Publications

Publications listed below by year

The Primary Investigators (and occasionally Co-PIs) of the ITEX-AON are in bold.
To access publications clink the link to the journal or send a request Bob Hollister or visit Google Scholar

2023

Buchwal, A., M.S. Bret-Harte, H. Bailey, and J.M. Welker. 2023. From intra-plant to regional scale: June temperatures and regional climates directly and indirectly control Betula nana growth in arctic Alaska. Ecosystems 26:491–509. 10.1007/s10021-022-00771-8.

Elmendorf, S.C., and R.D. Hollister. 2023. Limits on phenological response to high temperature in the Arctic. Scientific Reports 13:208. DOI: 10.1038/s41598-022-26955-9.

García Criado, M., I.H. Myers-Smith, A.D. Bjorkman, S. Normand, A. Blach-Overgaard, H.J.D. Thomas, A. Eskelinen, K. Happonen, J.M. Alatalo, A. Anadon-Rosell, I. Aubin, M. Te Beest, K.R. Betway-May, D. Blok, A. Buras, B.E.L. Cerabolini, K. Christie, J.H.C. Cornelissen, B.C. Forbes, E.R. Frei, P. Grogan, L. Hermanutz, R.D. Hollister, J. Hudson, M. Iturrate-Garcia, E. Kaarlejärvi, M. Kleyer, L.J. Lamarque, J.J. Lembrechts, E. Lévesque, M. Luoto, P. Macek, J.L. May, J.S. Prevéy, G. Schaepman-Strub, S.N. Sheremetiev, L. Siegwart Collier, N.A. Soudzilovskaia, A. Trant, S.E. Venn, and A.-M. Virkkala. 2023. Plant traits poorly predict winner and loser shrub species in a warming tundra biome. Nature Communications 14:3837. DOI: 10.1038/s41467-023-39573-4.

Hollister, R.D., C. Elphinstone, G.H.R. Henry, A.D. Bjorkman, K. Klanderud, R.G. Björk, M.P. Björkman, S. Bokhorst, M. Carbognani, E.J. Cooper, E. Dorrepaal, S.C. Elmendorf, N. Fetcher, E.C. Gallois, J. Gudmundsson, N.C. Healey, I.S. Jónsdóttir, I.J. Klarenberg, S.F. Oberbauer, P. Macek, J.L. May, A. Mereghetti, U. Molau, A. Petraglia, R. Rinnan, C. Rixen, and P. Wookey. 2023. A review of open top chamber (OTC) performance across the ITEX Network. Arctic Science AS-2022-0030. DOI: 10.1139/AS-2022-0030.

Jespersen, R.G., M. Anderson-Smith, P.F. Sullivan, R.J. Dial, and J.M. Welker. 2023. NDVI changes in the Arctic: Functional significance in the moist acidic tundra of Northern Alaska. PLOS ONE 18:e0285030. DOI: 10.1371/journal.pone.0285030.

Pedron, S.A., R.G. Jespersen, X. Xu, Y. Khazindar, J.M. Welker, and C.I. Czimczik. 2023. More snow accelerates legacy carbon emissions from Arctic permafrost. AGU Advances 4:e2023AV000942. DOI: 10.1029/2023AV000942.

Sellers, H.L., S.A.V. Zesati, S.C. Elmendorf, A. Locher, S.F. Oberbauer, C.E. Tweedie, C. Witharana, and R.D. Hollister. 2023. Can plot-level photographs accurately estimate tundra vegetation cover in Northern Alaska? Remote Sensing 15:rs15081972. DOI: 10.3390/rs15081972.

2022

Baldwin, T.A., and S.F. Oberbauer. 2022. Essential oil content of Rhododendron tomentosum responds strongly to manipulation of ecosystem resources in Arctic Alaska. Arctic Science 8:916–934. DOI: 10.1139/as-2020-0055.

Betway-May, K.R., R.D. Hollister, J.L. May, J.A. Harris, W.A. Gould, and S.F. Oberbauer. 2022. Can plant functional traits explain shifts in community composition in a changing Arctic? Arctic Science 8:899–915. DOI: 10.1139/as-2020-0036.

Christoffersen, H.L. 2022. Using Plot Photographs to Estimate Tundra Vegetation Cover in Northern Alaska. Master’s Thesis, Grand Valley State University.

Cunliffe, A.M., K. Anderson, F. Boschetti, R.E. Brazier, H.A. Graham, I.H. Myers‐Smith, T. Astor, M.M. Boer, L.G. Calvo, P.E. Clark, M.D. Cramer, M.S. Encinas‐Lara, S.M. Escarzaga, J.M. Fernández‐Guisuraga, A.G. Fisher, K. Gdulová, B.M. Gillespie, A. Griebel, N.P. Hanan, M.S. Hanggito, S. Haselberger, C.A. Havrilla, P. Heilman, W. Ji, J.W. Karl, M. Kirchhoff, S. Kraushaar, M.B. Lyons, I. Marzolff, M.E. Mauritz, C.D. McIntire, D. Metzen, L.A. Méndez‐Barroso, S.C. Power, J. Prošek, E. Sanz‐Ablanedo, K.J. Sauer, D. Schulze‐Brüninghoff, P. Šímová, S. Sitch, J.L. Smit, C.M. Steele, S. Suárez‐Seoane, S.A. Vargas, M. Villarreal, F. Visser, M. Wachendorf, H. Wirnsberger, and R. Wojcikiewicz. 2022. Global application of an unoccupied aerial vehicle photogrammetry protocol for predicting aboveground biomass in non‐forest ecosystems. Remote Sensing in Ecology and Conservation 8:57–71. 10.1002/rse2.228.

Curasi, S.R., N. Fetcher, R.E. Hewitt, P.M. Lafleur, M.M. Loranty, M.C. Mack, J.L. May, I.H. Myers-Smith, S.M. Natali, S.F. Oberbauer, T.C. Parker, O. Sonnentag, S.A. Vargas Zesati, S.D. Wullschleger, and A.V. Rocha. 2022. Range shifts in a foundation sedge potentially induce large Arctic ecosystem carbon losses and gains. Environmental Research Letters 17:045024. DOI: 10.1088/1748-9326/ac6005.

Harris, J.A., R.D. Hollister, T.F. Botting, C.E. Tweedie, K.R. Betway, J.L. May, R.T.S. Barrett, J.A. Leibig, H.L. Christoffersen, S.A. Vargas, M. Orejel, and T.L. Fuson. 2022. Understanding the climate impacts on decadal vegetation change in northern Alaska. Arctic Science 8:878–898. DOI: 10.1139/as-2020-0050.

Henry, G.H.R., R.D. Hollister, K. Klanderud, R.G. Björk, A.D. Bjorkman, C. Elphinstone, I.S. Jónsdóttir, U. Molau, A. Petraglia, S.F. Oberbauer, C. Rixen, and P.A. Wookey. 2022. The International Tundra Experiment (ITEX): 30 years of research on tundra ecosystems. Arctic Science 8:550–571. DOI: 10.1139/as-2022-0041.

Huemmrich, K.F., P. Campbell, S.A. Vargas Z, S. Sackett, S. Unger, J. May, C. Tweedie, and E. Middleton. 2022. Leaf-level chlorophyll fluorescence and reflectance spectra of high latitude plants. Environmental Research Communications 4:035001. DOI: 10.1088/2515-7620/ac5365.

Jeanbille, M., K. Clemmensen, J. Juhanson, A. Michelsen, E.J. Cooper, G.H.R. Henry, A. Hofgaard, R.D. Hollister, I.S. Jónsdóttir, K. Klanderud, A. Tolvanen, and S. Hallin. 2022. Site-specific responses of fungal and bacterial abundances to experimental warming in litter and soil across Arctic and alpine tundra. Arctic Science 8:992–1005. DOI: 10.1139/as-2020-0053.

Jespersen, R.G., A.J. Leffler, M. Väisänen, and J.M. Welker. 2022. Resistance and change in a High Arctic ecosystem, NW Greenland: Differential sensitivity of ecosystem metrics to 15 years of experimental warming and wetting. Global Change Biology 28:1853–1869. DOI: 10.1111/gcb.16027.

Leffler, A.J., H.A. Becker, K.C. Kelsey, D.A. Spalinger, and J.M. Welker. 2022. Short-term effects of summer warming on caribou forage quality are mitigated by long-term warming. Ecosphere 13:e4104. 10.1002/ecs2.4104.

Lett, S., I.S. Jónsdóttir, A. Becker-Scarpitta, C.T. Christiansen, H. During, F. Ekelund, G.H.R. Henry, S.I. Lang, A. Michelsen, K. Rousk, J.M. Alatalo, K.R. Betway, S.B. Rui, T. Callaghan, M. Carbognani, E.J. Cooper, J.H.C. Cornelissen, E. Dorrepaal, D. Egelkraut, T.G. Elumeeva, S.V. Haugum, R.D. Hollister, A.K. Jägerbrand, F. Keuper, K. Klanderud, E. Lévesque, X. Liu, J. May, P. Michel, M. Mörsdorf, A. Petraglia, C. Rixen, B.J.M. Robroek, A.M. Rzepczynska, N.A. Soudzilovskaia, A. Tolvanen, V. Vandvik, I. Volkov, I. Volkova, and K. van Zuijlen. 2022. Can bryophyte groups increase functional resolution in tundra ecosystems? Arctic Science 8:609–637. DOI: 10.1139/as-2020-0057.

May, J.L., S.F. Oberbauer, S.L. Unger, M.J. Simon, K.R. Betway, and R.D. Hollister. 2022. Shading decreases and delays NDVI and flowering of prostrate Arctic shrubs. Arctic Science 8:967–978. DOI: 10.1139/as-2020-0043.

Nelson, P.R., A.J. Maguire, Z. Pierrat, E.L. Orcutt, D. Yang, S. Serbin, G.V. Frost, M.J. Macander, T.S. Magney, D.R. Thompson, J.A. Wang, S.F. Oberbauer, S.V. Zesati, S.J. Davidson, H.E. Epstein, S. Unger, P.K.E. Campbell, N. Carmon, M. Velez‐Reyes, and K.F. Huemmrich. 2022. Remote sensing of tundra ecosystems using high spectral resolution reflectance: Opportunities and challenges. Journal of Geophysical Research: Biogeosciences 127:e2021JG006697. DOI: 10.1029/2021JG006697.

Pedron, S.A., J.M. Welker, E.S. Euskirchen, E.S. Klein, J.C. Walker, X. Xu, and C.I. Czimczik. 2022. Closing the winter gap—Year‐round measurements of soil CO2 emission sources in Arctic tundra. Geophysical Research Letters 49. DOI: 10.1029/2021GL097347.

Prevéy, J.S., S.C. Elmendorf, A. Bjorkman, J.M. Alatalo, I. Ashton, J.J. Assmann, R.G. Björk, M.P. Björkman, N. Cannone, M. Carbognani, C. Chisholm, K. Clark, C.G. Collins, E.J. Cooper, B. Elberling, E.R. Frei, G.R.H. Henry, R.D. Hollister, T.T. Høye, I.S. Jónsdóttir, J.T. Kerby, K. Klanderud, C. Kopp, E. Levesque, M. Mauritz, U. Molau, I.H. Myers-Smith, S.M. Natali, S.F. Oberbauer, Z. Panchen, A. Petraglia, E. Post, C. Rixen, H. Rodenhizer, S.B. Rumpf, N.M. Schmidt, T. Schuur, P. Semenchuk, J.G. Smith, K. Suding, Ø. Totland, T. Troxler, H. Wahren, J.M. Welker, S. Wipf, and Y. Yang. 2022. The tundra phenology database: more than two decades of tundra phenology responses to climate change. Arctic Science 8:1026–1039. DOI: 10.1139/as-2020-0041.

Rixen, C., T.T. Høye, P. Macek, R. Aerts, J.M. Alatalo, J.T. Anderson, P.A. Arnold, I.C. Barrio, J.W. Bjerke, M.P. Björkman, D. Blok, G. Blume-Werry, J. Boike, S. Bokhorst, M. Carbognani, C.T. Christiansen, P. Convey, E.J. Cooper, J.H.C. Cornelissen, S.J. Coulson, E. Dorrepaal, B. Elberling, S.C. Elmendorf, C. Elphinstone, T.G.W. Forte, E.R. Frei, S.R. Geange, F. Gehrmann, C. Gibson, P. Grogan, A.H. Halbritter, J. Harte, G.H.R. Henry, D.W. Inouye, R.E. Irwin, G. Jespersen, I.S. Jónsdóttir, J.Y. Jung, D.H. Klinges, G. Kudo, J. Lämsä, H. Lee, J.J. Lembrechts, S. Lett, J.S. Lynn, H.M.R. Mann, M. Mastepanov, J. Morse, I.H. Myers-Smith, J. Olofsson, R. Paavola, A. Petraglia, G.K. Phoenix, P. Semenchuk, M.B. Siewert, R. Slatyer, M.J. Spasojevic, K. Suding, P. Sullivan, K.L. Thompson, M. Väisänen, V. Vandvik, S. Venn, J. Walz, R. Way, J.M. Welker, S. Wipf, and S. Zong. 2022. Winters are changing: snow effects on Arctic and alpine tundra ecosystems. Arctic Science 8:572–608. DOI: 10.1139/as-2020-0058.

Virkkala, A.-M., S.M. Natali, B.M. Rogers, J.D. Watts, K. Savage, S.J. Connon, M. Mauritz, E.A.G. Schuur, D. Peter, C. Minions, J. Nojeim, R. Commane, C.A. Emmerton, M. Goeckede, M. Helbig, D. Holl, H. Iwata, H. Kobayashi, P. Kolari, E. López-Blanco, M.E. Marushchak, M. Mastepanov, L. Merbold, F.-J.W. Parmentier, M. Peichl, T. Sachs, O. Sonnentag, M. Ueyama, C. Voigt, M. Aurela, J. Boike, G. Celis, N. Chae, T.R. Christensen, M.S. Bret-Harte, S. Dengel, H. Dolman, C.W. Edgar, B. Elberling, E. Euskirchen, A. Grelle, J. Hatakka, E. Humphreys, J. Järveoja, A. Kotani, L. Kutzbach, T. Laurila, A. Lohila, I. Mammarella, Y. Matsuura, G. Meyer, M.B. Nilsson, S.F. Oberbauer, S.-J. Park, R. Petrov, A.S. Prokushkin, C. Schulze, V.L. St. Louis, E.-S. Tuittila, J.-P. Tuovinen, W. Quinton, A. Varlagin, D. Zona, and V.I. Zyryanov. 2022. The ABCflux database: Arctic–boreal CO2 flux observations and ancillary information aggregated to monthly time steps across terrestrial ecosystems. Earth System Science Data 14:179–208. DOI: 10.5194/essd-14-179-2022.

2021

Aryal, B., S.M. Escarzaga, S.A. Vargas Zesati, M. Velez-Reyes, O. Fuentes, and C. Tweedie. 2021. Semi-automated semantic segmentation of Arctic shorelines using very high-resolution airborne imagery, spectral indices and weakly supervised machine learning approaches. Remote Sensing 13:4572. DOI: 10.3390/rs13224572.

Betway, K.R., R.D. Hollister, J.L. May, and S.F. Oberbauer. 2021. Species‐specific trends and variability in plant functional traits across a latitudinal gradient in northern Alaska. Journal of Vegetation Science 32:e13040. DOI: 10.1111/jvs.13040.

Collins, C.G., S.C. Elmendorf, R.D. Hollister, G.H.R. Henry, K. Clark, A.D. Bjorkman, I.H. Myers-Smith, J.S. Prevéy, I.W. Ashton, J.J. Assmann, J.M. Alatalo, M. Carbognani, C. Chisholm, E.J. Cooper, C. Forrester, I.S. Jónsdóttir, K. Klanderud, C.W. Kopp, C. Livensperger, M. Mauritz, J.L. May, U. Molau, S.F. Oberbauer, E. Ogburn, Z.A. Panchen, A. Petraglia, E. Post, C. Rixen, H. Rodenhizer, E.A.G. Schuur, P. Semenchuk, J.G. Smith, H. Steltzer, Ø. Totland, M.D. Walker, J.M. Welker, and K.N. Suding. 2021. Experimental warming differentially affects vegetative and reproductive phenology of tundra plants. Nature Communications 12:3442. DOI: 10.1038/s41467-021-23841-2.

Kelsey, K.C., S.H. Pedersen, A.J. Leffler, J.O. Sexton, M. Feng, and J.M. Welker. 2021. Winter snow and spring temperature have differential effects on vegetation phenology and productivity across Arctic plant communities. Global Change Biology 27:1572–1586. DOI: 10.1111/gcb.15505.

Martinez, J., J. McLaren, C.E. Tweedie, and A. Darrouzet-Nardi. 2021. Soil enzymes are preferentially associated with larger particles in highly organic Arctic tundra soils. Elementa: Science of the Anthropocene 9:00020. DOI: 10.1525/elementa.2021.00020.

Pedron, S., X. Xu, J.C. Walker, J.C. Ferguson, R.G. Jespersen, J.M. Welker, E.S. Klein, and C.I. Czimczik. 2021. Time-integrated collection of CO2 for 14C analysis from soils. Radiocarbon 63:1303–1319. DOI: 10.1017/RDC.2021.42.

Richert, J.C., A.J. Leffler, D.E. Spalinger, and J.M. Welker. 2021. Snowier winters extend autumn availability of high‐quality forage for caribou in Arctic Alaska. Ecosphere 12:e03617. DOI: 10.1002/ecs2.3617.

Unger, S.L. 2021. Evaluating Changes in Visible to Short-Wave Infrared Spectral Reflectance of Arctic Mosses in Response to Experimental Drying to Find the Best Predictors of Moisture Content. Master’s Thesis, Florida International University.

Virkkala, A., J. Aalto, B.M. Rogers, T. Tagesson, C.C. Treat, S.M. Natali, J.D. Watts, S. Potter, A. Lehtonen, M. Mauritz, E.A.G. Schuur, J. Kochendorfer, D. Zona, W. Oechel, H. Kobayashi, E. Humphreys, M. Goeckede, H. Iwata, P.M. Lafleur, E.S. Euskirchen, S. Bokhorst, M. Marushchak, P.J. Martikainen, B. Elberling, C. Voigt, C. Biasi, O. Sonnentag, F.W. Parmentier, M. Ueyama, G. Celis, V.L. St.Louis, C.A. Emmerton, M. Peichl, J. Chi, J. Järveoja, M.B. Nilsson, S.F. Oberbauer, M.S. Torn, S. Park, H. Dolman, I. Mammarella, N. Chae, R. Poyatos, E. López‐Blanco, T.R. Christensen, M.J. Kwon, T. Sachs, D. Holl, and M. Luoto. 2021. Statistical upscaling of ecosystem CO2 fluxes across the terrestrial tundra and boreal domain: Regional patterns and uncertainties. Global Change Biology 27:4040–4059. DOI: 10.1111/gcb.15659.

2020

Betway, K.R. 2020. Detection and Attribution of Long-Term Vegetation Changes in Northern Alaska. Master’s Thesis, Grand Valley State University.

Buchwal, A., P.F. Sullivan, M. Macias-Fauria, E. Post, I.H. Myers-Smith, J.C. Stroeve, D. Blok, K.D. Tape, B.C. Forbes, P. Ropars, E. Lévesque, B. Elberling, S. Angers-Blondin, J.S. Boyle, S. Boudreau, N. Boulanger-Lapointe, C. Gamm, M. Hallinger, G. Rachlewicz, A. Young, P. Zetterberg, and J.M. Welker. 2020. Divergence of Arctic shrub growth associated with sea ice decline. Proceedings of the National Academy of Sciences 117:33334–33344. 10.1073/pnas.2013311117.

Harris, J.A. 2020. Drivers of Decadal Vegetation Change in Northern Alaska. Master’s Thesis, Grand Valley State University.

May, J.L., R.D. Hollister, K.R. Betway, J.A. Harris, C.E. Tweedie, J.M. Welker, W.A. Gould, S.F. Oberbauer.  2020.  NDVI changes show warming increases the length of the green season at tundra communities in Northern Alaska: A fine-scale analysis.  Frontiers in Plant Science 11(1174): 1-12. DOI: 10.3389/fpls.2020.01174.

Myers­-Smith, I.H., J.T. Kerby, G.K. Phoenix, J.W. Bjerke, H.E. Epstein, J.J. Assmann, C. John, L. Andreu­-Hayles, S. Angers­-Blodin, P.S.A. Beck, L.T. Berner, U.S. Bhatt, A.D. Bjorkman, D. Blok, A. Bryn, C.T. Christiansen, J.H.C. Cornelissen, A.M. Cunliffe, S.C. Elmendorf, B.C. Forbes, S.J. Goetz, R.D. Hollister, R. de Jong, M.M. Loranty, M. Macias­Fauria, K. Maseyk, S. Normand, J. Olofsson, T.C. Parker, F.­J.W. Parmentier, E. Post, G. Schaepman­-Strub, F. Stordal, P.F. Sullivan, H.J.D. Thomas, H. Tømmervik, R. Treharne, C.E. Tweedie, D.A. Walker, M. Wilmking, S. Wipf.  2020.  Complexity revealed in the greening of the Arctic.  Nature Climate Change 10(2): 106-117. DOI: 10.1038/s41558-019-0688-1.

Thomas, H.J.D., A.D. Bjorkman, I.H. Myers-Smith, S.C. Elmendorf, J. Kattge, S. Diaz, M. Vellend, D. Blok, J.H.C. Cornelissen, B.C. Forbes, G.H.R. Henry, R.D. Hollister, S. Normand, J.S. Prevéy, C. Rixen, G. Schaepman-Strub, M. Wilmking, S. Wipf, W.K. Cornwell, P.S.A. Beck, D. Georges, S.J. Goetz, K.C. Guay, N. Rüger, N.A. Soudzilovskaia, M.J. Spasojevic, J.M. Alatalo, H.D. Alexander, A. Anadon-Rosell, S. Angers-Blondin, M. te Beest, L.T. Berner, R.G. Björk, A. Buchwal, A. Buras, M. Carbognani, K.S. Christie, L.S. Collier, E.J. Cooper, B. Elberling, A. Eskelinen, E.R. Frei, O. Grau, P. Grogan, M. Hallinger, M.M.P.D. Heijmans, L. Hermanutz, J.M.G. Hudson, J.F. Johnstone, K. Hülber, M. Iturrate-Garcia, C.M. Iversen, F. Jaroszynska, E. Kaarlejarvi, A. Kulonen, L.J. Lamarque, T.C. Lantz, E. Lévesque, C.J. Little, A. Michelsen, A. Milbau, J. Nabe-Nielsen, S.S. Nielsen, J.M. Ninot, S.F. Oberbauer, J. Olofsson, V.G. Onipchenko, A. Petraglia, S.B. Rumpf, R. Shetti, J.D.M. Speed, K.N. Suding, K.D. Tape, M. Tomaselli, A.J. Trant, U.A. Treier, M. Tremblay, S.E. Venn, T. Vowles, S. Weijers, P.A. Wookey, T.J. Zamin, M. Bahn, B. Blonder, P.M. van Bodegom, B. Bond-Lamberty, G. Campetella, B.E.L. Cerabolini, F.S. Chapin, J.M. Craine, M. Dainese, W.A. Green, S. Jansen, M. Kleyer, P. Manning, Ü. Niinemets, Y. Onoda, W.A. Ozinga, J. Peñuelas, P. Poschlod, P.B. Reich, B. Sandel, B.S. Schamp, S.N. Sheremetiev, and F.T. de Vries. 2020. Global plant trait relationships extend to the climatic extremes of the tundra biome. Nature Communications 11:1351. DOI: 10.1038/s41467-020-15014-4.

 

2019

Assmann, J.J., I.H. Myers‐Smith, A.B. Phillimore, A.D. Bjorkman, R.E. Ennos, J.S. Prevéy, G.H.R. Henry, N.M. Schmidt, R.D. Hollister.  2019.  Local snow melt and temperature—but not regional sea ice—explain variation in spring phenology in coastal Arctic tundra.  Global Change Biology 25(7): 2258-2274. DOI:  10.1111/gcb.14639Press release of the paper for the general audience

Chacon, A.D., M. Velez-Reyes, S.M. Escarzaga, S.A. Vargas-Zesati, and C.E. Tweedie. 2019. Analysis of close-range hyperspectral images of vegetation communities in a high Arctic tundra ecosystem. Page 59 in D. W. Messinger and M. Velez-Reyes, editors. Algorithms, Technologies, and Applications for Multispectral and Hyperspectral Imagery XXV. SPIE, Baltimore, United States.

Natlie, S.M., J.D. Watts, B.M. Rogers, J.M. Welker, et al. 2019. Large loss of CO2 in winter observed across pan-arctic permafrost region. Nature Climate Change.  DOI: 10.1038/s41558-019-0592-8.

Prevéy, J.S., C. Rixen, N. Rüger, T.T. Høye, A.D. Bjorkman, I.H. Myers-Smith, S.C. Elmendorf, I.W. Ashton, N. Cannone, C.L. Chisholm, K. Clark, E.J. Cooper, B. Elberling, A.M. Fosaa, G.H.R. Henry, R.D. Hollister, I.S. Jónsdóttir, K. Klanderud, C.W. Kopp, E. Lévesque, M. Mauritz, U. Molau, S.M. Natali, S.F. Oberbauer, Z.A. Panchen, E. Post, S.B. Rumpf, N.M. Schmidt, E. Schuur, P.R. Semenchuk, J.G. Smith, K.N. Suding, Ø. Totland, T. Troxler, S. Venn, C.-H. Wahren, J.M. Welker, and S. Wipf.  2019.  Warming shortens flowering seasons of tundra plant communities.  Nature Ecology and Evolution 3(1): 45-52. DOI: 10.1038/s41559-018-0745-6.

Thomas, H.J.D., I.H. Myers‐Smith, A.D. Bjorkman, S.C. Elmendorf, D. Blok, J.H.C. Cornelissen, B.C. Forbes, R.D. Hollister, S. Normand, J.S. Prevéy, C. Rixen, G. Schaepman‐Strub, M. Wilmking, S. Wipf, W.K. Cornwell, J. Kattge, S.J. Goetz, K.C. Guay, J.M. Alatalo, A. Anadon‐Rosell, S. Angers‐Blondin, L.T. Berner, R.G. Björk, A. Buchwal, A. Buras, M. Carbognani, K. Christie, L. Siegwart Collier, E.J. Cooper, A. Eskelinen, E.R. Frei, O. Grau, P. Grogan, M. Hallinger, M.M.P.D. Heijmans, L. Hermanutz, J.M.G. Hudson, K. Hülber, M. Iturrate‐Garcia, C.M. Iversen, F. Jaroszynska, J.F. Johnstone, E. Kaarlejärvi, A. Kulonen, L.J. Lamarque, E. Lévesque, C.J. Little, A. Michelsen, A. Milbau, J. Nabe‐Nielsen, S.S. Nielsen, J.M. Ninot, S.F. Oberbauer, J. Olofsson, V.G. Onipchenko, A. Petraglia, S.B. Rumpf, P.R. Semenchuk, N.A. Soudzilovskaia, M.J. Spasojevic, J.D.M. Speed, K.D. Tape, M. te Beest, M. Tomaselli, A. Trant, U.A. Treier, S. Venn, T. Vowles, S. Weijers, T. Zamin, O.K. Atkin, M. Bahn, B. Blonder, G. Campetella, B.E.L. Cerabolini, F.S. Chapin III, M. Dainese, F.T. de Vries, S. Díaz, W. Green, R.B. Jackson, P. Manning, Ü. Niinemets, W.A. Ozinga, J. Peñuelas, P.B. Reich, B. Schamp, S. Sheremetev, and P.M. van Bodegom. 2019. Traditional plant functional groups explain variation in economic but not size‐related traits across the tundra biome. Global Ecology and Biogeography 28:78–95. DOI: 10.1111/geb.12783.

2018

Bjorkman, A.D., I.H. Myers-Smith, S.C. Elmendorf, S. Normand, N. Rüger, P.S.A. Beck, A. Blach-Overgaard, D. Blok, J.H.C. Cornelissen, B.C. Forbes, D. Georges, S.J. Goetz, K.C. Guay, G.H.R. Henry, J. HilleRisLambers, R.D. Hollister, D.N. Karger, J. Kattge, P. Manning, J.S. Prevéy, C. Rixen, G. Schaepman-Strub, H.J.D. Thomas, M. Vellend, M. Wilmking, S. Wipf, M. Carbognani, L. Hermanutz, E. Lévesque, U. Molau, A. Petraglia, N.A. Soudzilovskaia, M.J. Spasojevic, M. Tomaselli, T. Vowles, J.M. Alatalo, H.D. Alexander, A. Anadon-Rosell, S. Angers-Blondin, M. te Beest, L. Berner, R.G. Björk, A. Buchwal, A. Buras, K. Christie, E.J. Cooper, S. Dullinger, B. Elberling, A. Eskelinen, E.R. Frei, O. Grau, P. Grogan, M. Hallinger, K.A. Harper, M.M.P.D. Heijmans, J. Hudson, K. Hülber, M. Iturrate-Garcia, C.M. Iversen, F. Jaroszynska, J.F. Johnstone, R.H. Jørgensen, E. Kaarlejärvi, R. Klady, S. Kuleza, A. Kulonen, L.J. Lamarque, T. Lantz, C.J. Little, J.D.M. Speed, A. Michelsen, A. Milbau, J. Nabe-Nielsen, S.S. Nielsen, J.M. Ninot, S.F. Oberbauer, J. Olofsson, V.G. Onipchenko, S.B. Rumpf, P. Semenchuk, R. Shetti, L.S. Collier, L.E. Street, K.N. Suding, K.D. Tape, A. Trant, U.A. Treier, J.-P. Tremblay, M. Tremblay, S. Venn, S. Weijers, T. Zamin, N. Boulanger-Lapointe, W.A. Gould, D.S. Hik, A. Hofgaard, I.S. Jónsdóttir, J. Jorgenson, J. Klein, B. Magnusson, C. Tweedie, P.A. Wookey, M. Bahn, B. Blonder, P.M. van Bodegom, B. Bond-Lamberty, G. Campetella, B.E.L. Cerabolini, F.S. Chapin, W.K. Cornwell, J. Craine, M. Dainese, F.T. de Vries, S. Díaz, B.J. Enquist, W. Green, R. Milla, Ü. Niinemets, Y. Onoda, J.C. Ordoñez, W.A. Ozinga, J. Penuelas, H. Poorter, P. Poschlod, P.B. Reich, B. Sandel, B. Schamp, S. Sheremetev, and E. Weiher. 2018. Plant functional trait change across a warming tundra biome. Nature 562:57–62. DOI: 10.1038/s41586-018-0563-7Blog about the paper for general audience

Dornelas, M., L.H. Antão, F. Moyes, A.E. Bates, A.E. Magurran, D. Adam, A.A. Akhmetzhanova, W. Appeltans, J.M. Arcos, H. Arnold, N. Ayyappan, G. Badihi, A.H. Baird, M. Barbosa, T.E. Barreto, C. Bässler, A. Bellgrove, J. Belmaker, L. Benedetti-Cecchi, B.J. Bett, A.D. Bjorkman, M. Błażewicz, S.A. Blowes, C.P. Bloch, T.C. Bonebrake, S. Boyd, M. Bradford, A.J. Brooks, J.H. Brown, H. Bruelheide, P. Budy, F. Carvalho, E. Castañeda-Moya, C.A. Chen, J.F. Chamblee, T.J. Chase, L. Siegwart Collier, S.K. Collinge, R. Condit, E.J. Cooper, J.H.C. Cornelissen, U. Cotano, S. Kyle Crow, G. Damasceno, C.H. Davies, R.A. Davis, F.P. Day, S. Degraer, T.S. Doherty, T.E. Dunn, G. Durigan, J.E. Duffy, D. Edelist, G.J. Edgar, R. Elahi, S.C. Elmendorf, A. Enemar, S.K.M. Ernest, R. Escribano, M. Estiarte, B.S. Evans, T.-Y. Fan, F. Turini Farah, L. Loureiro Fernandes, F.Z. Farneda, A. Fidelis, R. Fitt, A.M. Fosaa, G.A. Daher Correa Franco, G.E. Frank, W.R. Fraser, H. García, R. Cazzolla Gatti, O. Givan, E. Gorgone-Barbosa, W.A. Gould, C. Gries, G.D. Grossman, J.R. Gutierréz, S. Hale, M.E. Harmon, J. Harte, G. Haskins, D.L. Henshaw, L. Hermanutz, P. Hidalgo, P. Higuchi, A. Hoey, G. Van Hoey, A. Hofgaard, K. Holeck, R.D. Hollister, R. Holmes, M. Hoogenboom, C. Hsieh, S.P. Hubbell, F. Huettmann, C.L. Huffard, A.H. Hurlbert, N. Macedo Ivanauskas, D. Janík, U. Jandt, A. Jażdżewska, T. Johannessen, J. Johnstone, J. Jones, F.A.M. Jones, J. Kang, T. Kartawijaya, E.C. Keeley, D.A. Kelt, R. Kinnear, K. Klanderud, H. Knutsen, C.C. Koenig, A.R. Kortz, K. Král, L.A. Kuhnz, C.-Y. Kuo, D.J. Kushner, C. Laguionie-Marchais, L.T. Lancaster, C. Min Lee, J.S. Lefcheck, E. Lévesque, D. Lightfoot, F. Lloret, J.D. Lloyd, A. López-Baucells, M. Louzao, J.S. Madin, B. Magnússon, S. Malamud, I. Matthews, K.P. McFarland, B. McGill, D. McKnight, W.O. McLarney, J. Meador, P.L. Meserve, D.J. Metcalfe, C.F.J. Meyer, A. Michelsen, N. Milchakova, T. Moens, E. Moland, J. Moore, C. Mathias Moreira, J. Müller, G. Murphy, I.H. Myers-Smith, R.W. Myster, A. Naumov, F. Neat, J.A. Nelson, M. Paul Nelson, S.F. Newton, N. Norden, J.C. Oliver, E.M. Olsen, V.G. Onipchenko, K. Pabis, R.J. Pabst, A. Paquette, S. Pardede, D.M. Paterson, R. Pélissier, J. Peñuelas, A. Pérez-Matus, O. Pizarro, F. Pomati, E. Post, H.H.T. Prins, J.C. Priscu, P. Provoost, K.L. Prudic, E. Pulliainen, B.R. Ramesh, O. Mendivil Ramos, A. Rassweiler, J.E. Rebelo, D.C. Reed, P.B. Reich, S.M. Remillard, A.J. Richardson, J.P. Richardson, I. van Rijn, R. Rocha, V.H. Rivera-Monroy, C. Rixen, K.P. Robinson, R. Ribeiro Rodrigues, D. de Cerqueira Rossa-Feres, L. Rudstam, H. Ruhl, C.S. Ruz, E.M. Sampaio, N. Rybicki, A. Rypel, S. Sal, B. Salgado, F.A.M. Santos, A.P. Savassi-Coutinho, S. Scanga, J. Schmidt, R. Schooley, F. Setiawan, K.-T. Shao, G.R. Shaver, S. Sherman, T.W. Sherry, J. Siciński, C. Sievers, A.C. da Silva, F. Rodrigues da Silva, F.L. Silveira, J. Slingsby, T. Smart, S.J. Snell, N.A. Soudzilovskaia, G.B.G. Souza, F. Maluf Souza, V. Castro Souza, C.D. Stallings, R. Stanforth, E.H. Stanley, J. Mauro Sterza, M. Stevens, R. Stuart-Smith, Y. Rondon Suarez, S. Supp, J. Yoshio Tamashiro, S. Tarigan, G.P. Thiede, S. Thorn, A. Tolvanen, M. Teresa Zugliani Toniato, Ø. Totland, R.R. Twilley, G. Vaitkus, N. Valdivia, M.I. Vallejo, T.J. Valone, C. Van Colen, J. Vanaverbeke, F. Venturoli, H.M. Verheye, M. Vianna, R.P. Vieira, T. Vrška, C. Quang Vu, L. Van Vu, R.B. Waide, C. Waldock, D. Watts, S. Webb, T. Wesołowski, E.P. White, C.E. Widdicombe, D. Wilgers, R. Williams, S.B. Williams, M. Williamson, M.R. Willig, T.J. Willis, S. Wipf, K.D. Woods, E.J. Woehler, K. Zawada, and M.L. Zettler. 2018. BioTIME: A database of biodiversity time series for the Anthropocene. Global Ecology and Biogeography 27:760–786. DOI: 10.1111/geb.12729.

Jespersen, G., J. Leffler, S. Oberbauer, and J.M. Welker. 2018. Arctic plant ecophysiology and water source utilization in response to altered snow:  isotopic (δ18O and δ2H) evidence for meltwater subsidies to deciduous shrubs. Oecologia  DOI: 10.1007/s00442-018-4196-1.

Prevey, J., C. Rixen, N. Ruger, J.M. Welker, et al. 2018. Warming shortens flowering season in warmer tundra communities.  Nature Ecology and Evolution 3: 45-52. DOI: 10.21963/12961.

Andresen, C.G., C.E. Tweedie, and V.L. Lougheed. 2018. Climate and nutrient effects on Arctic wetland plant phenology observed from phenocams. Remote Sensing of Environment 205: 46-55.  DOI: 10.1016/j.rse.2017.11.013.

May, J.L., T. Parker, S. Unger, and S.F. Oberbauer. 2018. Short-term changes in moisture content drive strong changes in Normalized Difference Vegetation Index and gross primary productivity in four Arctic moss communities. Remote Sensing of Environment 212: 114-120. DOI: 10.1016/j.rse.2018.04.041.

2017

May, J.L., N.C. Healey, H.E. Ahrends, R.D. Hollister, C.E. Tweedie, J.M. Welker, W.A. Gould, S.F. Oberbauer.  2017.  Short-term impacts of the air temperature on greening and senescence in Alaskan Arctic plant tundra habitats.  Remote Sensing 2017, 9(12): 1338 1-19. DOI: 10.3390/rs9121338.

Prevéy, J., M. Vellend, N. Rüger, R.D. Hollister, A.D. Bjorkman, I.H. Myers‐Smith, S.C. Elmendorf, K. Clark, E.J. Cooper, B. Elberling, A.M. Fosaa, G.H.R. Henry, T.T. Høye, I.S. Jónsdóttir, K. Klanderud, E. Lévesque, M. Mauritz, U. Molau, S.M. Natali, S.F. Oberbauer, Z.A. Panchen, E. Post, S.B. Rumpf, N.M. Schmidt, E.A.G. Schuur, P.R. Semenchuk, T. Troxler, J.M. Welker, and C. Rixen. 2017. Greater temperature sensitivity of plant phenology at colder sites: implications for convergence across northern latitudes. Global Change Biology 23:2660–2671. DOI: 10.1111/gcb.13619.

Lara, M.J., D.R. Johnson, C. Andresen, R.D. Hollister, C.E. Tweedie.  2017.  Peak season carbon exchange shifts from a sink to a source following 50+ years of herbivore exclusion in an Arctic tundra ecosystem.  Journal of Ecology 105(1): 122-131. DOI: 10.1111/gcb.13619.

Hobbie J.E., G.R. Shaver, E.B. Rastetter, J.E. Cherry, S.J. Goetz, K.C. Guay, W.A. Gould, and G.W. Kling. 2017. Ecosystem responses to climate change at a Low Arctic and a High Arctic long-term research site. Ambio 46: S160-S173. DOI: 10.1007/s13280-016-0870-x.

Vargas S.A. 2017. Advancing High Spatial and Spectral Resolution Remote Sensing for Observing Plant Community Response to Environmental Variability and Change in the Alaskan Arctic. PhD Dissertation. The University of Texas at El Paso.

2016

Abbott, B.W., J.B. Jones, E.A.G. Schuur, F.S. Chapin Iii, W.B. Bowden, M.S. Bret-Harte, H.E. Epstein, M.D. Flannigan, T.K. Harms, T.N. Hollingsworth, M.C. Mack, A.D. McGuire, S.M. Natali, A.V. Rocha, S.E. Tank, M.R. Turetsky, J.E. Vonk, K.P. Wickland, G.R. Aiken, H.D. Alexander, R.M.W. Amon, B.W. Benscoter, Y. Bergeron, K. Bishop, O. Blarquez, Ben Bond-Lamberty, A.L. Breen, I. Buffam, Y. Cai, C. Carcaillet, S.K. Carey, J.M. Chen, H.Y.H. Chen, T.R. Christensen, L.W. Cooper, J.H.C. Cornelissen, W.J. De Groot, T.H. DeLuca, E. Dorrepaal, N. Fetcher, J.C. Finlay, B.C. Forbes, N.H.F. French, S. Gauthier, M.P. Girardin, S.J. Goetz, J.G. Goldammer, L. Gough, P. Grogan, L. Guo, P.E. Higuera, L. Hinzman, F.S. Hu, G. Hugelius, E.E. Jafarov, R. Jandt, J.F. Johnstone, Jan Karlsson, E.S. Kasischke, G. Kattner, R. Kelly, F. Keuper, G.W. Kling, P. Kortelainen, J. Kouki, P. Kuhry, H. Laudon, I. Laurion, R.W. Macdonald, P.J. Mann, P.J. Martikainen, J.W. McClelland, U. Molau, S.F. Oberbauer, D. Olefeldt, D. Paré, M.-A. Parisien, S. Payette, C. Peng, O.S. Pokrovsky, E.B. Rastetter, P.A. Raymond, M.K. Raynolds, G. Rein, J.F. Reynolds, M. Robards, B.M. Rogers, C. Schädel, K. Schaefer, I.K. Schmidt, A. Shvidenko, J. Sky, R.G.M. Spencer, G. Starr, R.G. Striegl, R. Teisserenc, L.J. Tranvik, T. Virtanen, J.M. Welker, and S. Zimov. 2016. Biomass offsets little or none of permafrost carbon release from soils, streams, and wildfire: an expert assessment. Environmental Research Letters 11:034014. DOI: 10.1088/1748-9326/11/3/034014.

Barrett, R.T. 2016. Detection and Attribution of Long-Term Vegetation Changes in Northern Alaska. Master's Thesis. Grand Valley State University.

Barrett, R.T., and R.D. Hollister. 2016. Arctic plants are capable of sustained responses to long-term warming. Polar Research 35:25405. DOI: 10.3402/polar.v35.25405.

Blanc-Betes, E., J.M. Welker, N.C. Sturchio, J.P. Chanton, and M.A. Gonzalez-Meler. 2016. Winter precipitation and snow accumulation drive the methane sink or source strength of Arctic tussock tundra. Global Change Biology 22:2818–2833. DOI: 10.1111/gcb.13242.

Geml, J., T.A. Semenova, L.N. Morgado, and J.M. Welker. 2016. Changes in composition and abundance of functional groups of arctic fungi in response to long-term summer warming. Biology Letters 12:20160503. DOI: 10.1098/rsbl.2016.0503.

Healey, N.C., S.F. Oberbauer, and R.D. Hollister. 2016. Examination of surface temperature modification by Open Top Chambers along moisture and latitudinal gradients in Arctic Alaska using thermal infrared photography. Remote Sensing 8:54. DOI: 10.3390/rs8010054.

Leffler, A.J., E.S. Klein, S.F. Oberbauer, and J.M. Welker. 2016. Coupled long-term summer warming and deeper snow alters species composition and stimulates gross primary productivity in tussock tundra. Oecologia 181:287–297. DOI: 10.1007/s00442-015-3543-8.

Morgado, L.N., T.A. Semenova, J.M. Welker, M.D. Walker, E. Smets, and J. Geml. 2016. Long‐term increase in snow depth leads to compositional changes in arctic ectomycorrhizal fungal communities. Global Change Biology 22:3080–3096. DOI: 10.1111/gcb.13294.

Ricketts, M.P., R.S. Poretsky, J.M. Welker, and M.A. Gonzalez-Meler. 2016. Soil bacterial community and functional shifts in response to altered snowpack in moist acidic tundra of northern Alaska. Soil 2:459–474. DOI: 10.5194/soil-2-459-2016.

Walker, D.A., A.L. Breen, L.A. Druckenmiller, L.W. Wirth, W. Fisher, M.K. Raynolds, J. Šibík, M.D. Walker, S. Hennekens, K. Boggs, T. Boucher, M. Buchhorn, H. Bültmann, D.J. Cooper, F.J.A. Daniëls, S.J. Davidson, J.J. Ebersole, S.C. Elmendorf, H.E. Epstein, W.A. Gould, R.D. Hollister, C.M. Iversen, M.T. Jorgenson, A. Kade, M.T. Lee, W.H. MacKenzie, R.K. Peet, J.L. Peirce, U. Schickhoff, V.L. Sloan, S.S. Talbot, C.E. Tweedie, S. Villarreal, P.J. Webber, and D. Zona. 2016. The Alaska Arctic Vegetation Archive (AVA-AK). Phytocoenologia 46:221–229. DOI: 10.1127/phyto/2016/0128.

2015

Barrett, R.T.S., R.D. Hollister, S.F. Oberbauer, and C.E. Tweedie. 2015. Arctic plant responses to changing abiotic factors in northern Alaska. American Journal of Botany 102:2020–2031. DOI: 10.3732/ajb.1400535.

Botting, T.F. 2015. Documenting Annual Differences in Vegetation Cover, Height and Diversity near Barrow, Alaska. Master's Thesis. Grand Valley State University.

Elmendorf, S.C., G.H.R. Henry, R.D. Hollister, A.M. Fosaa, W.A. Gould, L. Hermanutz, A. Hofgaard, I.S. Jónsdóttir, J.C. Jorgenson, E. Lévesque, B. Magnusson, U. Molau, I.H. Myers-Smith, S.F. Oberbauer, C. Rixen, C.E. Tweedie, and M.D. Walker. 2015. Experiment, monitoring, and gradient methods used to infer climate change effects on plant communities yield consistent patterns. Proceedings of the National Academy of Sciences 112:448–452. DOI: 10.1073/pnas.1410088112.

Geml, J., L.N. Morgado, T.A. Semenova, J.M. Welker, M.D. Walker, and E. Smets. 2015. Long-term warming alters richness and composition of taxonomic and functional groups of arctic fungi. FEMS Microbiology Ecology 91:fiv095. DOI: 10.1093/femsec/fiv095.

Hollister, R.D., J.L. May, K.S. Kremers, C.E. Tweedie, S.F. Oberbauer, J.A. Liebig, T.F. Botting, R.T. Barrett, and J.L. Gregory. 2015. Warming experiments elucidate the drivers of observed directional changes in tundra vegetation. Ecology and Evolution 5:1881–1895. DOI: 10.1002/ece3.1499.

Khorsand Rosa, R., S.F. Oberbauer, G. Starr, I. Parker La Puma, E. Pop, L. Ahlquist, and T. Baldwin. 2015. Plant phenological responses to a long‐term experimental extension of growing season and soil warming in the tussock tundra of Alaska. Global Change Biology 21:4520–4532. DOI: 10.1111/gcb.13040.

Klein, E.S., J.E. Cherry, J. Young, D. Noone, A.J. Leffler, and J.M. Welker. 2015. Arctic cyclone water vapor isotopes support past sea ice retreat recorded in Greenland ice. Scientific Reports 5:10295. DOI: 10.1038/srep10295.

Kremers, K.S., R.D. Hollister, and S.F. Oberbauer. 2015. Diminished response of arctic plants to warming over time. Plos One 10:e0116586. DOI: 10.1371/journal.pone.0116586.

Laney, C.M., D.D. Pennington, and C.E. Tweedie. 2015. Filling the gaps: sensor network use and data‐sharing practices in ecological research. Frontiers in Ecology and the Environment 13:363–368. DOI: 10.1890/140341.

Lara, M.J., A.D. McGuire, E.S. Euskirchen, C.E. Tweedie, K.M. Hinkel, A.N. Skurikhin, V.E. Romanovsky, G. Grosse, W.R. Bolton, and H. Genet. 2015. Polygonal tundra geomorphological change in response to warming alters future CO2 and CH4 flux on the Barrow Peninsula. Global Change Biology 21:1634–1651. DOI: 10.1111/gcb.12757.

Morgado, L.N., T.A. Semenova, J.M. Welker, M.D. Walker, E. Smets, and J. Geml. 2015. Summer temperature increase has distinct effects on the ectomycorrhizal fungal communities of moist tussock and dry tundra in Arctic Alaska. Global Change Biology 21:959–972. DOI: 10.1111/gcb.12716.

Pattison, R.R., J.C. Jorgenson, M.K. Raynolds, and J.M. Welker. 2015. Trends in NDVI and tundra community composition in the Arctic of NE Alaska between 1984 and 2009. Ecosystems 18:707–719. DOI: 10.1007/s10021-015-9858-9.

Semenova, T.A., L.N. Morgado, J.M. Welker, M.D. Walker, E. Smets, and J. Geml. 2015. Long‐term experimental warming alters community composition of ascomycetes in Alaskan moist and dry arctic tundra. Molecular Ecology 24:424–437. DOI: 10.1111/mec.13045.

2014

Andresen, C.G., S.A. Vargas, V.L. Lougheed, and C.E. Tweedie. 2014. Kite-based Aerial Photography (KAP): A low cost-effective tool for wetland research. Wetland Science and Practice 2014:28–31.

Gangodagamage, C., J.C. Rowland, S.S. Hubbard, S.P. Brumby, A.K. Liljedahl, H. Wainwright, C.J. Wilson, G.L. Altmann, B. Dafflon, J. Peterson, C. Ulrich, C.E. Tweedie, and S.D. Wullschleger. 2014. Extrapolating active layer thickness measurements across Arctic polygonal terrain using LiDAR and NDVI data sets. Water Resources Research 50:6339–6357. DOI: 10.1002/2013WR014283.

Gregory, J.L. 2014. Structural Comparison of Arctic Plant Communities Across the Landscape and with Experimental Warming in Northern Alaska. Master's Thesis. Grand Valley State University.

Healey, N., S.F. Oberbauer, H. Ahrends, D. Dierick, J. Welker, A. Leffler, R.D. Hollister, S. Vargas, and C.E. Tweedie. 2014. A mobile instrumented sensor platform for long-term terrestrial ecosystem analysis: An example application in an arctic tundra ecosystem. Journal of Environmental Informatics 24:1–10. DOI: 10.3808/jei.201400278.

Pattison, R.R., and J.M. Welker. 2014. Differential ecophysiological response of deciduous shrubs and a graminoid to long-term experimental snow reductions and additions in moist acidic tundra, Northern Alaska. Oecologia 174:339–350. DOI: 10.1007/s00442-013-2777-6.

Shaver, G.R., J.A. Laundre, M.S. Bret-Harte, F.S. Chapin, J.A. Mercado-Díaz, A.E. Giblin, L. Gough, W.A. Gould, S.E. Hobbie, G.W. Kling, M.C. Mack, J.C. Moore, K.J. Nadelhoffer, E.B. Rastetter, and J.P. Schimel. 2014. Terrestrial Ecosystems at Toolik Lake, Alaska: Alaska's Changing Arctic: Ecological Consequences for Tundra, Streams, and Lakes (eds: Hobbie J.E. and Kling G.W.) pp. 90-142.

2013

Oberbauer, S.F., S.C. Elmendorf, T.G. Troxler, R.D. Hollister, A.V. Rocha, M.S. Bret-Harte, M.A. Dawes, A.M. Fosaa, G.H.R. Henry, T.T. Høye, F.C. Jarrad, I.S. Jónsdóttir, K. Klanderud, J.A. Klein, U. Molau, C. Rixen, N.M. Schmidt, G.R. Shaver, R.T. Slider, Ø. Totland, C.-H. Wahren, and J.M. Welker. 2013. Phenological response of tundra plants to background climate variation tested using the International Tundra Experiment. Philosophical Transactions of the Royal Society B 368(1624): 20120481. DOI: 10.1098/rstb.2012.0481.

Bokhorst S., A. Huiskes, R. Aerts, P. Convey, E.J. Cooper, L. Dalen, B. Erschbamer, J. Gudmundsson, A. Hofgaard, R.D. Hollister, J. Johnstone, I.S. Jónsdóttir, M. Lebouvier, B. Van De Vijver, C.-H. Wahren, And E. Dorrepaal. 2013. Variable temperature effects of Open Top Chambers at polar and alpine sites explained by irradiance and snow depth. Global Change Biology 19(1): 64-74. DOI: 10.1111/gcb.12028.

Anderson-Smith M. 2013. Remotely-Sensed Spectral Data Linked to Increasing Shrub Abundance and Greater Growing Season Carbon Uptake in Alaskan Arctic Tundra. M. S. Thesis. University of Alaska Anchorage. Anchorage, AK, USA

Gamon J.A., K.F. Huemmrich, R.S. Stone, and C.E. Tweedie. 2013. Spatial and temporal variation in primary productivity (NDVI) of coastal Alaskan tundra: Decreased vegetation growth following earlier snowmelt. Remote Sensing of Environment 129: 144-153.  DOI: 10.1016/j.rse.2012.10.030.

Hubbard S.S., C. Gangodagamage, B. Dafflon, H. Wainwright, J. Peterson, A. Gusmeroli, C. Ulrich, Y. Wu, C. Wilson, J. Rowland, C. Tweedie, and S.D. Wullschleger. 2013. Quantifying and relating land-surface and subsurface variability in permafrost environments using LiDAR and surface geophysical datasets. Hydrogeology Journal 21(1): 149-169. DOI: 10.1007/s10040-012-0939-y.

Huemmrich K.F., J.A. Gamon, C.E. Tweedie, P.K.E. Campbell, D.R. Landis, and E.M. Middleton. 2013. Arctic tundra vegetation functional types based on photosynthetic physiology and optical properties. IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing 6(2): 265-275. DOI: 10.1109/JSTARS.2013.2253446.

Leffler A.J. and J.M. Welker. 2013. Long-term increases in snow pack elevate leaf N and photosynthesis in Salix arctica: Responses to a snow fence experiment in the High Arctic of NW Greenland. Environmental Research Letters 8(2): 025023 1-10. DOI: 10.1088/1748-9326/8/2/025023.

Schaeffer S.M., E. Sharp, J.P. Schimel, and J.M. Welker. 2013. Soil-plant N processes in a High Arctic ecosystem, NW Greenland are altered by long-term experimental warming and higher rainfall. Global Change Biology 19(11): 3529-3539. DOI: 10.1111/gcb.12318.

Sharp E.D., P.F. Sullivan, H. Steltzer, A.Z. Csank, and J.M. Welker. 2013. Complex carbon cycle responses to multi-level warming and supplemental summer rain in the high Arctic. Global Change Biology 19(6): 1780-1792. DOI: 10.1111/gcb.12149.

2012

May, J.L. and R.D. Hollister. 2012. Validation of a simplified point frame method to detect change in tundra vegetation. Polar Biology 35(12): 1815-1823. DOI: 10.1007/s00300-012-1224-1.

Elmendorf, S.C., G.H.R. Henry, R.D. Hollister, R.G. Björk, N. Boulanger-Lapointe, E.J. Cooper, J.H.C. Cornelissen, T.A. Day, E. Dorrepaal, T.G. Elumeeva, M. Gill, W.A. Gould, J. Harte, D.S. Hik, A. Hofgaard, D.R. Johnson, J.F. Johnstone, I.S. Jónsdóttir, J.C. Jorgenson, K. Klanderud, J.A. Klein, S. Koh, G. Kudo, M. Lara, E. Lévesque, B. Magnússon, J.L. May, J.A. Mercado-Díaz, A. Michelsen, U. Molau, I.H. Myers-Smith, S.F. Oberbauer, V.G. Onipchenko, C. Rixen, N.M. Schmidt, G.R. Shaver, M.J. Spasojevic, Þ.E. Þórhallsdóttir, A. Tolvanen, T. Troxler, C.E. Tweedie, S. Villareal, C.-H. Wahren, X. Walker, P.J. Webber, J.M. Welker, S. Wipf. 2012. Plot-scale evidence of tundra vegetation change and links to recent summer warming. Nature Climate Change 2(6): 453–457. DOI: 10.1038/nclimate1465.

Elmendorf, S.C., G.H.R. Henry, R.D. Hollister, R.G. Björk, A.D. Bjorkman, T.V. Callaghan, L.S. Collier, E.J. Cooper, J.H.C. Cornelissen, T.A. Day, A.M. Fosaa, W.A. Gould, J. Grétarsdóttir, J. Harte, L. Hermanutz, D.S. Hik, A. Hofgaard, F. Jarrad, I.S. Jónsdóttir, F. Keuper, K. Klanderud, J.A. Klein, S. Koh, G. Kudo, S.I. Lang, V. Loewen, J.L. May, J. Mercado, A. Michelsen, U. Molau, I.H. Myers-Smith, S.F. Oberbauer, S. Pieper, E. Post, C. Rixen, C.H. Robinson, N.M. Schmidt, G.R. Shaver, A. Stenström, A. Tolvanen, Ø. Totland, T. Troxler, C.-H. Wahren, P.J. Webber, J.M. Welker, P.A. Wookey. 2012. Global assessment of experimental climate warming on tundra vegetation: heterogeneity over space and time. Ecology Letters 15(2): 164–175. DOI: 10.1111/j.1461-0248.2011.01716.x.

Villarreal, S., R.D. Hollister, D.R. Johnson, M.J. Lara, P.J. Webber, C.E. Tweedie. 2012 Tundra vegetation change near Barrow, Alaska (1972-2010). Environmental Research Letters 7(015508): 1-10. DOI: 10.1088/1784-9326/7/1/015508.

Timling I., A. Dahlberg, D.A. Walker, M. Gardes, J.Y. Charcosset, J.M. Welker, and D.L. Taylor. 2012. Distribution and drivers of ectomycorrhizal fungal communities across the North American Arctic. Ecosphere 3(11): 111 1-25. DOI: 10.1890/ES12-00217.1.

Tweedie C.E., A. Aguirre, R.P. Cody, S.A. Vargas, and J. Brown. 2012. Spatial and temporal dynamics of erosion along the Elson Lagoon coastline near Barrow, Alaska (2002-2011). Proceedings of the Tenth International Conference on Permafrost 1: 425-430. DOI: 10.1657/1938-4246-43.1.95.

Walker D.A., U.S. Bhatt, T.V. Callaghan, J.C. Comiso, H.E. Epstein, B.C. Forbes, M. Gill, W.A. Gould, G.H.R. Henry, G.J. Jia, S.V. Kokelj, T.C. Lantz, S.F. Oberbauer, J.E. Pinzon, M.K. Raynolds, G.R. Shaver, C.J. Tucker, C.E. Tweedie, and P.J. Webber. 2012. Vegetation: Special supplement. Bulletin of the American Meterological Society 92: 89-95.

2011

Liljedahl, A.K., L.D. Hinzman, Y. Harazono, D. Zona, C.E. Tweedie, R.D. Hollister, R. Engstrom, and W.C. Oechel. 2011. Nonlinear controls on evapotranspiration in arctic coastal wetlands. Biogeosciences 8(11): 3375–3389. DOI: 10.5194/bg-8-3375-2011.

May, J.L. 2011. Documenting Tundra Plant Community Change in Northern Alaska. Master's Thesis. Grand Valley State University.

Gallegos I., A.Q. Gates, and C. Tweedie. 2011. DaProS: A data property specification tool to capture scientific sensor data properties. Advances in Conceptual Modeling: Applications and Challenges 6413: 232-241. DOI: 10.1007/978-3-642-16385-2_29.

Gonzalez, L. 2011. Development of a Low-Cost Network of Webcams for Monitoring Plant Phenology in a Chihuahuan Desert Shrubland. Master's Thesis. University of Texas at El Paso.

Mercado-Diáz, J.A. 2011. Plant Community Responses of the Alaskan Arctic Tundra to Environmental and Experimental Changes in Climate. Master's Thesis University of Puerto Rico.

Rogers, M.C., P.F. Sullivan, and J.M. Welker. 2011. Evidence of nonlinearity in the response of net ecosystem CO2 exchange to increasing levels of winter snow depth in the High Arctic of Northwest Greenland. Arctic Antarctic and Alpine Research 43:95–106. DOI: 10.1657/1938-4246-43.1.95.

2010

Shiklomanov, N.I., D.A. Streletskiy, F.E. Nelson, R.D. Hollister, V.E. Romanovsky, E. Vladimir, C.E. Tweedie, J.G. Bockheim, and J. Brown. 2010. Decadal variations of active-layer thickness in moisture-controlled landscapes, Barrow, Alaska. Journal of Geophysical Research-Biogeosciences (115): G00I04. DOI: 10.1029/2009JG001248.

Hollister, R.D. and K.J. Flaherty. 2010. Above and belowground plant biomass response to experimental warming in Northern Alaska. Applied Vegetation Science 13(3): 378–387. DOI: 10.1 111 IJ.1654-109X.20W.01079.X.

Huemmrich, K.F., J.A. Gamon, C.E. Tweedie, S.F. Oberbauer, G. Kinoshita, S. Houston, A. Kuchy, R.D. Hollister, H. Kwon, M. Mano, Y. Harazono, P.J. Webber, and W.C. Oechel. 2010. Remote sensing of tundra gross ecosystem productivity and light use efficiency under varying temperature and moisture conditions. Remote sensing of Environment 114(3):481-489. DOI: 0.1016/j.rse.2009.10.003.

Bhatt, U.S., D.A. Walker, M.K. Raynolds, J.C. Comiso, H.E. Epstein, G. Jia, R. Gens, J.E. Pinzon, C.J. Tucker, C.E. Tweedie, and P.J. Webber. 2010. Circumpolar Arctic tundra vegetation change is linked to sea ice decline. Earth Interactions 14:1–20. DOI: 10.1175/2010EI315.1.

Walker D.A., U.S. Bhatt, J.C. Comiso, H.E. Epstein, W.A. Gould, G.H.R. Henry, G.J. Jia, S.V. Kokelj , T.C. Lantz, J.A. Mercado-Diáz, J.E. Pinzon, M.K. Raynolds, G.R. Shaver, C.J. Tucker, C.E. Tweedie, and P.J. Webber. 2010. The State of the Climate in 2010: 5. The Arctic e. Land. Bulletin of the American Meterological Society 92(6): S150-S152.



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