Janusz Kloskowski, PhD

Assistant Professor

e-mail: janusz6kl@gmail.com
phone: +48 61 8487609, room 337

ORCID ID: 0000-0002-0525-2421
Google Scholar
Research Gate

Scientific interests

Trophic and non-trophic interactions in aquatic ecosystems. Parental care and parent-offspring conflicts in birds. Amphibian conservation. Larval stage in amphibians, interspecific interaction, anti-predator adaptations. Wildlife-fisheries conflicts. Ecological traps. Protection of fen-mire ecosystems


2001 – PhD, biological sciences, ecology, Faculty of Biology and Earth Sciences, Maria Curie-Skłodowska University, Lublin

2012 – DSc biological sciences, ecology, Faculty of Biology and Biochemistry, Maria Curie-Skłodowska University, Lublin

Experience and employment

1993-2014 assistant, assistant professor, Institute of Biology, Maria Curie-Skłodowska University, Lublin.
2014 – assistant professor, Institute of Zoology, Poznań University of Life Sciences, Poznań


2001, 2013 – UMCS rector prize for creative scientific achievements



“Environmental conservation”

Selected Projects

2006-2011 project LIFE Nature “Conserving Acrocephalus paludicola in Poland and Germany” – LIFE05 NAT/PL/000101 (Chief Technical Advisor)

2006-2008: „Fish ponds as ecological traps: the effects of fish age-structure on macroinvertebrates and amphibian larvae; consequences for breeding success of Great Crested Grebes (Podiceps criststus) and Red-necked Grebes (Podiceps grisegena)” – MNiSW 2 P04G 050 30 (project coordinator)

2003/2004: „Habitat selection in wintering grebes in Donana National Park” – grant European Community’s Improving Human Potential (IHP) Access to Research Infrastructures Programme (project coordinator)

2002-2004: „Division of parental resources in broods of the Red-necked Grebe (Podiceps grisegena): the roles of parents and offspring” – KBN, 3 PO4F 036 23 (project coordinator)

2001-2002: „Trophic interactions between the Red-necked Grebe (Podiceps grisegena) and Common Carp (Cyprinus carpio): from predation to competition” –  KBN, 6 PO4F 066 20 (project coordinator)

Selected Publications


Kaczmarek J. M., Kaczmarski M., Mazurkiewicz J., Kloskowski J. 2018. A matter of proportion? Associational effects in larval anuran communities under fish predation. Oecologia 187, 745–753.

Bellebaum, J., Szostek, K. L., & Kloskowski, J. 2018. Population dynamics and survival of the Red-necked Grebe Podiceps grisegena: results from a long-term study in eastern Poland. Journal of Ornithology, 159, 631-641.

Nieoczym M., Kloskowski J. 2018. Habitat selection and reproductive success of coot Fulica atra on ponds under different fish size and density conditions. Hydrobiologia, 820, 267-279.

Kloskowski J. 2018. Total non-consumptive effects of fish on Pelobates fuscus and Hyla orientalis tadpoles in pond enclosure experiments. Zoological Science, 35, 528-534.

Tanneberger F., Kloskowski J., Knöfler V., Kozulin A., Marczakiewicz P., Morkvėnas Ž., Poluda A., Végvári Z., Vergeichik L., Flade M. 2018. Breeding habitat requirements. W: Tanneberger F., Kubacka J. The Aquatic Warbler Conservation Handbook. Brandenburg State Office for Environment, Potsdam, ss. 34-45.

Bellebaum J., Kloskowski J., Flade M. 2018. Recommended research and monitoring in breeding sites. W: Tanneberger F., Kubacka J. The Aquatic Warbler Conservation Handbook. Brandenburg State Office for Environment, Potsdam, ss. 216-223.


Kloskowski J., Kaczanowska E., Krogulec J., Grela P. Hematological indicators of habitat quality: erythrocyte parameters reflect greater parental effort of Red-necked Grebes under ecological trap conditions. Condor 119, 239–250.Kloskowski J., Frączek, K. A novel strategy to escape a poor habitat: red-necked grebes transfer flightless young to other ponds. Acta Ethologica (in print).


Kloskowski J., Filipiuk M., Polak M., & Fryderyk S. Low prevalence but high intensity of infestation by amblyceran lice in red-necked grebes (Podiceps grisegena) in Eastern Poland. Waterbirds 39, 408-412.


Kloskowski J., Tanneberger F., Marczakiewicz P., Wiśniewska A. & Choynowska A. Optimal habitat conditions for the globally threatened Aquatic Warbler Acrocephalus paludicola in eastern Poland and their implications for fen management. Ibis 157, 406-412.
Nieoczym M., Kloskowski J. Responses of epibenthic and nektonic macroinvertebrate communities to a gradient of fish size in ponds. Journal of Limnology 74, 50-62.
Kloskowski J., Trembaczowski A. Fish reduce habitat coupling by a waterbird: evidence from combined stable isotope and conventional dietary approaches. Aquatic Ecology 49, 21-31.2014Nieoczym M., Kloskowski J. The role of body size in the impact of common carp Cyprinus carpio on water quality,zooplankton, and macrobenthos in ponds. International Review of Hydrobiology 19, 212–221.


Kloskowski J., Rechulicz J., Jarzynowa, B. Resource availability and use by Eurasian otters Lutra lutra in a heavily modified river-canal system. Wildlife Biology 19, 439-451.


Kloskowski J. Fish stocking creates an ecological trap for an avian predator via effects on prey availability. Oikos 121, 1567–1576.

Kloskowski J., Grela P., Gąska M. The role of male nest building in post-mating sexual selection in the monogamous red-necked grebe. Behaviour 149, 81-88.


Kloskowski J. Human–wildlife conflicts at pond fisheries in eastern Poland: perceptions and management of wildlife damage. European Journal of Wildlife Research 57, 295–304.

Kloskowski J. Impact of common carp Cyprinus carpio on aquatic communities: direct trophic effects versus habitat deterioration. Fundamental and Applied Limnology 178, 245–255.

Kloskowski J. Consequences of the size structure of fish populations for their effects on a generalist avian predator. Oecologia 166, 517-530.

Kloskowski J. Differential effects of age-structured common carp (Cyprinus carpio) stocks on pond invertebrate communities: implications for recreational and wildlife use of farm ponds, Aquaculture International 6, 1151-1164.


Kloskowski J., Nieoczym M., Polak M., Pitucha P. Habitat selection by breeding waterbirds at ponds with size-structured fish populations. Naturwissenschaften 97, 673–682.

Kloskowski J. Fish farms as amphibian habitats: factors affecting amphibian species richness and community structure at carp ponds in Poland. Environmental Conservation 37, 187-194.


Kloskowski J., Green A., Polak M., Bustamante J., Krogulec J. Complementary use of natural and artificial wetlands by waterbirds wintering in Doñana, south-west Spain. Aquatic Conservation-Marine and Freshwater Ecosystems 19, 815-826.

Kloskowski J. Size-structured effects of common carp on reproduction of pond-breeding amphibians. Hydrobiologia 635, 205–213.