doc. Ing. Josef Hejzlar, CSc.
Job Position: Senior scientist - Department of Hydrochemistry and Ecosystem Modelling (HEM)
Phone:
420387775876
E-mail:
hejzlar@hbu.cas.cz
Room:
323NB
Limnology of lakes and reservoirs, mainly cycles of nutrients (carbon, nitrogen, phosphorus, sulphur etc.), eutrophication, material transport from the catchment in surface waters and mathematical modelling of hydrodynamics and water quality in water bodies
Born: 1956 in Liberec, the Czech Republic
Education:
Master of Sciences, 1980, Institute of Chemical Technology in Prague. Emphasis on water technology and water analysis.
Doctor of Philosophy (PhD), 1985, Institute of Chemical Technology in Prague. Emphasis on water and environmental chemistry. Dissertation title: "Analysis of the high molecular weight dissolved organic substances produced by microorganisms of the activated sludge."
Habilitation, 2003, University of South Bohemia in České Budějovice. Thesis title: "Phosphorus cycling in the reservoir ecosystem"
Professional experience:
Institute of Landscape Ecology CAS, since April 1, 1990, Hydrobiological Institute CAS
1985-1992, research scientist, member of hydrochemical laboratory
Since 1993, senior scientist, member of hydrochemical laboratory
1998- 2015, head of the Department of Hydrochemistry and Ecosystem Modelling
Since 1995, Faculty of Science, University of South Bohemia in České Budějovice, a part-time contract as assistant or associated professor
Projects:
Principal investigator or co-investigator of 12 national projects (GACR, GAAVCR, MSMT-COST, MZe-NAZV) and participation in 2 EU projects focused on modeling the global and local impacts in aquatic and terrestrial ecosystems (EUROHARP, REFRESH)
Ecological management of reservoirs (KBE/471), Element cycles and processes in the catchment (KBE/469), Special limnology (KBE/465)
University of South Bohemia in České Budějovice, Faculty of Science
Description:
Tématika výuky zahrnuje limnologické a hydrochemické aspekty ekologie jezer a umělých nádrží, např. koloběhy živin (C, N, P, S), organické hmoty (primární produkce, humusové látky) a dalších prvků (Si, Fe, Mn, Al) v ekosystému "povodí - nádrž/jezero" a vododohospodářské řízení množství a kvality vody v nádržích.
Teaching topics include limnological and hydrochemical aspects of ecology of lakes and artificial reservoirs, e.g. cycles of nutrients (C, N, P, S), organic matter (primary production, humic substances) and other elements (Si, Fe, Mn, Al) in the ecosystem "catchment - reservoir/lake" and water management of the quantity and quality of water in reservoirs.
| Total found: 252 records
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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 |
|
Vystavna Y.,
Paule-Mercado M., Schmidt S., Hejzlar J.,
Porcal P., Matiatos I. (2023) Nutrient dynamics in temperate European catchments of different land use under changing climate. Journal of Hydrology: Regional Studies
45
: 101288. DOI: 10.1016/j.ejrh.2022.101288 |
|
Fott J., Nedbalová L., Brabec M., Kozáková R.,
Řeháková K., Hejzlar J., Šorf M.,
Vrba J. (2022) Light as a controlling factor of winter phytoplankton in a monomictic reservoir. Limnologica
95
: 125995. DOI: 10.1016/j.limno.2022.125995 |
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Golub M., Thiery W., Marcé R., Pierson D., Vanderkelen I. ......, Hejzlar J. (2022) A framework for ensemble modelling of climate change impacts on lakes worldwide: the ISIMIP Lake Sector. Geoscientific Model Development
15
: 4597–4623. DOI: 10.5194/gmd-15-4597-2022 |
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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. |
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Hejzlar J.,
Jarošík J.,
Mercado M.,
Porcal P. (2022) Optimalizace odtokového režimu ve VN Římov z hlediska vodárenského odběru. [Optimization of the outflow regime in the Římov reservoir from the point of view of water supply.] Vodní nádrže 2022
26-31. |
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Petrusek A., Hejzlar J. (2022) Když se ryby dusí aneb Příčiny a důsledky úbytku kyslíku ve vodách. [When fish suffocate or Causes and consequences of oxygen depletion in waters.] Živa
2
: 75-77. |
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Schmidt S., Hejzlar J.,
Kopáček J.,
Mercado M.,
Porcal P.,
Vystavna Y., Lanta V. (2022) Forest damage and subsequent recovery alter the water composition in mountain lake catchments. Science of the Total Environment
827
: 154293. DOI: 10.1016/j.scitotenv.2022.154293 0048-9697 |
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Wade A., Skeffington R.A., Couture R.M., Lampa M.E., Groot S., Halliday S.J., Harezlak V., Hejzlar J., Jackson-Blake L., Lepistö A., Papastergiadou E., Riera J.L., Rankinen K., Shahgedanova M., Trolle D., Whitehead P.G., Psaltopoulos D., Skuras D. (2022) Land use change to reduce freshwater nitrogen and phosphorus will be effective even with projected climate change. Water
14
: 829. DOI: 10.3390/w14050829 |
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Blabolil P., Harper L.R., Říčanová Š., Sellers G., Di Muri C.,
Jůza T.,
Vašek M.,
Sajdlová Z.,
Rychtecký P.,
Znachor P., Hejzlar J.,
Peterka J., Hänfling B. (2021) Environmental DNA metabarcoding uncovers environmental correlates of fish communities in spatially heterogeneous freshwater habitats. Ecological Indicators
126
: 107698. DOI: 10.1016/j.ecolind.2021.107698 |
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Čtvrtlíková M.,
Krolová M.,
Kučerová A., Hejzlar J., Hladík M.,
Kubečka J. (2021) Zlepšování ekologického potenciálu a kvality vody v nádržích pomocí plovoucích vegetačních ostrovů. [Improving the ecological potential and water quality in reservoirs using floating vegetation islands.] Sborník konference Vodárenská biologie
187–193. |
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Doubek J.P., Anneville O., Dur G., Lewandowska A.M., Patil V.P., Rusak J., Salmaso N., Seltmann C.T. , Straile D., Urrutia-Cordero P., Venail P., Adrian R., Alfonso M.B., DeGasperi C.L., De Eyto E., Feuchtmayr H., Gaiser E.E., Girdner S.F., Graham J.L., Grossart H., Hejzlar J., Jacquet S., Kirillin G., Llames M.E., Matsuzaki S.I.S., Nodine E.R., Piccolo M.C., Pierson D., Rimmer A., Rudstam L.G. , Sadro S., Swain H.M., Thackeray S., Thiery W., Verburg P., Zohary T. , Stockwell J. (2021) The extent and variability of storm-induced temperature changes in lakes measured with long-term and high-frequency data. Limnology and Oceanography
66
: 1979-1992. DOI: 10.1002/lno.11739 |
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Holubová M., Hejzlar J.,
Čech M.,
Vašek M.,
Blabolil P.,
Peterka J. (2021) Fluctuations in pelagic fish density linked to ambient conditions. Journal of Fish Biology
98
: 756-767. DOI: 10.1111/jfb.14622 |
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Hrycik A.R., Isles P.D.F., Adrian R., Albright M., Bacon L.C., Berger S.A., Bhattacharya R., Grossart H., Hejzlar J., Hetherington A.L., Knoll L.B., Laas A., McDonald C.P., Merrell K., Nejstgaard J.C., Nelson K., Nõges P., Paterson A.M., Pilla R.M., Robertson D.M., Rudstam L.G. , Rusak J., Sadro S., Silow E.A., Stockwell J., Yao H., Yokota K., Pierson D. (2021) Earlier winter/spring runoff and snowmelt during warmer winters lead to lower summer chlorophyll-a in north temperate lakes. Global Change Biology
27
: 4615-4629. DOI: 10.1111/gcb.15797 |
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Jane S.F., Hansen G.J.A., Kraemer B.M., Leavitt P., Mincer J.L., North R.L., Pilla R.M., Stetler J.T., Williamson C.E., Woolway R., Arvola L., Chandra S., DeGasperi C.L., Diemer L., Dunalska J., Erina O., Flaim G., Grossart H., Hambright K.D., Hein C., Hejzlar J., Janus L.L., Jenny J.P., Jones J.R., Knoll L.B., Leoni B., Mackay E., Matsuzaki S.I.S., McBride C., Müller-Navarra D.C., Paterson A.M., Pierson D., Rogora M., Rusak J., Sadro S., Saulnier-Talbot E., Schmid M., Sommaruga R., Thiery W., Verburg P., Weathers K.C., Weyhenmeyer G., Yokota K., Rose K.C. (2021) Widespread deoxygenation of temperate lakes. Nature
594
: 66-70. DOI: 10.1038/s41586-021-03550-y |
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Kopáček J., Hejzlar J.,
Porcal P.,
Znachor P. (2021) Biogeochemical causes of sixty-year trends and seasonal variations of river water properties in a large European basin. Biogeochemistry
154
: 81–98. DOI: 10.1007/s10533-021-00800-z |
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Schmidt S., Hejzlar J.,
Kopáček J.,
Paule-Mercado M.,
Porcal P.,
Vystavna Y. (2021) Relationships between a catchment-scale forest disturbance index, time delays, and chemical properties of surface water. Ecological Indicators
125
: 107558. DOI: 10.1016/j.ecolind.2021.107558 |
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Shabarova T.,
Salcher M.,
Porcal P.,
Znachor P.,
Nedoma J., Grossart H.,
Seďa J., Hejzlar J.,
Šimek K. (2021) Recovery of freshwater microbial communities after extreme rain events is mediated by cyclic succession. Nature Microbiology
6
: 479–488. DOI: 10.1038/s41564-020-00852-1 |
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Vašek M.,
Souza A.,
Říha M.,
Kubečka J.,
Znachor P., Hejzlar J. (2021) Stable isotope evidence from archived fish scales indicates carbon cycle changes over the four-decade history of the Římov Reservoir (Czechia). Science of the Total Environment
755
: 142550. DOI: doi.org/10.1016/j.scitotenv.2020.142550 |
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Vystavna Y.,
Mercado M.,
Juras R., Schmidt S.,
Kopáček J., Hejzlar J., Huneau F. (2021) Effect of snowmelt on the dynamics, isotopic and chemical composition of runoff in mature and regenerated forested catchments. Journal of Hydrology
598
: 126437. DOI: 10.1016/j.jhydrol.2021.126437 |
