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Morgner, Elke; Elberling, Bo; Strebel, Ditte; Cooper, Elisabeth J. (2010)
Publisher: Co-Action Publishing
Journal: Polar Research
Languages: English
Types: Article
Subjects:

Classified by OpenAIRE into

mesheuropmc: human activities
Winter respiration in snow-covered ecosystems strongly influences annual carbon cycling, underlining the importance of processes related to the timing and quantity of snow. Fences were used to increase snow depth from 30 to 150 cm, and impacts on respiration were investigated in heath and mesic meadow, two common vegetation types in Svalbard. We manually measured ecosystem respiration from July 2007 to July 2008 at a temporal resolution greater than previously achieved in the High Arctic (campaigns: summer, eight; autumn, six; winter, 17; spring, nine). Moisture contents of unfrozen soil and soil temperatures throughout the year were also recorded. The increased snow depth resulted in significantly higher winter soil temperatures and increased ecosystem respiration. A temperature–efflux model explained most of the variation of observed effluxes: meadows, 94 (controls) and 93% (fences); heaths, 84 and 77%, respectively. Snow fences increased the total non-growing season efflux from 70 to 92 (heaths) and from 68 to 125 g CO2-C m-2 (meadows). The non-growing season contributed to 56 (heaths) and 42% (meadows) of the total annual carbon respired. This proportion increased with deeper snow to 64% in both vegetation types. Summer respiration rates were unaffected by snow fences, but the total growing season respiration was lower behind fences because of the considerably delayed snowmelt. Meadows had higher summer respiration rates than heaths. In addition, non-steady state CO2 effluxes were measured as bursts lasting several days during spring soil thawing, and when ice layers were broken to carry out winter efflux measurements.
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    • Björkman M.P., Morgner E., Björk R.G., Cooper E.J., Elberling B. & Klemedtsson L. 2010. A comparison of annual and seasonal carbon dioxide effluxes between sub-Arctic Sweden and High-Arctic Svalbard. Polar Research 29, 75-84.
    • Brooks P.D., Schmidt S.K. & Williams M.W. 1997. Winter production of CO2 and N2O from alpine tundra: environmental controls and relationship to inter-system C and N fluxes. Oecologia 110, 403-413.
    • Brooks P.D., Williams M.W. & Schmidt S.K. 1998. Inorganic nitrogen and microbial biomass dynamics before and during spring snowmelt. Biogeochemistry 43, 1-15.
    • Chapin F.S. III, Shaver G.R., Giblin A.E., Nadelhoffer K.J. & Laundre J.A. 1995. Responses of Arctic tundra to experimental and observed changes in climate. Ecology 76, 694-711.
    • Cooper E.J. 2004. Out of sight, out of mind: thermal acclimation of root respiration in Arctic Ranunculus. Arctic, Antarctic, and Alpine Research 36, 307-312.
    • Crawley M.J. 2005. Statistics: an introduction using R. Chichester: John Wiley & Sons.
    • Davidson E.A, Janssens I.A & Luo Y.Q. 2006. On the variability of respiration in terrestrial ecosystems: moving beyond Q(10). Global Change Biology 12, 154-164.
    • DeLuca T.H., Keeney D.R. & McCarty G.W. 1992. Effect of freeze-thaw events on mineralization of soil nitrogen. Biological Fertility of Soils 14, 116-120.
    • Elberling B. 2003. Seasonal trends of soil CO2 dynamics in a soil subject to freezing. Journal of Hydrology 276, 159-175.
    • Elberling B. 2007. Annual soil CO2 effluxes in the High Arctic: the role of snow thickness and vegetation type. Soil Biology & Biochemistry 39, 646-654.
    • Elberling B. & Brandt K.K. 2003. Uncoupling of microbial CO2 production and release in frozen soil and its implications for field studies of Arctic C cycling. Soil Biology & Biochemistry 35, 263-272.
    • Elberling B., Jakobsen B.H., Berg P., Soendergaard J. & Sigsgaard C. 2004. Influence of vegetation, temperature, and water content on soil carbon distribution and mineralization in four High Arctic soils. Arctic, Antarctic, and Alpine Research 36, 528-538.
    • Elvebakk A. 2005. A vegetation map of Svalbard on the scale 1 : 3.5 mill. Phytocoenologia 35, 951-967.
    • Fahnestock J.T., Jones M.H., Brooks P.D., Walker D.A. & Welker J.M. 1998. Winter and early spring CO2 efflux from tundra communities of northern Alaska. Journal of Geophysical Research-Atmospheres 103, 29 023-29 027.
    • Fahnestock J.T., Jones M.H. & Welker J.M. 1999. Wintertime CO2 efflux from Arctic soils: implications for annual carbon budgets. Global Biogeochemical Cycles 13, 775-779.
    • Fang C. & Moncrieff J.B. 2001. The dependence of soil CO2 efflux on temperature. Soil Biology & Biochemistry 33, 155-165.
    • Giorgi F., Hewitson B., Christensen J., Hulme M., von Storch H., Whetton P., Jones R. & Mearns L.F.C. 2001. Regional climate information-evaluation and projections. In J.T. Houghton et al. (eds.): Climate change 2001: the scientific basis. Contribution of Working Group I to the third assessment report of the Intergovernmental Panel on Cimate Change. Pp. 583-638. Cambridge: Cambridge University Press.
    • Grogan P. & Chapin F.S. III. 1999. Arctic soil respiration: effects of climate and vegetation depend on season. Ecosystems 2, 451-459.
    • Grogan P. & Chapin F.S. III. 2000. Initial effects of experimental warming on above- and belowground components of net ecosystem CO2 exchange in Arctic tundra. Oecologia 125, 512-520.
    • Grogan P., Illeris L., Michelsen A., Jonasson S. 2001. Respiration of recently-fixed plant carbon dominates mid-winter ecosystem CO2 production in sub-Arctic heath tundra. Climatic Change 50, 129-142.
    • Grogan P. & Jonasson S. 2005. Temperature and substrate controls on intra-annual variation in ecosystem respiration in two subarctic vegetation types. Global Change Biology 11, 465-575.
    • Groisman P.Y. & Easterling D.R. 1994. Variability and trends of total precipitation and snowfall over the United States and Canada. Journal of Climate 7, 184-205.
    • Hanson P.J., Edwards N.T., Garten C.T. & Andrews J.A. 2000. Separating root and soil microbial contributions to soil respiration: a review of methods and observations. Biogeochemistry 48, 115-146.
    • Hjelle A. 1993. Geology of Svalbard. Oslo: Norwegian Polar Institute.
    • Jonasson S., Michelsen A., Schmidt I.K. & Nielsen E.V. 1999. Responses in microbes and plants to changed temperature, nutrient, and light regimes in the Arctic. Ecology 80, 1828-1843.
    • Jones M.H., Fahnestock J.T. & Welker J.M. 1999. Early and late winter CO2 efflux from Arctic tundra in the Kuparuk River watershed, Alaska, USA. Arctic, Antarctic, and Alpine Research 31, 187-190.
    • Kirschbaum M.U.F. 1995. The temperature dependence of soil organic matter decomposition, and the effect of global warming on soil organic C storage. Soil Biology & Biochemistry 27, 753-760.
    • Larsen K.S., Grogan P., Jonasson S. & Michelsen A. 2007. Respiration and microbial dynamics in two subarctic ecosystems during winter and spring thaw: effects of increased snow depth. Arctic, Antarctic, and Alpine Research 39, 268-276.
    • Lashof D.A. 1989. The dynamic greenhouse-feedback processes that may influence future concentrations of atmospheric trace gases and climatic change. Climatic Change 14, 213-242.
    • Lipson D.A., Schmidt S.K. & Monson R.K. 2000. Carbon availability and temperature control the post-snowmelt decline in alpine soil microbial biomass. Soil Biology & Biochemistry 32, 441-448.
    • Luo Y.Q. & Zhou X. 2006. Soil respiration and the environment. London: Elsevier Academic Press.
    • McDowell N.G., Marshall J.D., Hooker T.D. & Musselman R. 2000. Estimating CO2 flux from snowpacks at three sites in the Rocky Mountains. Tree Physiology 20, 745-753.
    • McKane R.B., Rastetter E.B., Shaver G.R., Nadelhoffer K.J., Giblin A.E., Laundre J.A. & Chapin F.S. III. 1997a. Climatic effects on tundra carbon storage inferred from experimental data and a model. Ecology 78, 1170-1187.
    • McKane R.B., Rastetter E.B., Shaver G.R., Nadelhoffer K.J., Giblin A.E., Laundre J.A. & Chapin F.S. III. 1997b. Reconstruction and analysis of historical changes in carbon storage in Arctic tundra. Ecology 78, 1188-1198.
    • Mikan C.J., Schimel J.P. & Doyle A.P. 2002. Temperature controls of microbial respiration in Arctic tundra soils above and below freezing. Soil Biology & Biochemistry 34, 1785-1795.
    • Nobrega S. & Grogan P. 2007. Deeper snow enhances winter respiration from both plant-associated and bulk soil carbon pools in birch hummock tundra. Ecosystems 10, 419-431.
    • Norman J.M., Kucharik C.J., Gower S.T., Baldocchi D.D., Crill P.M., Rayment M., Savage K. & Striegl R.G. 1997. A comparison of six methods for measuring soil-surface carbon dioxide fluxes. Journal of Geophysical Research-Atmospheres 102, 28 771-28 777.
    • Oechel W.C., Vourlitis G. & Hastings S.J. 1997. Cold season CO2 emission from Arctic soils. Global Biogeochemistry Cycles 11, 163-172.
    • Press M.C., Potter J.A., Burke M.J.W., Callaghan T.V. & Lee J.A. 1998. Responses of a subarctic dwarf shrub heath community to simulated environmental change. Journal of Ecology 86, 315-327.
    • Rieley G., Welker J.M., Eglinton G. & Callaghan T.V. 1995. Epicuticular waxes of Arctic plants: compositional differences in relation to winter snow cover. Phytochemistry 38, 45-52.
    • Rønning O.I. 1965. Studies in Dryadion of Svalbard. Norsk Polarinstitutt Skrifter 134. Oslo: Norwegian Polar Institute.
    • Schimel J.P., Bilbrough C. & Welker J.A. 2004. Increased snow depth affects microbial activity and nitrogen mineralization in two Arctic tundra communities. Soil Biology & Biochemistry 36, 217-227.
    • Schimel J.P. & Clein J.S. 1996. Microbial response to freeze-thaw cycles in tundra and taiga soils. Soil Biology & Biochemistry 28, 1061-1066.
    • Sjögersten S., van der Wal R. & Woodin S.J. 2008. Habitat type determines herbivory controls over CO2 fluxes in a warmer Arctic. Ecology 89, 2103-2116.
    • Skogland T., Lomeland S. & Goksoyr J. 1988. Respiratory burst after freezing and thawing of soil: experiments with soil bacteria. Soil Biology & Biochemistry 20, 851-856.
    • Stoneström D.A. & Rubin J. 1989. Water content dependence of trapped air in two soils. Water Resources Research 25, 1947-1958.
    • Sturm M., McFadden J.P., Liston G.E., Chapin F.S. III, Racine C.H. & Holmgren J. 2001. Snow-shrub interactions in Arctic tundra: a hypothesis with climatic implications. Journal of Climate 14, 336-344.
    • Sturm M., Schimel J., Michaelson G., Welker J.M., Oberbauer S.F., Liston G.E., Fahnestock J. & Romanovsky V.E. 2005. Winter biological processes could help convert Arctic tundra to shrubland. Bioscience 55, 17-26.
    • Sullivan P.F., Welker J.M. Arens S.J.T. & Sveinbjörnsson B. 2008. Continuous estimates of CO2 efflux from Arctic and boreal soils during the snow-covered season in Alaska. Journal of Geophysical Research-Biogeosciences 113, G04009, doi: 10.1029/2008JG000715.
    • Tolgensbakk J., Soerbel L. & Hoegvard K. 2000. Adventdalen, geomorphological and Quaternary geological map. Svalbard 1 : 100 000. Spitsbergen sheet C9Q. Norsk Polarinstitutt Temakart 32. Tromsø: Norwegian Polar Institute.
    • van Bochove E., Theriault G., Rochette P., Jones H.G. & Pomeroy J.W. 2001. Thick ice layers in snow and frozen soil affecting gas emissions from agricultural soils during winter. Journal of Geophysical Research-Atmospheres 106, 23 061-23 071.
    • Walker M.D., Walker D.A., Welker J.M., Arft A.M., Bardsley T., Brooks P.D., Fahnestock J.T., Jones M.H., Losleben M., Parsons A.N., Seastedt T.R. & Turner P.L. 1999. Long-term experimental manipulation of winter snow regime and summer temperature in Arctic and alpine tundra. Hydrological Processes 13, 2315-2330.
    • Wdowiak J.V. 2008. The effect of an increasing snow depth on the growth and seed production of a High Arctic tundra heath plant, Cassiope tetragona. Honours Bachelor of Science in Biology, Department of Biology, Lakehead University, Thunder Bay, ON, Canada.
    • Welker J.M., Fahnestock J.T. & Jones M.H. 2000. Annual CO2 flux in dry and moist Arctic tundra: field responses to increases in summer temperatures and winter snow depth. Climatic Change 44, 139-150.
    • Welker J.M., Fahnestock J.T., Henry G.H.R., O'dea K.W. & Chimner R.A. 2004. CO2 exchange in three Canadian High Arctic ecosystems: response to long-term warming. Global Change Biology 10, 1981-1995.
    • Welles J.M., Demetriades-Shah T.H. & McDermitt D.K. 2001. Considerations for measuring ground CO2 eflux with chambers. Chemical Geology 117, 3-13.
    • Zimov S.A., Davidov S.P., Voropaev Y.V., Prosiannikov S.F., Semiletov I.P., Chapin M.C. & Chapin F.S. 1996. Siberian CO2 efflux in winter as a CO2 source and cause of seasonality in atmospheric CO2. Climatic Change 33, 111-120.
    • Zimov S.A., Zimova G.M., Daviodov S.P., Daviodova A.I., Voropaev Y.V., Voropaeva Z.V., Prosiannikov S.F., Prosiannikova O.V., Semiletova I.V. & Semiletov I.P. 1993. Winter biotic activity and production of CO2 in Siberian soils-a factor in the greenhouse effect. Journal of Geophysical Research-Atmospheres 98, 5017-5023.
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