Search Results - "Frost, Gerald"

Tall shrub and tree expansion in Siberian tundra ecotones since the 1960s by Frost, Gerald V, Epstein, Howard E

“…Circumpolar expansion of tall shrubs and trees into Arctic tundra is widely thought to be occurring as a result of recent climate warming, but little…”
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Recent trends and remaining challenges for optical remote sensing of Arctic tundra vegetation: A review and outlook by Beamish, Alison, Raynolds, Martha K., Epstein, Howard, Frost, Gerald V., Macander, Matthew J., Bergstedt, Helena, Bartsch, Annett, Kruse, Stefan, Miles, Victoria, Tanis, Cemal Melih, Heim, Birgit, Fuchs, Matthias, Chabrillat, Sabine, Shevtsova, Iuliia, Verdonen, Mariana, Wagner, Johann

“…A systematic review and inventory of recent research relating to optical remote sensing of Arctic vegetation was conducted, and thematic and geographical…”
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Pan-Arctic ice-wedge degradation in warming permafrost and its influence on tundra hydrology by Liljedahl, Anna K., Boike, Julia, Daanen, Ronald P., Fedorov, Alexander N., Frost, Gerald V., Grosse, Guido, Hinzman, Larry D., Iijma, Yoshihiro, Jorgenson, Janet C., Matveyeva, Nadya, Necsoiu, Marius, Raynolds, Martha K., Romanovsky, Vladimir E., Schulla, Jörg, Tape, Ken D., Walker, Donald A., Wilson, Cathy J., Yabuki, Hironori, Zona, Donatella

“…Ice wedges are common features of the subsurface in permafrost regions. They develop by repeated frost cracking and ice vein growth over hundreds to thousands…”
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Time-series maps reveal widespread change in plant functional type cover across Arctic and boreal Alaska and Yukon by Macander, Matthew J, Nelson, Peter R, Nawrocki, Timm W, Frost, Gerald V, Orndahl, Kathleen M, Palm, Eric C, Wells, Aaron F, Goetz, Scott J

“…Abstract Widespread changes in the distribution and abundance of plant functional types (PFTs) are occurring in Arctic and boreal ecosystems due to the…”
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Multi-decadal patterns of vegetation succession after tundra fire on the Yukon-Kuskokwim Delta, Alaska by Frost, Gerald V, Loehman, Rachel A, Saperstein, Lisa B, Macander, Matthew J, Nelson, Peter R, Paradis, David P, Natali, Susan M

“…Alaska's Yukon-Kuskokwim Delta (YKD) is one of the warmest parts of the Arctic tundra biome and tundra fires are common in its upland areas. Here, we combine…”
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Seasonal and Long-Term Changes to Active-Layer Temperatures after Tall Shrubland Expansion and Succession in Arctic Tundra by Frost, Gerald V., Epstein, Howard E., Walker, Donald A., Matyshak, Georgiy, Ermokhina, Ksenia

“…Vegetation, active-layer soils, and snow cover regulate energy exchange between the atmosphere and permafrost. Therefore, interactions between changes to…”
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Feasibility of tundra vegetation height retrieval from Sentinel-1 and Sentinel-2 data by Bartsch, Annett, Widhalm, Barbara, Leibman, Marina, Ermokhina, Ksenia, Kumpula, Timo, Skarin, Anna, Wilcox, Evan J., Jones, Benjamin M., Frost, Gerald V., Höfler, Angelika, Pointner, Georg

“…The quantification of vegetation height for the circumpolar Arctic tundra biome is of interest for a wide range of applications, including biomass and habitat…”
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Tundra vegetation change and impacts on permafrost by Heijmans, Monique M. P. D., Magnússon, Rúna Í., Lara, Mark J., Frost, Gerald V., Myers-Smith, Isla H., van Huissteden, Jacobus, Jorgenson, M. Torre, Fedorov, Alexander N., Epstein, Howard E., Lawrence, David M., Limpens, Juul

“…Not provided…”
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Lichen cover mapping for caribou ranges in interior Alaska and Yukon by Macander, Matthew J, Palm, Eric C, Frost, Gerald V, Herriges, Jim D, Nelson, Peter R, Roland, Carl, Russell, Kelsey L M, Suitor, Mike J, Bentzen, Torsten W, Joly, Kyle, Goetz, Scott J, Hebblewhite, Mark

“…Previous research indicates that the effects of climate warming, including shrub expansion and increased fire frequency may lead to declining lichen abundance…”
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Climate drivers of Arctic tundra variability and change using an indicators framework by Bhatt, Uma S, Walker, Donald A, Raynolds, Martha K, Walsh, John E, Bieniek, Peter A, Cai, Lei, Comiso, Josefino C, Epstein, Howard E, Frost, Gerald V, Gersten, Robert, Hendricks, Amy S, Pinzon, Jorge E, Stock, Larry, Tucker, Compton J

“…This study applies an indicators framework to investigate climate drivers of tundra vegetation trends and variability over the 1982–2019 period. Previously…”
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Drivers of Landscape Changes in Coastal Ecosystems on the Yukon-Kuskokwim Delta, Alaska by Jorgenson, M., Frost, Gerald, Dissing, Dorte

“…The Yukon-Kuskokwim Delta (YKD) is the largest delta in western North America and its productive coastal ecosystems support globally significant populations of…”
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Regional Quantitative Cover Mapping of Tundra Plant Functional Types in Arctic Alaska by Macander, Matthew, Frost, Gerald, Nelson, Peter, Swingley, Christopher

“…Ecosystem maps are foundational tools that support multi-disciplinary study design and applications including wildlife habitat assessment, monitoring and…”
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Regional and landscape-scale variability of Landsat-observed vegetation dynamics in northwest Siberian tundra by Frost, Gerald V, Epstein, Howard E, Walker, Donald A

“…Widespread increases in Arctic tundra productivity have been documented for decades using coarse-scale satellite observations, but finer-scale observations…”
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Regional Patterns and Asynchronous Onset of Ice-Wedge Degradation since the Mid-20th Century in Arctic Alaska by Frost, Gerald, Christopherson, Tracy, Jorgenson, M., Liljedahl, Anna, Macander, Matthew, Walker, Donald, Wells, Aaron

“…Ice-wedge polygons are widespread and conspicuous surficial expressions of ground-ice in permafrost landscapes. Thawing of ice wedges triggers differential…”
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Dynamic disequilibrium: Recent widespread increases in vegetation cover on subarctic floodplains of Interior Alaska by Frost, Gerald V., Roland, Carl A., Schmidt, Joshua H.

“…Boreal forest and tundra ecosystems are undergoing rapid climatic and environmental changes with consequences for ecosystem structure, function, and services…”
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Patterned-ground facilitates shrub expansion in Low Arctic tundra by Frost, Gerald V, Epstein, Howard E, Walker, Donald A, Matyshak, Georgiy, Ermokhina, Ksenia

“…Recent expansion of tall shrubs in Low Arctic tundra is widely seen as a response to climate warming, but shrubification is not occurring as a simple function…”
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Spatial patterns of arctic tundra vegetation properties on different soils along the Eurasia Arctic Transect, and insights for a changing Arctic by Epstein, Howard E, Walker, Donald A, Frost, Gerald V, Raynolds, Martha K, Bhatt, Uma, Daanen, Ronald, Forbes, Bruce, Geml, Jozsef, Kaärlejarvi, Elina, Khitun, Olga, Khomutov, Artem, Kuss, Patrick, Leibman, Marina, Matyshak, Georgy, Moskalenko, Nataliya, Orekhov, Pavel, Romanovsky, Vladimir E, Timling, Ina

“…Vegetation properties of arctic tundra vary dramatically across its full latitudinal extent, yet few studies have quantified tundra ecosystem properties across…”
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Eyes of the world on a warmer, less frozen, and greener Arctic by Frost, Gerald V., Bhatt, Uma S., Macander, Matthew J., Epstein, Howard E., Raynolds, Martha K., Waigl, Christine F., Walker, Donald A.

“…Rapid atmospheric warming and sea‐ice retreat are driving widespread changes in Arctic ecosystems, among the most pervasive of which is the “greening of the…”
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Vegetation type is an important predictor of the arctic summer land surface energy budget by Oehri, Jacqueline, Schaepman-Strub, Gabriela, Kim, Jin-Soo, Grysko, Raleigh, Kropp, Heather, Grünberg, Inge, Zemlianskii, Vitalii, Sonnentag, Oliver, Euskirchen, Eugénie S., Reji Chacko, Merin, Muscari, Giovanni, Blanken, Peter D., Dean, Joshua F., di Sarra, Alcide, Harding, Richard J., Sobota, Ireneusz, Kutzbach, Lars, Plekhanova, Elena, Riihelä, Aku, Boike, Julia, Miller, Nathaniel B., Beringer, Jason, López-Blanco, Efrén, Stoy, Paul C., Sullivan, Ryan C., Kejna, Marek, Parmentier, Frans-Jan W., Gamon, John A., Mastepanov, Mikhail, Wille, Christian, Jackowicz-Korczynski, Marcin, Karger, Dirk N., Quinton, William L., Putkonen, Jaakko, van As, Dirk, Christensen, Torben R., Hakuba, Maria Z., Stone, Robert S., Metzger, Stefan, Vandecrux, Baptiste, Frost, Gerald V., Wild, Martin, Hansen, Birger, Meloni, Daniela, Domine, Florent, te Beest, Mariska, Sachs, Torsten, Kalhori, Aram, Rocha, Adrian V., Williamson, Scott N., Morris, Sara, Atchley, Adam L., Essery, Richard, Runkle, Benjamin R. K., Holl, David, Riihimaki, Laura D., Iwata, Hiroki, Schuur, Edward A. G., Cox, Christopher J., Grachev, Andrey A., McFadden, Joseph P., Fausto, Robert S., Göckede, Mathias, Ueyama, Masahito, Pirk, Norbert, de Boer, Gijs, Bret-Harte, M. Syndonia, Leppäranta, Matti, Steffen, Konrad, Friborg, Thomas, Ohmura, Atsumu, Edgar, Colin W., Olofsson, Johan, Chambers, Scott D.

“…Despite the importance of high-latitude surface energy budgets (SEBs) for land-climate interactions in the rapidly changing Arctic, uncertainties in their…”
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Assessment of LiDAR and Spectral Techniques for High-Resolution Mapping of Sporadic Permafrost on the Yukon-Kuskokwim Delta, Alaska by Whitley, Matthew, Frost, Gerald, Jorgenson, M., Macander, Matthew, Maio, Chris, Winder, Samantha

“…Western Alaska’s Yukon-Kuskokwim Delta (YKD) spans nearly 67,200 km2 and is among the largest and most productive coastal wetland ecosystems in the pan-Arctic…”
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