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Klaus Jürgens - Publications



●  Beier, S., Shen, D., Schott, T., Jürgens, K. (2017): Metatranscriptomic data reveal the effect of different community properties on multifunctional redundancy. Molec. Ecol. 26: 6813-6826.

●  Anderson, R., Jürgens, K., Hansen, P.J. (2017):  Mixotrophic phytoflagellate bacterivory field measurements strongly biased by standard approaches: a case study. Front. Microbiol. 8: 1398. Doi: 10.3389/fmicb.2017.01398

●  Köstner, N., Scharnreitner, L., Jürgens, K., Labrenz, M., Herndl, G.J.,Winter, C. (2017): High viral abundance as a consequence of low viral decay in the Baltic Sea redoxcline. Plos One 12(6): e0178467.

●  Rogge, A., Vogts, A., Voss, M., Jürgens, K., Jost, G., Labrenz, M. (2017): Success of chemolithoautotrophic SUP05 and Sulfurimonas GD17 cells in pelagic Baltic Sea redox zones is facilitated by their lifestyles as k- and r-strategists. Environ.Microbiol. 19: 2495-2506.

●  Herlemann, D.P.R., Manecki, M., Dittmar, T., Jürgens, K. (2017): Limited decomposition of terrigenous dissolved organic matter in the Baltic Sea: Role of abiotic and biotic factors. Environ.Microbiol. 19: 3098-3117.

●  Andersson, A., Tamminen, T., Lehtinen, S., Jürgens, K., Labrenz, M., Viitasalo, M. (2017): The pelagic food web. In: Biological Oceanography of the Baltic Sea, Eds: Snoeijs-Leijonmalm, P., Schubert, H., Radziejewska, T. (eds). Springer: p.281-332.

  Fuchs, A., Klier, J., Pinto, F., Selmeczy, G.B., Szabó, B., Padisák, J., Jürgens, K., Casper, P. (2017): Effects of artificial thermocline deepening on sedimentation rates and microbial processes in the sediment. Hydrobiologia 799: 65-81.

  Seidel, M., Manecki, M., Herlemann, D.P.R., Deutsch, B., Schulz-Bull, D., Jürgens, K., Dittmar, T. (2017): Composition and transformation of dissolved organic matter in the Baltic Sea. Front. Earth Sci. 5: 31.doi: 10.3389/feart.2017.00031

   Weber, F., Mylnikov, A.P., Jürgens, K., Wylezich, C. (2017): Culturing Protists from the Baltic Sea: Mostly the “usual suspects” but a few novelties as well. J. Euk. Microbiol. 64: 153-163

   v.Scheibner, M., Sommer, U., Jürgens, K. (2017): Tight Coupling of Glaciecola spp. and diatoms during cold-water phytoplankton spring blooms. Front. Microbiol. 8: 27. doi: 10.3389/fmicb.2017.00027




D. Numberger, G. Dehnhardt, D. Herlemann, K. Jürgens, H. Schulz-Vogt (2016): Comparative analysis of the fecal flora of five harbor seals (Phoca vitulina). MicrobiologyOpen doi: 10.1002/mbo3.369.

D. Herlemann, D. Lundin, A. Andersson, M. Labrenz, K. Jürgens (2016): Phylogenetic signals of salinity and season in bacterial community composition across the salinity gradient of the Baltic Sea. Frontiers Microbiol. 7:1883.doi: 10.3389/fmicb.2016.01883

B. Bergen, S. Endres, A. Engel, M. Zark, T. Dittmar, U. Sommer, K. Jürgens (2016): Acidification and warming affect prominent bacteria during two seasonal phytoplankton bloom mesocosms. Environ. Microbiol. 18: 4579–4595.

T.H. Haileselasie, J. Mergeay, L.J .Weider, R. Sommaruga,  T.A. Davidson, M. Meerhoff, H., Arndt, K. Jürgens, E. Jeppesen, L. D. Meester (2016): Environment not dispersal limitation drives clonal composition of Arctic Daphnia in a recently deglaciated area. Molec.Ecol. 25: 5830-5842.



Eronen-Rasimus, E., Lyra, C., Rintala, J.-M., Jürgens, K., Ikonen, V., Kaartokallio, H. (2015): Ice formation and growth shape bacterial community structure in Baltic Sea drift ice. FEMS Microbiol. Ecol. 91: doi: 10.1093/femsec/fiu022

Berg, C., Listmann, L., Vandieken, V., Vogts, A., Jürgens, K. (2015): Chemoautotrophic growth of ammonia-oxidizing Thaumarchaeota enriched from a pelagic redox gradient in the Baltic Sea. Front. Microbiol. 5: 786. doi: 10.3389/fmicb.2014.00786

Berg, C., Vandieken, V., Thamdrup, B., Jürgens, K. (2015): Significance of archaeal nitrification in hypoxic waters of the Baltic Sea. ISME J. 9: 1319-1332.

Bergen, B., Herlemann, D.P.R., Jürgens, K. (2015): Zonation of bacterioplankton communities along aging upwelled water in the northern Benguela upwelling. Frontiers in Microbiology. Doi: 10.3389/fmicb.2015.00621

Mylnikov, A.P., Weber, F., Jürgens, K., Wylezich, C. (2015): Massisteria marina has a sister: Massisteria voersi sp. nov., a rare species isolated from coastal waters of the Baltic Sea. Europ. J. Protistol. 51: 299-310

Orlikowska, A., Stolle, C., Pollehne, F., Jürgens, K., Schulz-Bull, D.E. (2015): Dynamics of halocarbons in coastal surface waters during short term mesocosm experiments. Environ. Chem. 12:515-525.

Rieck, A., Herlemann, D.P.R., Jürgens, K., Grossart, H.-P. (2015): Particle-associated differ from free-living bacteria in surface waters of the Baltic Sea. Frontiers in Microbiology, Vol.6, doi:10.3389/fmicb.2015.01297



Salka, I., Wurzbacher, C., Garcia, S.L., Labrenz, M., Jürgens, K., Grossart, H.-P. (2014): Distribution of acI-Actinorhodopsin genes in Baltic Sea salinity gradients indicates adaptation of facultative freshwater photoheterotrophs to brackish waters. Environ. Microb. 16: 586-597.

Glaubitz, S., Abraham, W.-R., Jost, G., Labrenz, M., Jürgens, K. (2014): Pyruvate utilization by a chemolithoautotrophic epsilonproteobacterial key player of pelagic Baltic Sea redoxclines. FEMS Microb. Ecol. 87: 770–779.

v.Scheibner, M., Dörge, P., Biermann, A., Sommer, U., Hoppe, H.-G., Jürgens, K. (2014): Impact of warming on phyto-bacterioplankton coupling and bacterial community composition in experimental mesocosms. Environ. Microbiol. 16: 718-733.

Mikkel Bentzon-Tilia, M., Farnelid, H., Jürgens, K., Riemann, L. (2014): Cultivation and isolation of N2-fixing bacteria from suboxic waters in the Baltic Sea. FEMS Microb. Ecol. 88: 358-371.

 Herlemann, D.P.R., Manecki, M., Meeske, C., Pollehne, F., Labrenz, M., Schulz-Bull, D., Dittmar, T., Jürgens, K. (2014): Uncoupling of bacterial and terrigenous dissolved organic matter dynamics in decomposition experiments. PLOS One 9(4): e93945.doic: 10.1371/journal.pone.0093945

Weber, F., Anderson, R., Foissner, W., Mylnikov, A.P., Jürgens, K. (2014): Morphological and molecular approaches reveal highly stratified protist communities along Baltic Sea pelagic redox gradients. Aquat. Microb. Ecol. 73: 1-16

 Bergen, B., Herlemann, D.P.R., Labrenz, M., Jürgens, K. (2014): Distribution of the verrucomicrobial clade Spartobacteria along a salinity gradient in the Baltic Sea. Environ. Microbiol. Reports 6: 625-630.

 Herlemann, D.P.R., Woelk, J., Labrenz, M., Jürgens, K. (2014): Diversity and abundance of “Pelagibacterales” (SAR11) in the Baltic Sea salinity gradient. Syst. Appl. Microbiol. 37: 601-604.

Frey, C., Hietanen, S., Jürgens, K., Labrenz, M., Voss, M. (2014): N and O isotope fractionation in nitrate during chemolithoautotrophic denitrification by Sulfurimonas gotlandica. Environ. Sci. Technol. 48: 13229–13237.



Anderson, R., Wylezich, C., Glaubitz, S., Labrenz, M., Jürgens, K. (2013): Impact of protist grazing on a key bacterial group for biogeochemical cycling in Baltic Sea pelagic oxic/anoxic interfaces. Environ. Microbiol. 15: 1580-1594.

Bruckner, C.G., Mammitzsch, K., Jost, G., Wendt, J., Labrenz, M., Jürgens, K. (2013) Chemolithoautotrophic denitrification of epsilonproteobacteria in marine pelagic redox gradients. Environ. Microbiol. 15: 1505-13

Farnelid, H., Bentzon-Tilia, M., Andersson, A.F., Bertilsson, S., Jost, G., Labrenz, M., Jürgens, K., Riemann, L. (2013): Active nitrogen-fixing heterotrophic bacteria at and below the chemocline of the central Baltic Sea. ISME J. 7: 1413-1423.

Glaubitz, S., Kießlich, K., Meeske, C., Labrenz, M., Jürgens, K. (2013): SUP05 dominates the gammaproteobacterial sulfur oxidizer assemblages in pelagic redoxclines of the central Baltic and Black Seas. Appl. Environ. Microbiol. 79: 2767-2776.

Berg, C., Beckmann, S., Jost, G., Labrenz, M., Jürgens, K. (2013): Acetate-utilizing bacteria at an oxic-anoxic interface in the Baltic Sea. FEMS Microb. Ecol. 85: 251-261.

Herlemann, D.P.R., Lundin, D., Labrenz, M., Jürgens, K., Zheng, Z., Aspeborg, H., Andersson, A.F. (2013): Metagenomic de novo assembly of an aquatic representative of the verrucomicrobial class Spartobacteria. mBio 4(3): doi:10.1128/mBio.00569-12.

Labrenz, M., Grote, J., Mammitzsch, K., Boschker, H. T. S., Laue, M., Jost, G., Glaubitz, S., Jürgens, K. (2013). Sulfurimonas gotlandica sp. nov., a chemoautotrophic and psychrotolerant epsilonproteobacterium isolated from a pelagic Baltic Sea redoxcline, and an emended description of the genus Sulfurimonas. Int. J. Syst. Evol. Microbiol. 63:4141-4148

Mammitzsch, K., Jost, G., Jürgens, K. (2013): Impact of dissolved inorganic carbon concentrations and pH on growth of the chemolithoautotrophic epsilonproteobacterium Sulfurimonas gotlandica GD1T. MicrobiologyOpen doi: 10.1002/mbo3.153



Grote, J., Schott, T., Bruckner, C.G., Glöckner, F.O., Jost, G., Teeling, H., Labrenz, M., Jürgens, K. (2012): Genome and physiology of a model Epsilonproteobacterium responsible for sulfide detoxification in marine oxygen depletion zones. Proc. Nat. Acad. Sci. USA 109: 506-510.

Feike, J., Jürgens, K., Hollibaugh, JT, Krüger, S., Jost, G., Labrenz, M. (2012): Measuring unbiased metatranscriptomics in pelagic aerobic ammonium oxidation zones of the central Baltic Sea based on a new in situ fixation system. ISME J. 6: 461-470.

Hietanen S., Jäntti H., Buizert C., Jürgens K, Labrenz, M., Voss M., Kuparinen J. (2012): Hypoxia and nitrogen processing in the Baltic Sea water column. Limnol. Ocenogr. 57: 325-337.

 Wey, J.K., Jürgens, K., Weitere, M. (2012): Seasonal and successional influences on bacterial community composition exceed that of protozoan grazing in river biofilms. Appl. Environ. Microbiol. 78: 2013-2024.

Weber, F., Campo, J.d., Wylezich, C., Massana, R., Jürgens, K. (2012): Unveiling trophic functions of uncultured protist taxa by incubation experiments in the brackish Baltic Sea. PLOS One 7: e41970. doi: 10.1371/journal.pone.0041970

Lewandowska, A.M., Breithaupt, P., Hillebrand, H., Hoppe, H.-G., Jürgens, K., Sommer, U. (2012): Responses of primary productivity to increased temperature and phytoplankton diversity. J. Sea Res. 72: 87-93.

Anderson, R., Winter, C., Jürgens, K. (2012): Relevance of protist grazing and viral lysis as prokaryotic mortality factors for Baltic Sea oxic-anoxic interfaces. Mar. Ecol. Prog. Ser. (in press)

Bruckner, C.G., Mammitzsch, K., Jost, G., Wendt, J., Labrenz, M., Jürgens, K. (2012) Chemolithoautotrophic denitrification of epsilonproteobacteria in marine pelagic redox gradients. Environ. Microbiol. doi:10.1111/j.1462-2920.2012.02880.x

Wylezich, C., Karpov, S.A., Mylnikov, A.P., Anderson, R., Jürgens, K. (2012): Ecologically relevant choanoflagellates collected from hypoxic water masses of the Baltic Sea have untypical mitochondrial cristae. BMC Microbiology 12:271; DOI: 10.1186/1471-2180-12-271




 Wohlers-Zöllner, J., Breithaupt, P., Walther, K., Jürgens, K., Riebesell, U. (2011): Temperature and nutrient stoichiometry interactively modulate organic matter cycling in a pelagic algal-bacterial community. Limnol. Oceanogr. 56: 599-610 

Stolle, C., Labrenz, M., Meeske, C., Jürgens, K. (2011): Bacterioneuston community structure in the Southern Baltic Sea and its dependence on meteorological conditions. Appl. Environ. Microbiol. 77: 3726-3733.

Anderson, R., Kjelleberg, S., McDougald, D., Jürgens, K. (2011): Species-specific patterns in the vulnerability of carbon-starved bacteria to protist grazing. Aquat. Microb. Ecol. 64: 105-116.

Herlemann, D.P.R., Labrenz, M., Jürgens, K., Bertilsson, S., Waniek, J.J., Andersson, A.F. (2011): Transitions in bacterial communities along the 2000 km salinity gradient of the Baltic Sea. ISME J. 5: 1571-1579.

Wylezich, C., Jürgens, K. (2011): Protist diversity in suboxic and sulfidic waters of the Black Sea. Environ. Microbiol. 13: 2939-2956.




Glaubitz, S., Labrenz, M., Jost, G., Jürgens, K. (2010): Diversity of active chemolithoautotrophic prokaryotes in the sulfidic zone of a Black Sea pelagic redoxcline as determined by 16S rRNA-based stable isotope probing. FEMS Microb. Ecol. 74: 32-41.

Stolle, C., Nagel, K., Labrenz, M., Jürgens, K. (2010): Succession of the sea-surface microlayer in the Baltic Sea under natural and experimentally induced low wind conditions. Biogeosciences 7: 2975-2988.

Labrenz, M., Sintes, E., Toetzke, F., Zumsteg, A., Herndl, G.J., Seidler, M., Jürgens, K. (2010): Relevance of a crenarchaeotal subcluster related to Candidatus Nitrosopumilus maritimus to ammonia oxidation in the suboxic zone of the central Baltic Sea. ISME J. 4: 1496-1508.




Zöllner, E., Hoppe, H.-G., Sommer, U., Jürgens, K. (2009): Effect of zooplankton-mediated trophic cascades on marine microbial food web components (bacteria, nanoflagellates, ciliates). Limnol. Oceanogr. 54: 262-275.

Glaubitz, S., Lueders, T., Abraham, W.-R., Jost, G., Jürgens, K., Labrenz, M. (2009): 13C isotope analyses reveal that chemolithoautotrophic Gamma- and Epsilonproteobacteria feed a microbial food web in a pelagic redoxcline of the central Baltic Sea. Environ. Microbiol. 11: 326-337.

Rodríguez-Martínez, R., Labrenz, M., del Campo, J., Jürgens, K., Massana, R. (2009): Distribution and abundance of the uncultured protist MAST-4 in several oceanic settings by quantitative PCR. Environ. Microbiol. 11: 397-408.

Ayo, B., Latatu, A., Artolozaga, I., Jürgens, K., Iriberri, J (2009): Factors affecting preference responses of the freshwater ciliate Uronema nigricans to bacterial prey. J. Euk. Microbiol. 56: 188-193.

Wohlers, J., Engel, A., Zöllner, E., Breithaupt, P., Jürgens, K., Hoppe, H.-G., Sommer, U., Riebesell, U. (2009): Changes in biogenic carbon flow in response to sea surface warming. Proc. Nat. Acad. Sci. USA 106: 7067-7072.

Deines, P., Matz, C., Jürgens, K. (2009): Toxicity of violacein-producing bacteria fed to bacterivorous freshwater plankton. Limnol. Oceanogr. 54: 1343-1352.

Stock, A., Jürgens, K., Bunge, J., Stoeck, T. (2009): Protistan diversity in the suboxic and anoxic waters of the Gotland Deep (Baltic Sea) as revealed by 18S rRNA clone libraries. Aquat. Microb. Ecol.: 55: 267-284.

Stolle, C., Nagel, K., Labrenz, M., Jürgens, K. (2009): Bacterial activity in the sea-surface microlayer: in situ investigations in the Baltic Sea and the influence of sampling devices. Aquat. Microb. Ecol.  58: 67-78





Jost, G., Zubkov, M.V., Yakushev, E., Labrenz, M. Jürgens, K. (2008): High abundance and production of chemolithoautotrophic bacteria in anoxic waters of the Baltic Sea. Limnol. Oceanogr. 53: 14-22.

Jürgens, K., Massana, R. (2008): Protistan grazing on marine bacterioplankton. In: D.Kirchman (ed.) Microbial Ecology of the Ocean, 2nd edition. Wiley-Liss, pp 383-441.

Atamna-Ismaeel, N., Sabeh, G., Sharon, I., Witzel, K.-P., Labrenz, M., Jürgens, K., Barkay, T., Stomp, M., Huisman, J., Beja, O. (2008):Widespread distribution of proteorhodopsins in freshwater and brackish ecosystems. ISME J. 2: 656-662.

Hoppe, H.-G., Breithaupt, P., Walther, K., Koppe, R., Bleck, S., Sommer, U., Jürgens, K. (2008): Climate warming in winter affects the coupling between phytoplankton and bacteria during the spring bloom: a mesocosm study. Aquat. Microb. Ecol. 51: 105-115

Salka, I., Moulisová, V., Koblížek, M., Jost, G., Jürgens, K., Labrenz, M. (2008): Concentration, depth distribution and composition of aerobic bacteriochlorophyll a producing assemblages in four deeps of the central Baltic Sea. Appl. Environ. Microbiol. 74: 4398-4404.

Corno, G., Jürgens, K. (2008): Structural and functional patterns of bacterial communities in response to protist predation along an experimental productivity gradient. Environ. Microbiol. 10: 2857-2871.

Montagnes, D.J.S.,Barbosa, A.B., Boenigk, J., Davidson, K., Jürgens, K., Macek, M., Parry, J., Roberts, E.C., Šimek, K (2008): Selective feeding behaviour of key free-living protists: avenues for continued study. Aquat. Microb. Ecol. 53: 83-98.

Vázquez-Domínguez, E., Duarte, C.M., Agustí, S., Jürgens, K., Vaqué, D., Gasol, J.M. (2008): Microbial plankton abundance and heterotrophic activity across the Central Atlantic Ocean. Progress in Oceanography 79: 83-94.

Grote, J., Jost, G., Labrenz, M., Herndl, G., Jürgens, K. (2008): Epsilonproteobacteria represent the major portion of chemoautotrophic bacteria in sulfidic waters of pelagic redoxclines of the Baltic and Black Seas. Appl. Environ. Microbiol. 74: 7546-7551




Labrenz, M., Jost, G., Jürgens, K. (2007). Distribution of abundant prokaryotic organisms in the water column of the central Baltic Sea with an oxic-anoxic interface. Aquat. Microb. Ecol. 46:177-190.

Jeppesen, E., Søndergaard, M., Pedersen, A.R., Jürgens, K., Strelczak, A., Lauridsen, T.L., Johansson, L.S. (2007): Salinity induced regime shift in shallow brackish lagoons. Ecosystems 10: 47-57

Hannig, M., Lavik, G., Kuypers, M.M.M., Woebken, D., Martens-Habbena, W., Jürgens, K. (2007): Shift from denitrification to anammox after inflow events in the central Baltic Sea. Limnol. Oceanogr. 52: 1336-1345

Falk, S., Hannig, M., Braker, G., Wardenga, R., Köster, M., Jürgens, K., Gliesche, C. (2007): NirS containing denitrifier communities in the water column and sediment of the Baltic Sea. Biogeosciences 4: 255-268

Grote, J., Labrenz, M., Pfeiffer, B., Jost, G., Jürgens, K. (2007): Quantitative distribution of Epsilonproteobacteria and a Sulfurimonas subgroup in pelagic redoxclines of the central Baltic Sea. Appl. Environ. Microbiol. 73: 7155-7161.




Corno, G., Jürgens, K. (2006): Direct and indirect effects of protist predation on the population size structure of a bacterial strain with high phenotypic plasticity. Appl. Environ. Microbiol. 72: 78-86.

Hannig, M., Braker, G., Dippner, J.W., Jürgens, K. (2006.): Linking denitrifier community structure and prevalent biogeochemical parameters in the pelagial of the central Baltic Proper (Baltic Sea). FEMS Microb. Ecol. 57: 260-271

Jürgens, K. (2006): Predation on bacteria and bacterial resistance mechanisms: Comparative aspects among different predator groups in aquatic systems. In: Predatory Prokaryotes, E. Jurkevitch (ed.). Microbiology Monographs 4: 57-92.





Matz, C., Jürgens, K. (2005): High motility reduces the grazing mortality of planktonic bacteria. Appl. Environ. Microbiol. 71: 921-929

Berglund, J., Jürgens, K., Bruchmüller, I., Wedin, M., Andersson, A. (2005): Use of group-specific PCR primers for identification of chrysophytes by denaturing gradient gel electrophoresis. Aquat. Microb. Ecol. 39: 171-182

Becks, L., Hilkert, F.M., Malchow, H., Jürgens, K., Arndt, H. (2005): Experimental demonstration of chaos in a microbial food web. Nature 435: 1226-1229

Labrenz, M., Jost, G., Pohl, C., Beckmann, S., Martens-Habbena, W., Jürgens, K. (2005): Impact of varying in vitro electron donator/-acceptor conditions on potential chemolithoautotrophic communities from pelagic redoxclines. Appl. Environ. Microbiol. 71: 6664-6672.




Matz, C. , Deines, P., Boenigk, J., Arndt, H., Eberl, L., Kjelleberg, S., Jürgens, K. (2004): Effect of violacein-producing bacteria on survival and feeding of bacterivorous nanoflagellates. Appl. Environ. Microbiol. 70: 1593-1599

Pernthaler, J., Zöllner, E., Warnecke, F., Jürgens, K. (2004): A bloom of filamentous bacteria in a mesotrophic lake: identity and potential controlling mechanism. Appl. Environ. Microbiol. 70: 6272-6281

Sala, M., Jürgens, K. (2004): Bacterial growth on macrophyte leachate in the presence and absence of bacterivorous protists. Arch. Hydrobiol. 161: 371-389




Massana, R., Jürgens, K. (2003): Composition and population dynamics of planktonic bacteria and bacterivorous flagellates in seawater chemostat cultures. Aquat. Microb. Ecol. 32: 11-22

Matz, C., Jürgens, K. (2003): Interaction of nutrient limitation and protozoan grazing determines the phenotypic composition of a bacterial community. Microb. Ecol. 45: 384-398

Sommer, U., Sommer, F., Santer, B., Zöllner, E., Jürgens, K., Jamieson, C., Boersma, M., Gocke, K. (2003): Daphnia versus copepod impact on summer phytoplankton: functional compensation at both trophic levels. Oecologia 135: 639-647

Zöllner, E., Santer, B., Boersma, M., Hoppe, H.-G., Jürgens, K. (2003): Cascading predation effects of Daphnia and copepods on microbial food web components. Freshw. Biol. 48: 2174-2193




Matz, C., Boenigk, J., Arndt, H., Jürgens, K. (2002): Role of bacterial phenotypic traits in selective feeding of the heterotrophic nanoflagellate Spumella sp. Aquat. Microb. Ecol. 27: 137-148.

Boenigk, J., Matz, C., Jürgens, K., Arndt, H. (2002): Food concentration-dependent regulation of food selectivity of interception-feeding bacterivorous nanoflagellates. Aquat. Microb. Ecol. 27: 195-202.

Matz, C., Deines, P, Jürgens, K. (2002): Phenotypic variation in Pseudomonas sp. CM10 determines microcolony formation and survival under protozoan grazing. FEMS Microbiol. Ecol. 39: 57-65.

Jeppesen, E., Søndergaard, Ma., Søndergaard, Mo., Christoffersen, K. Theil-Nielsen, J., Jürgens, K. (2002): Cascading trophic interactions in the littoral zone: an enclosure experiment in shallow Lake Stigsholm, Denmark. Arch. Hydrobiol. 153: 533-555

Jürgens, K., Matz, C. (2002): Predation as a shaping force for the phenotypic and genotypic composition of planktonic bacteria. Antonie van Leeuwenhoek 81: 413-434.

Degans, H., Zöllner, E., v.d. Gucht, K., de Meester, L., Jürgens, K. (2002): Rapid Daphnia-mediated changes in microbial community structure: an experimental study. FEMS Microbiol. Ecol. 42: 137-149.




Langenheder, S., Jürgens, K. (2001): Different effects of metazoan and protozoan predation on planktonic bacteria. Limnol. Oceanogr. 46: 121-134.

Matz, C., Jürgens, K. (2001): The effect of bacterial surface hydrophobicity on feeding rates of heterotrophic nanoflagellates. Appl. Environ. Microbiol. 67: 814

Boenigk, J., Matz, C., Jürgens, K., Arndt, H. (2001): Confusing selective feeding with differential digestion in bacterivorous nanoflagellates. J. Euk. Microbiol. 48: 425-432.

Boenigk, J., Matz, C., Jürgens, K., Arndt, H. (2001): The influence of preculture conditions and food quality on the ingestion and digestion process of three species of heterotrophic nanoflagellates. Microb. Ecol. 42: 168-176.

Zubkov, M. V., Zöllner, E., Jürgens, K. (2001): Digestion of bacterial macromolecules by a mixotrophic flagellate, Ochromonas sp., compared with that by two heterotrophic flagellates, Spumella pudica and Bodo saltans. Europ. J. Protozool. 37: 155-166.




Jürgens, K. Gasol, J.M., Vaqué, D. (2000): Bacteria-flagellate coupling in microcosm experiments in the Central Atlantic Ocean. J. Exp. Mar. Biol. Ecol. 245: 127-147.

Jürgens, K., Jeppesen, E. (2000): The impact of metazooplankton on the structure of the microbial food web in a shallow, hypertrophic lake. J. Plankt. Res. 22: 1047-1070.

Jürgens, K., Šimek, K. (2000): Functional response and particle size selection of Halteria cf. grandinella, a freshwater, oligotrichous ciliate. Aquat. Microb. Ecol. 22: 57-68.

Šimek, K., Jürgens, K., Nedoma, J., Comerma, M., Armengol, J. (2000): Ecological role and bacterial grazing of Halteria spp.: small freshwater oligotrichs as dominant pelagic ciliate bacterivores. Aquat. Microb. Ecol. 22: 43-56.

Jürgens, K., Sala, M. (2000): Predation-mediated shifts in size distribution of microbial biomass and activity during detritus decomposition. Oikos 91:29-40.



Before 2000


Jürgens, K., Skibbe, O., Jeppesen, E. (1999): Impact of metazooplankton on the composition and population dynamics of planktonic ciliates in a shallow, hypertrophic lake. Aquat. Microb. Ecol. 17: 61-75.

Jürgens, K., Pernthaler, J, Schalla, S., Amann, R. (1999): Morphological and compositional changes in a planktonic bacterial community in response to enhanced protozoan grazing. Appl. Environ. Microbiol. 65: 1241-1250.

Jürgens, K., Jeppesen, E. (1998): Cascading effects on microbial food web structure in a dense macrophyte bed. In: Jeppesen et al. (eds.): The Structuring Role od Submerged Macrophytes in Lakes. Ecological Studies 131, Springer Verlag, p. 262-273.

Jürgens, K., Arndt, H., Zimmermann, H. (1997): Impact of metazoan and protozoan grazers on bacterial biomass distribution in microcosm experiments. Aquat. Microb. Ecol. 12: 131-138.

Christoffersen, K., Nybroe, O., Jürgens, K., Hansen, M. (1997): Measurement of bacterivory by heterotrophic nanoflagellates using immunofluorescence labelling of ingested cells. Aquat. Microb. Ecol. 13: 127-134.

Jürgens, K., Wickham, S.A., Rothhaupt, K.O., Santer, B. (1996): Feeding rates of micro- and macrozooplankton on heterotrophic nanoflagellates. Limnol. Oceanogr. 41: 1833-1839.

Gasol, J.M., Jürgens, K., Massana, R., Calderón-Paz, J.I., Pedrós-Alió, C. (1995): Dynamics of a mass development of Daphnia pulex in a sulfide-rich pond (Lake Cisó). Arch. Hydrobiol. 132: 279-296.

Jürgens, K., Stolpe, G. (1995): Seasonal dynamics of crustacean zooplankton, heterotrophic nanoflagellates and bacteria in a shallow, eutrophic lake. Freshw. Biol. 33: 27-38.

Jürgens, K., DeMott, W.R. (1995): Behavioral flexibility in prey selection by bacterivorous nanoflagellates. Limnol. Oceanogr. 40: 1503-1507.

Jürgens, K., Arndt, H., Rothhaupt, K.O. (1994): Zooplankton-mediated changes of bacterial community structure. Microb. Ecol. 27: 27-42.

Jürgens, K., Gasol. J.M., Massana, R., Pedrós-Alió, C. (1994): Control of heterotrophic bacteria and protozoans by Daphnia pulex in the epilimnion of Lake Cisó. Arch. Hydrobiol. 131: 55-78.

Jürgens ,K. (1994): The impact of Daphnia on microbial food webs - a review. Mar. Microb. Food Webs 8: 295-324.

Massana, R., Gasol, J.M., Jürgens, K., Pedrós-Alió, C. (1994): Impact of Daphnia pulex on a metalimnetic microbial community. J. Plankt. Res. 16: 1379-1399.

Jürgens, K., Güde, H. (1994): The potential importance of grazing-resistant bacteria in planktonic food webs. Mar. Ecol. Prog. Ser. 112: 169-188.

Jürgens, K. (1992): Is there plenty of food for bacterivorous flagellates in eutrophic waters ? Arch. Hydrobiol. Beih. Ergebn. Limnol. 37: 195-205.

Jürgens, K., Güde, H. (1991): Seasonal changes in the grazing impact of phagotrophic flagellates on bacteria in Lake Constance. Mar. Microb. Food Webs 5: 27-37.

Güde, H., Jürgens, K., Parth, G., Walser, R. (1991): Indications for low net productivity of pelagic bacterioplankton. Kieler Meeresforsch. Sonderh. 8: 309-316.

Jürgens, K., Güde, H. (1990): Incorporation and release of phosphorus by planktonic bacteria and phagotrophic flagellates. Mar. Ecol. Prog. Ser. 59: 271-284.









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