Mgr. Tomáš Jůza, Ph.D.

Job Position: Head of department - Department of Fish and Zooplankton Ecology (FZE) , Research Scientist - Department of Fish and Zooplankton Ecology (FZE)

Contact details

Phone: 733373139
Room: 214NB


My interest is focused especially on fry sampling in lakes and reservoirs using different
methods, development of freshwater trawling techniques and testing of trawl efficiency. I also studied distribution of different species of fish fry in horizontal (pelagial-littoral) and vertical (depth) scales. In my recent research I deal especially with distribution patterns of invasive gobiids and also newly stocked coregonids in recently created post mining lakes in the Czech Republic.

Scientific and professional experience:

Present job (full time): Scientist in the Department of Fish and Zooplankton Ecology of the Institute of Hydrobiology, Biology Centre of the Academy of Sciences of the Czech Republic, České Budějovice.

2005-2011-student-researcher at the Hydrobiological Institute of Academy of Sciences of CR

Web of Science:

ResearcherID: G-3159-2014, Total publications: 63, H-index: 15, Sum of times cited: 671, Without self citations: 493


2018-2022 – Biomanipulation as a tool for the improvement of water quality. Main investigator.

2023-2025 - 2023-2025 - Pikeperch fry production, their adaptability and optimalization of their stocking into open waters. Main investigator

Curriculum vitae

Date and place of birth:
5 April, 1981, České Budějovice, Czechoslovakia
Biology Centre, Czech Academy of Sciences, Institute of Hydrobiology, Na
Sádkách 7, 37005, České Budějovice, Czech Republic, email:
2000-2006 University of South Bohemia, Faculty of Biological Science, České Budějovice
2006-2011 Postgraduate study – Hydrobiological Institute AS CR and University of South
Bohemia, Faculty of Science
Professional qualification:
2003 – BSc. in Zoology, BSc.-thesis: Growth of fish in different types of waters in the Czech Republic
(supervisor: Dr. Jindřich Novák)
2006- MSc. in Zoology, MSc.-thesis: Sampling of open water fry communities by trawls (supervisor:
Dr. Jan Kubečka)
2011- Ph.D., Ph.D.-thesis: Distribution and density of pelagic 0+ fish in canyon-shaped reservoirs and
effectiveness of their sampling by fry trawls (supervisor: Dr. Jan Kubečka)
Scientific and professional experience:
Present job: Post doctoral fellow in the Department of Fish and Plankton Ecology – Fish Ecology Unit
(FishEcU; http//, Institute of Hydrobiology, Biology Centre AS CR v.v.i., České
Budějovice, Czech Republic.
2002-2006-employed at Hydrobiological Institute AS CR as student assistant worker
2008-participation in International trawling workshop (University of Rhode Island, USA).
2009-co-operation on adult trawl designing in Fisheries and Marine Institute of Memorial
University of Newfoundland (Canada).
2002-2014-participate in research of the fish stocks of many lakes and reservoirs in the Czech
Republic, Austria, Netherlands, Germany, Spain, Latvia and Puerto Rico.
Since 2002 till now-repeated scientific work (fry and adult trawling, purse seining, gill netting, beach
seining, fish ageing, electrofishing).
Participation on teaching courses at University of South Bohemia, Faculty of Science, České
Reviewing of manuscripts for scientific journals (Fisheries Research, Aquatic Ecology, Ecology of
Freshwater Fish, Advances in Limnology).
Member of advisory board of international conference Fish Sampling with Active Methods, Czech
Republic, 2010.



My lectures in all courses are focused on fish determination, fish ecology and methodology of fish sampling including practical demonstrations.

Total found: 132 records
Jůza T., Blabolil P., Čech M., Draštík V., Holubová M., Kočvara L., Kubečka J., Malinovskyi O., Policar T., Rychtecký P., Říha M., Sajdlová Z., Tušer M., Vašek M. (2024) Assessing the efficacy of spring stocking of pikeperch (Sander lucioperca) into a eutrophic reservoir. Lake and Reservoir Management 40 : 196-204.
DOI: 10.1080/10402381.2024.2333298
Jůza T., Muška M., Blabolil P., Kočvara L., Sajdlová Z., Dumpis J., Medne R. (2024) Spatial fish distribution in autumn in a shallow mesotrophic lake, assessed by hydroacoustic surveys, trawling, and beach seining. Journal of Fish Biology 104 : 1525–1536.
DOI: 10.1111/jfb.15691
Vejřík L., Vejříková I., Sajdlová Z., Kočvara L., Kolařík T., Bartoň D., Jůza T., Blabolil P., Peterka J., Čech M., Vašek M. (2024) A non-lethal stable isotope analysis of valued freshwater predatory fish using blood and fin tissues as alternatives to muscle tissue. PLoS ONE 19 : e0297070.
DOI: 10.1371/journal.pone.0297070
Blabolil P., Jůza T., Čech M., Peterka J. (2023) High mobility and flexibility in the habitat use of early juvenile pikeperch (Sander lucioperca) based on a mark-recapture experiment. Diversity 15 : 720.
DOI: 10.3390/d15060720
Blabolil P., Kajgrová L., Jůza T. (2023) Psí zuby najdeme i v našich vodách. [Dog teeth can be found in our waters.] Vodní hospodářství 10 : 22-24.
Blabolil P., Peterka J., Čech M., Jůza T. (2023) Influence of habitat on abundance, size and growth rate of pikeperch (Sander lucioperca) 0+ juveniles in a canyon-shaped reservoir. Ecology of Freshwater Fish 32 : 703–711.
DOI: 10.1111/eff.12709
Jůza T., Blabolil P., Čech M., Draštík V., Hejzlar J., Kočvara L., Muška M., Peterka J., Sajdlová Z., Tušer M., Vašek M., Kubečka J. (2023) Distribution patterns, annual density changes, growth and mortality of pikeperch [Sander lucioperca (L. 1758)] fry following oligotrophication of a reservoir. Ecology of Freshwater Fish 32 : 724-734.
DOI: 10.1111/eff.12718
Říha M., Prchalová M., Brabec M., Draštík V., Muška M., Tušer M., Bartoň D., Blabolil P., Čech M., Frouzová J., Holubová M., Jůza T., Ribeiro de Moraes K., Rabaneda Bueno R., Sajdlová Z., Souza A., Šmejkal M., Vašek M., Vejřík L., Vejříková I., Peterka J., Kubečka J. (2023) Calibration of fish biomass estimates from gillnets: Step towards broader application of gillnet data. Ecological Indicators 153 : 110425.
DOI: 10.1016/j.ecolind.2023.110425
Sajdlová Z., Jůza T., Draštík V., Seďa J., Čech M. (2023) The effect of littoral complexity on the diel distribution of early juvenile fish communities in temperate freshwater reservoirs. Ecology of Freshwater Fish 32 : 783–794.
DOI: 10.1111/eff.12740
Vašek M., Brabec M., Blabolil P., Čech M., Draštík V., Jůza T., Kubečka J., Muška M., Peterka J., Prchalová M., Říha M., Hejzlar J. (2023) Fish scale stable isotopes as potential indicators of nutrient pollution: Exploring the response of roach (Rutilus rutilus) scale δ15N and δ13C to a gradient of land use disturbance. Science of the Total Environment 865 : 161198.
DOI: 10.1016/j.scitotenv.2022.161198
Vejřík L., Vejříková I., Blabolil P., Sajdlová Z., Kočvara L., Kolařík T., Bartoň D., Jůza T., Šmejkal M., Peterka J., Čech M. (2023) Trophic position of the species and site trophic state affect diet niche and individual specialization: From apex predator to herbivore. Biology 12 : 1113.
DOI: 10.3390/biology12081113
Blabolil P., Griffiths N.P., Hänfling B., Jůza T., Draštík V., Knežević Jarić J., Dos Santos R.A., Mrkvička T., Peterka J. (2022) The true picture of environmental DNA, a case study in harvested fishponds. Ecological Indicators 142 : 109241.
DOI: 10.1016/j.ecolind.2022.109241
Golpour Dehsari A., Šmejkal M., Čech M., Dos Santos R.A., Souza A., Jůza T., Martinez C., Bartoň D., Vašek M., Draštík V., Kolařík T., Kočvara L., Říha M., Peterka J., Blabolil P. (2022) Similarities and differences in fish community composition accessed by electrofishing, gill netting, seining, trawling, and water eDNA metabarcoding in temperate reservoirs. Frontiers in Ecology and Evolution 10 : 913279.
DOI: 10.3389/fevo.2022.913279
Hejzlar J., Blabolil P., Čtvrtlíková M., Jůza T., Kasalický V., Kubečka J., Seďa J., Znachor P. (2022) Účinnost biomanipulace pro řízení vodního ekosystému a kvality vody ve vodárenských nádržích? [Biomanipulation efficiency for the control of aquatic ecosystem and water quality in water supply reservoirs?] Proc. Conf. Water Supply Biology 2022 147-156.
Jarić I., Říha M., Souza A., Rabaneda Bueno R., Děd V., Gjelland K.Ø., Baktoft H., Čech M., Blabolil P., Holubová M., Jůza T., Muška M., Sajdlová Z., Šmejkal M., Vejřík L., Vejříková I., Peterka J. (2022) Influence of internal seiche dynamics on vertical movement of fish. Freshwater Biology 67 : 1543-1558.
DOI: 10.1111/fwb.13959
Jůza T., Blabolil P., Čech M., Draštík V., Frouzová J., Sajdlová Z., Holubová M., Kočvara L., Kolařík T., Ribeiro de Moraes K., Muška M., Souza A., Vašek M., Říha M., Tušer M., Šmejkal M., Peterka J., Prchalová M., Kubečka J. (2022) Fish stock mass reduction is indicated in standard abundance and biomass estimates from gillnets and hydroacoustics. Fisheries Research 253 : 106389.
DOI: 10.1016/j.fishres.2022.106389
Jůza T., Blabolil P., Čech M., Draštík V., Holubová M., Hůda J., Kočvara L., Kolařík T., Muška M., Peterka J., Prchalová M., Říha M., Sajdlová Z., Tušer M., Vašek M., Vejřík L., Kubečka J. (2022) Odlovy nežádoucích druhů ryb z přehradních nádrží – Možnosti, efektivnost a ekonomické zhodnocení. [Ellimination of unwanted fish species from dam reservoirs - Possibilities, efficiency and economic evaluation.] Vodní nádrže 2022 148-153.
Jůza T., Kubečka J., Blabolil P., Holubová M., Kolařík T., Tušer M., Peterka J. (2022) Metodika regulačních odlovů nežádoucích druhů ryb v přehradních nádržích a jezerech. [Methodology of regulatory catches of undesirable fish lakes and reservoirs.] Book 51.
Kubečka J., Jůza T., Kočvara L. (2022) Tralová sestava. Užitný vzor. Úřad průmyslového vlastnictví ČR 36400.
Nazarizadeh M., Peterka J., Kubečka J., Vašek M., Jůza T., Ribeiro de Moraes K., Čech M., Holubová M., Souza A., Blabolil P., Muška M., Tsering L., Bartoň D., Říha M., Šmejkal M., Tušer M., Vejřík L., Frouzová J., Jarić I., Prchalová M., Vejříková I., Štefka J. (2022) Different hosts in different lakes: occurrence and prevalence of Ligula intestinalis plerocercoids in Czech water bodies. Folia Parasitologica 69 : 18.
DOI: 10.14411/fp.2022.018

More publications


Biology Centre CAS
Institute of Hydrobiology
Na Sádkách 702/7
370 05 České Budějovice

Staff search