Submitted manuscripts

Ercan FEZ; Mikola J; Silfver TH; Myller K; Vainio E; Słowińska S; Słowiński M; Lamentowicz M; Blok D; Wagner-Cremer F. Effects of experimental warming on Betula nana epidermal cell growth tested over its maximum climatological growth range. Submitted to PLOS ONE

Ghimire R, Silfver T, Myller K, Oksanen E, Holopainen J, Mikola J. BVOC emissions from a Subarctic ecosystem as controlled by insect herbivore pressure and temperature. Submitted to Ecosystems.

Mikola J, Koikkalainen K, Rasehorn M, Silfver T, Paaso U, Rousi M. Genotypic traits and tradeoffs of fast growth in silver birch, a pioneer tree. Submitted to Oecologia.


Robinson S, Mikola J, Ovaskainen O, O’Gorman, E. Temperature effects on the temporal dynamics of a subarctic invertebrate community. Journal of Animal Ecology, in press.

Possen BJMH, Rousi M, Keski-Saari S, Silfver T, Kontunen-Soppela S, Oksanen E, Mikola J. New evidence for the importance of soil nitrogen on the survival and adaptation of birch to climate warming. Ecosphere, in press.

Heiskanen L, Tuovinen J-P, Räsänen A, Virtanen T, Juutinen S, Lohila A, Penttilä T, Linkosalmi M, Mikola J, Laurila T, Aurela M. Carbon dioxide and methane exchange of a patterned subarctic fen during two contrasting growing seasons. Biogeosciences 18: 873-896.


Silfver T, Heiskanen L, Aurela M, Myller K, Karhu K, Meyer N, Tuovinen J-P, Oksanen E, Rousi M, Mikola J. Insect herbivory dampens Subarctic birch forest C sink response to warming. Nature Communications 11: 2529.

Scopetani C, Chelazzi D, Mikola J, Leiniö V, Heikkinen R, Cincinelli A, Pellinen J. Olive oil-based method for the extraction, quantification and identification of microplastics in soil and compost samples. Science of the Total Environment 733: 139338.

Hagner MM, Hyvönen T, Mikola J, Kemppainen R, Lindqvist B, Suojala-Ahlfors T, Tiilikkala K. Efficiency of a novel biodegradable pyrolysis liquid-amended mulch in weed control. Weed Research 60: 182-193.


Hagner, M., Mikola, J., Saloniemi, I., Saikkonen, K., Helander, M. Effects of a glyphosate-based herbicide on soil animal trophic groups and associated ecosystem functioning in a northern agricultural field. Scientific Reports 9: 8540.

Rousi, M., Possen, B.J.M.H, Pulkkinen, P., Mikola, J. Using long-term data to reveal the geographical variation in timing and quantity of pollen and seed production in silver and pubescent birch in Finland: implications for gene flow, hybridization and responses to climate warming. Forest Ecology and Management 438: 25-33.

Tuovinen, J.-P., Aurela, M., Hatakka, J., Räsänen, A., Virtanen, T., Mikola, J., Ivakhov, V., Kondratyev, V., Laurila, T. Interpreting eddy covariance data from heterogeneous Siberian tundra: land-cover-specific methane fluxes and spatial representativeness. Biogeosciences 16: 255-274.


Mikola, J., Virtanen, T., Linkosalmi, M., Vähä, E., Nyman, J., Postanogova, O., Räsänen, A., Kotze, D.J., Laurila, T., Juutinen, S., Kondratyev, V. & Aurela, M. Spatial variation and linkages of soil and vegetation in the Siberian Arctic tundra – coupling field observations with remote sensing data. Biogeosciences 15: 2781-2801.

Silfver, T., Kontro, M., Paaso, U., Karvinen, H., Keski-Saari, S., Keinänen, M., Rousi, M. & Mikola, J. Intrapopulation genotypic variation in leaf litter chemistry does not control microbial abundance and litter mass loss in silver birch, Betula pendula Plant and Soil 426: 253-266.

Mikola, J., Silfver, T., Paaso. U., Possen, B.J.M.H. & Rousi, M. Leaf N resorption efficiency and litter N mineralization rate have a genotypic trade-off in a silver birch population. Ecology 99: 1227-1235.

Robinson, S.I., McLaughlin, Ó.B., Marteinsdóttir, B. & O’Gorman E.J. Soil temperature effects on the structure and diversity of plant and invertebrate communities in a natural warming experiment. Journal of Animal Ecology 87: 634-646.

Mikola, J., Silfver, T. & Rousi M. Mountain birch facilitates Scots pine in the northern treeline – does improved soil fertility have a role? Plant and Soil 423: 205–213.

Rousi, M., Possen, B.J.M.H., Ruotsalainen, S., Silfver, T. & Mikola, J. Temperature and soil fertility as regulators of tree line Scots pine growth and survival – implications for the acclimation capacity of northern populations. Global Change Biology 24: e545–e559.

Viippola, V., Whitlow, T.H., Zhao, W., Yli-Pelkonen, V., Mikola, J., Pouyat, R. & Setälä H. The effects of trees on air pollutant levels in peri-urban near-road environments. Urban Forestry & Urban Greening 30: 62–71.


Nuutinen, V., Butt, K., Hyväluoma, J., Ketoja, E. & Mikola, J. Soil faunal and structural responses to the settlement of a semi-sedentary earthworm Lumbricus terrestris in an arable clay field. Soil Biology & Biochemistry 115: 285–296

Juutinen, S., Virtanen, T., Kondratyev, V., Laurila, T., Linkosalmi, M., Mikola, J., Nyman, J., Räsänen, A., Tuovinen, J.-P. & Aurela, M. Spatial variation and seasonal dynamics of leaf-area index in the arctic tundra – implications for linking ground observations and satellite images. Environmental Research Letters 12: 095002

Paaso, U., Keski-Saari, S., Keinänen, M., Karvinen, H., Silfver, T., Rousi, M. & Mikola, J. Intrapopulation genotypic variation of foliar secondary chemistry during leaf senescence and litter decomposition in silver birch (Betula pendula). Frontiers in Plant Science 8: 1074

Salojärvi, J., Smolander, O.-P., Nieminen, K., Rajaraman, S., Safronov, O., Safdari, P., Lamminmäki, A., Immanen, J., Lan, T., Tanskanen, J., Rastas, P., Amiryousefi, A., Jayaprakash, B., Kammonen, J.I., Hagqvist, R., Eswaran, G., Aalto, M., Ahonen, V.H., Serra, J.A., Asiegbu, F.O., Barajas-Lopez, J.D., Blande, D., Blokhina, O., Blomster, T., Broholm, S., Brosché, M., Cui, F., Dardick, C., Ehonen, S.E., Elomaa, P., Escamez, S., Fagerstedt, K.V., Fujii, H., Gauthier, A., Gollan, P.J., Halimaa, P., Heino, P.I., Himanen, K., Hollender, C., Kangasjärvi, S., Kauppinen, L., Kelleher, C.T., Kontunen-Soppela, S., Koskinen, J.P., Kovalchuk, A., Kärenlampi, S.O., Kärkönen, A.K., Lim, K.-J., Leppälä, J., Macpherson, L., Mikola, J., Mouhu, K., Mähönen, A.P., Niinemets, Ü., Oksanen, E., Overmyer, K., Palva, E.T., Pazouki, L., Pennanen, V., Puhakainen, T., Poczai, P., Possen, B.J.H.M., Punkkinen, M., Rahikainen, M.M., Rousi, M., Ruonala, R., van der Schoot, C., Shapiguzov, A., Sierla, M., Sipilä, T.P., Sutela, S., Teeri, T.H., Tervahauta, A.I., Vaattovaara, A., Vahala, J., Vetchinnikova, L., Welling, A., Wrzaczek, M., Xu, E., Paulin, L.G., Schulman, A.H., Lascoux, M., Albert, V.A., Auvinen, P., Helariutta, Y. & Kangasjärvi, J. Genome sequencing and population genomic analyses provide insights into the adaptive landscape of silver birch. Nature Genetics 49: 904–912

Kasurinen, A., Silfver, T., Rousi, M. & Mikola, J. Warming and ozone exposure effects on silver birch (Betula pendula Roth) leaf litter quality, microbial growth and decomposition. Plant and Soil 414: 127–142


Simpanen, S., Dahl, M., Gerlach, M., Mikkonen, A., Malk, V., Mikola, J. & Romantschuk, M. 2016. Biostimulation proved to be the most efficient method in the comparison of in situ soil remediation treatments after a simulated oil spill accident. Environmental Science and Pollution Research 23: 25024–25038

Mikola, J., Helander, M. & Saikkonen, K. 2016. No effects of Epichloë endophyte infection on nitrogen cycling in meadow fescue (Schedonorus pratensis) grassland. Plant and Soil 405: 257–264

Simpanen, S. A., Mäkelä, R., Mikola, J., Silvennoinen, H. & Romantschuk, M. L. 2016. Bioremediation of creosote contaminated soil in both laboratory and field scale: investigating the ability of methyl-β-cyclodextrin to enhance biostimulation. International Biodeterioration and Biodegradation 106: 117–126


Silfver, T., Paaso, U., Rasehorn, M., Rousi, M. & Mikola, J. 2015. Genotype x Herbivore Effect on Leaf Litter Decomposition in Betula pendula Saplings: Ecological and Evolutionary Consequences and the Role of Secondary Metabolites. PLoS One 10(1): e0116806

Saikkonen, K., Mikola, J. & Helander, M. 2015. Endophytic phyllosphere fungi and nutrient cycling in terrestrial ecosystems. Current Science 109: 121–126

Nieminen, M., Hurme, T., Mikola, J., Regina, K. & Nuutinen, V. 2015. Impact of earthworm Lumbricus terrestris living sites on the greenhouse gas balance of no-till arable soil.Biogeosciences 12: 5481–5493

Silfver, T., Sinkkonen, A., Oksanen, E. & Rousi, M. 2015. Early shoot growth termination in Betula pendula is associated with the number of overwintering aphid eggs on boreal birches. Evolutionary Ecology 29: 157–167


Mikola, J., Paaso, U., Silfver, T., Autelo, M., Koikkalainen, K., Ruotsalainen, S. & Rousi, M. 2014. Growth and genotype x environment interactions in Betula pendula: can tree genetic variation be maintained by small-scale forest ground heterogeneity?
 Evolutionary Ecology 28: 811–828

Mikola, J., Sørensen, L. I. & Kytöviita, M-M. 2014. Plant removal disturbance and replant mitigation effects on the abundance and diversity of low-arctic soil biota.
 Applied Soil Ecology 82: 82–92

Silfver, T. H., Rousi, M., Oksanen, E. & Roininen, H. 2014. Genetic and environmental determinants of insect herbivore community structure in a Betula pendula population. F1000Research 3: 34

Possen, B. J. H. M., Rousi, M., Silfver, T., Anttonen, M. J., Ruotsalainen, S., Oksanen, E. & Vapaavuori, E. 2014. Within-stand variation in silver birch (Betula pendula Roth) phenology. Trees: Structure and Function 28: 1801–1812


Silfver, T. H., Autelo, M. M., Paaso, U., Koikkalainen, R. & Mikola, J. 2013. Use of an insecticide in field-scale plant-herbivore studies: no side effects of synthetic pyrethrin on Betula pendula growth or chemistry. Annales Botanici Fennici 50: 337–346


Nykänen, A., Kontio, H., Klutas, O., Penttinen, O-P., Kostia, S., Mikola, J. & Romantschuk, M. 2012. Increasing lake water and sediment oxygen levels using slow release peroxide. Science of the Total Environment 429: 317–324

Sinkkonen, A. T., Somerkoski, E., Paaso, U., Holopainen, J. K., Rousi, M. & Mikola, J. 2012. Genotypic variation in yellow autumn leaf colours explains aphid load in silver birch.
 New Phytologist 195: 461–469

Mikola, J. & Saj, S. 2012. Impacts of trace amounts of labile C on plant N limitation vary from hour to week timescales. Biology and Fertility of Soils 48: 851–857

Hui, N., Liu, X-X., Kurola, J., Mikola, J. & Romantschuk, M. 2012. Lead (Pb) contamination alters richness and diversity of the fungal, but not the bacterial community in pine forest soil.
 Boreal Environment Research 17: 46–58


Nieminen, M., Ketoja, E., Mikola, J., Terhivuo, J., Siren, T. & Nuutinen, V. joulukuuta 2011. Local land use effects and regional environmental limits on earthworm communities in Finnish arable landscapes.
 Ecological Applications 21: 3162–3177


Bezemer, T. M., Fountain, M. T., Barea, J. M., Christensen, S., Dekker, S. C., Duyts, H., van Hal, R., Harvey, J. A., Hedlund, K., Maraun, M., Mikola, J., Mladenov, A. G., Robin, C., de Ruiter, P. C., Scheu, S., Setälä, H., Smilauer, P. & van der Putten, W. H. 2010. Divergent composition but similar function of soil food webs of individual plants: plant species and community effects. Ecology 91: 3027–3036

Nykänen, A., Hämäläinen, N., Kostia, S., Mikola, J. & Romantschuk, M. 2010. Reduction of Odorants in Swine Manure by Carbohydrate and Bacterial Amendments. Journal of Environmental Quality 39: 678–685


Mikola, J., Setälä, H., Virkajärvi, P., Saarijärvi, K., Ilmarinen, K., Voigt, W. & Vestberg, M. 2009. Defoliation and patchy nutrient return drive grazing effects on plant and soil properties in a dairy cow pasture. Ecological Monographs 79: 221–244

Pietikäinen, A. J., Mikola, J., Vestberg, M. & Setälä, H. 2009. Defoliation effects on Plantago lanceolata resource allocation and soil decomposers in relation to AM symbiosis and fertilization. Soil Biology & Biochemistry. 41: 2328–2335

Ilmarinen, K., Nissinen, K., Vestberg, M. & Mikola, J. 2009. Role of soil organisms in the maintenance of species-rich seminatural grasslands through mowing. Restoration Ecology 17: 78–88

Ilmarinen, K. & Mikola, J. 2009. Soil feedback does not explain mowing effects on vegetation structure in a semi-natural grassland. Acta Oecologica 35: 832–848

Saj, S., Mikola, J. & Flemming, E. 2009. Species-specific effects of live roots and shoot litter on soil decomposer abundances do not forecast plant litter-nitrogen uptake. Oecologia 161: 331–341

Ekelund, F., Saj, S., Vestergård, M., Bertaux, J. & Mikola, J. 2009. The “soil microbial loop” is not always needed to explain protozoan stimulation of plants. Soil Biology & Biochemistry 41: 2336–2342

Silfver, T. H., Roininen, H., Oksanen, E. & Rousi, M. 2009. Genetic and environmental determinants of silver birch growth and herbivore resistance. Forest Ecology and Management 257: 2145–2149

Riikonen, J., Mäenpää, M., Alavillamo, M., Silfver, T. H. & Oksanen, E. 2009. Interactive effect of elevated temperature and O3 on antioxidant capacity and gas exchange in Betula pendula saplings.
 Planta 230: 419–427

Häikiö, E., Makkonen, M., Julkunen-Tiitto, R., Sitte, J., Freiwald, V., Silfver, T. H., Pandey, V., Beuker, E., Holopainen, T. & Oksanen, E. 2009. Performance and secondary chemistry of two hybrid aspen (Populus tremula L. x Populus tremuloides Michx.) clones in long-term elevated ozone exposure. Journal of Chemical Ecology 35: 664–678

Sørensen, L. I., Mikola, J., Kytöviita, M-M. & Olofsson, J. 2009. Trampling and spatial heterogeneity explain decomposer abundances in a sub-arctic grassland subjected to simulated reindeer grazing. Ecosystems 12: 830–842


Silfver, T. H., Häikiö, E., Rousi, M., Holopainen, T. & Oksanen, E. 2008. Interactive effects of elevated ozone and springtime frost on growth and physiology of birch (Betula pendula) in field conditions. Trees: Structure and Function 22: 291–301

Sørensen, L. I., Mikola, J. & Kytöviita, M-M. 2008. Defoliation effects on plant and soil properties in an experimental low arctic grassland community – the role of plant community structure. Soil Biology & Biochemistry 40: 2596–2604

Ilmarinen, K., Mikola, J. & Vestberg, M. 2008. Do interactions with soil organisms mediate grass responses to defoliation? 
Soil Biology & Biochemistry 40: 894–905

Saj, S., Mikola, J. & Ekelund, F. 2008. Legume defoliation affects rhizosphere decomposers, but not the uptake of organic matter N by a neighbouring grass. Plant and Soil 311: 141–149

Birkhofer, K., Bezemer, T. M., Bloem, J., Bonkowski, M., Christensen, S., Dubois, D., Ekelund, F., Fließbach, A., Gunst, L., Hedlund, K., Mäder, P., Mikola, J., Robin, C., Setälä, H., Tatin-Froux, F., Putten, W. H. V. D. & Scheu, S. 2008. Long-term organic farming fosters below and aboveground biota: Implications for soil quality, biological control and productivity. 
Soil Biology & Biochemistry 40: 2297–2308

Sørense, L. I., Kytöviita, M-M., Olofsson, J. & Mikola, J. 2008. Soil feedback on plant growth in a sub-arctic grassland as a result of repeated defoliation.
 Soil Biology & Biochemistry 41: 2891–2897


Silfver, T., Mikola, J., Rousi, M., Roininen, H. & Oksanen, E. 2007. Leaf litter decomposition differs among genotypes in a local Betula pendula population. Oecologia 152: 707–714

Saj, S., Mikola, J. & Ekelund, F. 2007. Root-induced decomposer growth and plant N uptake are not positively associated among a set of grassland plants. Applied Soil Ecology 37: 215–222

Häikiö, E., Freiwald, V., Silfver, T. H., Beuker, E., Holopainen, T. & Oksanen, E. 2007. Impacts of elevated ozone and nitrogen on growth and photosynthesis of European aspen (Populus tremula) and hybrid aspen (P. tremula x P. tremuloides) clones. Canadian Journal of Forest Research 37: 2326–2336


Mikola, J. 2006. Book review of “Biological Diversity and Function in Soils / Bardgett, RD, MB Usher and DW Hopkins (Eds), 2005, Cambridge University Press”
. Écoscience. 13: 557

Dunn, R. M., Mikola, J., Bol, R. & Bardgett, R. D. 2006. Influence of microbial activity on plant-microbial competition for organic and inorganic nitrogen. Plant and Soil 289: 321–334


Mikola, J., Nieminen, M., Ilmarinen, K. & Vestberg, M. 2005. Belowground responses by AM fungi and animal trophic groups to repeated defoliation in an experimental grassland community.
 Soil Biology & Biochemistry 37: 1630–1639

Bazot, S., Mikola, J., Nguyen, C. & Robin, C. 2005. Defoliation-induced changes in carbon allocation and root soluble carbon concentration in field-grown Lolium perenne plants: do they affect carbon availability, microbes and animal trophic groups in soil?
 Functional Ecology 19: 886–896

Ilmarinen, K., Mikola, J., Nieminen, M. & Vestberg, M. 2005. Does plant growth phase determine the response of plants and soil organisms to defoliation?
 Soil Biology & Biochemistry. 37: 433–443

Mikola, J., Ilmarinen, K., Nieminen, M. & Vestberg, M. 2005. Long-term soil feedback on plant N allocation in defoliated grassland miniecosystems. 
Soil Biology & Biochemistry. 37: 899–904


Hokka, V., Mikola, J., Vestberg, M. & Setälä, H. M. 2004. Interactive effects of defoliation and an AM fungus on plants and soil organisms in experimental legume-grass communities. 
Oikos. 106: 73–84


Mikola, J., Bardgett, R. D. & Hedlund, K. 2002. Biodiversity, ecosystem functioning and soil decomposer food webs. In:
 Biodiversity and ecosystem functioning: synthesis and perspectives. Loreau, M., Naeem, S. & Inchausti, P. (eds.). Oxford: Oxford University Press, pp. 169–180

Mikola, J. & Kytöviita, M. M. 2002. Defoliation and the availability of currently assimilated carbon in the Phleum pratense rhizosphere.
 Soil Biology & Biochemistry 34: 1869–1874

Raffaelli, D., van der Putten, W. H., Persson, L., Wardle, D. A., Petchey, O., Koricheva, J., van der Heijden , M., Mikola, J. & Kennedy, T. 2002. Multi-trophic dynamics and ecosystem processes. In: Biodiversity and ecosystem functioning: synthesis and perspectives. Loreau , M., Naeem, S. & Inchausti, P. (eds.). Oxford: Oxford University Press, pp. 147–154

Mikola, J., Salonen, V. & Setälä, H. M. 2002. Studying the effects of plant species richness on ecosystem functioning: does the choice of experimental design matter?
 Oecologia 133: 594–598


Mikola, J., Yeates, G. W., Barker, G. M., Wardle, D. A. & Bonner, K. I. 2001. Effects of defoliation intensity on soil food-web properties in an experimental grassland community. Oikos 92: 333–343

Mikola, J., Yeates, G. W., Wardle, D. A., Barker, G. M. & Bonner, K. I. 2001. Response of soil food-web structure to defoliation of different plant species combinations in an experimental grassland community. Soil Biology & Biochemistry 33: 205–214

Mikola, J. & Sulkava, P. 2001. Responses of microbial-feeding nematodes to organic matter distribution and predation in experimental soil habitat.
 Soil Biology & Biochemistry 33: 811–817


Mikola, J., Barker, G. M. & Wardle, D. A. 2000. Linking above-ground and below-ground effects in autotrophic microcosms: effects of shading and defoliation on plant and soil properties. Oikos 89: 577–587


Setälä, H., Kulmala, P., Mikola, J. & Markkola, A. M. 1999. Influence of ectomycorrhiza on the structure of detrital food webs in pine rhizosphere. Oikos 87: 113–122

Mikola, J. & Setälä, H. 1999. Interplay of omnivory, energy channels and C availability in a microbial-based soil food web.
 Biology and Fertility of Soils 28: 212–218


Mikola, J. 1998. Effects of microbivore species composition and basal resource enrichment on trophic-level biomasses in an experimental microbial-based soil food web. Oecologia 117: 396–403

Setälä, H., Laakso, J., Mikola, J. & Huhta, V. 1998. Functional diversity of decomposer organisms in relation to primary production.
 Applied Soil Ecology 9: 25–31

Mikola, J. & Setälä, H. 1998. No evidence of trophic cascades in an experimental microbial-based soil food web.
 Ecology 79: 153–164

Mikola, J. 1998. On the role of varying species combinations in microcosm experiments: how to test ecological theories with soil food webs? Annales Zoologici Fennici 35: 63–66

Mikola, J. & Setälä, H. 1998. Productivity and trophic-level biomasses in a microbial-based soil food web.
 Oikos 82: 158–168

Mikola, J. & Setälä, H. 1998. Relating species diversity to ecosystem functioning: mechanistic backgrounds and experimental approach with a decomposer food web.
 Oikos. 83: 180–194


Komulainen, M. & Mikola, J. 1995. Soil processes as influenced by heavy-metals and the composition of soil fauna. Journal of Applied Ecology 32: 234–241


Mikola, J., Miettinen, M., Lehikoinen, E. & Lehtilä, K. 1994. The effects of disturbance caused by boating on survival and behavior of velvet scoter Melanitta fusca ducklings. Biological Conservation 67: 119–124