Barbara Pietrzak, PhD


Department of Hydrobiology
Faculty of Biology, University of Warsaw
at Biological and Chemical Research Centre
Żwirki i Wigury 101
02-089 Warszawa
Tel.: +48 22 55 26568
Fax.: +48 22 55 26575

Research interests

My research interests are in the field of evolutionary ecology – how genes and environment interact in shaping life history and behaviour, in particular. I have focused on evolution and phenotypic plasticity of longevity, and studied also dispersal mechanisms in aquatic animals. I am now venturing into the study of how consistent between individual differences in behaviour, so called animal personalities, emerge. I am also interested in links between molecular, individual, population and community level responses to environmental change.


Animal ethology
Behavioral ecology
Civilization threats in the contemporary world. Homo sapiens and the planet
Competition and predation
Ecology (for bioinformatics)
Ecology of aquatic and terrestrial ecosystems (in English)
Field ecology
General ecology



"Mechanisms of animal behavioural individuality emergence" (2017-2020), PI

"The effect of temperature on species composition and size structure of the lake zooplankton communities" (2011-2014), investigator

"Cyanobacteria – herbivorous zooplankton interaction under forecasted global warming conditions" (2009-2012), investigator

"Ecology of ageing – Daphnia model” (2010-2011), PI

"Ecological and molecular aspects of ageing - Daphnia model" (2007-2009), PI


Selected publications

Pietrzak B., Pijanowska J., Dawidowicz P. 2017. The effect of temperature and kairomone on Daphnia escape ability: a simple bioassay. Hydrobiologia 798: 15–23

Ślusarczyk M., Grabowski T., Pietrzak B. 2017. Quantification of floating ephippia in lakes: A step to better understanding high dispersal propensity of freshwater plankters. Hydrobiologia 798: 61-72

Pietrzak B., Dawidowicz P., Prędki P., Dańko M.J. 2015. How perceived predation risk shapes patterns of aging in water fleas. Experimental Gerontology 69: 1–8

Bednarska A., Pietrzak B., Pijanowska J. 2014. Effect of poor manageability and low nutritional value of cyanobacteria on Daphnia magna life history performance. Journal of Plankton Research, 36: 838-847

Pietrzak B., Bednarska A., Markowska M., Rojek M., Szymanska E., Slusarczyk M. 2013. Behavioural and physiological mechanisms behind extreme longevity in Daphnia. Hydrobiologia 715: 125-134

Dawidowicz P., Predki P., Pietrzak B. 2013. Depth-selection behavior and longevity in Daphnia: an evolutionary test for the predation-avoidance hypothesis. Hydrobiologia 715: 87–91

Pietrzak B. 2011. Interclonal differences in age-specific performance in Daphnia magna. Journal of Limnology 70(2): 345-352 PDF

Pietrzak B., Bednarska A., Grzesiuk M. 2010. Longevity of Daphnia magna males and females - Hydrobiologia 364: 71-75

Pietrzak B., Grzesiuk M., Bednarska A. 2010. Food quantity shapes life history and survival strategies in Daphnia magna (Cladocera) - Hydrobiologia 364: 51-54

Dawidowicz P., Prędki P., Pietrzak B., 2010. Shortened lifespan: another cost of fish-predator avoidance in cladocerans? Hydrobiologia 643: 27–32

Ślusarczyk M., Pietrzak B., 2008. To sink or float: The fate of dormant offspring is determined by maternal behaviour in Daphnia. Freshwater Biology 53 (3): 569-576 PDF

Pietrzak B., Ślusarczyk M., 2006. The fate of the ephippia: Daphnia dispersal in time and space. Polish Journal of Ecology 54 (4): 709-714 PDF

Realizacja NETMAX