doi-asserted-by":"crossref","first-page":"1089","DOI":"10.1130\/0016-7606(1966)77[1089:EFAERW]2.0.CO;2","article-title":"Evidence for an Early Recent Warm Interval in Northwestern Alaska","volume":"77","author":"Mcculloch","year":"1966","journal-title":"GSA Bull."},{"key":"ref_45","unstructured":"(2021, November 01). NeotomaDB.Org|Home. Available online: https:\/\/www.neotomadb.org\/."},{"key":"ref_46","doi-asserted-by":"crossref","unstructured":"Tape, K.D., Clark, J.A., and Jones, B.M. (2021). Beaver Pond Locations in Arctic Alaska, 1949 to 2020. Arct. Data Cent.","DOI":"10.1038\/s41598-022-09330-6"},{"key":"ref_47","doi-asserted-by":"crossref","first-page":"075005","DOI":"10.1088\/1748-9326\/ab80f1","article-title":"Increase in Beaver Dams Controls Surface Water and Thermokarst Dynamics in an Arctic Tundra Region, Baldwin Peninsula, Northwestern Alaska","volume":"15","author":"Jones","year":"2020","journal-title":"Environ. Res. Lett."},{"key":"ref_48","doi-asserted-by":"crossref","unstructured":"Grosse, G., and Jones, B. (2018). Remote Sensing Leads to Better Understanding of Polar Regions. Eos, 99.","DOI":"10.1029\/2018EO111159"},{"key":"ref_49","doi-asserted-by":"crossref","first-page":"5423","DOI":"10.1038\/s41467-018-07663-3","article-title":"Remote Sensing Quantifies Widespread Abundance of Permafrost Region Disturbances across the Arctic and Subarctic","volume":"9","author":"Nitze","year":"2018","journal-title":"Nat. Commun."},{"key":"ref_50","doi-asserted-by":"crossref","first-page":"108","DOI":"10.1002\/ppp.1779","article-title":"Advances in Thermokarst Research","volume":"24","author":"Kokelj","year":"2013","journal-title":"Permafr. Periglac. Process."},{"key":"ref_51","doi-asserted-by":"crossref","first-page":"229","DOI":"10.1029\/2010EO260001","article-title":"Arctic Landscapes in Transition: Responses to Thawing Permafrost","volume":"91","author":"Rowland","year":"2010","journal-title":"Eos Trans. Am. Geophys. Union"},{"key":"ref_52","unstructured":"National Research Council (2014). Opportunities to Use Remote Sensing in Understanding Permafrost and Related Ecological Characteristics: Report of a Workshop, National Academies Press."},{"key":"ref_53","doi-asserted-by":"crossref","first-page":"261","DOI":"10.5194\/essd-11-261-2019","article-title":"A 16-Year Record (2002\u20132017) of Permafrost, Active-Layer, and Meteorological Conditions at the Samoylov Island Arctic Permafrost Research Site, Lena River Delta, Northern Siberia: An Opportunity to Validate Remote-Sensing Data and Land Surface, Snow, and Permafrost Models","volume":"11","author":"Boike","year":"2019","journal-title":"Earth Syst. Sci. Data"},{"key":"ref_54","doi-asserted-by":"crossref","first-page":"55","DOI":"10.1016\/j.rse.2017.05.021","article-title":"Progress in Space-Borne Studies of Permafrost for Climate Science: Towards a Multi-ECV Approach","volume":"203","author":"Trofaier","year":"2017","journal-title":"Remote Sens. Environ."},{"key":"ref_55","doi-asserted-by":"crossref","first-page":"15865","DOI":"10.1038\/srep15865","article-title":"Recent Arctic Tundra Fire Initiates Widespread Thermokarst Development","volume":"5","author":"Jones","year":"2015","journal-title":"Sci. Rep."},{"key":"ref_56","doi-asserted-by":"crossref","unstructured":"Van der Sluijs, J., Kokelj, S.V., Fraser, R.H., Tunnicliffe, J., and Lacelle, D. (2018). Permafrost Terrain Dynamics and Infrastructure Impacts Revealed by UAV Photogrammetry and Thermal Imaging. Remote Sens., 10.","DOI":"10.3390\/rs10111734"},{"key":"ref_57","unstructured":"Daly, C., Smith, J., and Halbleib, M. (2018). 1981\u20132010 High-Resolution Temperature and Precipitation Maps for Alaska Final Report. PRISM Climate Group, Oregon State University."},{"key":"ref_58","doi-asserted-by":"crossref","first-page":"267","DOI":"10.1111\/j.1654-1103.2005.tb02365.x","article-title":"The Circumpolar Arctic Vegetation Map","volume":"16","author":"Walker","year":"2005","journal-title":"J. Veg. Sci."},{"key":"ref_59","doi-asserted-by":"crossref","first-page":"ALT 2-1","DOI":"10.1029\/2001JD000852","article-title":"Patterns and Dynamics of Treeline Advance on the Seward Peninsula, Alaska","volume":"107","author":"Lloyd","year":"2002","journal-title":"J. Geophys. Res. Atmos."},{"key":"ref_60","unstructured":"Jorgenson, M., Yoshikawa, K., Kanevskiy, M., Shur, Y., Romanovsky, V., Marchenko, S., and Jones, B. (2008). Permafrost Characteristics of Alaska + Map, University of Alaska."},{"key":"ref_61","doi-asserted-by":"crossref","first-page":"13043","DOI":"10.1038\/ncomms13043","article-title":"Circumpolar Distribution and Carbon Storage of Thermokarst Landscapes","volume":"7","author":"Olefeldt","year":"2016","journal-title":"Nat. Commun."},{"key":"ref_62","unstructured":"Jones, B.M., Tape, K.D., Clark, J.A., Bondurant, A.C., Ward Jones, M.K., Gaglioti, B.V., Elder, C.D., Witharana, C., and Miller, C.E. (2021). Swan Lake Creek Study Reach Datasets\u2014Beaver Dams, Flowlines, and UAS Imagery; Seward Peninsula, Alaska; 2006\u20132021. Arct. Data Cent."},{"key":"ref_63","unstructured":"Porter, C., Morin, P., Howat, I., Noh, M.-J., Bates, B., Peterman, K., Keesey, S., Schlenk, M., Gardiner, J., and Tomko, K. (2021, November 02). ArcticDEM 2018. Available online: https:\/\/www.jstor.org\/stable\/resrep23563.1?seq=1#metadata_info_tab_contents."},{"key":"ref_64","doi-asserted-by":"crossref","first-page":"127","DOI":"10.1016\/0034-4257(95)00137-P","article-title":"Development of Methods for Mapping Global Snow Cover Using Moderate Resolution Imaging Spectroradiometer Data","volume":"54","author":"Hall","year":"1995","journal-title":"Remote Sens. Environ."},{"key":"ref_65","doi-asserted-by":"crossref","first-page":"503","DOI":"10.1016\/j.tree.2005.05.011","article-title":"Using the Satellite-Derived NDVI to Assess Ecological Responses to Environmental Change","volume":"20","author":"Pettorelli","year":"2005","journal-title":"Trends Ecol. Evol."},{"key":"ref_66","unstructured":"(2021, October 26). Sentinel Hub. Available online: https:\/\/www.sentinel-hub.com\/."},{"key":"ref_67","unstructured":"Climate Data Online (CDO) (2021, November 02). The National Climatic Data Center\u2019s (NCDC) Climate Data Online (CDO) Provides Free Access to NCDC\u2019s Archive of Historical Weather and Climate Data in Addition to Station History Information. | National Climatic Data Center (NCDC), Available online: https:\/\/www.ncdc.noaa.gov\/cdo-web\/."},{"key":"ref_68","doi-asserted-by":"crossref","first-page":"122","DOI":"10.1007\/s10021-020-00507-6","article-title":"Multiple Ecosystem Effects of Extreme Weather Events in the Arctic","volume":"24","author":"Christensen","year":"2021","journal-title":"Ecosystems"},{"key":"ref_69","doi-asserted-by":"crossref","first-page":"e2021219118","DOI":"10.1073\/pnas.2021219118","article-title":"Declining Greenness in Arctic-Boreal Lakes","volume":"118","author":"Kuhn","year":"2021","journal-title":"Proc. Natl. Acad. Sci. USA"},{"key":"ref_70","doi-asserted-by":"crossref","first-page":"e2020GL089186","DOI":"10.1029\/2020GL089186","article-title":"Evidence of Hydrological Intensification and Regime Change From Northern Alaskan Watershed Runoff","volume":"47","author":"Arp","year":"2020","journal-title":"Geophys. Res. Lett."},{"key":"ref_71","doi-asserted-by":"crossref","first-page":"309","DOI":"10.3955\/0029-344X-82.4.309","article-title":"Recent History (1988\u20132004) of Beaver Dams along Bridge Creek in Central Oregon","volume":"82","author":"Demmer","year":"2008","journal-title":"Northwest Sci."},{"key":"ref_72","doi-asserted-by":"crossref","first-page":"48","DOI":"10.1016\/j.geomorph.2004.08.016","article-title":"The Geomorphic Influences of Beaver Dams and Failures of Beaver Dams","volume":"71","author":"Butler","year":"2005","journal-title":"Geomorphology"},{"key":"ref_73","doi-asserted-by":"crossref","first-page":"103623","DOI":"10.1016\/j.earscirev.2021.103623","article-title":"Dam Builders and Their Works: Beaver Influences on the Structure and Function of River Corridor Hydrology, Geomorphology, Biogeochemistry and Ecosystems","volume":"218","author":"Larsen","year":"2021","journal-title":"Earth-Sci. Rev."},{"key":"ref_74","doi-asserted-by":"crossref","first-page":"908","DOI":"10.1525\/bio.2010.60.11.7","article-title":"The River Discontinuum: Applying Beaver Modifications to Baseline Conditions for Restoration of Forested Headwaters","volume":"60","author":"Burchsted","year":"2010","journal-title":"BioScience"},{"key":"ref_75","doi-asserted-by":"crossref","first-page":"2100","DOI":"10.1139\/x05-153","article-title":"Response of Boreal Ecosystems to Varying Modes of Permafrost Degradation","volume":"35","author":"Jorgenson","year":"2005","journal-title":"Can. J. For. Res."},{"key":"ref_76","unstructured":"Jorgenson, M.T. (2021, November 02). 8.20 Thermokarst Terrains. Available online: https:\/\/www.academia.edu\/25248005\/Thermokarst_Terrains."},{"key":"ref_77","doi-asserted-by":"crossref","first-page":"336","DOI":"10.3389\/feart.2020.00336","article-title":"Rapid Fluvio-Thermal Erosion of a Yedoma Permafrost Cliff in the Lena River Delta","volume":"8","author":"Fuchs","year":"2020","journal-title":"Front. Earth Sci."},{"key":"ref_78","doi-asserted-by":"crossref","first-page":"277","DOI":"10.1002\/ppp.2105","article-title":"Fluvio-Thermal Erosion and Thermal Denudation in the Yedoma Region of Northern Alaska: Revisiting the Itkillik River Exposure","volume":"32","author":"Shur","year":"2021","journal-title":"Permafr. Periglac. Process."},{"key":"ref_79","doi-asserted-by":"crossref","first-page":"229","DOI":"10.1002\/ppp.595","article-title":"Observation of Rapid Drainage System Development by Thermal Erosion of Ice Wedges on Bylot Island, Canadian Arctic Archipelago","volume":"18","author":"Fortier","year":"2007","journal-title":"Permafr. Periglac. Process."},{"key":"ref_80","doi-asserted-by":"crossref","first-page":"979","DOI":"10.1139\/e2012-015","article-title":"Geomorphology of a Thermo-Erosion Gully, Bylot Island, Nunavut, Canada1This Article Is One of a Series of Papers Published in This CJES Special Issue on the Theme of Fundamental and Applied Research on Permafrost in Canada.2Polar Continental Shelf Project Contribution 043-11","volume":"49","author":"Godin","year":"2012","journal-title":"Can. J. Earth Sci."},{"key":"ref_81","doi-asserted-by":"crossref","unstructured":"Turner, K.W., Pearce, M.D., and Hughes, D.D. (2021). Detailed Characterization and Monitoring of a Retrogressive Thaw Slump from Remotely Piloted Aircraft Systems and Identifying Associated Influence on Carbon and Nitrogen Export. Remote Sens., 13.","DOI":"10.3390\/rs13020171"},{"key":"ref_82","doi-asserted-by":"crossref","first-page":"17135","DOI":"10.3390\/rs71215874","article-title":"Variations of Microwave Scattering Properties by Seasonal Freeze\/Thaw Transition in the Permafrost Active Layer Observed by ALOS PALSAR Polarimetric Data","volume":"7","author":"Park","year":"2015","journal-title":"Remote Sens."},{"key":"ref_83","doi-asserted-by":"crossref","unstructured":"Touzi, R., Hong, G., Motohka, T., Shinichi, S., and De Lisle, D. (August, January 28). Investigation of Compact SAR L and C Band Complementarity for Permafrost Characterization In Arctic Regions. Proceedings of the IGARSS 2019\u20142019 IEEE International Geoscience and Remote Sensing Symposium, Yokohama, Japan.","DOI":"10.1109\/IGARSS.2019.8898510"},{"key":"ref_84","doi-asserted-by":"crossref","first-page":"2041","DOI":"10.5194\/tc-15-2041-2021","article-title":"Top-of-Permafrost Ground Ice Indicated by Remotely Sensed Late-Season Subsidence","volume":"15","author":"Zwieback","year":"2021","journal-title":"Cryosphere"}],"container-title":["Remote Sensing"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/2072-4292\/13\/23\/4863\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T07:37:53Z","timestamp":1760168273000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/2072-4292\/13\/23\/4863"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2021,11,30]]},"references-count":84,"journal-issue":{"issue":"23","published-online":{"date-parts":[[2021,12]]}},"alternative-id":["rs13234863"],"URL":"https:\/\/doi.org\/10.3390\/rs13234863","relation":{},"ISSN":["2072-4292"],"issn-type":[{"value":"2072-4292","type":"electronic"}],"subject":[],"published":{"date-parts":[[2021,11,30]]}}}