Łukasz Wejnerowski

Dr Łukasz Wejnerowski

Position: assistant professor
Email: wejner@amu.edu.pl
Room: 1.28
Phone: +48 61 829 5748
Office hours: Wednesday 10:00 - 12:00
AMU Research Portal

Research Interests

  • Algal Culturing Techniques
  • Aquatic Invasions
  • Climate Change
  • Cyanotoxins
  • Daphnia – Cyanobacteria Interactions
  • Ecology of Bloom-forming Cyanobacteria
  • Hydrobiology
  • Zooplankton

Current study topics

  • Cyanobacteria vs. climate pressures

  • Biosecurity in the fieldwork of hydrobiologist

  • Interactions between cyanobacteria and cladocerans

Research projects

Chosen publications


  • Wejnerowski Ł., Poniecka E., Buda J., Klimaszyk P., Piasecka A., Dziuba M.K., Mugnai G., Takeuchi N., Zawierucha K. 2023. Empirical testing of cryoconite granulation: Role of cyanobacteria in the formation of key biogenic structure darkening glaciers in polar regions. Journal of Phycology 59: 939-949.

  • 2022

  • Wejnerowski Ł., Aykut T.O., Pełechata A., Rybak M., Dulić T., Meriluoto J., Dziuba M.K. 2022. Plankton hitch-hikers on naturalists’ instruments as silent intruders of aquatic ecosystems: current risks and possible prevention. NeoBiota 73: 193-219.

  • Cerbin S., Pérez, G., Rybak, M., Wejnerowski, Ł., Konowalczyk, A., Helmsing, N., Naus-Wiezer, S., Meima-Franke, M., Pytlak, Ł., Raaijmakers, C., Nowak, N., Bodelier, P.L.E. 2022. Methane-derived carbon as a driver for cyanobacterial growth. Frontiers in Microbiology 13: 837198.

  • Rozwalak P., Podkowa P., Buda J., Niedzielski P., Kawecki S., Ambrosini R., Azzoni R.S., Baccolo G., Ceballos J.L., Cook J., Di Mauro B., Ficetola G.F., Franzetti A., Ignatiuk D., Klimaszyk P., Łokas E., Ono M., Parnikoza I., Pietryka M., Pittino F., Poniecka E., Porazinska D.L., Richter D., Schmidt S.K., Sommers P., Souza-Kasprzyk J., Stibal M., Szczuciński W., Uetake J., Wejnerowski Ł., Yde J.C., Takeuchi N., Zawierucha K. 2022. Cryoconite – From minerals and organic matter to bioengineered sediments on glacier’s surfaces. Science of the Total Environment 807: 150874.

  • 2021

  • Falfushynska H., Horyn O., Osypenko I., Rzymski P., Wejnerowski Ł., Dziuba M.K., Sokolova I.M. 2021. Multibiomarker-based assessment of toxicity of central European strains of filamentous cyanobacteria Aphanizomenon gracile and Raphidiopsis raciborskii to zebrafish Danio rerio. Water Research 194: 116923.

  • Dziuba M.K., Kuczynski L., Wejnerowski Ł., Cerbin S., Wolinska J. 2021. Countergradient variation concealed adaptive responses to temperature increase in Daphnia from heated lakes. Limnology and Oceanography 66: 1268-1280.

  • 2020

  • Dziuba M.K., Herdegen-Radwan M., Pluta E., Wejnerowski Ł., Szczuciński W., Cerbin S. 2020. Temperature increase altered Daphnia community structure in artificially heated lakes: a potential scenario for a warmer future. Scientific Reports 10: 13956.

  • Wejnerowski Ł., Falfushynska H., Horyn P., Osypenko I., Kokociński M., Meriluoto J., Jurczak T., Poniedziałek B., Pniewski F., Rzymski P. 2020. In Vitro Toxicological Screening of Stable and Senescing Cultures of Aphanizomenon, Planktothrix, and Raphidiopsis. Toxins 12: 400.

  • Wejnerowski Ł., Sikora-Koperska A., Dawidowicz P. 2020. Temperature elevation reduces the sensitivity of invasive cladoceran Daphnia lumholtzi to filamentous cyanobacterium Raphidiopsis raciborskii. Freshwater Biology 65: 935-946.

  • 2018

  • Wejnerowski Ł., Rzymski P., Kokociński M., Meriluoto J. 2018. The structure and toxicity of winter cyanobacterial bloom in a eutrophic lake of the temperate zone. Ecotoxicology 27: 752-760 .

  • Wejnerowski Ł., Cerbin S., Wojciechowicz M., Jurczak T., Glama M., Meriluoto J., Dziuba M. 2018. Effects of Daphnia exudates and sodium octyl sulphates on filament morphology and cell wall thickness of Aphanizomenon gracile (Nostocales), Cylindrospermopsis raciborskii (Nostocales) and Planktothrix agardhii (Oscillatoriales). European Journal of Phycology 53:280-289.

  • 2017

  • Wejnerowski Ł., Cerbin S., Dziuba M. 2017. Setae thickening in Daphnia magna alleviates the food stress caused by the filamentous cyanobacteria. Aquatic Ecology 51: 485-498.

  • Wejnerowski Ł., Wojciechowicz M.K., Glama M., Olechnowicz J., Dziuba M., Cerbin S. 2017. Solitary terminal cells of Aphanizomenon gracile (Cyanobacteria, Nostocales) can divide and renew trichomes. Phycological Research 65: 248-255.

  • Ntalli N., Michaelakis A., Eloh K., Papachristos D.P., Wejnerowski Ł., Caboni P., Cerbin S. 2017. Biocidal effect of (E)-anethole on the cyanobacterium Aphanizomenon gracile Lemmermann. Journal of Applied Phycology 29: 1297-1305.

  • Dziuba M.K., Cerbin S., Wejnerowski Ł. 2017. Is bigger better? A possibility for adaptation of Daphnia to filamentous cyanobacteria in the face of global warming. Hydrobiologia 798: 105-118.

  • 2016

  • Wejnerowski Ł., Cerbin S., Wojciechowicz M.K., Dziuba M.K. 2016. Differences in cell wall of thin and thick filaments of cyanobacterium Aphanizomenon gracile SAG 31.79 and their implications for different resistance to Daphnia grazing. Journal of Limnology 75: 634-643.

  • 2015

  • Wejnerowski Ł., Cerbin S., Dziuba M.K. 2015. Thicker filaments of Aphanizomenon gracile are more harmful to Daphnia than thinner Cylindrospermopsis raciborskii. Zoological Studies 54: 2.

  • 2013

  • Cerbin S., Wejnerowski Ł., Dziuba M.K. 2013. Aphanizomenon gracile increases in width in the presence of Daphnia. A defence mechanism against grazing? Journal of Limnology 72: 505-511.

  • Dziuba M.K., Cerbin S., Wejnerowski Ł. 2013. Cladocera and Copepoda of the Shallow Eutrophic Lake in Natura 2000 Area in Western Poland. Pakistan Journal of Zoology 45: 653-659.


  • 2018 – to date

    Assistant Professor at the Department of Hydrobiology, Faculty of Biology at AMU

  • 2018

    PhD in ecology (Faculty of Biology at AMU)

  • 2012

    MSc in biology (Faculty of Biology at AMU)

  • 2010

    BSc in biology (Faculty of Biology at AMU)

Scientific internships

  • 03/2021 – 11/2021

    Department of Biosciences, Åbo Akademi University, Turku, Finland. “Toxicological screening of cyanobacterial cultures using HPLC methods and biotests with Daphnia”.

  • 02/2017 – 04/2017

    Department of Biosciences, Åbo Akademi University, Turku, Finland. “Advanced chromatographic (HPLC-DAD, HPLC-FL, LC-MS-MS) analyses for cyanobacterial toxins”.

  • 01/2015 – 03/2015

    Department of Hydrobiology, University of Warsaw, Poland. “The study of the effect of temperature and filamentous cyanobacteria on life history of small- and large-bodied Daphnia species”.

  • 01/2014 – 03/2014

    Department of Algology in Třeboň, Institute of Botany of the ASCR, Research Division Třeboň, Czech Republic. “Isolation of cyanobacteria from natural ecosystems and their cultivation in labororatory”.

Supervision of Bachelor Theses

  • Anna Czerepska (2022) Comparison of the effectiveness of Daphnia magna and Daphnia pulicaria biotests in the assessment of cyanobacterial bloom toxicity.

Supervision of Erasmus Student Projects

  • Radka Sedláčková (2023) Comparison of the gliding activity between chosen benthic filamentous cyanobacteria isolated from hot springs and polar environments.

  • Aysu Kendir (2019) Thermal tolerance of filamentous cyanobacteria from geothermal habitats.

  • Maria Barondi (2019) Isolation, purification, and cultivation of cyanobacteria from glaciers of Greenland and Svalbard.

  • Tümer Orhun Aykut (2019/2020) Isolation, purification, and cultivation of filamentous cyanobacteria of the genus Aphanizomenon (Nostocales).

  • Özleyiş Yağmur Binay (2018) The effect of Daphnia chemical stimuli on the growth of filamentous cyanobacterium Aphanizomenon gracile.

  • Ilay Turgut (2018) The growth of cyanobacterium Aphanizomenon gracile at different concentrations of ammonium.