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Spring Water of an Alpine Karst Aquifer Is Dominated by a Taxonomically Stable but Discharge-Responsive Bacterial Community.

Savio D, Stadler P, Reischer GH, Demeter K, Linke RB, Blaschke AP, Mach RL, Kirschner AKT, Stadler H, Farnleitner AH.

Front Microbiol. 2019 Feb 15;10:28. doi: 10.3389/fmicb.2019.00028. eCollection 2019.


Spatiotemporal resolved sampling for the interpretation of micropollutant removal during riverbank filtration.

van Driezum IH, Derx J, Oudega TJ, Zessner M, Naus FL, Saracevic E, Kirschner AKT, Sommer R, Farnleitner AH, Blaschke AP.

Sci Total Environ. 2019 Feb 1;649:212-223. doi: 10.1016/j.scitotenv.2018.08.300. Epub 2018 Aug 24.


Hotspots and main drivers of fecal pollution in Neusiedler See, a large shallow lake in Central Europe.

Hatvani IG, Kirschner AKT, Farnleitner AH, Tanos P, Herzig A.

Environ Sci Pollut Res Int. 2018 Oct;25(29):28884-28898. doi: 10.1007/s11356-018-2783-7. Epub 2018 Aug 13.


Poikilothermic Animals as a Previously Unrecognized Source of Fecal Indicator Bacteria in a Backwater Ecosystem of a Large River.

Frick C, Vierheilig J, Linke R, Savio D, Zornig H, Antensteiner R, Baumgartner C, Bucher C, Blaschke AP, Derx J, Kirschner AKT, Ryzinska-Paier G, Mayer R, Seidl D, Nadiotis-Tsaka T, Sommer R, Farnleitner AH.

Appl Environ Microbiol. 2018 Aug 1;84(16). pii: e00715-18. doi: 10.1128/AEM.00715-18. Print 2018 Aug 15.


Application of three different methods to determine the prevalence, the abundance and the environmental drivers of culturable Vibrio cholerae in fresh and brackish bathing waters.

Kirschner AKT, Pleininger S, Jakwerth S, Rehak S, Farnleitner AH, Huhulescu S, Indra A.

J Appl Microbiol. 2018 Oct;125(4):1186-1198. doi: 10.1111/jam.13940. Epub 2018 Aug 13.


Opening the black box of spring water microbiology from alpine karst aquifers to support proactive drinking water resource management.

Savio D, Stadler P, Reischer GH, Kirschner AKT, Demeter K, Linke R, Blaschke AP, Sommer R, Szewzyk U, Wilhartitz IC, Mach RL, Stadler H, Farnleitner AH.

WIREs Water. 2018 May-Jun;5(3):e1282. doi: 10.1002/wat2.1282. Epub 2018 Mar 9. Review.


Spatiotemporal analysis of bacterial biomass and activity to understand surface and groundwater interactions in a highly dynamic riverbank filtration system.

van Driezum IH, Chik AHS, Jakwerth S, Lindner G, Farnleitner AH, Sommer R, Blaschke AP, Kirschner AKT.

Sci Total Environ. 2018 Jun 15;627:450-461. doi: 10.1016/j.scitotenv.2018.01.226. Epub 2018 Feb 3.


Multiparametric monitoring of microbial faecal pollution reveals the dominance of human contamination along the whole Danube River.

Kirschner AKT, Reischer GH, Jakwerth S, Savio D, Ixenmaier S, Toth E, Sommer R, Mach RL, Linke R, Eiler A, Kolarevic S, Farnleitner AH.

Water Res. 2017 Nov 1;124:543-555. doi: 10.1016/j.watres.2017.07.052. Epub 2017 Jul 22.


High genetic diversity of Vibrio cholerae in the European lake Neusiedler See is associated with intensive recombination in the reed habitat and the long-distance transfer of strains.

Pretzer C, Druzhinina IS, Amaro C, Benediktsdóttir E, Hedenström I, Hervio-Heath D, Huhulescu S, Schets FM, Farnleitner AH, Kirschner AK.

Environ Microbiol. 2017 Jan;19(1):328-344. doi: 10.1111/1462-2920.13612. Epub 2017 Jan 18.


Optimized methods for Legionella pneumophila release from its Acanthamoeba hosts.

Dietersdorfer E, Cervero-Aragó S, Sommer R, Kirschner AK, Walochnik J.

BMC Microbiol. 2016 Apr 26;16:74. doi: 10.1186/s12866-016-0691-x.


Determination of viable legionellae in engineered water systems: Do we find what we are looking for?

Kirschner AKT.

Water Res. 2016 Apr 15;93:276-288. doi: 10.1016/j.watres.2016.02.016. Epub 2016 Feb 12. Review.


Attachment and Detachment Behavior of Human Adenovirus and Surrogates in Fine Granular Limestone Aquifer Material.

Stevenson ME, Sommer R, Lindner G, Farnleitner AH, Toze S, Kirschner AK, Blaschke AP, Sidhu JP.

J Environ Qual. 2015 Sep;44(5):1392-401. doi: 10.2134/jeq2015.01.0052.


Automated Sampling Procedures Supported by High Persistence of Bacterial Fecal Indicators and Bacteroidetes Genetic Microbial Source Tracking Markers in Municipal Wastewater during Short-Term Storage at 5°C.

Mayer RE, Vierheilig J, Egle L, Reischer GH, Saracevic E, Mach RL, Kirschner AK, Zessner M, Sommer R, Farnleitner AH.

Appl Environ Microbiol. 2015 Aug;81(15):5134-43. doi: 10.1128/AEM.00998-15. Epub 2015 May 22.


Bacterial diversity along a 2600 km river continuum.

Savio D, Sinclair L, Ijaz UZ, Parajka J, Reischer GH, Stadler P, Blaschke AP, Blöschl G, Mach RL, Kirschner AK, Farnleitner AH, Eiler A.

Environ Microbiol. 2015 Dec;17(12):4994-5007. doi: 10.1111/1462-2920.12886. Epub 2015 Jun 11.


Biotin- and Glycoprotein-Coated Microspheres as Surrogates for Studying Filtration Removal of Cryptosporidium parvum in a Granular Limestone Aquifer Medium.

Stevenson ME, Blaschke AP, Toze S, Sidhu JP, Ahmed W, van Driezum IH, Sommer R, Kirschner AK, Cervero-Aragó S, Farnleitner AH, Pang L.

Appl Environ Microbiol. 2015 Jul;81(13):4277-83. doi: 10.1128/AEM.00885-15. Epub 2015 Apr 17.


A sensitive and robust method for automated on-line monitoring of enzymatic activities in water and water resources.

Ryzinska-Paier G, Lendenfeld T, Correa K, Stadler P, Blaschke AP, Mach RL, Stadler H, Kirschner AK, Farnleitner AH.

Water Sci Technol. 2014;69(6):1349-58. doi: 10.2166/wst.2014.032.


Enumerating Microorganism Surrogates for Groundwater Transport Studies Using Solid-Phase Cytometry.

Stevenson ME, Blaschke AP, Schauer S, Zessner M, Sommer R, Farnleitner AH, Kirschner AK.

Water Air Soil Pollut. 2014;225:1827. Epub 2014 Jan 3.


Dynamics of natural prokaryotes, viruses, and heterotrophic nanoflagellates in alpine karstic groundwater.

Wilhartitz IC, Kirschner AK, Brussaard CP, Fischer UR, Wieltschnig C, Stadler H, Farnleitner AH.

Microbiologyopen. 2013 Aug;2(4):633-43. doi: 10.1002/mbo3.98. Epub 2013 Jul 4.


Clostridium perfringens is not suitable for the indication of fecal pollution from ruminant wildlife but is associated with excreta from nonherbivorous animals and human sewage.

Vierheilig J, Frick C, Mayer RE, Kirschner AK, Reischer GH, Derx J, Mach RL, Sommer R, Farnleitner AH.

Appl Environ Microbiol. 2013 Aug;79(16):5089-92. doi: 10.1128/AEM.01396-13. Epub 2013 Jun 7.


Holy springs and holy water: underestimated sources of illness?

Kirschner AK, Atteneder M, Schmidhuber A, Knetsch S, Farnleitner AH, Sommer R.

J Water Health. 2012 Sep;10(3):349-57. doi: 10.2166/wh.2012.005.


Development of a new CARD-FISH protocol for quantification of Legionella pneumophila and its application in two hospital cooling towers.

Kirschner AK, Rameder A, Schrammel B, Indra A, Farnleitner AH, Sommer R.

J Appl Microbiol. 2012 Jun;112(6):1244-56. doi: 10.1111/j.1365-2672.2012.05289.x. Epub 2012 Apr 30.


Applicability of solid-phase cytometry and epifluorescence microscopy for rapid assessment of the microbiological quality of dialysis water.

Riepl M, Schauer S, Knetsch S, Holzhammer E, Farnleitner AH, Sommer R, Kirschner AK.

Nephrol Dial Transplant. 2011 Nov;26(11):3640-5. doi: 10.1093/ndt/gfr471. Epub 2011 Sep 23.


Inactivation of Pseudomonas aeruginosa in electrochemical advanced oxidation process with diamond electrodes.

Griessler M, Knetsch S, Schimpf E, Schmidhuber A, Schrammel B, Wesner W, Sommer R, Kirschner AK.

Water Sci Technol. 2011;63(9):2010-6.


Acid phosphatase test proves superior to standard phenotypic identification procedure for Clostridium perfringens strains isolated from water.

Ryzinska-Paier G, Sommer R, Haider JM, Knetsch S, Frick C, Kirschner AK, Farnleitner AH.

J Microbiol Methods. 2011 Nov;87(2):189-94. doi: 10.1016/j.mimet.2011.08.006. Epub 2011 Aug 18.


Development of the bacterial compartment along the Danube River: a continuum despite local influences.

Velimirov B, Milosevic N, Kavka GG, Farnleitner AH, Kirschner AK.

Microb Ecol. 2011 May;61(4):955-67. doi: 10.1007/s00248-010-9768-5. Epub 2010 Nov 16.


Interaction of Vibrio cholerae non-O1/non-O139 with copepods, cladocerans and competing bacteria in the large alkaline lake Neusiedler See, Austria.

Kirschner AK, Schauer S, Steinberger B, Wilhartitz I, Grim CJ, Huq A, Colwell RR, Herzig A, Sommer R.

Microb Ecol. 2011 Apr;61(3):496-506. doi: 10.1007/s00248-010-9764-9. Epub 2010 Nov 4.


Escherichia coli and enterococci are sensitive and reliable indicators for human, livestock and wildlife faecal pollution in alpine mountainous water resources.

Farnleitner AH, Ryzinska-Paier G, Reischer GH, Burtscher MM, Knetsch S, Kirschner AK, Dirnböck T, Kuschnig G, Mach RL, Sommer R.

J Appl Microbiol. 2010 Nov;109(5):1599-608. doi: 10.1111/j.1365-2672.2010.04788.x. Epub 2010 Jul 9.


Microbiological water quality along the Danube River: integrating data from two whole-river surveys and a transnational monitoring network.

Kirschner AK, Kavka GG, Velimirov B, Mach RL, Sommer R, Farnleitner AH.

Water Res. 2009 Aug;43(15):3673-84. doi: 10.1016/j.watres.2009.05.034. Epub 2009 May 29.


Heterotrophic prokaryotic production in ultraoligotrophic alpine karst aquifers and ecological implications.

Wilhartitz IC, Kirschner AK, Stadler H, Herndl GJ, Dietzel M, Latal C, Mach RL, Farnleitner AH.

FEMS Microbiol Ecol. 2009 Jun;68(3):287-99. doi: 10.1111/j.1574-6941.2009.00679.x.


Rapid growth of planktonic Vibrio cholerae non-O1/non-O139 strains in a large alkaline lake in Austria: dependence on temperature and dissolved organic carbon quality.

Kirschner AK, Schlesinger J, Farnleitner AH, Hornek R, Süss B, Golda B, Herzig A, Reitner B.

Appl Environ Microbiol. 2008 Apr;74(7):2004-15. doi: 10.1128/AEM.01739-07. Epub 2008 Feb 1.


Bacterial carbon utilization in vertical subsurface flow constructed wetlands.

Tietz A, Langergraber G, Watzinger A, Haberl R, Kirschner AK.

Water Res. 2008 Mar;42(6-7):1622-34. Epub 2007 Oct 15.


Effects of deposit-feeding macrofauna on benthic bacteria, viruses, and protozoa in a silty freshwater sediment.

Wieltschnig C, Fischer UR, Velimirov B, Kirschner AK.

Microb Ecol. 2008 Jul;56(1):1-12. Epub 2007 Sep 19.


Growth response of soda lake bacterial communities to simulated rainfall.

Krammer M, Velimirov B, Fischer U, Farnleitner AH, Herzig A, Kirschner AK.

Microb Ecol. 2008 Feb;55(2):194-211. Epub 2007 Jul 6.


Contribution of virus-induced lysis and protozoan grazing to benthic bacterial mortality estimated simultaneously in microcosms.

Fischer UR, Wieltschnig C, Kirschner AK, Velimirov B.

Environ Microbiol. 2006 Aug;8(8):1394-407.


Prevalence of botulinum neurotoxin C1 and its corresponding gene in environmental samples from low and high risk avian botulism areas.

Zechmeister TC, Kirschner AK, Fuchsberger M, Gruber SG, Suess B, Rosengarten R, Pittner F, Mach RL, Herzig A, Farnleitner AH.

ALTEX. 2005;22(3):185-95.


Bacterial dynamics in spring water of alpine karst aquifers indicates the presence of stable autochthonous microbial endokarst communities.

Farnleitner AH, Wilhartitz I, Ryzinska G, Kirschner AK, Stadler H, Burtscher MM, Hornek R, Szewzyk U, Herndl G, Mach RL.

Environ Microbiol. 2005 Aug;7(8):1248-59.


Integral strategy for evaluation of fecal indicator performance in bird-influenced saline inland waters.

Kirschner AK, Zechmeister TC, Kavka GG, Beiwl C, Herzig A, Mach RL, Farnleitner AH.

Appl Environ Microbiol. 2004 Dec;70(12):7396-403.


Benthic and pelagic viral decay experiments: a model-based analysis and its applicability.

Fischer UR, Weisz W, Wieltschnig C, Kirschner AK, Velimirov B.

Appl Environ Microbiol. 2004 Nov;70(11):6706-13.


Does virus-induced lysis contribute significantly to bacterial mortality in the oxygenated sediment layer of shallow oxbow lakes?

Fischer UR, Wieltschnig C, Kirschner AK, Velimirov B.

Appl Environ Microbiol. 2003 Sep;69(9):5281-9.


Factors controlling extremely productive heterotrophic bacterial communities in shallow soda pools.

Eiler A, Farnleitner AH, Zechmeister TC, Herzig A, Hurban C, Wesner W, Krachler R, Velimirov B, Kirschner AK.

Microb Ecol. 2003 Jul;46(1):43-54. Epub 2003 May 13.


Benthic bacterial production and protozoan predation in a silty freshwater environment.

Wieltschnig C, Fischer UR, Kirschner AK, Velimirov B.

Microb Ecol. 2003 Jul;46(1):62-72. Epub 2003 May 13.


Extremely productive microbial communities in shallow saline pools respond immediately to changing meteorological conditions.

Kirschner AK, Eiler A, Zechmeister TC, Velimirov B, Herzig A, Mach R, Farnleitner AH.

Environ Microbiol. 2002 Sep;4(9):546-55.


[PCR and ELISA--in vitro alternatives to the mouse-bioassay for assessing the botulinum-neurotoxin-C1 production potential in environmental samples?].

Zechmeister TC, Farnleitner AH, Rocke TE, Pittner F, Rosengarten R, Mach RL, Herzig A, Kirschner AK.

ALTEX. 2002;19 Suppl 1:49-54. German.


Weak Coupling between Heterotrophic Nanoflagellates and Bacteria in a Eutrophic Freshwater Environment.

Wieltschnig C, Kirschner AK, Steitz A, Velimirov B.

Microb Ecol. 2001 Aug;42(2):159-167.


Rapid enzymatic detection of Escherichia coli contamination in polluted river water.

Farnleitner AH, Hocke L, Beiwl C, Kavka GC, Zechmeister T, Kirschner AK, Mach RL.

Lett Appl Microbiol. 2001 Sep;33(3):246-50.


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