This study addresses the effect of specific monochloramine concentration on biofilm density and bacterial functional potential in nutrient-limited water. The efficacy of monochloramine residual maintenance on biofilm density was studied at a range of 0.5 to 2.0 mg/l, using a 3:1 (w/w) dosing ratio of chlorine to ammonia, with the provision of low-nutrient water (0.18 mg/l as total organic carbo...

M. J. Steinbauer ([email protected]) and C. Beierkuhnlein, Lehrstuhl Biogeografi e, Univ. Bayreuth, DE-95447 Bayreuth, Germany. – R. Otto and J.-M. Ferná ndez-Palacios, Depto de Ecolog í a, Facultad de Biolog í a, Univ. de La Laguna, ES-38206 La Laguna, Tenerife, Islas Canarias, Spain. – A. N. Cigala, Depto de Geograf í a, Univ. de Las Palmas de Gran Canaria, ES-35003 Las Palmas...

Effects of the antimicrobial agent triclosan to natural periphyton communities (biofilms, comprising primarily microalgae and bacteria) were assessed in two independent experiments during spring and summer. For that purpose a semi-static test system was used in which periphyton was exposed to a concentration range of 5-9054 nmol/L triclosan. Effects on algae were analyzed as content and composi...

Enterohemeorrhagic Escherichia coli is a leading cause of foodborne illness, with the majority of cases linked to foods of bovine origin. Currently, no completely effective method for controlling this pathogen during carcass processing exists. Understanding how this pathogen behaves under those stress conditions experienced on the carcass during chilling in cold air could offer opportunities fo...

The aim of the study was an analysis of the intraspecific genetic and functional diversity of the new isolated fungal strains of P. setifera. This is the first report concerning the genetic and metabolic diversity of Petriella setifera strains isolated from industrial compost and the first description of a protocol for AFLP fingerprinting analysis optimised for these fungal species. The results...

Data produced by Biolog Phenotype MicroArrays are longitudinal measurements of cells' respiration on distinct substrates. We introduce a three-step pipeline to analyze phenotypic microarray data with novel procedures for grouping, normalization and effect identification. Grouping and normalization are standard problems in the analysis of phenotype microarrays defined as categorizing bacterial r...

Depa~nnent of.4i~imaI Sciences, Universiry of Illinoi~ at Urhnna-Champaign, Urhana, Illinois 61801 I; Qrreenslnnd Beef Indzrstq Institute, Qzreensland Deparrmem qf Primary Industlz'rs, :Woorooka, Queensland 4105. ~us t ra l i a~ ; Deparrmenr of Arctic Biolog?, and Institute of Medical Biolo~);, Uni~recsity of Trom~g, N-9037 Tromsg, iVon4~a);'; and National Instihte of'Advanced Industrid Science...

S. Soliveres ([email protected]), P. Garc í a-Palacios, A. P. Castillo-Monroy, F. T. Maestre, A. Escudero and F. Valladares, Á rea de Biodiversidad y Conservaci ó n, Depto de Biolog í a y Geolog í a, Escuela Superior de Ciencias Experimentales y Tecnolog í a, Univ. Rey Juan Carlos, ES – 28933 M ó stoles, Spain. SS, PG-P and FV also at: Inst. de Recursos Naturales, Centro de Ciencias Me...