dr Aleksandra Pełechata

dr Aleksandra Pełechata

Position: assistant professor
Email: ola.p@amu.edu.pl
Room: 2.89
Phone: +48 61 829 57 63
Office hours: Tuesday 10.00-12.00

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Research Interests

    My research topics are focused on hydrobiology and environmental protection. I am interested in phytoplankton ecology of lakes of different types of trophy, especially Chara-lakes. My research focuses on the phytoplankton-macrophytes relationships, phytoplankton spatial diversity and the impact of climate change on the functioning of aquatic ecosystems.

Current study topics

  • The impact of charophytes on the spatial and morphological diversity of phytoplankton in lakes

  • The influence oftannins on selected phytoplankton species in ex situ conditions

  • Allelopathy - in situ relationships of phytoplankton with Nitellopsis obtusa and Myriophyllum verticillatum

  • Climate changesand the functioning of lakes on the example of the phytoplankton - macrophytes relations

Research projects

  • 2017 - 2020

    Grant NCN, OPUS 12 no. 2016/23/B/NZ8/00635 The role of aquatic vegetation in the carbon accumulation and deposition in bottom sediment: a comparative analysis of charophyte and vascular vegetation (co-investigator)

  • 2016 - 2019

    Grant NCN, HARMONIA no. UMO-2015-18/M/NZ8/00119 The effects of warming and eutrophication on emissions of methane and its importance in lake food webs (co-investigator)

  • 2015

    International project: European Multi-Lake Survey, summer 2015 (EMLS) financed within Cyanocost and Netlake (ES1105 and ES1201) programs, (co-investigator)

  • 2014 - 2016

    Comprehensive program of protection of Lobelia lakes in Poland. First stage. Basics and model solutions (co-investigator)

  • 2010 - 2013

    Grant MNiSW - Ministry of Science and Higher Education (Nr N N304 042539) The role of macrophyte communities in spatial and temporal differentiation of abiotic conditions and structure of phytoplankton of the lake ecosystem (co-investigator)

  • 2004 - 2007

    Grant KBN – Committee for Scientific Research (2 P04G 113 27) Charophyte vegetation on the background of the trophic status of lakes of Lubuskie Lakeland (central-western Poland) (co-investigator)

Chosen publications


  • Pietruczuk K., Budka A., Andrzejewski W., Bielak-Bielecki P., Buczyński P., Buczyńska E., Budzyńska A., Czarnecki M., Dajewski K., Głazaczow A., Golski J., Grabowski M., Jusik S., Kokociński M., Pełechata A., Pietruczuk K., Przesmycki M., Runowski S., Sajkiewicz R., Tończyk G., Szoszkiewicz K. 2023. Observed and estimated taxonomic diversity of different groups of aquatic organisms in the pristine rivers in the Biebrza National Park. Ecohydrology and Hydrobiology (in press).

  • Pełechata A., Kufel, L., Pukacz, A., Strzałek, M., Biardzka, E., Brzozowski, M., Kaczmarek, L., Pełechaty, M. 2023. Climate features or the composition of submerged vegetation? Which factor has a greater impact on the phytoplankton structure in temperate lakes? Ecological Indicators 146: 109840.

  • 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.

  • 2021

  • Donis D., Mantzouki E., […], Ibelings B.W. 2021. Stratification strength and light climate explain variation in chlorophyll a at the continental scale in a European multilake survey in a heatwave summer. Limnology and Oceanography 66: 4314-4333 .

  • Apolinarska K., Pleskot K., Pełechata A., Migdałek M., Pełechaty M. 2021. Seasonal deposition of authigenic calcite out of isotopic equilibrium with DIC and water, and implications for paleolimnological studies. Journal of Paleolimnology 66: 41-53.

  • Brzozowski M., Pełechata A., Kaczmarek L., Pełechaty M. 2021. Transformation and simplification of aquatic vegetation structure along with re-oligotrophication of the lake during the last 40 years. Acta Societatis Botanicorum Poloniae 90: 905.

  • 2020

  • Pełechata A., Pukacz A., Kaczmarek L., Pełechaty M. 2020. Do charophytes influence biomass and species composition of phytoflagellates? Aquatic Botany 165: 103240.

  • Apolinarska K., Pleskot K., Pełechata A., Migdałek M., Siepak M., Pełechaty M. 2020. The recent deposition of laminated sediments in highly eutrophic Lake Kierskie, western Poland: 1 year pilot study of limnological monitoring and sediment traps. Journal of Paleolimnology 63: 283-304.

  • 2019

  • Budzyńska A., Rosińska J., Pełechata A., Toporowska M., Napiórkowska-Krzebietke A., Kozak A., Messyasz B., Pęczuła W., Kokociński M., Szeląg-Wasielewska E., Grabowska M., Mądrecka B., Niedźwiecki M., Alcaraz Parraga P., Pełechaty M., Karpowicz M., Pawlik-Skowrońska B. 2019. Environmental factors driving the occurence of the invasive cyanobacterium Sphaerospermopsis aphanizomenoides (Nostocales) in temperate lakes Science of the Total Environment 650: 1338-1347.

  • 2018

  • Mantzouki E., Campbell J., van Loon E., […], Pełechata A. et al. 2018. A European Multi Lake Survey dataset of environmental variables, phytoplankton pigments and cyanotoxins. Scientific Data 5: 180226.

  • Mantzouki E., M., Lürling M., Fastner J., […], Pełechata A. et al. 2018. Temperature Effects Explain Continental Scale Distribution of Cyanobacterial Toxins. Toxins 10: 156.

  • 2016

  • Pełechata A., Pełechaty M., Pukacz A. 2016. Factors influencing cyanobacteria community structure in Chara-lakes. Ecological Indicators 71: 477–490.

  • 2015

  • Pełechata A., Pełechaty M., Pukacz A. 2015. Winter temperature and shifts in phytoplankton assemblages in a small Chara-lake. Aquatic Botany 124: 10-18.

  • 2013

  • Pełechaty M., Pukacz A., Apolinarska K., Pełechata A., Siepak M. 2013. The significance of Chara vegetation in the precipitation of lacustrine calcium carbonate. Sedimentology 60: 1017–1035.

  • Pukacz A., Pełechaty M., Pełechata A. 2013. The relation between charophytes and habitat differentation in temperate lowland lakes. Polish Journal of Ecology 61: 105-11

  • Kobos, Błaszczyk A., Hohlfeld N., Toruńska A., Krakowiak A., Hebel A., Sutryk K., Grabowska M., Toporowska M., Kokociński M., Messyasz B., Rybak A., Napiórkowska-Krzebietke A., Nawrocka L., Pełechata A., Budzyńska A., Zagajewski P., Mazur-Marzec H. 2013. Cyanobacteria and cyanotoxins in Polish freshwater bodies. Oceanological and Hydrobiological Studies 42: 358–378.

  • 2010

  • Pełechata A., Pełechaty M. 2010. The in situ influence of Ceratophyllum demersum on a phytoplankton assemblage. Oceanological and Hydrobiological Studies 39: 95-101.

  • 2007

  • Pełechaty M., Pełechata A., Pukacz A. 2007. Flora i roślinność ramieniowa na tle stanu trofii jezior Pojezierza Lubuskiego (środkowo-zachodnia Polska). UAM. Bogucki Wydawnictwo Naukowe, Poznań, 137 pp.

  • 2006

  • Pełechata A., Pełechaty M., Pukacz A. 2006. Cyanoprokaryota of shallow lakes of Lubuskie Lakeland (mid-western Poland). Oceanological and Hydrobiological 35: 3-14.

  • Pełechaty M., Pełechata A., Pukacz A., Burchardt L., 2006. Interrelationships between macrophytes (including charophytes) and phytoplankton and the ecological state of lakes. Ecohydrology & Hydrobiology 6: 79-88.

  • Pełechata A., Pełechaty M., Pukacz A., 2006. An attempt to the trophic status assessment of the lakes of Lubuskie Lakeland. Limnological Review 6: 239-246.

Career History

  • 2015 – to date

    Professor Assistant at the Department of Hydrobiology, Adam Mickiewicz University

  • 2007 – 2015

    Senior lecturer in the Collegium Polonicum, AMU

  • 2004 – 2006

    Professor assistant in the Collegium Polonicum, AMU

  • 2000 – 2004

    assistant in the Collegium Polonicum, AMU, PhD student in the Dept. of Hydrobiology, AMU (PhD thesis: Spatial and temporal distribution of phytoplankton on the background of the habitat diversity and antropopressure, supervisor: Professor Lubomira Burchardt)

  • 1995 – 2000

    Biology and chemistry teacher in primary school and junior high school in Poznań

  • 1990 – 1995

    Student at the Faculty of Biology, AMU, subject: biology, specialty: environmental biology (Master thesis: Relationships between nutrients released from sediments and the phytoplankton structure and biomass of Jarosławieckie Lake (1992), supervisor: Professor Lubomira Butchardt)

Lectures (and classes/seminars)

  • Biology of aquatic organisms and environments
  • Hydrobotany
  • Environmental monitoring
  • Systematics and phylogeny of plants and fungi
  • Protection of natural heritage
  • Natural resources and their protection
  • Ecosystem under environmental stress
  • Academic days

Teaching – Bachelor and Master theses

For students of biology and environmental protection (topics: assessment of ecological status of lakes based on phytoplankton; in situ allelopathic interactions between macrophytes and chosen phytoplankton species)

Administrative Posts

since 2017 Coordinator of Scientists Night, Faculty of Biology, AMU