doc. RNDr. Petr Znachor, Ph.D.

Position 1 Job Position: Head of department
Department: Department of Aquatic Microbial Ecology (AME)
Workplace: Institute of Hydrobiology

Position 2 Job Position: Research Scientist
Department: Department of Aquatic Microbial Ecology (AME)
Workplace: Institute of Hydrobiology

Contact details Phone: 420387775850
Web: www.fytoplankton.cz/znachy
E-mail: znachy@gmail.com
Room: C321

Others CV:

Scientometry

H-index = 19

50 IF publications

1037 citations (948 without self-citations)

Researcher ID: AAH-5088-2020

Education

• 1995 – M.Sc. (Limnology) – Faculty of Biological Sciences, University of South Bohemia, České Budějovice

• 2003 – Ph.D. (Hydrobiology) – Faculty of Biological Sciences, University of South Bohemia, České Budějovice

• 2015 – habilitation (Hydrobiology) – Faculty of Biological Sciences, University of South Bohemia, České Budějovice

Employment

• Since 1998 – research associate at the Institute of Hydrobiology, Biology Centre AS ČR, v.v.i.

• Since 2007 – lecturer at the Faculty of Science, University of South Bohemia, České Budějovice

Main research areas

• phytoplankton dynamics, function and diversity

• reservoirs limnology, phytoplankton blooms, diatom ecophysiology

• reservoir spatio-temporal heterogeneity

• analyses of long-term limnological datasets

• effects of disturbances on phytoplankton structure and composition

• interactions between phytoplankton and bacteria

• in situ application of modern fluorescence assays and image analysis

• photography – from microorganisms to aerial views of whole ecosystems

• knowledge dissemination and public communication

Membership in scientific organizations

Czech Limnological Society, Czech National Committee of LTER

Other activities

Science popularization, in particular via photography exhibitions and public presentations. Microphotographs of freshwater algae and cyanobacteria have been repeatedly published in numerous textbooks and journals. They also received various Czech and international awards (e.g. Olympus Bioscapes, Nikon Microworld).

Total found: 84 records
Henriques Vieira H., Bulzu P., Kasalický V., Haber M., Znachor P., Piwosz K., Ghai R. (2024) Isolation of a widespread giant virus implicated in cryptophyte bloom collapse. The ISME Journal 18: wrae029. DOI: 10.1093/ismejo/wrae029
Mukherjee I., Grujčić V., Salcher M., Znachor P., Seďa J., Devetter M., Rychtecký P., Šimek K., Shabarova T. (2024) Integrating depth-dependent protist dynamics and microbial interactions in spring succession of a freshwater reservoir. Environmental Microbiome 19: 31. DOI: 10.1186/s40793-024-00574-5
Šimek K., Peterka J., Znachor P. (2024) Nevhodná rybářské projekty na horských nádržích Novohradska v povodí vodárenské nádrže Římov. [Inappropriate fishery projects conducted in oligotrophic ponds in Novohradské mountains within the watershed of the Římov drinking water reservoir.] Vodní hospodářství 7-8: 23-27.
Čtvrtlíková M., Kopáček J., Nedoma J., Znachor P., Hekera P., Vrba J. (2023) Aquatic quillworts, Isoëtes echinospora and I. lacustris under acidic stress—A review from a temperate refuge. Ecology and Evolution 13: e9878. DOI: 10.1002/ece3.9878
Kavagutti V., Bulzu P., Chiriac M., Salcher M., Mukherjee I., Shabarova T., Grujčić V., Mehrshad M., Kasalický V., Andrei A.S., Jezberová J., Seďa J., Rychtecký P., Znachor P., Šimek K., Ghai R. (2023) High‑resolution metagenomic reconstruction of the freshwater spring bloom. Microbiome 11: 15. DOI: 10.1186/s40168-022-01451-4
Park H., Shabarova T., Salcher M., Kosová L., Rychtecký P., Mukherjee I., Šimek K., Porcal P., Seďa J., Znachor P., Kasalický V. (2023) In the right place, at the right time: the integration of bacteria into the Plankton Ecology Group model. Microbiome 11: 112. DOI: 10.1186/s40168-023-01522-0
Znachor P., Nedoma J., Kolář V., Matoušů A. (2023) Spatial and temporal variability of methane emissions and environmental conditions in a hyper-eutrophic fishpond. Biogeosciences 20: 4273–4288. DOI: 10.5194/bg-20-4273-2023
Čtvrtlíková M., Znachor P. (2022) Společenstva vodních rostlin, řas a sinic v přehradních nádržích a důlních jezerech. [Communities of aquatic plants, algae and cyanobacteria in reservoirs and mining lakes.] Živa 5: 249.
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.
Rychtecký P., Znachor P. (2022) Prostorová heterogenita nádrží a její důsledky pro kvalitu vody. [The spatial heterogeneity of reservoirs and its implications for water quality.] Živa 5: 231-234.
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
Konopáčová E., Nedoma J., Čapková K., Čapek P., Znachor P., Pouzar M., Říha M., Řeháková K. (2021) Low specific phosphorus uptake affinity of epilithon in three oligo- to mesotrophic post-mining lakes. Frontiers in Microbiology 12: 735498. DOI: 10.3389/fmicb.2021.735498
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
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
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
Cantonati M., Poikane S., Pringle C.M., Stevens L.E., Turak E., Heino J., Richardson J.S., Bolpagni R., Borrini A., Cid N., Čtvrtlíková M., Galassi D.M.P. , Hájek M., Hawes I., Levkov Z., Naselli-Flores L., Saber A.A., Di Cicco M., Fiasca B. , Hamilton P., Kubečka J., Segadelli S., Znachor P. (2020) Characteristics, Main Impacts, and Stewardship of Natural and Artificial Freshwater Environments: Consequences for Biodiversity Conservation Water 12: 260. DOI: 10.3390/w12010260
Čtvrtlíková M., Kopáček J., Nedoma J., Znachor P., Vrba J. (2020) Only the adults survive – A long-term resistance of Isoëtes lacustris to acidity and aluminium toxicity stress in a Bohemian Forest lake Ecological Indicators 111: 106026. DOI: 10.1016/j.ecolind.2019.106026
Čtvrtlíková M., Kučerová A., Krolová M., Znachor P., Hejzlar J., Matěna J., Muška M., Kubečka J., Hladík M. (2020) Vodní makrofyta umělých plovoucích ostrovu v nádržích České republiky. [Aquatic macrophytes of artificial floating islands in the reservoirs of the Czech Republic.] book 108pp.
Piwosz K., Vrdoljak A., Frenken T., González-Olalla J.M., Śantić D., McKay R.M., Spilling K., Guttman L., Znachor P., Mujakic I., Kolesár Fecskeová L., Zoccarato L., Hanusová M., Pessina A., Reich T., Grossart H., Koblížek M. (2020) Light and primary production shape bacterial activity and community composition of aerobic anoxygenic phototrophic bacteria in a microcosm experiment. mSphere 5: e00354-20. DOI: doi.org/10.1128/mSphere.00354-20
Znachor P., Čtvrtlíková M., Vrba J. (2020) Lahvenka velká, nečekaný obyvatel Prášilského jezera. [Ophrydium versatile, an unexpected inhabitant of Prášilské Lake.] Vesmír 99: 176-179.

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