Tomáš Hájek

Personal Page of Tomáš Hájek

University of South Bohemia > Faculty of Science > Dpt. of Experimantal Plant Biology
Branišovská 1760, CZ-370 01 České Budějovice, Czech Republic
(tel.: +420 387 772 342)   GSM: +420 608 327 216

About Me

I am a plant ecologist at the University of South Bohemia, Faculty of Science and at the Institute of Botany of AS CR, Plant Ecology Section.

My main research activity is focused on ecology and ecophysiology of peat mosses (Sphagnum): stress ecophysiology, mineral nutrition, desiccation (in)tolerance, photosynthesis, decomposition & litter quality, etc.


Born: 1976
• 1996–1999: Bachelor degree, Faculty of Biological Sciences, University of South Bohemia
Thesis: Surface temperatures in a bog and their modeling.  (in Czech)
• 1999–2002: Master degree in Botany, at the same place
Thesis: Sphagnum production and decomposition on a mountain raised bog.  (in Czech)
• 2002–2008: PhD. degree in Ecology, Faculty of Science, University of South Bohemia
Thesis: Ecophysiological adaptations of coexisting Sphagnum mosses.  
• 2003–now: Institute of Botany, Academy of Sciences of the Czech Republic
• 2005–now: Department of Experimental Plant Biology, Faculty of Science, Univ. S. Bohemia
• Basic course of plant physiology at Faculty of Science.
• Plant physiology (photosynthesis, water relations – exercises) at Faculty of Science.

Research Activities



Májeková M., Martínková J. & Hájek T. (2019): Grassland plants show no relationship between leaf drought tolerance and soil moisture affinity, but rapidly adjust to changes in soil moisture. Functional Ecology 33: 774–785.


Bjorkman A.D., Myers-Smith I.H., Elmendorf S.C., Normand S., Thomas H.J.D. et al. (2018): Tundra Trait Team: A database of plant traits spanning the tundra biome. Global Ecology and Biogeography 27: 1402–1411.    

Světlíková P., Hájek T. & Těšitel J. (2018): Water-stress physiology of Rhinanthus alectorolophus, a root-hemiparasitic plant. PLoS ONE 13: e0200927.    

Bengtsson F., Rydin H. & Hájek T. (2018): Biochemical determinants of litter quality in 15 species of Sphagnum. Plant and Soil 425: 161–176.    

Světlíková P., Hájek T. & Těšitel J. (2018): A hemiparasite in the forest understorey: photosynthetic performance and carbon balance of Melampyrum pratense. Plant Biology 20: 50–58.


Vicherová E., Hájek M., Šmilauer P. & Hájek T. (2017): Sphagnum establishment in alkaline fens: importance of weather and water chemistry. Science of the Total Environment 580: 1429–1438.

Korrensalo A., Alekseychik P., Hájek T., Rinne J., Vesala T., Mehtätalo L., Mammarella I. & Tuittila E.-S. (2017): Species-specific temporal variation in photosynthesis as a moderator of peatland carbon sequestration. Biogeosciences 14: 257–269.


Korrensalo, A., Hájek, T., Vesala, T., Mehtätalo, L. & Tuittila, E-S. (2016): Variation in photosynthetic properties among bog plants. Botany 94: 1127–1039.

Pichrtová M., Hájek T. & Elster J. (2016): Annual development of mat-forming conjugating green algae Zygnema spp. in hydro-terrestrial habitats in the Arctic. Polar Biology 39: 1653–1662.

Pichrtová M., Arc E., Stöggl W., Kranner I., Hájek T., Hackl H. & Holzinger A. (2016): Formation of lipid bodies and fatty acid composition changes upon pre-akinete formation in arctic and Antarctic Zygnema (Zygnematophyceae, Streptophyta) strains. FEMS Microbiology Ecology 92, 9 pp.

Plesková Z., Jiroušek M., Peterka T., Hájek T., Dítě D., Hájková P., Navrátilová J., Šímová A., Syrovátka V. & Hájek M. (2016): Testing inter-regional variation in pH niches of fen mosses. Journal of Vegetation Science 27: 352–364.


Hájek M., Jiroušek M., Navrátilová J., Horodyská E., Peterka T., Plesková Z., Navrátil J., Hájková P. & Hájek T. (2015): Changes in the moss layer of Czech fens indicate early succession triggered by nutrient enrichment. Preslia 87: 279–301.

Světlíková P., Hájek T. & Těšitel J. (2015): Hydathode trichomes actively secreting water from leaves play a key role in the physiology and evolution of root-parasitic rhinanthoid Orobanchaceae. Annals of Botany 116: 61–68.

Vicherová E., Hájek M. & Hájek T. (2015): Calcium intolerance of fen mosses: physiological evidence, effects of nutrient availability and successional drivers. Perspectives in Plant Ecology, Evolution and Systematics 17: 347–359.

Mikulášková E., Hájek M., Veleba A., Johnson M.G., Hájek T. & Shaw J.A. (2015): Local adaptations in bryophytes revisited: The genetic structure of the calcium-tolerant peatmoss Sphagnum warnstorfii along geographical and pH gradients. Ecology and Evolution 5: 229–242.


Gonneau C., Jersáková J., de Tredern E., Till-Bottraud I., Saarinen K., Sauve M., Roy M., Hájek T. & Selosse M.-A. (2014): Photosynthesis in perennial mixotrophic Epipactis spp. (Orchidaceae) contributes more to shoot and fruit biomass than to hypogeous survival. Journal of Ecology, 102: 1183–1194.

Hájek M., Plesková Z., Syrovátka V., Peterka T., Laburdová J., Kintrová K., Jiroušek M. & Hájek T. (2014): Patterns in moss element concentrations in fens across species, habitats, and regions. Perspectives in Plant Ecology, Evolution and Systematics, 16: 203–218.

Pichrtová M., Hájek T. & Elster J. (2014): Osmotic stress and recovery in field populations of Zygnema sp. (Zygnematophyceae, Streptophyta) on Svalbard (High Arctic) subjected to natural desiccation. FEMS Microbiology Ecology, 89: 270–280.

Hájek T. & Vicherová E. (2014): Desiccation tolerance of Sphagnum revisited: A puzzle resolved. Plant Biology, 16: 765–773.

Kubásek J., Hájek T. & Glime J.M. (2014): Bryophyte photosynthesis in sunflecks: greater relative induction rate than in tracheophytes. Journal of Bryology, 36: 110–117.

Hájek T. (2014). Physiological Ecology of Peatland Bryophytes. In Hanson D.T. & Rice S.K. (Eds.): Photosynthesis in Bryophytes and Early Land Plants, Advances in Photosynthesis and Respiration, 37: 233–252.

Kangas L., Maanavilja L., Hájek T., Juurola E., Chimner R.A., Mehtätalo L. & Tuittila E.-S. (2014): Photosynthetic traits of Sphagnum and feather moss species in undrained, drained and rewetted boreal spruce swamp forests. Ecology and Evolution, 4: 381–396.  

Latzel V., Janeček Š., Hájek T. & Klimešová J. (2014): Biomass and stored carbohydrate compensation after above-ground biomass removal in a perennial herb: Does environmental productivity play a role? Folia Geobotanica, 49: 17–29.


Macková H., Hronková M., Dobrá J., Turečková V., Novák O., Lubovská Z., Motyka V., Haisel D., Hájek T., Prášil I.T., Gaudinová A., Štorchová H., Ge E., Werner T., Schmülling T. & Vaňková R. (2013): Enhanced drought and heat stress tolerance of tobacco plants with ectopically enhanced cytokinin oxidase/dehydrogenase gene expression. Journal of Experimental Botany 64: 2805–2815.    


Elster J., Kvíderová J., Hájek T., Láska K. & Šimek M. (2012): Impact of warming on Nostoc colonies (Cyanobacteria) in a wet hummock meadow, Spitsbergen. Polish Polar Research 33: 395–420.

Urbanová Z., Picek T., Hájek T., Bufková I. & Tuittila E.-S. (2012): Vegetation and carbon gas dynamics under a changed hydrological regime in central European peatlands. Plant Ecology & Diversity 5: 89–103.


Laine A.M., Juurola E., Hájek T. & Tuittila E.-S. (2011): Sphagnum growth and ecophysiology during mire succession. Oecologia 167: 1115–1125.  

Laiho R., Ojanen P., Ilomets M., Hájek T. & Tuittila E.-S. (2011): Moss production in a boreal, forestry-drained peatland. Boreal Environment Research 16: 441–449.  

Hájek T., Ballance S., Limpens J., Zijlstra M. & Verhoeven J.T.A. (2011): Cell-wall polysaccharides play an important role in decay resistance of Sphagnum and actively depressed decomposition in vitro. Biogeochemistry 103: 45–57.  


Latzel V., Klimešová J., Hájek T., Gómez S. & Šmilauer P. (2010): Maternal effects alter progeny’s response to disturbance and nutrients in two Plantago species. Oikos 119: 1700–1710.  

Hájek T. & Adamec L. (2010): Photosynthesis and dark respiration of leaves of terrestrial carnivorous plants. Biologia 65: 69–74.  

Chrastný V., Komárek M. & Hájek T. (2010): Lead contamination of an agricultural soil in the vicinity of a shooting range. Environmental Monitoring and Assessment 162: 37–146.  


Hájek T. (2009): Habitat and species controls on Sphagnum production and decomposition in a mountain raised bog. Boreal Environment Research 14: 947–958.  

Latzel V., Hájek T., Klimešová J. & Gómez S. (2009): Nutrients and disturbance history in two Plantago species: maternal effects as a clue for observed dichotomy between resprouting and seeding strategies. Oikos 118: 1669–1678.    

Hájek T., Tuittila E.-S., Ilomets M. & Laiho R. (2009): Light responses of mire mosses – a key to survival after water-level drawdown? Oikos 118: 240–250.  

Hájek T. & Adamec L. (2009): Mineral nutrient economy in competing species of Sphagnum mosses. Ecological Research 24: 291–302.  

2008 and earlier

Hájek T. & Beckett R.P. (2008): Effect of water content components on desiccation and recovery in Sphagnum mosses. Annals of Botany 101: 165–173.  

Bragazza L., Freeman C., Jones T., Rydin H., Limpens J., Fenner N., Ellis T., Gerdol R., Hájek M., Hájek T., Iacumin P., Kutnar L., Tahvanainen T. & Toberman H. (2006): Atmospheric nitrogen deposition promotes carbon loss from peat bogs. Proceedings of the National Academy of Sciences of the USA (PNAS) 103: 19386–19389.  

Bragazza L., Limpens J., Gerdol R., Grosvernier P., Hájek M., Hájek T., Hájková P., Hansen I., Iacumin, Kutnar L., Rydin H. & Tahvanainen T. (2005): Nitrogen concentration and δ15N signature of ombrotrophic Sphagnum mosses at different N deposition levels in Europe. Global Change Biology 11: 106–114.  

Bragazza L., Tahvanainen T., Kutnar L., Rydin H., Limpens J., Hájek M., Grosvernier P., Hájek T., Hájková P., Hansen I., Iacumin P. & Gerdol R. (2004): Nutritional constraints in ombrotrophic Sphagnum plants under increasing atmospheric nitrogen deposition in Europe. New Phytologist 163: 609–616.  

Some conference presentations

Hájek T. Hummocks in the area of Petuniabukta, central Svalbard. What is the role of vegetation in their development? Polar Ecology Conference 2012, České Budějovice, October 2012. Poster presentation.  

Hájek T. Calcium in/tolerance in Sphagnum – what is the role of other nutrients? 5th International Meeting on the Biology of Sphagnum, Tallinn, August 2012. Poster presentation.

Vicherová E. & Hájek T. Desiccation tolerance of Sphagnum: A solved puzzle? Joint Meeting of Society of Wetland Scientists, WETPOL, and Wetland Biogeochemistry Symposium, Prague, July 2011. Poster presentation.

Hájek T., Kvíderová J., Elster J. & Šimek M. Seasonal dynamics of photosynthetic and N2-fixation activity of cyanobacterium Nostoc commune s.l. in wet hummock tundra (Central Svalbard, High Arctic). MicroPerm Workshop, Potsdam, November 2010. Poster presentation.  

Hájek T., Ballance S., Limpens J., Zijlstra M. & Verhoeven J.T.A. Sphagnum specific structural polysaccharides play an important role in decay resistance and active depression of decomposition in bogs. Carbon in Peatlands, Prague, September 2009. Poster presentation.  

Hájek T. Decomposition properties of peat moss (Sphagnum) litter. 2nd Annual Meeting of the Society of Wetland Scientists – Europe, Třeboň, June 2007. Oral presentation.

Hájek T., Tuittila E.-S., Laiho R. & Ilomets M. Chronic photoinhibition plays only a minor role in the world’s most successful bryophyte genus. Photosynthesis and Stress, Brno, September 2005. Poster presentation.  

Hájek T. Abiotic stress ecophysiology in Sphagnum mosses; effects of elevated irradiance and temperature. Xth Days of Plant Physiology, Bratislava, September 2004. Poster presentation.

Hájek T. Sphagnum production and decomposition in a mountain raised bog. The Third International Symposium on the Biology of Sphagnum “Sphagnum 2002”, Uppsala, Trondheim, August 2002. Poster presentation.  

Projects, Grants

T. Hájek, Z. Urbanová: Decay resistance of Sphagnum – biochemical causes and consequences. 2018–2020 (Czech Grant Foundation).

T. Hájek, M. Hájek, E. Mikulášková: Calcium tolerance in Sphagnum, its physiological and genetic backgrounds, and consequences in mire ecology. 2010–2014 (Czech Grant Foundation).

T. Hájek: Mineral nutrient economy in Sphagnum mosses. 2005–2007 (GA AV ČR).

Just a few Sphagnum pictures...

Rokytecká slať Sphagnum mosses Sphagnum magellanicum cells

... and some slides from South Africa:

Namaqualand Leucospermum Spider Orchid

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