Biblio

Vrba, J. 2000. Comment to Sherr and Sherr (1999): "Is there any appropriate way to distinguish different beta-N-acetylhexosaminidase activities in aquatic environments?". FEMS Microbiology Ecology 33: 81–84.

Vrba, J. 1992. Seasonal extracellular enzyme activities in decomposition of polymeric organic matter in a reservoir. Archiv für Hydrobiologie Beihefte Ergebnisse der Limnologie 37: 33-42.

Vrba, J. 1990. Effect of periodic illumination on nitrification in the continuous cultivation. Archiv für Hydrobiologie Beihefte Ergebnisse der Limnologie 34: 145–450.

Vrba, J., C. Callieri, T. Bittl, K. Šimek, R. Bertoni, P. Filandr, P. Hartman, J. Hejzlar, M. Macek, and J. Nedoma. 2004. Are bacteria the major producers of extracellular glycolytic enzymes in aquatic environments?. International Review of Hydrobiology 89: 102–117.

Vrba, J., P. Filandr, J. Nedoma, and K. Šimek. 1996. Different sources of extracellular beta-N-acetylhexosaminidase-like activities in freshwaters R.A.A. Muzzarelli [ed.]. Chitin enzymology 2: 293 - 301.

Vrba, J., J. Fott, L. Kohout, J. Kopacek, M. Macek, and L. Nedbalova. 2008. Limnological survey of the lakes Wielki Staw and Maly Staw in the Giant Mts. (Karkonosze). Opera Concortica 45: 45 - 58.

Vrba, J., J. Kofronova-Bobkova, J. Pernthaler, K. Šimek, M. Macek, and R. Psenner. 1997. Extracellular, low-affinity beta-N-acetylglucosaminidases linked to the dynamics of diatoms and crustaceans in freshwater systems of different trophic degree. Internationale Revue Der Gesamten Hydrobiologie 82: 277–286.

Vrba, J., J. Komarkova, and V. Vyhnalek. 1993. Enhanced Activity of Alkaline-phosphatases - Phytoplankton Response To Epilimnetic Phosphorus Depletion. Water Science and Technology 28: 15–24.

Vrba, J., J. Kopacek, T. Bittl, J. Nedoma, A. Strojsova, L. Nedbalova, L. Kohout, and J. Fott. 2006. A key role of aluminium in phosphorus availability, food web structure, and plankton dynamics in strongly acidified lakes. Biologia 61: S441–S451.

Vrba, J., J. Kopacek, and J. Fott. 2000. Long-term limnological research of the Bohemian Forest lakes and their recent status. Silva Gabreta 4: 7 - 27.

Vrba, J., J. Kopacek, J. Fott, L. Kohout, L. Nedbalova, M. Prazakova, T. Soldan, and J. Schaumburg. 2003. Long-term studies (1871-2000) on acidification and recovery of lakes in the Bohemian Forest (central Europe). Science of the Total Environment 310: 73–85.

Vrba, J., J. Kopacek, V. Straskrabova, J. Hejzlar, and K. Šimek. 1996. Limnological research of acidified lakes in Czech part of the Sumava Mountains: trophic status and dominance of microbial food webs. Silva Gabreta 1: 151 - 164.

Vrba, J., and J. Machacek. 1994. Release of Dissolved Extracellular Beta-n-acetylglucosaminidase During Crustacean Molting. Limnology and Oceanography 39: 712–716.

Vrba, J., J. Nedoma, and P. Filandr. 1996. Resolving complex saturation kinetics: a potential tool in interpretation of extracellular beta-N-acetylhexosaminidase data from natural freshwaters R.A.A. Muzzarelli [ed.]. Chitin enzymology 2: 303-311.

Vrba, J., J. Nedoma, L. Kohout, J. Kopacek, L. Nedbalova, P. Rackova, and K. Šimek. 2003. Massive occurrence of heterotrophic filaments in acidified lakes: seasonal dynamics and composition. FEMS Microbiology Ecology 46: 281–294.

Vrba, J., J. Nedoma, K. Šimek, and J. Seda. 1992. Microbial decomposition of polymer organic matter related to plankton development in a reservoir - activity of alpha-glucosidase, beta-glucosidase, and beta-N-acetylglucosaminidase and uptake of N-acetylglucosamine. Archiv für Hydrobiologie 126: 193–211.

Vrba, J., K. Šimek, J. Nedoma, and P. Hartman. 1993. 4-methylumbelliferyl-beta-N-acetylglucosaminide hydrolysis by a high-affinity enzyme, a putative marker of protozoan bacterivory. Applied and Environmental Microbiology 59: 3091–3101.

Vrba, J., K. Šimek, J. Pernthaler, and R. Psenner. 1996. Evaluation of extracellular, high-affinity beta-N-acetylglucosaminidase measurements from freshwater lakes: An enzyme assay to estimate protistan grazing on bacteria and picocyanobacteria. Microbial Ecology 32: 81–99.

Vrba, J., V. Vyhnalek, J. Hejzlar, and J. Nedoma. 1995. Comparison of Phosphorus Deficiency-indexes During A Spring Phytoplankton Bloom In A Eutrophic Reservoir. Freshwater Biology 33: 73–81.

Vrba, J., J. Kopacek, J. Fott, and L. Nedbalova. 2014. Forest Die-Back Modified Plankton Recovery from Acidic Stress. AMBIO 43: 207-217.

Vrba, J., J. Kopacek, K. Tahovska, and H. Santruckova. 2015. Long-term ecological research of glacial lakes in the Bohemian Forest and their catchments. Silva Gabreta 21: 53-71.

Vrba, J., J. Bojková, P. Chvojka, J. Fott, J. Kopacek, M. Macek, L. Nedbalova, M. Papáček, V. Rádková, V. Sacherová, T. Soldan, and M. Sorf. 2016. Constraints on the biological recovery of the Bohemian Forest lakes from acid stress. Freshwater Biology 61: 376-395.

Vrba, J., M. Macholdová, L. Nedbalova, J. Nedoma, and M. Sorf. 2018. An experimental insight into extracellular phosphatases – differential induction of cell-specific activity in green algae cultured under various phosphorus conditions. Frontiers in Microbiology 9, doi:10.3389/fmicb.2018.00271