Dr Joanna Lenarczyk

Assistant Professor

Biodiversity and Evolution Group
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Lubicz 46, 31‑512 Kraków, Poland


Research interests

  • Taxonomy and ecology of microscopic algae, especially Pediastrum sensu lato.
  • Biogeography of green algae (Chlorococcales, Desmidiales) in mountain ecosystems.
  • Pediastrum sensu lato in fossil materials.
  • Genome (nuclear, mitochondrial) studies using new generation sequencing.
  • Geometric morphometrics and statistic analysis in botanical studies.

Higher education and employment history

  • MSc degree at the Nicolaus Copernicus University (2005).
  • PhD degree at the W. Szafer Institute of Botany, PAS (2011).
  • Intern at the Voivodship Inspectorate for Environmental Protection in Bydgoszcz, Delegacy in Toruń (2005–2006).
  • Assistant professor at the W. Szafer Institute of Botany, PAS (since 2011).

International experience

  • Ukraine (2013) – 1-week research trip (collection of phycological materials) to the Chornohora Mountains.
  • Czech Republic (2014) – 2-week research internship on geometric morphometrics; Charles University, Prague.
  • Spain (2015) – 1-week workshop "Geometric morphometrics and phylogeny" (Transmitting Science workshop) in Els Hostalets de Pierola.

Research projects

  • Taxonomic and environmental studies on the genus Pediastrum Meyen (Chlorophyta) in Poland (2008–2010); grant no. N N303 070 534; Ministry of Science and Higher Education – contractor.
  • Taxonomy and distribution of green algae (Chlorophyta) in selected water bodies of the Dolina Gąsienicowa valley in the Tatra Mountains (2011); grant "Young Scientists"; W. Szafer Institute of Botany, PAS – project leader.
  • Preliminary studies on molecular variability of the genus Pediastrum Meyen (Chlorophyta) in Poland (2012); grant "Young Scientists"; W. Szafer Institute of Botany, PAS – project leader.
  • Coastal waters as the perfect ecological niche for microscopic green algae of the genus Pediastrum Meyen (Chlorophyta) in Poland – preliminary genetic-morphometric studies (2013); grant "Young Scientists"; W. Szafer Institute of Botany, PAS – project leader.
  • Pediastrum alternans – morphological variability and phylogenetic position (2014); grant "Young Scientists"; W. Szafer Institute of Botany, PAS – project leader.
  • The evolutionary history of shape diversification in Pediastrum Meyen on the example of P. boryanum (Turpin) Meneghini (2015); grant "Young Scientists"; W. Szafer Institute of Botany, PAS – project leader.
  • The architecture of the mitochondrial genome and the morphology in microscopic algae of the species Pseudopediastrum boryanum (Chlorophyceae, Sphaeropleales, Hydrodictyaceae) (2017); grant "Young Scientists"; W. Szafer Institute of Botany, PAS – project leader.
  • Trees as the centers of biological diversity of spore organisms in forests – a comparative study on the example of the Wigry National Park: part II (2018) and part III (2019); grant no. EZ.0290.1.36.2018 and grant no. EZ.0290.1.20.2019; State Forests – National Forest Holding – contractor.
  • Life and death of the extinct rhinoceros (Stephanorhinus sp.) from western Poland in the light of interdisciplinary palaeoenvironmental studies (2018–2021); grant no. 0201/2048/18 [2017/25/B/ST10/00111]; National Science Centre (NCN) – contractor.

Recent publications (selected)

Hrynowiecka A., Stachowicz-Rybka R., Moskal-del Hoyo M., Niska M., Kotrys B., Karpińska-Kołaczek M., Lenarczyk J., Piątek J., Kołaczek P., Borówka R.K., Bąk M., Tarnawski D., Kadej M., Sobczyk A., Łabęcka K., Stachowicz K., Stefaniak K. 2024. Multi-proxy environmental reconstruction of the Eemian and Early Vistulian – Before, during and after the life of the forest rhino Stephanorhinus kirchbergensis (Jäger, 1839) from Gorzów Wielkopolski (NW Poland). Quaternary International 686–687: 49–82. DOI

Wołowski K., Lenarczyk J., Augustynowicz J., Sitek E. 2023. Exploring a unique water ecosystem under long-term exposure to hexavalent chromium – An in situ study of natural diatom (Bacillariophyceae) communities. Chemosphere 340: 139941. DOI

Lenarczyk J., Saługa M., Piątek J. 2020. Integrative approach helps clarify confusing taxonomy of the Pseudopediastrum boryanum species complex (Chlorophyceae), including recognition of five distinct species. Journal of Phycology 56: 1557–1574. DOI

Piątek J., Lenarczyk J., Piątek M. 2020. Assessing morphological congruence in Dinobryon species and their stomatocysts, including a newly established Dinobryon pediforme–stomatocyst connection. Scientific Reports 10: 9779. DOI

Stefaniak K., Stachowicz-Rybka R., Borówka R.K., Hrynowiecka A., Sobczyk A., Moskal-del Hoyo M., Kotowski A., Nowakowski D., Krajcarz M.T., Billia E.M.E., Persico D., Burkanova E.M., Leshchinskiy S.V., van Asperen E., Ratajczak U., Shpansky A.V., Lempart M., Wach B., Niska M., van der Made J., Stachowicz K., Lenarczyk J., Piątek J., Kovalchuk O. 2020. Browsers, grazers or mix-feeders? Study of the diet of extinct Pleistocene Eurasian forest rhinoceros Stephanorhinus kirchbergensis (Jäger, 1839) and woolly rhinoceros Coelodonta antiquitatis (Blumenbach, 1799). Quaternary International in press. DOI

Lenarczyk J. 2019. Evolution of morphological variability and modularity in single cells of algal colonies: a case study Pseudopediastrum (Hydrodictyaceae, Sphaeropleales, Chlorophyceae). Phycologia 58: 180–191. DOI

Sutkowy M., Lenarczyk J., Kłosowski G. 2019. Effect of culture medium on the growth of microscopic algae (Chlorophyceae) biomass showing biosorption potential: A case study Pseudopediastrum boryanum. Phycological Research 67: 112–119. DOI

Lenarczyk J., Saługa M. 2018. Evolutionary relationships between the varieties of green algae Pediastrum boryanum and P. duplex s.l. (Chlorophyceae, Hydrodictyaceae). Fottea 18: 170‒188. DOI

Lenarczyk J. 2016. Morphological plasticity of the microscopic green alga Pseudopediastrum boryanum (Chlorophyceae) under varying nutrient concentrations. Nova Hedwigia 102: 373–390. DOI

Lenarczyk J., McManus H.A. 2016. Testing the boundaries of the green algal species Pediastrum alternans (Chlorophyceae) using conventional, geometric morphometric and phylogenetic methods. Phycologia 55: 515–530. DOI