Publications – University of Copenhagen


Brandbjerg CLIMAITE Bibliography

Dietzen CA, Larsen KS, Ambus P, Michelsen A, Arndal MF, Beier C, Reinsch S, Schmidt IK (2019) Accumulation of soil carbon under elevated CO2 unaffected by warming and drought. Global Change Biology. doi: 10.1111/gcb.14699

Arndal MF, Tolver A, Larsen KS, Beier C, Schmidt IK (2018) Root growth and vertical distribution in response to elevated CO2, warming and drought in a mixed heathland-grassland. Ecosystems, 21: 15-30. doi:10.1007/s10021-017-0131-2.

Crowther TW, Machmuller M, Carey JC, Allison SD, Blair JM, Bridgham SD, Burton AJ, Dijkstra FA, Elberling B, Estiarte M, Larsen KS, Laudon H, Lupascu M, Marhan S, Mohan J, Niu S, Penuelas J, Schmidt IK, Templer PH, Kroel-Dulay G, Frey S, Bradford MA (2018) Replying to N. van Gestel et al. Nature 554, 10.1038/nature25745 (2018). Nature volume 554, pages E7–E8.

Damgaard CF, Holmstrup M, Schmidt IK, Beier C, Larsen KS (2018) On the problems of using linear models in ecological manipulation experiments: lessons learned from a climate experiment. Ecosphere, 9(6): Article e02322. doi: 10.1002/ecs2.2322.

Holmstrup M, Damgaard C, Schmidt IK, Arndal MF, Beier C, Mikkelsen TN, Ambus P, Larsen KS, Pilegaard K, Michelsen A, Andresen LC, Haugwitz M, Bergmark L, Priemé A, Zaitsev AS, Georgieva S, Dam M, Vestergård M, Christensen S (2017) Long-term and realistic global change manipulations had low impact on diversity of soil biota in temperate heathland. Nature Scientific Reports 7:41388. doi:10.1038/srep41388

Reinsch S, Koller E, Sowerby A, de Dato G, Estiarte M, Guidolotti G, Kovács-Láng E, Kröel-Dulay G, Lellei-Kovács E, Larsen KS, Liberati D, Peñuelas J, Ransijn J, Robinson DA, Schmidt IK, Smith AR, Tietema A, Dukes JS, Beier C, Emmett BA (2017) Shrubland primary production and soil respiration diverge along European climate gradient. Nature Scientific Reports 7, Article no.: 43952.

Rousk K, Pedersen P, Dyrnum K, Michelsen A (2017) The interactive effects of temperature and moisture on nitrogen fixation in two temperate-arctic mosses. THEORETICAL AND EXPERIMENTAL PLANT PHYSIOLOGY 29(1), 25-36. doi: 10.1007/s40626-016-0079-1.

Thaysen EM, Reinsch S, Larsen KS, Ambus P (2017) Decrease in heathland soil labile organic carbon under future atmospheric and climatic conditions. Biogeochemistry, DOI 10.1007/s10533-017-0303-3.

Crowther T, Rowe C , Wieder W, Carey J, Machmuller M, Todd-Brown K, Snoek B, Fang S, Zhou G, Blair J, Bridgham S, Burton A, Carillo Y, Clark J, Classen A, Dijkstra F, Elberling B, Emmett B, Estiarte M, Frey S, Guo J, Harte J, Jiang L, Johnson B, Kröel-Dulay G, Larsen KS, Laudon H, Lavallee J, Luo Y, Ma L, Marhan S, Michelsen A, Niu S, Pendall E, Penuelas J, Pfeifer-Meister L, Poll C, Reynolds L, Schmidt IK, Sistla S, Templer P, Treseder K, Reich P, Sokol N, Lupascu M, Welker J, Allison S, Lavallee J, Bradford M (2016) Quantifying global soil carbon losses in response to warming. Nature 540: 104-108. doi:10.1038/nature20150.

Carey JC, Tanga J, Templerb PH, Kroeger KD, Crowther TW, Burton AJ, Dukes JS, Emmett B, Frey SD, Heskel MA, Jiang L, Machmuller MB, Mohann J, Panetta AM, Reich P, Reinsch S, Wan X, Allison SD, Bamminger C, Bridgham S, Collins SL, de Dato G, Eddy WC, Enquist BJ, Estiarte M, Harte J, Henderson A, Johnson BR, Larsen KS, Luo Y, Marhan S, Melillo JM, Peñuelas J, Pfeifer-Meister L, Poll C, Rastetter E, Reinmann AB, Reynolds LL, Schmidt IK, Shaver GR, Strong AL, Suseela V, Tietema A (2016) Temperature response of soil respiration largely unaltered with experimental warming. PNAS 113: 13797-13802.

Lellei-Kovács E, Botta-Dukát Z, de Dato G, Estiarte M, Guidolotti G, Kopittke GR, Kovács-Láng E, Kröel-Dulay G, Larsen KS, Peñuelas J, Smith AR, Sowerby A, Tietema A, Schmidt IK (2016) Temperature Dependence of Soil Respiration Modulated by Thresholds in Soil Water Availability Across European Shrubland Ecosystems. Ecosystems 19(8):  pp 1460–1477. doi: 10.1007/s10021-016-0016-9.

Bataillon T, Galtier N, Bernard A, Cryer N, Faivre N, Santoni S, Severac D, Mikkelsen TN, Larsen KS, Beier C, Sørensen JG, Holmstrup M, Ehlers BK (2016) A replicated climate change field experiment reveals rapid evolutionary response in an ecologically important soil invertebrate. Global Change Biology. doi: 10.1111/gcb.13293.

De Boeck HJ, Vicca S,  Roy J, Nijs I, Milcu A, Kreyling J, Jentsch A, Chabbi A, Campioli M, Callaghan T, Beierkuhnlein C, Beier C (2015) Global Change Experiments: Challenges and Opportunities. BioScience 65 (9), 922–931. doi: 10.1093/biosci/biv099.

Estiarte M, Vicca S, Peñuelas J, Bahn M, Beier C, Emmett BA, Fay PA,  Hanson PJ, Hasibeder R, Kigel J, Kröel-Dulay G, Larsen KS, Lellei-Kovács E, Limousin JM, Ogaya R, Ourcival JM, Reinsch S, Sala OE, Schmidt IK, Sternberg M, Tielbörger K, Tietema A, Janssens IA (2016) Few multi-year precipitation-reduction experiments find a shift in the productivity-precipitation relationship. Global Change Biology 22: 2570–2581, doi: 10.1111/gcb.13269.

Holmstrup M, Schmelz RM, Carrera N, Dyrnum K, Larsen KS, Mikkelsen TN, Beier C (2015) Responses of enchytraeids to increased temperature, drought and atmospheric CO2: Results of an eight-year field experiment in dry heathland. European Journal of Soil Biology 70: 15-22.

Kayler, ZE, De Boeck HJ, Fatichi S, Grunzweig JM, Merbold L, Beier C, McDowell N, Dukes JS (2015) Experiments to confront the environmental extremes of climate change. FRONTIERS IN ECOLOGY AND THE ENVIRONMENT 13(4), 219-225. doi: 10.1890/140174.

Kröel-Dulay G, Ransijn J Schmidt IK, Beier C, Angelis P, de Dato G, Dukes JS, Emmett B, Estiarte M, Garadnai J, Kongstad J, Kovács-Lang E, Larsen KS, Liberati, D, Ogaya R, Riis-Nielsen T, Smith A, Sowerby A, Tietema A, Penuelas J. (2015) Disturbance increases ecosystem sensitivity to climate change. NATURE Communications, DOI: 10.1038/ncomms7682.

Ransijn J, Damgaard C, Schmidt IK (2015) Do competitive interactions in dry heathlands explain plant abundance patterns and species coexistence? Plant Ecology 216, 199-211.

Ransijn J, Kepfer-Rojas S, Verheyen K, Riis-Nielsen T, Schmidt IK (2015) Hints for alternative stable states from long-term vegetation dynamics in an unmanaged heathland. Journal of Vegetation Science 26, 254-266.

Vestergard M, Dyrnum K, Michelsen A, Damgaard C, Holmstrup M (2015) Long-term multifactorial climate change impacts on mesofaunal biomass and nitrogen content. Applied Soil Ecology 92, 54-63. doi: 10.1016/j.apsoil.2015.03.002.

Andresen LC, Dungait JAJ, Bol R, Selsted MB, Ambus P, Michelsen A (2014) Bacteria and fungi respond differently to multifactorial climate change in a temperate heathland, traced with 13C-glycine and FACE CO2. PLoS One 9(1) e85070.

Arndal M, Schmidt I, Kongstad J, Beier C, Michelsen A. 2014. Root growth and N dynamics in response to multi-year experimental warming, summer drought and elevated CO2 in a mixed heathland-grass ecosystem. Functional Plant Biology 41: 1-10.

Björsne, A–K, Rütting T, Ambus P (2014) Combined climate factors alleviate changes in gross soil nitrogen dynamics in heathlands. Biogeochemistry 120 (1-3), 191–201.

Haugwitz MS, Bergmark L, Priemé A, Christensen S, Beier C, Michelsen A (2014) Soil microorganisms respond to five years of climate change manipulations and elevated atmospheric CO2 in a temperate heath ecosystem. Plant and Soil, 374, 211-222.

Reinsch, S.; Michelsen, A.; Sárossy, Z.; Egsgaard, H.; Schmidt, I.K.; Jakobsen, I. and Ambus, P. (2014) Short-term utilization of carbon by the soil microbial community under future climatic conditions in a temperate heathland.  Soil Biology and Biochemistry, 68, 9-19

Vicca S, Bahn M, Estiarte M, van Loon EE, Vargas R, Alberti G, Ambus P, Arft AM, Beier C, Bentley LP, Borken W, Buchmann N, Collins SL, de Dato G, Dukes JS, Escolar C, Fay P, Guidolotti G, Hanson PJ, Kahmen A, Kröel-Dulay G, Ladreiter-Knauss T, Larsen KS, Lellei-Kovacs E, Lebrija-Trejos E, Maestre FT, Marhan S, Marshall M, Meir P, Miao Y, Muhr J, Niklaus PA, Ogaya R, Penuelas J, Poll C, Rustad LE, Savage K, Schindlbacher A, Schmidt IK, Smith AR, Sotta ED, Suseela V, Tietema A, van Gestel N, van Straaten O, Wan S, Weber U and Janssens IA (2014) Can current moisture responses predict soil respiration under altered precipitation regimes? A synthesis of manipulation experiments. Biogeosciences 11: 2991-3013. doi: 10.5194/bg-11-2991-2014.

Albert, K.R., Boesgaard, K., Ro-Poulsen, H., Mikkelsen, T.N., Andersen, S., Pilegaard, K. (2013) Antagonism between elevated CO2, nighttime warming, and summer drought reduces the robustness of PSII performance to freezing events. Environmental and Experimental Botany 93, 1– 12.

Arndal M, Merrild M, Michelsen A, Schmidt I, Mikkelsen T, Beier C (2013) Net root growth and nutrient acquisition in response to predicted climate change in two contrasting heathland species. Plant and soil 369: 615-629.

Boesgaard, KS, Mikkelsen TN, Ro-Poulsen H., Ibrom I (2013) Reduction of molecular gas diffusion through gaskets in leaf gas exchange cuvettes by leaf-mediated pores. Plant, Cell and Environment 36, 1352–1362.

Bruhn D, Larsen KS, de Dato GD, Duce P, Zara P, Beier C, Schmidt IK, Clausen S, Mikkelsen TN (2013) Improving the performance of infrared reflective night curtains for warming field plots. Agricultural and Forest Meteorology, 173, 53–62.

Holmstrup M, Bayley M (2013) Protaphorura tricampata, a euedaphic and highly permeable springtail that can sustain activity by osmoregulation during extreme drought. Journal of Insect Physiology 59: 1104-1110

Holmstrup M, Sørensen JG, Schmidt IK, Nielsen PL, Mason S, Tietema A, Smith AR, Bataillon T, Beier C, Ehlers BK (2013) Soil microarthropods are only weakly impacted after 13 years of repeated drought treatment in wet and dry heathland soils. Soil Biology & Biochemistry 66: 110-118

Kreyling, J.; Jentsch, A. and Beier, C (2013) Beyond realism in climate change experiments: gradient approaches identify thresholds and tipping points. Ecol. Letters. doi: 10.1111/ele.12193.

Kreyling J, Beier C (2013) Complexity in climate change manipulation experiments. BioScience. 9, 763-767.

Reinsch, S.; Ambus P, Thornton B, Paterson E (2013) Impact of future climatic conditions on the potential for plant-mediated soil organic matter priming. Soil Biology & Biogeochemistry, 65, 133-140

Scherber C, Gladbach DJ, Stevnbak K, Karsten RJ, Schmidt IK, Michelsen A, Albert KR, Larsen KS, Mikkelsen TN, Beier C, Christensen S (2013). Multi-factor climate change effects on insect herbivore performance. Ecology and Evolution 3, pp. 1449-1460.

Albert, K. R., J. Kongstad, I. K. Schmidt, H. Ro-Poulsen, T. N. Mikkelsen, A. Michelsen, et al. 2012. Temperate heath plant response to dry conditions depends on growth strategy and less on physiology. Acta Oecol. 45, 79–87.

Beier, C.; Beierkuhnlein, C.; Wohlgemuth, T.; Penuelas, J.; Emmett, B.A.; Körner, C.; de Boeck, H.; Christensen, J.H.; Leuzinger, S.; Janssens, I.A.; and Hansen, K. (2012) Precipitation manipulation experiments – Challenges and recommendations for the future. Ecology Letters, 15, 899-911. doi: 10.1111/j.1461-0248.2012.01793.x

Carter MS, Larsen KS, Emmett B, Estiarte M, Field C, Leith ID, Lund M, Meijide A, Mills RTE, Niinemets Ü, Peñuelas J, Portillo-Estrada M, Schmidt IK, Selsted MB, Sheppard LJ Sowerby A, Tietema A, Beier C (2012) Synthesizing greenhouse gas fluxes across nine European peatlands and shrublands – responses to climatic and environmental changes. Biogeosciences, 9, pp. 3739-3755.

DielemanWIJ, Vicca S, Dijkstra FA, Hagedorn F, Hovenden MJ, Larsen KS, Morgan JA, Volder A, Beier C, Dukes JS, King J, Leuzinger S, Linder S, Luo Y, Oren R, De Angelis P, Tingey D, Hoosbeek MR, Janssens IA (2012) Simple additive effects are rare: a quantitative review of plant biomass and soil process responses to combined manipulations of CO2 and temperature. Global Change Biology, 18, pp. 2681-2693.

Holmstrup M, Sørensen JG, Maraldo K, Schmidt IK, Mason S, Tietema A, Smith AR, Emmett B, Schmelz R, Bataillon T, Beier C, Ehlers BK (2012) Increased frequency of drought reduces species richness of enchytraeid communities in both wet and dry heathland soils. Soil Biology & Biochemistry 53: 43-49

Kongstad J, Schmidt I.K, Riis-Nielsen T, Arndal M.F, Mikkelsen T.N, Beier C (2012) High resilience in heathland plants to changes in temperature, drought, and CO2 in combination: Results from the CLIMAITE Experiment. Ecosystems 15: 269–283. DOI: 10.1007/s10021-011-9508-9

Selsted, M.; van der Linden, L.; Ibrom, A.; Michelsen, A.; Larsen, K.; Kongstad, J.; Mikkelsen, T.; Pilegaard, K.; Beier, C.; Ambus, P. (2012). Soil respiration is stimulated by elevated CO2 and reduced by summer drought: three years of measurements in a multifactor ecosystem manipulation experiment in a temperate heathland (CLIMAITE). Global Change Biology, 18, 1216-1230.

Stevnbak, K.; Maraldo, K.; Georgieva, S.; Bjørnlund, L.; Beier, C.; Schmidt, I. K.; Christensen, S. (2012) Suppression of soil decomposers and promotion of long-lived, root herbivorous nematodes by climate change. European Journal of Soil Biology 2012, 52, 1-7.

Waagner D, Bayley M, Mariën J, Holmstrup M, Ellers J, Roelofs D (2012) Ecological and molecular consequences of prolonged drought and subsequent rehydration in Folsomia candida (Collembola). Journal of Insect Physiology 58: 130-137

Albert, K.R., Ro-Poulsen, H., Mikkelsen, T.N., Michelsen, A., Linden, L., Beier, C., 2011a. Interactive effects of elevated CO2, warming and drought on photosynthesis of Deschampsia flexuosa in a temperate heath ecosystem. Journal of Experimental Botany 62, 4253–4266.

Albert, K.R., Mikkelsen, T.N., Michelsen, A., Ro-Poulsen, H., Linden, L., 2011b. Interactive effects of drought, elevated CO2 and warming on photosynthetic capacity and photosystem performance in temperate heath plants. Journal of Plant Physiology 168, 1550–1561.

Albert, K.R., Ro-Poulsen, H., Mikkelsen, T.N., Michelsen, A., Linden, L., Beier, C., 2011c. Effects of elevated CO2, warming and drought episodes on plant carbon uptake in a temperate heath ecosystem are controlled by soil water status. Plant, Cell & Environment 34, 1207–1222.

Andresen LC, Konestabo HS, Maraldo K, Holmstrup M, Ambus P, Beier C, Michelsen A (2011) Organic matter flow in the food web at a temperate heath under multifactorial climate change. Rapid Communications in Mass Spectrometry 25: 1485-1496.

Carter MS, Ambus P, Albert KR, Larsen KS, Andersson M, Priemé A, van der Linden L, Beier C (2011) Effects of elevated atmospheric CO2, prolonged summer drought and temperature increase on N2O and CH4 fluxes in a temperate heathland. Soil Biology and Biochemistry, 43, pp.1660-1670.

Larsen KS, Andresen LC, Beier C, Jonasson S, Albert KR, Ambus P, Andersen KS, Arndal MF, Carter MS, Christensen S, Holmstrup M, Ibrom A, Kongstad J, van der Linden L, Maraldo K, Michelsen A, Mikkelsen TN, Pilegaard K, Priemé A, Ro-Poulsen H, Schmidt IK, Selsted MB (2011) Reduced N cycling in response to drought, warming, and elevated CO2 in a Danish heathland: Synthesizing results of the CLIMAITE project after two years of treatments. Global Change Biology 17: 1884-1899.

Maraldo K, Christensen B, Holmstrup M (2011) The excretion of ammonium by enchytraeids (Cognettia sphagnetorum). Soil Biology & Biochemistry 43: 991-996

Selsted, M. B.; Ambus, P.; Michelsen, A.; van der Linden, L.; Larsen, K.S.; Pilegaard, K.; Mikkelsen, T.N. and Beier, C. (2011). Measurement of carbon dioxide fluxes in a free-air carbon dioxide enrichment experiment using the closed flux chamber technique. Atmospheric Environment, 45, 208-214.

Waagner D, Bayley M, Holmstrup M (2011) Recovery of reproduction after drought in the soil living Folsomia candida (Collembola). Soil Biology & Biochemistry 43: 690-692

Andresen, L.A., Michelsen A., Ambus P., Beier C. (2010a) Belowground heathland responses after 2 years of combined warming, elevated CO2 and summer drought. Biogeochemistry 101, 27-46.

Andresen L.C., Michelsen A., Jonasson S, Schmidt I.K., Mikkelsen T.N., Ambus P., Beier C. (2010b). Plant nutrient mobilization in temperate heathland responds to elevated CO2, temperature and drought. Plant and Soil 328, 381-396.

Maraldo K, Holmstrup M (2010) Enchytraeids in a changing climate: A mini-review. Pedobiologia 53: 161-167

Maraldo K, Linden LG, Christensen B, Mikkelsen TN, Beier C, Krogh PH, Holmstrup M (2010) The counteracting effects of elevated air CO2 concentrations and drought episodes: studies of enchytraeid populations in dry heathland. Soil Biology and Biochemistry 42: 1958-1966

Albert KR (2009) Plant eco-physiological responses to multiple environmental and climate changes. Unpublished PhD thesis. University of Copenhagen, Copenhagen, 346 pp.

Damgaard C, Riis-Nielsen T, Schmidt IK. (2009) Estimating plant competition coefficients and predicting community dynamics from non-destructive pin-point data: a case study with Calluna vulgaris and Deschampsia flexuosa. Plant Ecology 201, 687-697.

Maraldo K, Ravn HW, Slotsbo S, Holmstrup M (2009) Responses to acute and chronic desiccation stress in Enchytraeus (Oligochaeta: Enchytraeidae). Journal of Comparative Physiology B 179: 113-123

Maraldo K, Holmstrup M (2009) Recovery of enchytraeid populations after severe drought events. Applied Soil Ecology 42: 227-235

Nielsen, P.L, Andresen, L.C., Michelsen, A., Schmidt, I.K, Kongstad, J. (2009) Seasonal variations and effects of nutrient applications on N and P and microbial biomass under two temperate heathland plants.  Applied Soil Ecology 42, 279-287.

U. Skiba, J. Drewer, Y.S. Tang, N. van Dijk, C. Helfter, E. Nemitz, D. Famulari, J.N. Cape, S.K. Jones, M. Twigg, M. Pihlatie, T. Vesala, K.S. Larsen, M.S. Carter, P. Ambus, A. Ibrom, C. Beier, A. Hensen, A. Frumau, J.W. Erisman, N. Brüggemann, R. Gasche, K. Butterbach-Bahl, A. Neftel, C. Spirig, L. Horvath, A. Freibauer, P. Cellier, P. Laville, B. Loubet, E. Magliulo, T. Bertolini, G. Geufert, M. Andersson, G. Manca, T. Laurila, M. Aurela, A. Lohila, S. Zechmeister-Boltenstern, B. Kitzler, G. Schaufler, J. Siemens, R. Kindler, C. Flechard and M.A. Sutton  (2009) Biosphere–atmosphere exchange of reactive nitrogen and greenhouse gases at the NitroEurope core flux measurement sites: measurement strategy and first data sets, Agric. Ecosyst. Environ. 133, pp. 139–149.

Knapp, A. K., Beier, C., Briske, D. D., Classen, A. T., Luo, Y., Reichstein, M., Smith, M. D., Smith, S. D., Bell, J. E., Fay, P. A., Heisler, J. L., Leavitt, S. W., Sherry, R., Smith, B., Weng, E. 2008. Consequences of More Extreme Precipitation Regimes for Terrestrial Ecosystems. BioScience, 58 (9), 811-821. doi: 10.1641/B580908.

Maraldo K, Beier C, Schmidt IK, Holmstrup M (2008) Can field populations of the enchytraeid, Cognettia sphagnetorum, adapt to increased drought stress? Soil Biology and Biochemistry 40: 1765-1771

Mikkelsen TN, Beier C, Jonasson S, Holmstrup M, Schmidt IK, Ambus P, Pilegaard K, Michelsen A, Albert K, Andresen LC, Arndal MF, Bruun N, Christensen S, Danbæk S, Gundersen P, Jørgensen P, Linden LG, Kongstad J, Maraldo K, Priemé A,Riis-Nielsen T, Ro-Poulsen H, Stevnbak K, Selsted MB, Sørensen P, Larsen KS, Carter MS, Ibrom A, Martinussen T, Miglietta F, Sverdrup H. 2008. Experimental design of multifactor climate change experiments with elevated CO2, warming and drought: the CLIMAITE project. Functionel Ecology, 22, 185–95.

Sowerby, A., Emmett, B.A., Tietema, A., Beier, C. (2008) Contrasting effects of repeated summer drought on soil carbon efflux in hydric and mesic heathland soils. Global Change Biology, 14, 2388-2404.

de Graaff MA, van Groenigen KJ, Six J, Hungate B, van Kessel C (2006) Interactions between plant growth and soil nutrient cycling under elevated CO2: a metaanalysis. Global Change Biology, 12, 2077–2091.

Reich PB, Hobbie SE, Lee T et al. (2006) Nitrogen limitation constrains sustainability of ecosystem response to CO2. Nature, 440, 922–925.

van Heerwaarden LM, Toet S, van Logtestijn RSP, Aerts R (2005) Internal nitrogen dynamics in the graminoid Molinia caerulea under higher N supply and elevated CO2 concentrations. Plant and Soil, 277, 255–264.

2004 and before:
Beier, C. (2004) Interactions of elevated CO2 and temperature on terrestrial ecosystem structure and functioning – the role of whole-ecosystem manipulation experiments. New Phytologist, 162, 243-245.

Beier, C., Emmett, B., Gundersen, P., Tietema, A., Penuelas, J., Estiarte, M., Gordon, C., Gorissen, A., Llorens, L., Roda, F. & Williams, D. (2004) Novel approaches to study climate change effects on terrestrial ecosystems in the field – drought and passive night time warming. Ecosystems, 7, 583–597.

Eissenstat DM, Wells CE, Yanai RD, Whitbeck JL. 2000. Building roots in a changing environment: implications for root longevity. New Phytologist 147: 33-42.

Gifford RM, Lutze JL, Barrett D. 1996. Global atmospheric change effects on terrestrial carbon sequestration: Exploration with a global C- and N-cycle model (CQUESTN). Plant and soil 187: 369-387.

Jonasson S, Michelsen A, Schmidt IK, Nielsen EV, Callaghan TV (1996) Microbial biomass C, N and P in two arctic soils and responses to addition of NPK fertilizer and sugar: implications for plant nutrient uptake. Oecologia, 106, 507–515.

Luo Y, Su B, Currie WS et al. (2004) Progressive nitrogen limitation of ecosystem responses to rising atmospheric carbon dioxide. BioScience, 54, 731–739.

Lutze JL, Gifford RM (2000) Nitrogen accumulation and distribution in Danthonia richardsonii swards in response to CO2 and nitrogen supply over four years of growth. Global Change Biology, 6, 1–12.

Lutze JL, Gifford RM, Adams HN (2000) Litter quality and decomposition in Danthonia richardsonii swards in response to CO2 and nitrogen supply over four years of growth. Global Change Biology, 6, 13–24.

Marion GM, Hastings SJ, Oberbauer SF, Oechel WC (1989) Soil-plant element relationships in a tundra ecosystem. Holarctic Ecology, 12, 296–303.

Miglietta, F., Peressotti, A., Vaccari, F.P., Zaldei, A., deAngelis, P. & Scarascia-Mugnozza, G. (2001) Free-air CO2 enrichment (FACE) of a poplar plantation: the POPFACE fumigation system. New Phytologist, 150, 465–476.

Rastetter EB, Agren GI, Shaver GR (1997) Responses of N-limited ecosystems to increased CO2: a balanced-nutrition, coupled-element-cycles model. Ecological Applications, 7, 444–460.