Drivers of soil temperature variation in alpine lichen heaths and shrub vegetation during the summer

References

• Aalto, J., P. C. le Roux, and M. Luoto. 2013. Vegetation mediates soil temperature and moisture in Arctic-alpine environments. Arctic, Antarctic, and Alpine Research 45, no. 4: 429–13. doi:10.1657/1938-4246-45.4.429.
   Web of Science ®Google Scholar
• Aalto, J., D. Scherrer, J. Lenoir, A. Guisan, and M. Luoto. 2018. Biogeophysical controls on soil-atmosphere thermal differences: Implications on warming Arctic ecosystems. Environmental Research Letters 13, no. 7: 074003. doi:10.1088/1748-9326/aac83e.
   Web of Science ®Google Scholar
• Aartsma, P., J. Asplund, A. Odland, S. Reinhardt, and H. Renssen. 2020. Surface albedo of alpine lichen heaths and shrub vegetation. Arctic, Antarctic, and Alpine Research 52, no. 1: 312–22. doi:10.1080/15230430.2020.1778890.
   Web of Science ®Google Scholar
• Aartsma, P., J. Asplund, A. Odland, S. Reinhardt, and H. Renssen. 2021. Microclimatic comparison of lichen heaths and shrubs: Shrubification generates atmospheric heating but subsurface cooling during the growing season. Biogeosciences 18, no. 5: 1577–99. doi:10.5194/bg-18-1577-2021.
   Google Scholar
• Aguirre, D., A. E. Benhumea, and J. R. McLaren. 2021. Shrub encroachment affects tundra ecosystem properties through their living canopy rather than increased litter inputs. Soil Biology & Biochemistry 153: 108121. doi:10.1016/j.soilbio.2020.108121.
   Web of Science ®Google Scholar
• Barrere, M., F. Domine, B. Decharme, S. Morin, V. Vionnet, and M. Lafaysse. 2017. Evaluating the performance of coupled snow–soil models in SURFEXv8 to simulate the permafrost thermal regime at a high Arctic site. Geoscientific Model Development 10, no. 9: 3461–79. doi:10.5194/gmd-10-3461-2017.
   Web of Science ®Google Scholar
• Barry, R. G. 2008. Mountain weather and climate. 3rd ed. Cambridge: Cambridge University Press.
   Google Scholar
• Bates, D., M. Mächler, B. Bolker, and S. Walker. 2015. Fitting linear mixed-effects models using lme4. Journal of Statistical Software 67, no. 1: 48. doi:10.18637/jss.v067.i01.
   Web of Science ®Google Scholar
• Beer, C., P. Porada, A. Ekici, and M. Brakebusch. 2018. Effects of short-term variability of meteorological variables on soil temperature in permafrost regions. Cryosphere 12, no. 2: 741–57. doi:10.5194/tc-12-741-2018.
   Web of Science ®Google Scholar
• Beringer, J., A. H. Lynch, F. S. Chapin, M. Mack, and G. B. Bonan. 2001. The representation of Arctic soils in the land surface model: The importance of mosses. Journal of Climate 14, no. 15: 3324–35. doi:10.1175/1520-0442(2001)014</>TROASI>2.0.CO;2.
   Web of Science ®Google Scholar
• Berner, L. T., R. Massey, P. Jantz, B. C. Forbes, M. Macias-Fauria, I. Myers-Smith, T. Kumpula, et al. 2020. Summer warming explains widespread but not uniform greening in the Arctic tundra biome. Nature Communications 11, no. 1: 1–12. doi:10.1038/s41467-020-18479-5.
   PubMed Web of Science ®Google Scholar
• Bjerke, J. W. 2011. Winter climate change: Ice encapsulation at mild subfreezing temperatures kills freeze-tolerant lichens. Environmental and Experimental Botany 72, no. 3: 404–8. doi:10.1016/j.envexpbot.2010.05.014.
   Web of Science ®Google Scholar
• Blok, D., M. M. P. D. Heijmans, G. Schaepman-Strub, A. V. Kononov, T. C. Maximov, and F. Berendse. 2010. Shrub expansion may reduce summer permafrost thaw in Siberian tundra. Global Change Biology 16, no. 4: 1296–305. doi:10.1111/j.1365-2486.2009.02110.x.
   Web of Science ®Google Scholar
• Bonfils, C. J. W., T. J. Phillips, D. M. Lawrence, P. Cameron-Smith, W. J. Riley, and Z. M. Subin. 2012. On the influence of shrub height and expansion on northern high latitude climate. Environmental Research Letters 7, no. 1: 015503. doi:10.1088/1748-9326/7/1/015503.
   Web of Science ®Google Scholar
• Chagnon, C., and S. Boudreau. 2019. Shrub canopy induces a decline in lichen abundance and diversity in Nunavik (Québec, Canada). Arctic, Antarctic, and Alpine Research 51, no. 1: 521–32. doi:10.1080/15230430.2019.1688751.
   Web of Science ®Google Scholar
• Chapin, F. S., M. Sturm, M. C. Serreze, J. P. McFadden, J. R. Key, A. H. Lloyd, A. D. McGuire, et al. 2005. Role of land-surface changes in Arctic summer warming. Science 310, no. 5748: 657–60. doi:10.1126/science.1117368.
   PubMed Web of Science ®Google Scholar
• Cornelissen, J. H. C., T. V. Callaghan, J. M. Alatalo, A. Michelsen, E. Graglia, A. E. Hartley, D. S. Hik, et al. 2001. Global change and Arctic ecosystems: Is lichen decline a function of increases in vascular plant biomass? Journal of Ecology 89, no. 6: 984–94. doi:10.1111/j.1365-2745.2001.00625.x.
   Web of Science ®Google Scholar
• Dahl, E. 1956. Rondane. Mountain vegetation in South Norway and its relation to the environment. Skrifter utgittav det Norske Videnskaps-Akademi i Oslo, Mathematisk-Naturvidenskapelig Klasse. 3: 1–374.
   Google Scholar
• Ford, K. R., A. K. Ettinger, J. D. Lundquist, M. S. Raleigh, and J. H. R. Lambers. 2013. Spatial heterogeneity in ecologically important climate variables at coarse and fine scales in a high-snow mountain landscape. PLoS ONE 8, no. 6: e65008. doi:10.1371/journal.pone.0065008.
   PubMed Web of Science ®Google Scholar
• Fraser, R. H., T. C. Lantz, I. Olthof, S. V. Kokelj, and R. A. Sims. 2014. Warming-induced shrub expansion and lichen decline in the Western Canadian Arctic. Ecosystems 17, no. 7: 1151–68. doi:10.1007/s10021-014-9783-3.
   Web of Science ®Google Scholar
• Frost, G. V., H. E. Epstein, D. A. Walker, G. Matyshak, and K. Ermokhina. 2018. Seasonal and long-term changes to active-layer temperatures after tall shrubland expansion and succession in Arctic tundra. Ecosystems 21, no. 3: 507–20. doi:10.1007/s10021-017-0165-5.
   Web of Science ®Google Scholar
• Gaffney, P. P. J., M. H. Hancock, M. A. Taggart, and R. Andersen. 2020. Restoration of afforested peatland: Immediate effects on aquatic carbon loss. Science of the Total Environment 742: 140594. doi:10.1016/j.scitotenv.2020.140594.
   PubMed Web of Science ®Google Scholar
• Gavazov, K. S. 2010. Dynamics of alpine plant litter decomposition in a changing climate. Plant and Soil 337, no. 1–2: 19–32. doi:10.1007/s11104-010-0477-0.
   Web of Science ®Google Scholar
• Gold, W. G., K. A. Glew, and L. G. Dickson. 2001. Functional influences of cryptobiotic surface crusts in an alpine tundra basin of the Olympic Mountains, Washington, USA. Northwest Science 75, no. 3: 315–26.
   Web of Science ®Google Scholar
• Graham, E. A., P. W. Rundel, W. Kaiser, Y. Lam, M. Stealey, and E. M. Yuen. 2012. Fine-scale patterns of soil and plant surface temperatures in an alpine fellfield habitat, White Mountains, California. Arctic, Antarctic, and Alpine Research 44, no. 3: 288–95. doi:10.1657/1938-4246-44.3.288.
   Web of Science ®Google Scholar
• Grünberg, I., E. J. Wilcox, S. Zwieback, P. Marsh, and J. Boike. 2020. Linking tundra vegetation, snow, soil temperature, and permafrost. Biogeosciences 17, no. 16: 4261–79. doi:10.5194/bg-17-4261-2020.
   Web of Science ®Google Scholar
• Hanssen-Bauer, I., H. Drange, E. J. Førland, L. A. Roald, K. Y. Børsheim, H. Hisdal, D. Lawrence, et al. 2017. Climate in Norway 2100 - a knowledge base for climate adaptation. Oslo: NCCS.
   Google Scholar
• Heijmans, M. M., R. Í. Magnússon, M. J. Lara, G. V. Frost, I. H. Myers-Smith, J. van Huissteden, M. T. Jorgenson, et al. 2022. Tundra vegetation change and impacts on permafrost. Nature Reviews Earth & Environment 3, no. 1: 68–84. doi:10.1038/s43017-021-00233-0.
   Google Scholar
• Hobbie, S. E. 1996. Temperature and plant species control over litter decomposition in Alaskan tundra. Ecological Monographs 66, no. 4: 503–22. doi:10.2307/2963492.
   Web of Science ®Google Scholar
• Hothorn, T., F. Bretz, and P. Westfall. 2008. Simultaneous inference in general parametric models. Biometrical Journal 50, no. 3: 346–63. doi:10.1002/bimj.200810425.
   PubMed Web of Science ®Google Scholar
• Hursh, A., A. Ballantyne, L. Cooper, M. Maneta, J. Kimball, and J. Watts. 2017. The sensitivity of soil respiration to soil temperature, moisture, and carbon supply at the global scale. Global Change Biology 23, no. 5: 2090–103. doi:10.1111/gcb.13489.
   PubMed Web of Science ®Google Scholar
• Joly, K., R. R. Jandt, and D. R. Klein. 2009. Decrease of lichens in Arctic ecosystems: The role of wildfire, caribou, reindeer, competition and climate in north‐western Alaska. Polar Research 28, no. 3: 433–42. doi:10.1111/j.1751-8369.2009.00113.x.
   Web of Science ®Google Scholar
• Klein, D. R., and M. Shulski. 2011. The role of lichens, reindeer, and climate in ecosystem change on a Bering Sea island. Arctic 64, no. 3: 353–61. doi:10.14430/arctic4124.
   Web of Science ®Google Scholar
• Körner, C., and E. Hiltbrunner. 2017. The 90 ways to describe plant temperature. Perspectives in Plant Ecology, Evolution and Systematics 30: 16–21. doi:10.1016/j.ppees.2017.04.004.
   Web of Science ®Google Scholar
• Lafleur, P. M., and E. R. Humphreys. 2018. Tundra shrub effects on growing season energy and carbon dioxide exchange. Environmental Research Letters 13, no. 5: 055001. doi:10.1088/1748-9326/aab863.
   Web of Science ®Google Scholar
• Lawrence, D. M., and S. C. Swenson. 2011. Permafrost response to increasing Arctic shrub abundance depends on the relative influence of shrubs on local soil cooling versus large-scale climate warming. Environmental Research Letters 6, no. 4: 045504. doi:10.1088/1748-9326/6/4/045504.
   Web of Science ®Google Scholar
• Lembrechts, J. J., J. Aalto, M. B. Ashcroft, P. De Frenne, M. Kopecký, J. Lenoir, M. Luoto, et al. 2020. SoilTemp: A global database of near-surface temperature. Global Change Biology 26, no. 11: 6616–29. doi:10.1111/gcb.15123.
   PubMed Web of Science ®Google Scholar
• Loranty, M. M., B. W. Abbott, D. Blok, T. A. Douglas, H. E. Epstein, B. C. Forbes, B. M. Jones, et al. 2018. Reviews and syntheses: Changing ecosystem influences on soil thermal regimes in northern high-latitude permafrost regions. Biogeosciences 15, no. 17: 5287–313. doi:10.5194/bg-15-5287-2018.
   Web of Science ®Google Scholar
• Macander, M. J., P. R. Nelson, T. W. Nawrocki, G. V. Frost, K. M. Orndahl, E. C. Palm, A. F. Wells, et al. 2022. Time-series maps reveal widespread change in plant functional type cover across Arctic and boreal Alaska and Yukon. Environmental Research Letters 17, no. 5: 054042. doi:10.1088/1748-9326/ac6965.
   Web of Science ®Google Scholar
• Macias-Fauria, M., T. Helle, A. Niva, H. Posio, and M. Timonen. 2008. Removal of the lichen mat by reindeer enhances tree growth in a northern Scots pine forest. Canadian Journal of Forest Research 38, no. 12: 2981–93. doi:10.1139/X08-135.
   Google Scholar
• Maliniemi, T., J. Kapfer, P. Saccone, A. Skog, and R. Virtanen. 2018. Long‐term vegetation changes of treeless heath communities in northern Fennoscandia: Links to climate change trends and reindeer grazing. Journal of Vegetation Science 29, no. 3: 469–79. doi:10.1111/jvs.12630.
   Web of Science ®Google Scholar
• Mekonnen, Z. A., W. J. Riley, L. T. Berner, N. J. Bouskill, M. S. Torn, G. Iwahana, A. L. Breen, et al. 2021. Arctic tundra shrubification: A review of mechanisms and impacts on ecosystem carbon balance. Environmental Research Letters 16, no. 5: 053001. doi:10.1088/1748-9326/abf28b.
   Web of Science ®Google Scholar
• MET Norway. 2019. Meteorological data. www.met.no
   Google Scholar
• Mikola, J., T. Virtanen, M. Linkosalmi, E. Vähä, J. Nyman, O. Postagonova, A. Räsänen, et al. 2018. Spatial variation and linkages of soil and vegetation in the Siberian Arctic tundra–coupling field observations with remote sensing data. Biogeosciences 15, no. 9: 2781–801. doi:10.5194/bg-15-2781-2018.
   Web of Science ®Google Scholar
• Myers‐Smith, I. H., and D. S. Hik. 2013. Shrub canopies influence soil temperatures but not nutrient dynamics: An experimental test of tundra snow–shrub interactions. Ecology and Evolution 3, no. 11: 3683–700. doi:10.1002/ece3.710.
   PubMed Web of Science ®Google Scholar
• Myers-Smith, I. H., B. C. Forbes, M. Wilmking, M. Hallinger, T. Lantz, D. Blok, K. D. Tape, et al. 2011. Shrub expansion in tundra ecosystems: Dynamics, impacts and research priorities. Environmental Research Letters 6, no. 4: 045509. doi:10.1088/1748-9326/6/4/045509.
   Web of Science ®Google Scholar
• Nystuen, K. O., K. Sundsdal, Ø. H. Opedal, H. Holien, G. R. Strimbeck, and B. J. Graae. 2019. Lichens facilitate seedling recruitment in alpine heath. Journal of Vegetation Science 30, no. 5: 868–80. doi:10.1111/jvs.12773.
   Web of Science ®Google Scholar
• Odland, A., G. Bandekar, I. Hanssen-Bauer, and S. M. Sandvik. 2017. Relationships between vegetation, air and soil temperatures on Norwegian mountain summits. Geografiska Annaler: Series A, Physical Geography 99, no. 4: 1–14. doi:10.1080/04353676.2017.1333324.
   Web of Science ®Google Scholar
• O’Donnell, J. A., V. E. Romanovsky, J. W. Harden, and A. D. McGuire. 2009. The effect of moisture content on the thermal conductivity of moss and organic soil horizons from black spruce ecosystems in interior Alaska. Soil Science 174, no. 12: 646–51. doi:10.1097/SS.0b013e3181c4a7f8.
   Web of Science ®Google Scholar
• Oke, T. R. 2002. Boundary layer climates. 2nd ed. London: Routledge.
   Google Scholar
• Olefeldt, D., M. R. Turetsky, P. M. Crill, and A. D. McGuire. 2013. Environmental and physical controls on northern terrestrial methane emissions across permafrost zones. Global Change Biology 19, no. 2: 589–603. doi:10.1111/gcb.12071.
   PubMed Web of Science ®Google Scholar
• Opedal, Ø. H., W. S. Armbruster, and B. J. Graae. 2015. Linking small-scale topography with microclimate, plant species diversity and intra-specific trait variation in an alpine landscape. Plant Ecology & Diversity 8, no. 3: 305–15. doi:10.1080/17550874.2014.987330.
   Web of Science ®Google Scholar
• Pajunen, A. M., J. Oksanen, and R. Virtanen. 2011. Impact of shrub canopies on understorey vegetation in western Eurasian tundra. Journal of Vegetation Science 22, no. 5: 837–46. doi:10.1111/j.1654-1103.2011.01285.x.
   Web of Science ®Google Scholar
• Pape, R., and J. Löffler. 2017. Determinants of Arctic-alpine pasture resources: The need for a spatially and functionally fine-scaled perspective. Geografiska Annaler: Series A 99, no. 4: 1–18. doi:10.1080/04353676.2017.1368833.
   Google Scholar
• Pearson, R. G., S. J. Phillips, M. M. Loranty, P. S. A. Beck, T. Damoulas, S. J. Knight, and S. J. Goetz. 2013. Shifts in Arctic vegetation and associated feedbacks under climate change. National Climate Change 3, no. 7: 673–7. doi:10.1029/2005JG000013.
   Web of Science ®Google Scholar
• Porada, P., A. Ekici, and C. Beer. 2016. Effects of bryophyte and lichen cover on permafrost soil temperature at large scale. Cryosphere 10, no. 5: 2291. doi:10.5194/tc-10-2291-2016.
   Web of Science ®Google Scholar
• R Core Team. 2020. R: A language and environment for statistical computing. Vienna, Austria: R Foundation for Statistical Computing. https://www.R-project.org/
   Google Scholar
• Saito, M., T. Kato, and Y. Tang. 2009. Temperature controls ecosystem CO2 exchange of an alpine meadow on the northeastern Tibetan Plateau. Global Change Biology 15, no. 1: 221–8. doi:10.1111/j.1365-2486.2008.01713.x.
   Web of Science ®Google Scholar
• Scherrer, D., and C. Körner. 2011. Topographically controlled thermal‐habitat differentiation buffers alpine plant diversity against climate warming. Journal of Biogeography 38, no. 2: 406–16. doi:10.1111/j.1365-2699.2010.02407.x.
   Web of Science ®Google Scholar
• Schimel, J. P., C. Bilbrough, and J. M. Welker. 2004. Increased snow depth affects microbial activity and nitrogen mineralization in two Arctic tundra communities. Soil Biology & Biochemistry 36, no. 2: 217–27. doi:10.1016/j.soilbio.2003.09.008.
   Web of Science ®Google Scholar
• Stewart-Oaten, A., W. W. Murdoch, and K. R. Parker. 1986. Environmental impact assessment: “Pseudoreplication” in time? Ecology 67, no. 4: 929–40. doi:10.2307/1939815.
   Web of Science ®Google Scholar
• Sundstøl, S. A., and A. Odland. 2017. Responses of alpine vascular plants and lichens to soil temperatures. Ann. Annales Botanici Fennici 54, no. 1–3: 17–28. doi:10.5735/085.054.0304.
   Web of Science ®Google Scholar
• Vanneste, T., O. Michelsen, B. J. Graae, M. O. Kyrkjeeide, H. Holien, K. Hassel, S. Lindmo, et al. 2017. Impact of climate change on alpine vegetation of mountain summits in Norway. Ecological Research 32, no. 4: 1–15. doi:10.1007/s11284-017-1472-1.
   Web of Science ®Google Scholar
• van Zuijlen, K., R. E. Roos, K. Klanderud, S. I. Lang, and J. Asplund. 2020. Mat-forming lichens affect microclimate and litter decomposition by different mechanisms. Fungal Ecology 44: 100905. doi:10.1016/j.funeco.2019.100905.
   Web of Science ®Google Scholar
• Wilson, S. D., and C. Nilsson. 2009. Arctic alpine vegetation change over 20 years. Global Change Biology 15, no. 7: 1676–84. doi:10.1111/j.1365-2486.2009.01896.x.
   Web of Science ®Google Scholar
• Winkler, M., A. Lamprecht, K. Steinbauer, K. Hülber, J. P. Theurillat, F. Breiner, P. Choler, et al. 2016. The rich sides of mountain summits–a pan‐European view on aspect preferences of alpine plants. Journal of Biogeography 43, no. 11: 2261–73. doi:10.1111/jbi.12835.
   Web of Science ®Google Scholar
• Wundram, D., R. Pape, and J. Löffler. 2010. Alpine soil temperature variability at multiple scales. Arctic, Antarctic, and Alpine Research 42, no. 1: 117–28. doi:10.1657/1938-4246-42.1.117.
   Web of Science ®Google Scholar
• Zamin, T. J., and P. Grogan. 2012. Birch shrub growth in the low Arctic: The relative importance of experimental warming, enhanced nutrient availability, snow depth and caribou exclusion. Environmental Research Letters 7, no. 3: 034027. doi:10.1088/1748-9326/7/3/034027.
   Web of Science ®Google Scholar