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Staff List
Papers:
ksimek@hbu.cas.cz
+420 387 775 873| Grossart, H.P., Jezbera, J., Horňák, K., Hutalle, K.M.L., Buck, U., Šimek, K.
(2008) Top-down and bottom-up induced shifts in bacterial abundance, production and community composition in an experimentally divided humic lake. Environmental Microbiology, 10 (3): 635–652. Research impacted |
| Horňák, K., Jezbera, J., Šimek, K.
(2008) Effects of a Microcystis aeruginosa bloom and bacterivory on bacterial abundance and activity in a eutrophic reservoir. Aquatic Microbial Ecology, 52 (2): 107–117. Research impacted |
| Montagnes, D.J.S., Barbosa, A.B., Boenigk, J., Davidson, K., Jürgens, K., Macek, M., Parry, J.D., Roberts, E.C., Šimek, K.
(2008) Selective feeding behaviour of key free-living protists: avenues for continued study. Aquatic Microbial Ecology, 53 (1): 83–98. Research impacted |
| Šimek, K., Horňák, K., Jezbera, J., Nedoma, J., Znachor, P., Hejzlar, J., Seďa, J.
(2008) Spatio-temporal patterns of bacterioplankton production and community composition related to phytoplankton composition and protistan bacterivory in a dam reservoir. Aquatic Microbial Ecology, 51 (3): 249–262. Research impacted |
| Znachor, P., Zapomělová, E., Řeháková, K., Nedoma, J., Šimek, K.
(2008) The effect of extreme rainfall on summer succession and vertical distribution of phytoplankton in a lacustrine part of a eutrophic reservoir. Aquatic Sciences, 70 (1): 77–86. Research impacted |
| Posch, T.*, Mindl, B.*, Horňák, K., Jezbera, J., Salcher, M.M.*, Sattler, B.*, Sonntag, B.*, Vrba, J., Šimek, K.
(2007) Biomass reallocations within freshwater bacterioplankton induced by manipulating phosphorus availability and grazing. Aquatic Microbial Ecology, 49 (3): 223–232. Research impacted |
| Allers, E.*, Gómez-Consarnau, L.*, Pinhassi, J.*, Gasol, J.M.* , Šimek, K., Pernthaler, J.*
(2007) Response of Alteromonadaceae and Rhodobacteriaceae to glucose and phosphorus manipulation in marine mesocosms. Environmental Microbiology, 9 (10): 2417–2429. Research impacted |
| Weinbauer, M.G.*, Horňák, K., Jezbera, J., Nedoma, J., Dolan, J.R.*, Šimek, K.
(2007) Synergistic and antagonistic effects of viral lysis and protistan grazing on bacterial biomass, production and diversity. Environmental Microbiology, 9 (3): 777–788. Research impacted |
| Šimek, K, Weinbauer, M.G.*, Horňák, K., Jezbera, J., Nedoma, J., Dolan, J.R.*
(2007) Grazer and virus-induced mortality of bacterioplankton accelerates development of Flectobacillus populations in a freshwater community. Environmental Microbiology, 9 (3): 789–800. Research impacted |
| Salcher, M.M.*, Hofer, J.*, Horňák, K., Jezbera, J., Sonntag, B.*, Vrba, J., Šimek, K., Posch, T.*
(2007) Modulation of microbial predator-prey dynamics by phosphorus availability: Growth patterns and survival strategies of bacterial phylogenetic clades. FEMS Microbiology Ecology, 60 (1): 40–50. Research impacted |
| Groben, R.*, Hahn, M.W.*, Horňák, K., Mergeay, J.*, Šimek, K., Vrba, J.
(2007) Meeting report: ALTER-Net workshop about the “Application of molecular techniques to study biodiversity, structure and function of planktonic communities in lakes” at Blanes, Spain, February 15–16, 2007. Protist, 158 (4): 417–421. Others |
| Nedoma, J., García, J.-C.*, Comerma, M.*, Šimek, K., and Armengol J.* (2006) Extracellular phosphatases in a Mediterranean reservoir: seasonal, spatial and kinetic heterogeneity Freshwater Biology 51: 1264–1276 Research impacted |
| Horňák, K., Jezbera, J., Nedoma, J., Gasol, J.M.*, Šimek, K.
(2006) Effects of resource availability and bacterivory on leucine incorporation in different groups of freshwater bacterioplankton, assessed using microautoradiography. Aquatic Microbial Ecology, 45 (3): 277–289. Research impacted |
| Horňák, K., Jezbera, J., Nedoma, J., Šimek, K.
(2006) Decreased activity of free-living reservoir bacterioplankton during summer cyanobacterial bloom. In: Book of Abstracts, 5th International Conference on Reservoir Limnology and Water Quality, Brno, August 27–31, 2006. Biology Centre of the Academy of Sciences of the Czech Republic, Institute of Hydrobiology, České Budějovice; Centre for Cyanobacteria and Their Toxins, Masaryk University Brno. ISBN 80–86188–23–X: pp. 44–47. Others |
| Jezbera, J., Horňák, K., Šimek, K.
(2006) Prey selectivity of bacterivorous protists in different size fractions of reservoir water amended with nutrients. Environmental Microbiology, 8 (8): 1330–1339. Research impacted |
| Jezbera, J., Šimek, K., Tundisi, J.G.*
(2006) Basic microbiological characteristics of the Broa reservoir (Sao Paulo State, Brazil) – abundance of microbes, bacterial growth and protistan grazing on bacterial production. In: Book of Abstracts, 5th International Conference on Reservoir Limnology and Water Quality, Brno, August 27–31, 2006: Biology Centre of the Academy of Sciences of the Czech Republic, Institute of Hydrobiology, České Budějovice; Centre for Cyanobacteria and Their Toxins, Masaryk University Brno. ISBN 80–86188–23–X: pp. 57–59. Others |
| Šimek, K., Jezbera, J., Horňák, K., Nedoma, J., Hejzlar, J., Straškrábová, V.
(2006) Growth rates of major bacterioplankton groups in relation to phosphorus availability in a canyon-shaped reservoir. In: Book of Abstracts, 5th International Conference on Reservoir Limnology and Water Quality, Brno, August 27–31, 2006. Biology Centre of the Academy of Sciences of the Czech Republic, Institute of Hydrobiology, České Budějovice; Centre for Cyanobacteria and Their Toxins, Masaryk University Brno. ISBN 80–86188–23–X: pp. 40–43. Others |
| Straškrábová, V., Brandl, Z., Komárková, J., Macek, M., Seďa, J., Šimek, K., Vrba J.
(2006) Climate effeted spring events in pelagic succession of two reservoirs. In: Book of Abstracts, 5th International Conference on Reservoir Limnology and Water Quality, Brno, August 27–31, 2006. Biology Centre of the Academy of Sciences of the Czech Republic, Institute of Hydrobiology, České Budějovice; Centre for Cyanobacteria and Their Toxins, Masaryk University Brno. ISBN 80–86188–23–X: pp. 55–56. Others |
| Macek, M., Callieri, C.*, Šimek, K., Vázquez, A.L.*
(2006) Seasonal dynamics, composition and feeding patterns of ciliate assemblages in oligotrophic lakes covering a wide pH range. Archiv für Hydrobiologie, 166 (2): 261–287. Research impacted |
| Šimek, K., Horňák, K., Jezbera, J., Nedoma, J., Vrba, J., Straškrábová, V., Macek, M., Dolan, J.R.*, Hahn, M.W.*
(2006) Maximum growth rates and possible life strategies of different bacterioplankton groups in relation to phosphorus availability in a freshwater reservoir. Environmental Microbiology, 8 (9): 1613–1624. Research impacted |
| Horňák, K., Mašín, M., Jezbera, J., Bettarel, Y.*, Nedoma, J., Sime-Ngando, T.*, Šimek, K. (2005) Effects of decreased resource availability, protozoan grazing and viral impact on a structure of bacterioplankton assemblage in a canyon-shaped reservoir. FEMS Microbiology Ecology, 52 (3): 315–327. Research impacted |
| Jezbera, J., Horňák, K., Šimek, K. (2005) Food selection by bacterivorous protists: insight from the analysis of the food vacuole content by means of fluorescence in situ hybridization. FEMS Microbiology Ecology, 52 (3): 351–363. Research impacted |
| Šimek, K., Horňák, K., Jezbera, J., Mašín, M., Nedoma, J., Gasol, J.M.*, Schauer, M.* (2005) Influence of top-down and bottom-up manipulations on the R-BT065 subcluster of b-proteobacteria, an abundant group in bacterioplankton of a freshwater reservoir. Applied and Environmental Microbiology, 71 (5): 2381–2390. Research impacted |
| Straškrábová, V., Šimek, K., Vrba, J. (2005) Long-term development of reservoir ecosystems – changes in pelagic food webs and their microbial component. Limnetica, 24 (1–2): 9–20. Research non impacted |
| Štrojsová, A., Vrba, J., Nedoma, J., Šimek, K. (2005) Extracellular phosphatase activity of freshwater phytoplankton exposed to different in situ phosphorus concentrations. Marine and Freshwater Reseach, 56 (4): 417–424. Research impacted |
| Šimek, K., Jezbera, J., Horňák, K., Vrba, J., Seďa, J. (2004) Role of diatom-attached choanoflagellates of the genus Salpingoeca as pelagic bacterivores. Aquatic Microbial Ecology, 36: 257–269. Research impacted |
| Vrba, J., Callieri, C.*, Bittl, T.*, Šimek, K., Bertoni, R.*, Filandr, P.*, Hartman, P., Hejzlar, J., Macek, M., Nedoma, J. (2004) Are bacteria the major producers of extracellular glycolytic enzymes in aquatic environments? International Review of Hydrobiology, 89 (1): 102-117. Research impacted |
| Comerma, M.*, García, J.C.*, Romero, M.*, Armengol, J.*, Šimek, K. (2003) Carbon flow dynamics in the pelagic community of the Sau Reservoir (Catalonia, NE Spain). Hydrobiologia, 504 (Special Issue): 87-98. Research impacted |
| Jezbera, J., Nedoma, J., Šimek, K. (2003) Longitudinal changes in protistan bacterivory and bacterial production in two canyon-shaped reservoirs of different trophic status. Hydrobiologia, 504 (Special Issue): 115-130. Research impacted |
| Komárková, J., Šimek K. (2003) Unicellular and colonial formations of picoplanktonic cyanobacteria under variable environmental conditions and predation pressure. Archiv für Hydrobiologie Algological Studies, 109: 327-340. Research non impacted |
| Mašín, M., Jezbera, J., Nedoma J., Straškrabová, V., Hejzlar J., Šimek, K. (2003) Changes in bacterial community composition and microbial activities along the longitudinal axis of two canyon-shaped reservoirs with different inflow loading. Hydrobiologia, 504 (Special Issue): 99-113. Research impacted |
| Nedoma, J., Štrojsová, A., Vrba, J., Komárková, J., Šimek K. (2003) Extracellular phosphatase activity of natural plankton studied with ELF97 phosphate: fluorescence quantification and labelling kinetics. Environmental Microbiology, 5 (6): 462-472. Research impacted |
| Šimek, K., Horňák, K., Mašín, M., Christaki, U.*, Nedoma, J., Weinbauer, M.G.*, Dolan, J.R.* (2003) Comparing the effects of resource enrichment and grazing on a bacterioplankton community of a meso-eutrophic reservoir. Aquatic Microbial Ecology, 31(2): 123-135. Research impacted |
| Vrba, J., Nedoma, J., Kohout, L.*, Kopáček, J., Nedbalová, L.*, Ráčková, P.*, Šimek, K. (2003) Massive occurrence of heterotrophic flaments in acidified lakes: seasonal dynamics and composition. FEMS Microbiology Ecology, 46 (3): 281-294. Research impacted |
| Weinbauer, M.G.*, Christaki, U.*, Nedoma, J., Šimek, K. (2003) Comparing the effects of resource enrichment and grazing on viral production in a meso-eutrophic reservoir. Aquatic Microbial Ecology, 31 (2):137-144. Research impacted |
| Horňák K., Mašín M., Jezbera J., Nedoma J., Šimek K. (2003) Vliv živin a predace prvoků na složení společenstva bakterií přeneseného z živinami bohatého do živinami chudého prostředí přehradní nádrže [Effects of nutrients and protozoan grazing on community composition of bacteria that were transferred from a nutrient-rich to a nutrient-poor area of a reservoir]. Acta Facultatis Ecologiae: 10 (Suppl. 1): 23-25. Others |
| Mašín, M., Horňák, K., Jezbera, J., Nedoma, J., Šimek, K. (2003) Vliv živin a predace prvoky na změny morfologie bakterií při manipulačních pokusech v nádrži Římov [Effects of nutrients and protozoan grazing on changes of bacterial morphology during manipulation experiments in Římov reservoir]. Acta Facultatis Ecologiae: 10 (Suppl. 1): 27-30. Others |
| Nedoma, J., Vrba, J., Štrojsová, A., Šimek, K., Znachor, P. (2003) Možnosti využití analýzy obrazu při vyhodnocování mikrobiální biomasy a aktivity ve vzorcích přirozených vod [Use of image analysis for estimation of microbial biomass and activity in samples of natural aquatic ecosystems]. Acta Facultatis Ecologiae: 10 (Suppl. 1): 59-61. Others |
| Šimek, K., Horňák, K., Mašín, M., Nedoma, J., Weinbauer, M.* (2003) Faktory ovlivňující složení společenstev bakterioplanktonu [Factors shaping community composition of bacterioplankton]: Acta Facultatis Ecologiae: 10 (Suppl. 1): 19-21. Others |
| Straškrábová, V., Nedoma, J., Šimek, K., Vrba, J. (2003) Pelagic microbial assemblages in oligotrophic mountain lakes. Acta Facultatis Ecologiae: 10 (Suppl. 1): 15-18. Others |
| Bettarel, Y.*, Dolan, J.R.*, Horňák, K., Lemée, R.*, Mašín, M., Pedrotti, M.-L.*, Rochelle-Newall, E.*, Šimek, K., Sime-Ngando, T.* (2002) Strong, weak, and missing links in microbial community of the N.W. Mediterranean Sea. FEMS Microbiology Ecology, 42: 451–462. Research impacted |
| Gasol, J.M.*, Comerma, M.*, García, J.C.*, Armengol, J.*, Casamayor, E.O.*, Kojecká, P., Šimek, K. (2002) A transplant experiment to identify the factors controlling bacterial abundance, activity, production and community composition in a eutrophic canyon-shaped reservoir. Limnology and Oceanography, 47 (1): 62–77. Research impacted |
| Kopáček, J.*, Kaňa, J.*, Šantrůčková, H.*, Porcal, P., Hejzlar, J., Picek, T.*, Šimek, M.*, Veselý, J.* (2002) Physical, chemical, and biochemical characteristics of soils in watersheds of the Bohemian Forest lakes: II. Čertovo and Černé Lakes. Silva Gabreta, 8: 67–93. Research non impacted |
| Šimek, K., Nedoma, J., Pernthaler, J.*, Posch, T.*, Dolan, J. R.* (2002) Altering the balance between bacterial production and protistan bacterivory triggers shifts in freshwater bacterial community composition. Antonie van Leeuwenhoek, 81: 453-463. Research impacted |
| Horňák, K.*, Mašín, M.*, Nedoma, J., Šimek, K. (2002) Využití genetických sond při studiu bakterioplanktonu vodárenské nádrže Římov (Use of genetic probes to study bacterioplankton of Římov reservoir). In: Ambrožová, J. (ed.): 18. seminář Aktuální otázky vodárenské biologie, Praha, February 6–7, 2002, VŠCHT, Praha, pp. 125–1290. ISBN 80–7080–467–X. Others |
| Comerma, M.*, García, J.C.*, Romero, M.*, Armengol, J.*, Šimek K. (2002) Carbon flow dynamics in the pelagic community along an eutrophic reservoir In: Hydrobiological Institute AS CR (eds.): ResLim 2002, Extended Abstracts, 4th International Conference on Reservoir Limnology and Water Quality, České Budějovice, August 12–16, 2002, Institute of Hydrobiology Academy of Sciences of the Czech Republic, Faculty of Biological Sciences University of South Bohemia, pp. 75. Others |
| Jezbera, J., Nedoma, J., Šimek, K. (2002) The role of protisan bacterivory along longitudinal transects of two canyon-shaped reservoirs In: Hydrobiological Institute AS CR (eds.): ResLim 2002, Extended Abstracts, 4th International Conference on Reservoir Limnology and Water Quality, České Budějovice, August 12–16, 2002, Institute of Hydrobiology Academy of Sciences of the Czech Republic, Faculty of Biological Sciences University of South Bohemia, pp. 157-160. Others |
| Macek, M., Jezbera, J., Seďa, J., Straškrabová, V., Šimek, K., Han, D.* (2002) Distribution and growth rates of ciliates along a longitudinal profile of the Římov reservoir In: Hydrobiological Institute AS CR (eds.): ResLim 2002, Extended Abstracts, 4th International Conference on Reservoir Limnology and Water Quality, České Budějovice, August 12–16, 2002, Institute of Hydrobiology Academy of Sciences of the Czech Republic, Faculty of Biological Sciences University of South Bohemia, pp. 196-199. Others |
| Mašín, M., Šimek, K., Nedoma, J., Straškrábová, V. (2002) Dynamics of bacterial communities composition along longitudinal axes of two canyon-shaped reservoirs In: Hydrobiological Institute AS CR (eds.): ResLim 2002, Extended Abstracts, 4th International Conference on Reservoir Limnology and Water Quality, České Budějovice, August 12–16, 2002, Institute of Hydrobiology Academy of Sciences of the Czech Republic, Faculty of Biological Sciences University of South Bohemia, pp. 208-211. Others |
| Nedoma, J., Vrba, J., Hejzlar, J., Šimek, K., García, J.C.*, Armengol, J.* (2002) Spatial patterns of phosphorus dynamics along to canyon-shaped reservoirs of different trophy In: Hydrobiological Institute AS CR (eds.): ResLim 2002, Extended Abstracts, 4th International Conference on Reservoir Limnology and Water Quality, České Budějovice, August 12–16, 2002, Institute of Hydrobiology Academy of Sciences of the Czech Republic, Faculty of Biological Sciences University of South Bohemia, pp. 250-253. Others |
| Šimek, K., Mašín, M., Horňák, K., Nedoma, J., Hejzlar, J. (2002) Factors controlling dynamics and community composition of microbial assemblages in a canyon-shaped reservoir In: Hydrobiological Institute AS CR (eds.): ResLim 2002, Extended Abstracts, 4th International Conference on Reservoir Limnology and Water Quality, České Budějovice, August 12–16, 2002, Institute of Hydrobiology Academy of Sciences of the Czech Republic, Faculty of Biological Sciences University of South Bohemia, pp. 314-317. Others |
| Straškrabová, V., Šimek, K., Vrba, J., Nedoma, J., Macek, M., Hartman, P. (2002) Seasonal and interannual changes of microbial loop in pelagic food webs of reservoirs In: Hydrobiological Institute AS CR (eds.): ResLim 2002, Extended Abstracts, 4th International Conference on Reservoir Limnology and Water Quality, České Budějovice, August 12–16, 2002, Institute of Hydrobiology Academy of Sciences of the Czech Republic, Faculty of Biological Sciences University of South Bohemia, pp. 322-325. Others |
| Vrba, J., Nedoma, J., Šimek, K., Straškrabová, V., Štrojsová, A., Fuksa, J.K.*, Svoboda, J.* (2002) Extracellular enzymes and production parameters in two canyon reservoirs of different trophy: spatial patterns In: Hydrobiological Institute AS CR (eds.): ResLim 2002, Extended Abstracts, 4th International Conference on Reservoir Limnology and Water Quality, České Budějovice, August 12–16, 2002, Institute of Hydrobiology Academy of Sciences of the Czech Republic, Faculty of Biological Sciences University of South Bohemia, pp. 362-365. Others |
| Comerma, M.*, García, J.C.*, Armengol, J.*, Romero, M.*, Šimek, K. (2001) Planktonic food web structure along the Sau Reservoir (Spain) in summer 1997. Internat. Rev. Hydrobiol., 86 (2): 195-209. Research impacted |
| Macek, M., Šimek, K., Bittl, T.* (2001) Conspicuous peak of oligotrichous ciliates following winter stratification in a bog lake. Journal of Plankton Research, 23 (4): 353-363. Research impacted |
| Pernthaler, J.*, Posch, T.*, Šimek, K., Vrba, J., Pernthaler, A.*, Glöckner, F.O.*, Nübel, U.*, Psenner, R.*, Amann, R.* (2001) Predator-specific enrichment of actinobacteria from a cosmopolitan freshwater clade in mixed continuous culture. Applied and Environmental Microbiology, 5: 2145-2155. Research impacted |
| Posch, T.*, Jezbera, J., Vrba, J., Šimek, K., Pernthaler, J.*, Andreatta, S.*, Sonntag B.* (2001) Size selective feeding in Cyclidium glaucoma (Ciliophora, Scuticociliatida) and its effects on bacterial community structure: a study from a continuous cultivation system. Microbial Ecology, 42: 217-227. Research impacted |
| Šimek, K., Armengol, J.*, Comerma, M.*, Garcia, J.C.*, Kojecká, P.*, Nedoma, J., Hejzlar, J. (2001) Changes in the epilimnetic bacterial community composition, production, and protist-induced mortality along the longitudinal axis of a highly eutrophic reservoir. Microbial Ecology, 42: 359-371. Research impacted |
| Šimek, K., Pernthaler, J.*, Weinbauer, M.G.*, Horňák, K.*, Dolan, J.R.*, Nedoma, J., Mašín, M.*, Amann, R.* (2001) Changes in bacterial community composition and dynamics and viral mortality rates associated with enhanced flagellate grazing in a mesoeutrophic reservoir. Applied and Environmental Microbiology, 6: 2723-2733. Research impacted |
| Brzáková, M., Hejzlar, J., Borovec, J., Nedoma, J., Seďa, J., Šimek, K., Vrba, J. (2001) Retence fosforu ve vodárenské nádrži Římov (Phosphorus retention in drinking water reservoir Římov). In: Kalousková, N., Dolejš, P. (eds.) Sborník z konference Pitná voda 2001, 6. pokračování konferencí Pitná voda z údolních nádrží, Tábor, May 21-24, 2001, W&ET Team, Č. Budějovice, pp. 295-300. Others |
| Jürgens, K.*, Šimek, K. (2000) Functional response and particle size selection of Halteria cf. grandinella, a common freshwater oligotrichous ciliate. Aquatic Microbial Ecology, 22: 57-68. Research impacted |
| 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. Aquatic Microbial Ecology, 22: 43-56. Research impacted |
| Straškrabová, V., Fott, J.*, Hartman, P., Macek, M., Nedoma, J., Šimek, K., Vrba, J. (2000) Structure of pelagic food webs in low-alkalinity lakes – forested and alpine catchments. Silva Gabreta, 4:199-212. Research non impacted |
| Straškrabová, V., Šimek, K., Macek, M., Hartman, P., Fott, J.*, Blažo, M.* (2000) Pelagic food webs and microbial loop in low-alkalinity mountain lakes. Verh. Internat. Verein. Limnol., 27: 513-516. Research impacted |
| Jezbera, J., Nedoma, J., Šimek, K. (2000) Role prvoků jako konzumentů bakteriální produkce na podélných profilech kaňonovitých údolních nádrží (The role of protists as consumers of bacterial production on longitudinal transects of canyon shaped reservoirs). In: Rulík, M. (ed.), XII. Limnologická konference Limnologie na přelomu tisíciletí, Kouty nad Desnou, September 18-22, 2000, Univerzita Palackého Olomouc, pp. 13-17. Others |
| Mašín, M., Šimek, K. (2000) Změna genetického složení bakterioplanktonu v podélném profilu nádrže Římov (Changes in bacterioplankton community composition along the longitudinal axes of the Římov Reservoir). In: Rulík, M. (ed.), XII. Limnologická konference Limnologie na přelomu tisíciletí, Kouty nad Desnou, September 18-22, 2000, Univerzita Palackého Olomouc, pp. 26-29. Others |
| Šimek, K., Horňák, K., Mašín, M., Nedoma, J. (2000) Vliv protozoální predace na dynamiku a složení bakteriálních společenstev v nádrži Římov (Impacts of protistan bacterivory on the dynamics and community composition of bacterioplankton in the Římov reservoir). In: Rulík, M. (ed.), XII. Limnologická konference Limnologie na přelomu tisíciletí, Kouty nad Desnou, September 18-22, 2000, Univerzita Palackého Olomouc, pp. 43-46. Others |
| Dolan, J. R.*, Šimek, K. (1999) Diel periodicity in Synechococcus populations and grazing by heterotrophic nanoflagellates: Analysis of food vacuole contents. Limnology and Oceanography, 44 (6): 1565-1570. Research impacted |
| Posch, T.*, Šimek, K., Vrba, J., Pernthaler, J.*, Nedoma, J., Sattler, B.*, Sonntag, B.*, Psenner, R.* (1999) Predator-induced changes of bacterial size-structure and productivity studied on an experimental microbial community. Aquatic Microbial Ecology, 18: 235-246. Research impacted |
| Šimek, K., Kojecká, P., Nedoma, J., Hartman, P., Vrba, J., Dolan, J. R.* (1999) Shifts in bacterial community composition associated with different microzooplankton size fractions in a eutrophic reservoir. Limnology and Oceanography, 44 (7): 1634-1644. Research impacted |
| Straškrabová, V., Callieri, C.*, Carrillo, P.*, Cruz-Pizarro, L.*, Fott, J.*, Hartman, P., Macek, M., Medina-Sánchez, J. M.*, Nedoma, J., Šimek, K. (1999) Investigations on pelagic food webs in mountain lakes – aims and methods. Journal of Limnology, 58 (2): 77-87. Research impacted |
| Armengol, J.*, Garcia, J. C.*, Comerma, M.*, Romero, M.*, Dolz, J.*, Roura, M.*, Han, B.-H.*, Vidal, A.*, Šimek, K. (1999) Longitudinal processes in canyon type reservoirs: the case of Sau (N. E. Spain). In: Tundisi, J. G., Straškraba, M. (eds.), Theoretical Reservoir Ecology and its Applications, pp. 313-345, International Institute of Ecology Brazilian Academy of Sciences and Backhuys Publishers. Research non impacted |
| Straškrabová, V., Šimek, K., Nedoma, J. (1999) Importance of pelagic bacteria in lakes and reservoirs of different trophy- implications for long-term monitoring. In: Lake 99, Sustainable Lake Management, 8th International Conference on the Conservation and Management of Lakes, Vol. II, S7C-5, 4 pp. Copenhagen, May 17-21, 1999. /Extended abstract/ Others |
| Šimek, K., Armengol, J.*, Comerma, M.*, Garcia, J. C.*, Chrzanowski, T.H.*, Kojecká, P., Macek, M., Nedoma, J., Straškrabová, V. (1999) Impacts of protistan grazing on bacterial dynamics and composition in reservoirs of different trophy: In: Tundisi, J. G., Straškraba, M. (eds.), Theoretical Reservoir Ecology and its Applications, pp. 267-282, International Institute of Ecology Brazilian Academy of Sciences and Backhuys Publishers. Research non impacted |
| Šimek, K., Comerma, M.*, Garcia, J.-C.*, Hejzlar, J., Kojecká, P., Nedoma, J. (1999) Eliminace bakteriálního znečištění na podélném profilu vodárenské nádrže (An elimination of bacterial pollution along a longitudinal transect of a drinking water reservoir). In: Sládeček, V. (ed.) Sborník ze 14. semináře Aktuální otázky vodárenské biologie, pp. 96-100. Praha, February 4-5, 1998, Pobočka, ČVVS. Others |
| Dolan, R. J. - Šimek, K. (1998) Ingestion and digestion of an autotrophic picoplankter, Synechococcus, by a heterotrophic nanoflagellate, Bodo saltans. 7 s. Limnology and Oceanography, 43 [7] 1740-1746 (1998). Research impacted |
| Hejzlar, J. - Dolejš, P. - Komárková, J. - Seďa, J. - Šimek, K. - Vyhnálek, V. (1998) Effect of biomanipulation on the structuring of the planktonic food web and water treatability by coagulation. 8 s. Water Science and Technology, 37 [2] 105-112 (1998). Research impacted |
| Hejzlar, J. - Kopáček, J. - Vrba, J. - Čížková, R. - Komárková, J. - Šimek, K. (1998) Limnological study of Plešné Lake in 1994-1995. 20 s. Silva Gabreta, 2, 155-174 (1998). Research non impacted |
| Pernthaler, J. - Posch, T. - Šimek, K. - Vrba, J. - Psenner, R. - Amann, R. (1998) Protisten-induzierte Populationsverschiebungen in einer experimentellen mikrobiellen Gemeinschaft. In: Neueste Entwicklungen in der in situ-Charakterisierung mikrobieller Biozönosen in Abwasser, Oberflächengewässern, Grund- und Trinkwasser. - München, Oldenbourg 1998. - 10 s.S. 117-126. Research non impacted |
| Straškrabová, V. - Brandl, Z. - Hrbáček, J. - Komárková, J. - Seďa, J. - Straškraba, M. - Šimek, K. (1998) Long-term changes of bacteria, phytoplankton and zooplankton: temporal coherence between deep stratified reservoirs. 10 s. International Review of Hydrobiology, 83 [Special Issue] 21-30 (1998). Research impacted |
| Šimek, K. - Armengol, J. - Comerma, M. - Garcia, J. C. - Chrzanowski, T. H. - Macek, M. - Nedoma, J. - Straškrabová, V. (1998) Characteristics of protistan control of bacterial production in three reservoirs of different trophy. 10 s. International Review of Hydrobiology, 83 [Special Issue] 485-494 (1998). Research impacted |
| Šimek, K. - Babenzien, D. - Bittl, T. - Koschel, R. - Macek, M. - Nedoma, J. - Vrba, J. (1998) Microbial Food Webs in an Artificially Divided Acidic Bog Lake. 16 s. International Revue der gesamten Hydrobiologie, 83 [1] 3-18 (1998). Research impacted |
| Hejzlar, J. - Dolejš, P. - Komárková, J. - Porcalová, P. - Seďa, J. - Šimek, K. - Vyhnálek, V. (1997) Vliv biomanipulace na upravitelnost vody na příkladu nádrže Římov. In: Aktuální otázky vodárenské biologie. - (Ed. Sládeček, V.). - Praha, Pobočka ČVVS 1997. - S. 31-35. Others |
| Hejzlar, J. - Dolejš, P. - Komárková, J. - Seďa, J. - Šimek, K. - Vyhnálek, V. (1997) Effect of biomanipulation on the structuring of the planktonic food web and water treatability by coagulation. In: Reservoir Management and Water Supply - an Integrated System. - (Ed. Dolejš, P.; Kalousková, N.). - Prague, IAWQ-IWSA Joint Specialist Conference 1997. - S. 107-114. Others |
| Hejzlar, J. - Komárková, J. - Porcalová, P. - Seďa, J. - Šimek, K. - Vyhnálek, V. - Dolejš, P. (1997) Vliv biomanipulace na strukturu planktonního společenstva a na úpravu vody koagulací. Vodní hospodářství, 47 [7-8] 240-242 (1997). Others |
| Straškrabová, V. - Hartman, P. - Macek, M. - Nedoma, J. - Šimek, K. - Vrba, J. (1997) S helikoptérou za mikroby horských jezer. In: Limnologický výzkum pro rozumné hospodaření s vodou. - (Ed. Lukavský, J.; Švehlová, D.). - Třeboň, ČLS, SLS 1997. - S. 188. Others |
| Straškrabová, V. - Hartman, P. - Macek, M. - Šimek, K. - Vrba, J. (1997) Podíl baktérií v biomase planktonu údolních nádrží. In: Limnologický výzkum pro rozumné hospodaření s vodou. - (Ed. Lukavský, J.; Švehlová, D.). - Třeboň, ČLS, SLS 1997. - S. 189-192. Others |
| Dolan, J.R., Šimek, K. (1997) Processing of ingested matter in Strombidium sulcatum, a marine ciliate (Oligotrichida). Limnology and Oceanography, 42 [2] 393-397 (1997). Research impacted |
| Šimek, K. - Hartman, P. - Kojecká, P. - Nedoma, J. - Pernthaler, J. - Posch, T. - Vrba, J. (1997) Faktory ovlivňující diverzitu společenstev vodních bakterií: využití fluorescenčně značených RNA-sond. In: Limnologický výzkum pro rozumné hospodaření s vodou. - (Ed. Lukavský, J.; Švehlová, D.). - Třeboň, ČLS, SLS 1997. - S. 196-199. Others |
| Šimek, K. - Hartman, P. - Nedoma, J. - Pernthaler, J. - Springmann, D. - Vrba, J. - Psenner, R. (1997) Community structure, picoplankton grazing and zooplankton control of heterotrophic nanoflagellates in a eutrophic reservoir during the summer phytoplankton maximum. Aquatic Microbial Ecology, 12, 49-63 (1997). Research impacted |
| Pernthaler, J., Šimek, K., Posch, T. - Vrba, J. - Amann, R. - Psenner, R. (1997) Contrasting bacterial strategies to coexist with a flagellate predator in an experimental microbial assemblage. Applied and Environmental Microbiology, 63 [2] 596-601 (1997). Research impacted |
| Šimek, K. - Vrba, J. - Pernthaler, J. - Posch, T. - Hartman, P. - Nedoma, J. - Psenner, R. (1997) Morphological and compositional shifts in an experimental bacterial community influenced by protists with contrasting feeding modes. Applied and Environmental Microbiology, 63 [2] 587-595 (1997). Research impacted |
| Vrba, J. - Kofroňová-Bobková, J. - Pernthaler, J. - Šimek, K. - Macek, M. - Psenner, R. (1997) Extracellular, low-affinity β-N-acetylglucosaminidases linked to the dynamics of diatoms and crustaceans in freshwater systems of different trophic degree. Internationale Revue der gesamten Hydrobiologie, 82 [2] 277-286 (1997). Research impacted |
| Vrba, J. - Kopáček, J. - Fott, J. - Hartman, P. - Hejzlar, J. - Komárková, J. - Macek, M. - Nedoma, J. - Straškrabová, V. - Šimek, K. (1997) Limnologický výzkum šumavských jezer na sklonku 20. století. In: Limnologický výzkum pro rozumné hospodaření s vodou. - (Ed. Lukavský, J.; Švehlová, D.). - Třeboň, ČLS, SLS 1997. - S. 222-225. Others |
| Macek, M. - Šimek, K. - Pernthaler, J. - Vyhnálek, V. - Psenner, R. (1996) Growth rates of dominant planktonic ciliates in two freshwater bodies of different trophic degree. Journal of Plankton Research, 18 [4] 463-481 (1996). Research impacted |
| Šimek, K. - Macek, M. - Pernthaler, J. - Straškrabová, V. - Psenner, R. (1996) Can freshwater planktonic ciliates survive on a diet of picoplankton? Journal of Plankton Research, 18 [4] 597-613 (1996). Research impacted |
| Pernthaler, J., Šimek, K., Sattler, B. - Schwarzenbacher, A. - Bobková, J. - Psenner, R. (1996) Short-term changes of protozoan control on autotrophic picoplankton in an oligo-mesotrophic lake. Journal of Plankton Research, 18 [3] 443-462 (1996). Research impacted |
| Pernthaler, J., Šimek, K. Sattler, B., Schwarzenbacher, A., Psenner, R. (1996) Top-down effects on the size biomass distribution of a freshwater bacterioplankton community. Aquatic Microbial Ecology, 10, 255-263 (1996). Research impacted |
| Vrba, J. - Kopáček, J. - Straškrabová, V. - Hejzlar, J. - Šimek, K. (1996) Limnological research of acidified lakes in Czech part of the Šumava Mountains: trophic status and dominance of microbial food webs. Silva Gabreta, 1: 151-164. Research non impacted |
| Vrba, J. - Nedoma, J. - Šimek, K. - Filandr, P. (1996) Different sources of extracellular β-N-acetylhexosaminidase-like activities in freshwaters. In: Chitin Enzymology. - (Ed. Muzzareli, R. A. A.). - -, Atec Edizioni 1996. - S. 293-301. Research non impacted |
| Vrba, J. - Šimek, K. - Pernthaler, J. - Psenner, R. (1996) Evaluation of Extracellular, High-affinity β-N-acetylglucosaminidase Measurements from Freshwater Lakes: An Enzyme Assay to Estimate Protistan Grazing on Bacteria and Picocyanobaceria. Microbial Ecology, 32, 81-99 (1996). Research impacted |
| Matěna, J. - Šimek, K. - Fernando, C. H. (1995) Ingestion of suspended bacteria by fish: a modified approach. Journal of Fish Biology, 47, 334-336 (1995). Research impacted |
| Šimek, K. - Bobková, J. - Macek, M. - Nedoma, J. (1995) Ciliate grazing on picoplankton in a eutrophic reservoir during the summer phytoplankton maximum: A study at the species and community level. Limnology and Oceanography, 40 [6] 1077-1090 (1995). Research impacted |
| Vrba, J. - Hartman, P. - Šimek, K. (1995) Rychlé testy pro zjištění vlastností a identifikaci bakterií: využití komerčních fluorogenních substrátů. In: Nové ČSN ISO a STN ISO normy mikrobiologického rozboru vod. - (Ed. Tržilová, B.). - Brno, Československá spoločnosť mikrobiologická - Komisia mikrobiológie vody 1995. - S. 100-105. Others |
| Matěna, J. - Vyhnálek, V. - Šimek, K. (1994) Food web management. In: Restoration of Lake Ecosystems. - (Ed. Eiseltová, M.). - Slimbridge - Gloucester, International Waterfowl and Wetlands Research 1994. - S. 97-102. Research non impacted |
| Nedoma, J. - Vrba, J. - Hejzlar, J. - Šimek, K. - Straškrabová, V. (1994) N-acetylglucosamine dynamics in freshwater environments: Concentration of amino sugars, extracellular enzyme activities, and microbial uptake. Limnology and Oceanography, 39 [5] 1088-1100 (1994). Research impacted |
| Straškrabová, V. - Komárková, J. - Macek, M. - Seďa, J. - Šimek, K. - Vrba, J. - Vyhnálek, V. (1994) Microbial-algal-crustacean interactions in a reservoir under different fishstock. Ergebnisse der Limnologie. Archiv für Hydrobiologie Beiheft, 40, [-] 209-221 (1994.02.00). Research non impacted |
| Straškrabová, V. - Vrba, J. - Šimek, K. - Nedoma, J. (1994) Mikrobiologie kyselých horských jezer (Šumava). In: Nové metódy v mikrobiológii vody. - 6. - (Ed. Tržilová, B.). - Bratislava, Československá spoločnosť mikrobiologická, Komisia mikrobiológie vody 1994. - S. 97-104. Others |
| Šimek, K. - Krištůfek, V. (1994) Celkové počty bakterií - Epifluorescentní metody. In: Kultivační a mikroskopické metody studia počtu mikroorganismů v půdě. - (Ed. Krištůfek, V.; Lukešová, E.). - České Budějovice, Ústav půdní biologie AV ČR 1994. - S. 58-60. Others |
| Šimek, K. - Vrba, J. - Hartman, P. (1994) Size-selective feeding by Cyclidium sp. on bacterioplanktnon and various sizes of cultured bacteria. FEMS Microbiology Ecology, 14 [2] 157-168 (1994). Research impacted |
| Šimek, K. - Vrba, J. - Lavrentyev, P. (1994) Estimates of protozoan bacterivory: From microscopy to ectoenzyme assay? Marine Microbial Food Webs, 8 [1/2] 71-85 (1994). Research impacted |
| Vrba, J. - Nedoma, J. - Šimek, K. - Hartman, P. - Macháček, J. (1994) Aktivita extracelulárních hydroláz ve vodách: různá ekologická interpretace a význam. In: Zborník 10. Limnologickej konferencie. - Bratislava, Slovenská Limnologická spoločnosť 1994. - S. 240-244. Others |
| Chrzanowski, T.H. - Šimek, K. (1993) Bacterial growth and losses due to bacterivory in a mesotrophic lake. Journal of Plankton Research, 15 [7] 771-785 (1993). Research impacted |
| Chrzanowski, T.H. - Šimek, K. - Sada, R. H. - Williams, S. (1993) Estimates of Bacterial Growth Rate Constants from Thymidine Incorporation and Variable Conversion Factors. Microbial Ecology, 25 [2] 121-130 (1993). Research impacted |
| Straškrabová, V. - Šimek, K. (1993) Microbial loop in lakes and reservoirs related to trophy and mezazooplankton development. In: Proceedings of the International Association for Theoretical and Applied Limnology, Congres in Barcelona 1992. - Part 2. - (Ed. Sládečková, A.). - Stuttgart, E. Schweizerbart'sche Verlagsbuchhandlung 1993. - S. 1183-1186. Others |
| Vrba, J. - Šimek, K. - Nedoma, J. - Hartman, P. (1993) 4-Methylumbelliferyl-β-N-Acetylglucosaminide Hydrolysis by a High-Affnity Enzyme, a Putative Marker of Protozoan Bacterivory. Applied and Environmental Microbiology, 59 [9] 3091-3101 (1993). Research impacted |
