Kenneth Dumack

I am Dr. Kenneth Dumack, a biologist working in the field of protistology. Some years ago, I started to explore the astonishing world of protists. Since then I absolved several modules associated with different research fields all around protistology, such as their ecology, diversity, phylogeny and biotechnology (of microalgae). My main interest is in species descriptions, phylogeny and autecology of non-bacterivorous protists. I focus on amoebae and amoeboflagellates in soils and their freshwater relatives. This website is meant to give an overview about my publications, interests and qualifications.

Work experience

01/2017 - present
Postdoctoral researcher and teaching assistant in the Terrestrial Ecology, University of Cologne.
10/2014 - present
Safety advisor in the Terrestrial Ecology, University of Cologne.
10/2014 - 01/2017
phD student in the Terrestrial Ecology, University of Cologne.
01/2012 - 04/2015
Scientific assistant in Michael Bonkowski's lab: Terrestrial Ecology with focus on protozoans, especially amoebae.
10/2013 - 01/2014
Internship at Hartmut Arndt's lab: limnic ecology, University of Cologne, with focus on protozoans, especially heterotrophic flagellates.
08/2013 - 10/2013
Internship at Sina Adl's lab: Department of Soil Science - University of Saskatchewan, Canada.
10/2012 - 08/2013
Multiple subject modules in Michael Melkonian's lab and ecology, with focus on genetical and morphological analyses of the biodiversity in heterotrophic and autotrophic protists and biotechnology of microalgae.
07/2011 - 09/2011
Internship at the Biologische Station Bonn with focus on ongoing field studies in renaturation of several habitat types and species preservation.


Duong Nguyen, Joaquín Abolafia, Kenneth Dumack, Michael Bonkowski, Reyes Peña-Santiago (2017). "Two known species of Aporcelinus Andrássy, 2009 (Dorylaimida: Aporcelaimidae) from Vietnam, with the first molecular study of the genus" Nematology

Kenneth Dumack, Sebastian Flues, Karoline Hermanns, Michael Bonkowski (2017). "Rhogostomidae (Cercozoa) from soils, roots and plant leaves (Arabidopsis thaliana): Description of Rhogostoma epiphylla sp. nov. and R. cylindrica sp. nov." European Journal of Protistology 60:76–86

Kenneth Dumack, Alexander P. Mylnikov, Michael Bonkowski (2017). "Evolutionary Relationship of the Scale-Bearing Kraken (incertae sedis, Monadofilosa, Cercozoa, Rhizaria): Combining Ultrastructure Data and a Two-Gene Phylogeny" Protist

Kenneth Dumack, Paul Mausbach, Mona Hegmann, Michael Bonkowski (2017). "Polyphyly in the Thecate Amoeba Genus Lecythium (Chlamydophryidae, Tectofilosida, Cercozoa), Redescription of its Type Species L. hyalinum, Description of L. jennyae sp. nov. and the Establishment of Fisculla gen. nov. and Fiscullidae fam. nov." Protist 168:294-310

Christophe Seppey, David Singer, Kenneth Dumack, Bertrand Fournier, Lassaâd Belbahri, Edward Mitchell, Enrique Lara (2017). "Distribution patterns of soil microbial eukaryotes suggests widespread algivory by phagotrophic protists as an alternative pathway for nutrient cycling." Soil Biology and Biochemistry 112:68-76

Kenneth Dumack, Hüsna Öztoprak, Lioba Rüger, Michael Bonkowski (2017). "Shedding light on the polyphyletic thecate amoeba genus Plagiophrys: Transition of some of its species to Rhizaspis (Tectofilosida, Thecofilosea, Cercozoa) and the establishment of Sacciforma gen. nov. and Rhogostomidae fam. nov. (Cryomonadida, Thecofilosea, Cercozoa)." Protist 168:92-108

Tice AK, Shadwick LL, Fiore-donno AM, Geisen S, Kang S, Schuler GA, Spiegel FW, Wilkinson KA, Bonkowski M, Dumack K, Lahr DJG, Voelcker E, Clauß S, Zhang J, Brown MW (2016). "Expansion of the molecular and morphological diversity of Acanthamoebidae (Centramoebida, Amoebozoa) and identification of a novel life cycle type within the group" Biology Direct

Kenneth Dumack, Christina Baumann, Michael Bonkowski (2016). "A Bowl with Marbles: Revision of the Thecate Amoeba Genus Lecythium (Chlamydophryidae, Tectofilosida, Cercozoa, Rhizaria) Including a Description of Four New Species and an Identification Key." Protist

Kenneth Dumack, Robert Koller, Bettina Weber, Michael Bonkowski (2016). "Estimated heterotrophic protist abundances and their diversity in South African biological soil crusts." South African Journal of Science

Kenneth Dumack, Julia Schuster, David Bass, Michael Bonkowski (2016). "A Novel Lineage of 'Naked Filose Amoebae'; Kraken carinae gen. nov. sp. nov. (Cercozoa) with a Remarkable Locomotion by Disassembly of its Cell Body." Protist

Poster Kraken carinae

Kenneth Dumack, Marina Müller, Michael Bonkowski (2016). "Description of Lecythium terrestris sp. nov. (Chlamydophryidae, Cercozoa), a Soil Dwelling Protist Feeding on Fungi and Algae." Protist

A video of a Lecythium terrestris culture, growing and starving:

Stefan Geisen, Robert Koller, Maike Hünninghaus, Kenneth Dumack, Tim Urich, Michael Bonkowski (2016). "The soil food web revisited: Diverse and widespread mycophagous soil protists." Soil Biology and Biochemistry

Walter S. Andriuzzi, Phuong-Thi Ngo, Stefan Geisen, Aidan M. Keith, Kenneth Dumack, Thomas Bolger, Michael Bonkowski, Lijbert Brussaard, Jack H. Faber, Abad Chabbi, Cornelia Rumpe, Olaf Schmidt (2015). "Organic matter composition and the protist and nematode communities around anecic earthworm burrows." Biology and Fertility of Soils doi:10.1007/s00374-015-1056-6

Conferences & Contributions

36th annual meeting of the German Society for Protozoology
Oral presentation "Where does the Kraken belong?"
Poster presentation "The testate amoeba Penardeugenia is no chlamydophryid but imbricatean."

Eukref Workshop
Participant in the Barcelona Eukref Workshop focussing on Amoebozoa and Rhizaria.

Moscow Forum «PROTIST–2016»
Oral presentation "The Chlamydophryidae revisited with special focus on the genus Lecythium"
Poster presentation "The base of cercomonad radiation is still in for a surprise, Kraken gen. nov." Recipient of the Holz-Conner Award.
Under the honorable mentions for both, the best posters and the best talks.

35th annual meeting of the German Society for Protozoology
Oral presentation "A bowl with marbles; the fungal and algal-eating amoeba genus Lecythium (Chlamydophryidae, Tectofilosida, Cercozoa, Rhizaria) revisited; phylogeny and the description of four new species"
Poster presentation "The base of cercomonad radiation is still in for a surprise, Kraken gen. nov."
Second winner of the presentation award and the poster award.

Guest talk in the University of Göttingen, invited by Valentyna Krashevska
Title: "Lecythium, the neglected testate amoebae. Insight into phylogeny, morphology and ecology with focus on L. terrestris sp. nov."

34th annual meeting of the German Society for Protozoology
Oral presentation "Lecythium terrestris, its morphology, phylogeny and autecology."
Winner of the presentation award.