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Alf Ekblad

Tjänstetitel: Professor Organisation: Institutionen för naturvetenskap och teknik

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Telefon: 019 303528

Rum: B2307

Alf Ekblad

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Om Alf Ekblad

Jag är professor i biologi med inriktning ekosystemekologi. Mina forskning berör främst: växt-mark interaktioner, växt-mikrobinteraktioner, stabila isotoper i ekologisk forskning samtkretslopp av kol och kväve i skogsekosystem. Jag har även bedrivit studier i jordbrukssystem. Jag är bland annat intresserad av hur förhöjd koldioxidhalt och ett förändrat klimat samt kvävegödsling/kvävnedfall påverkar kolomsättning och uppbyggnad av kol- och kväveförrådet i marken. Betydelsen av mykorrhizamycel för uppbyggnaden av kol i marken har varit i fokus på senare år. Denna forskning sker delvis i samarbete med forskare i den starka forskningsmiljön IMPRESS (Länk till IMPRESS hemsida).

Jag har ett brett ekologiskt intresse samarbetar med flera andra forskare i Sverige och utomlands i ett flertal olika projekt. I många av de projekten värdesätts mitt isotoplaboratorium och mina kunskaper då det gäller användningen av stabila isotoper i olika ekologiska sammanhang.

Se en länk till Google scholar (ger en komplett lista av mina publikationer) här: Mina publikationer i Google scholar

Publikationer

Artiklar i tidskrifter |  Artiklar, forskningsöversikter |  Kapitel i böcker, del av antologier |  Konferensbidrag |  Manuskript | 

Artiklar i tidskrifter

Hagenbo, A. , Clemmensen, K. E. , Finlay, R. D. , Kyaschenko, J. , Lindahl, B. D. , Fransson, P. & Ekblad, A. (2017). Changes in turnover rather than production regulate biomass of ectomycorrhizal fungal mycelium across a Pinus sylvestris chronosequence. New Phytologist, 214 (1), 424-431.
Ohlsson, K. E. A. , Yang, B. , Ekblad, A. , Boman, C. , Nyström, R. & Olofsson, T. (2017). Stable carbon isotope labelled carbon dioxide as tracer gas for air change rate measurement in a ventilated single zone. Building and Environment, 115, 173-181.
Ekblad, A. , Mikusinska, A. , Ågren, G. I. , Menichetti, L. , Wallander, H. , Vilgalys, R. , Bahr, A. & Eriksson, U. (2016). Production and turnover of ectomycorrhizal extramatrical mycelial biomass and necromass under elevated CO2 and nitrogen fertilization. New Phytologist, 211 (3), 874-885.
Menichetti, L. , Ekblad, A. & Kätterer, T. (2015). Contribution of roots and amendments to soil carbon accumulation within the soil profile in a long-term field experiment in Sweden. Agriculture, Ecosystems & Environment, 200, 79-87.
Menichetti, L. , Houot, S. , Van Oort, F. , Kätterer, T. , Christensen, B. T. , Chenu, C. C. , Barré, P. , Vasilyeva, N. A. & et al. (2015). Increase in soil stable carbon isotope ratio relates to loss of organic carbon: results from five long-term bare fallow experiments. Oecologia, 177 (3), 811-821.
Johansson, V. A. , Mikusinska, A. , Ekblad, A. & Eriksson, O. (2015). Partial mycoheterotrophy in Pyroleae: nitrogen and carbon stable isotope signatures during development from seedling to adult. Oecologia, 177 (1), 203-211.
Ladd, B. , Peri, P. L. , Pepper, D. A. , Silva, L. C. R. , Sheil, D. , Bonser, S. P. , Laffan, S. W. , Amelung, W. & et al. (2014). Carbon isotopic signatures of soil organic matter correlate with leaf area index across woody biomes. Journal of Ecology, 102 (6), 1606-1611.
Boberg, J. B. , Finlay, R. D. , Stenlid, J. , Ekblad, A. & Lindahl, B. D. (2014). Nitrogen and Carbon Reallocation in Fungal Mycelia during Decomposition of Boreal Forest Litter. PLoS ONE, 9 (3), e92897.
Dawes, M. A. , Hagedorn, F. , Handa, I. T. , Streit, K. , Ekblad, A. , Rixen, C. , Körner, C. & Hättenschwiler, S. (2013). An alpine treeline in a carbon dioxide-rich world: synthesis of a nine-year free-air carbon dioxide enrichment study. Oecologia, 171 (3), 623-637.
Berglund, S. L. , Agren, G. I. & Ekblad, A. (2013). Carbon and nitrogen transfer in leaf litter mixtures. Soil Biology and Biochemistry, 57, 341-348.
Bahr, A. , Ellström, M. , Akselsson, C. , Ekblad, A. , Mikusinska, A. & Wallander, H. (2013). Growth of ectomycorrhizal fungal mycelium along a Norway spruce forest nitrogen deposition gradient and its effect on nitrogen leakage. Soil Biology and Biochemistry, 59, 38-48.
Hagedorn, F. , Hiltbrunner, D. , Streit, K. , Ekblad, A. , Lindahl, B. , Miltner, A. , Frey, B. , Handa, I. T. & et al. (2013). Nine years of CO2 enrichment at the alpine treeline stimulates soil respiration but does not alter soil microbial communities. Soil Biology and Biochemistry, 57, 390-400.
Lindwall, F. , Vowels, T. , Ekblad, A. & Bjork, R. G. (2013). Reindeer grazing has contrasting effect on species traits in Vaccinium vitis-idaea L. and Bistorta vivipara (L.) Gray. Acta Oecologica, 53, 33-37.
Mikusinska, A. , Persson, T. , Taylor, A. F. S. & Ekblad, A. (2013). Response of ectomycorrhizal extramatrical mycelium production and isotopic composition to in-growth bag size and soil fauna. Soil Biology and Biochemistry, 66, 154-162.
Clemmensen, K. E. , Bahr, A. , Ovaskainen, O. , Dahlberg, A. , Ekblad, A. , Wallander, H. , Stenlid, J. , Finlay, R. D. & et al. (2013). Roots and associated fungi drive long-term carbon sequestration in boreal forest. Science, 339 (6127), 1615-1618.
Wallander, H. , Ekblad, A. & Bergh, J. (2011). Growth and carbon sequestration by ectomycorrhizal fungi in intensively fertilized Norway spruce forests. Forest Ecology and Management, 262 (6), 999-1007.
Hyvönen, R. , Ågren, G. I. , Linder, S. , Persson, T. , Cotrufo, M. F. , Ekblad, A. , Freeman, M. , Grelle, A. & et al. (2007). The likely impact of elevated [CO2], nitrogen deposition, increased temperature and management on carbon sequestration in temperate and boreal forest ecosystems: a literature review. New Phytologist, 173 (3), 463-480.
Comstedt, D. , Boström, B. , Marshall, J. , Holm, A. , Slaney, M. , Linder, S. & Ekblad, A. (2006). Effects of elevated atmospheric carbon dioxide and temperature on soil respiration in a boreal forest using δ13C as a labeling tool. Ecosystems (New York. Print), 9 (8), 1266-1277.
Ekblad, A. , Boström, B. , Holm, A. & Comstedt, D. (2005). Forest soil respiration rate and d13C is regulated by recent above ground weather conditions. Oecologia, 143 (1), 136-142.
Persson, J. , Högberg, P. , Ekblad, A. , Högberg, M. N. , Nordgren, A. & Näsholm, T. (2003). Nitrogen acquisition from inorganic and organic sources by boreal forest plants in the field. Oecologia, 137 (2), 252-257.
Franklin, O. , Högberg, P. , Ekblad, A. & Ågren, G. I. (2003). Pine forest floor carbon accumulation in response to N and PK additions: Bomb C-14 modelling and respiration studies. Ecosystems (New York. Print), 6 (7), 644-658.
Nyberg, G. , Ekblad, A. , Buresh, R. J. & Högberg, P. (2002). Short-term patterns of carbon and nitrogen mineralisation in a fallow field amended with green manures from agroforestry trees. Biology and Fertility of Soils, 36 (1), 18-25.
Lundberg, P. , Ekblad, A. & Nilsson, M. (2001). C-13 NMR spectroscopy studies of forest soil microbial activity: glucose uptake and fatty acid biosynthesis. Soil Biology and Biochemistry, 33 (4-5), 621-632.
Högberg, P. , Nordgren, A. , Buchmann, N. , Taylor, A. F. S. , Ekblad, A. , Högberg, M. N. , Nyberg, G. , Ottosson-Löfvenius, M. & et al. (2001). Large-scale forest girdling shows that current photosynthesis drives soil respiration. Nature, 411 (6839), 789-792.
Nyberg, G. , Ekblad, A. , Buresh, R. J. & Högberg, P. (2000). Respiration from C-3 plant green manure added to a C-4 plant carbon dominated soil. Plant and Soil, 218 (1-2), 83-89.
Sundberg, B. , Ekblad, A. , Näsholm, T. & Palmqvist, K. (1999). Lichen respiration in relation to active time, temperature, nitrogen and ergosterol concentrations. Functional Ecology, 13 (1), 119-125.
Högberg, P. , Högberg, M. N. , Quist, M. E. , Ekblad, A. & Näsholm, T. (1999). Nitrogen isotope fractionation during nitrogen uptake by ectomycorrhizal and non-mycorrhizal Pinus sylvestris. New Phytologist, 142 (3), 569-576.
Näsholm, T. , Ekblad, A. , Nordin, A. , Giesler, R. , Högberg, M. & Högberg, P. (1998). Boreal forest plants take up organic nitrogen. Nature, 392 (6679), 914-916.
Ekblad, A. , Wallander, H. & Näsholm, T. (1998). Chitin and ergosterol combined to measure total and living fungal biomass in ectomycorrhizas. New Phytologist, 138 (1), 143-149.
Palmqvist, K. , Campbell, D. , Ekblad, A. & Johansson, H. (1998). Photosynthetic capacity in relation to nitrogen content and its partitioning in lichens with different photobionts. Plant, Cell and Environment, 21 (4), 361-372.
Högberg, P. & Ekblad, A. (1996). Substrate-induced respiration measured in situ in a C-3-plant ecosystem using additions of C-4-sucrose. Soil Biology and Biochemistry, 28 (9), 1131-1138.
Nilsson, C. , Ekblad, A. , Dynesius, M. , Backe, S. , Gardfjell, M. , Carlberg, B. , Hellqvist, S. & Jansson, R. (1994). A Comparison of Species Richness and Traits of Riparian Plants between a Main River Channel and Its Tributaries. Journal of Ecology, 82 (2), 281-295.
Ekblad, A. , Lundquist, P. , Sjöström, M. & Huss-Danell, K. (1994). Day-to-day variation in nitrogenase activity of alnus-incana explained by weather variables: a multivariate time-series analysis. Plant, Cell and Environment, 17 (3), 319-325.
Wingsle, G. , Mattson, A. , Ekblad, A. , Hällgren, J. & Selstam, E. (1992). Activities of glutathione reductase and superoxide dismutase in relation to changes of lipids and pigments due to ozone in seedlings of Pinus sylvestris (L.). Plant Science, 82 (2), 167-178.
Nilsson, C. , Ekblad, A. , Gardfjell, M. & Carlberg, B. (1991). Long-term effects of river regulation on river margin vegetation. Journal of Applied Ecology, 28 (3), 963-987.
Ekblad, A. , Huss-Danell, K. & Sjöström, M. (1990). Variation in nitrogenase activity explained by abiotic and biotic factors: a multivariate study. Physiologia Plantarum: An International Journal for Plant Biology, 79 (2), A77-A77.
Huss-Danell, K. , Lundquist, P. & Ekblad, A. (1989). Growth and acetylene reduction activity by intact plants of Alnus incana under field conditions. Plant and Soil, 118 (1-2), 61-73.

Artiklar, forskningsöversikter

Deckmyn, G. , Meyer, A. , Smits, M. M. , Ekblad, A. , Grebenc, T. , Komarov, A. & Kraigher, H. (2014). Simulating ectomycorrhizal fungi and their role in carbon and nitrogen cycling in forest ecosystems. Canadian Journal of Forest Research, 44 (6), 535-553.
Wallander, H. , Ekblad, A. , Godbold, D. L. , Johnson, D. , Bahr, A. , Baldrian, P. , Bjork, R. G. , Kieliszewska-Rokicka, B. & et al. (2013). Evaluation of methods to estimate production, biomass and turnover of ectomycorrhizal mycelium in forests soils: a review. Soil Biology and Biochemistry, 57, 1034-1047.
Ekblad, A. , Wallander, H. , Godbold, D. L. , Cruz, C. , Johnson, D. , Baldrian, P. , Björk, R. , Epron, D. & et al. (2013). The production and turnover of extramatrical mycelium of ectomycorrhizal fungi in forest soils: role in carbon cycling. Plant and Soil, 366 (1-2), 1-27.

Kapitel i böcker, del av antologier

Wallander, H. & Ekblad, A. (2015). The Importance of Ectomycorrhizal Networks for Nutrient Retention and Carbon Sequestration in Forest Ecosystems. I: Horton, Thomas R., Mycorrhizal networks (ss. 69-90). . Springer.
Högberg, P. , Ekblad, A. , Nordgren, A. , Plamboeck, A. H. , Ohlsson, A. , Bhupinderpal-Singh, S. & Högberg, M. (2005). Factors determining the 13C abundance of soil-respired CO2 in Boreal forests. I: Lawrence B. Flanagan, James R. Ehleringer, Diane E. Pataki, Stable isotopes and biosphere-atmosphere interactions: processes and biological controls (ss. 47-68). . Elsevier.

Konferensbidrag

Ekblad, A. , Godbold, D. L. & Wallander, H. (2010). The ectomycorrhizal mycelium and its importance in carbon cycling: strengths and weaknesses in current knowledge. I: Ivano Brunner, Below ground carbon turnover in European forests state of the art. Konferensbidrag vid COST Action FP0803 Conference, January 26–28, 2010, WSL, Birmensdorf, Switzerland (ss. 23-30). Birmensdorf: Swiss Federal Institute for Forest, Snow and Landscape Research WSL.

Manuskript