Bacterivory by a chrysophyte in slow sand filters

Bacterivory previously was shown to be responsible for significant removal of bacteria in slow sand filters. This research was designed to identify the responsible bacterivores and to evaluate their ability to remove a significant fraction of bacteria. A small (3-μm diameter) chrysophyte was isolated from slow sand filter effluent. The ability of a pure culture of the chrysophyte to rapidly ripen a slow sand filter was demonstrated.

[1]  Barry J Lloyd,et al.  The construction of a sand profile sampler: Its use in the study of the Vorticella populations and the general interstitial microfauna of slow sand filters , 1973 .

[2]  K. Šimek,et al.  Direct and Indirect Evidence of Size-Selective Grazing on Pelagic Bacteria by Freshwater Nanoflagellates , 1992, Applied and environmental microbiology.

[3]  T. Fenchel.  Ecology of heterotrophic microflagellates. II Bioenergetics and growth , 1982 .

[4]  P. T. Fenchel.  Ecology of Protozoa , 1987, Brock/Springer Series in Contemporary Bioscience.

[5]  J. Goldman,et al.  Dynamics of prey selection by an omnivorous flagellate , 1990 .

[6]  E. Shotts,et al.  Survival of coliforms and bacterial pathogens within protozoa during chlorination , 1988, Applied and environmental microbiology.

[7]  D. Patterson.  Free-Living Freshwater Protozoa , 1991 .

[8]  T. Nielsen,et al.  Trophic interactions between heterotrophic nanoflagellates and bacterioplankton in manipulated seawater enclosures1 , 1988 .

[9]  D. Caron,et al.  Heterotrophic flagellates of planktonic communities, their characteristics and methods of study , 1991 .

[10]  A. E. Greenberg,et al.  Standard methods for the examination of water and wastewater : supplement to the sixteenth edition , 1988 .

[11]  K. Nygaard,et al.  Use of 14C-protein-labelled bacteria for primary production , 1990 .

[12]  J. Slade,et al.  THE REMOVAL OF VIRUSES BY SLOW SAND FILTRATION , 1978 .

[13]  E. Sherr,et al.  Proportional distribution of total numbers, biovolume, and bacterivory among size classes of 2-20 μm nonpigmented marine flagellates , 1991 .

[14]  J. M. González,et al.  Size-selective grazing on bacteria by natural assemblages of estuarine flagellates and ciliates , 1990, Applied and environmental microbiology.

[15]  T. Fenchel.  Ecology of heterotrophic microflagellates. I. Some important forms and their functional morphology , 1982 .

[16]  L. Huisman,et al.  Slow sand filtration , 1974 .

[17]  B. Monger,et al.  Prey-size dependency of grazing by free-living marine flagellates , 1991 .

[18]  K. Nealson,et al.  Use of biolumescent bacteria, Xenorhabdus luminescens, to measure predation on bacteria by freshwater microflagellates* , 1990 .

[19]  K. J. Clarke,et al.  On the abundance and distribution of protozoa and their food in a productive freshwater pond. , 1988, European journal of protistology.

[20]  A. Montiel,et al.  Removal of biodegradable dissolved organic carbon in a water treatment plant , 1992 .

[21]  T. Fenchel.  Ecology of Heterotrophic Microflagellates. IV Quantitative Occurrence and Importance as Bacterial Consumers , 1982 .

[22]  P. Kuuppo-Leinikki.  Protozoan grazing on planktonic bacteria and its impact on bacterial population , 1990 .

[23]  F. Elder.  The Quest for Pure Water , 1949 .

[24]  Richard I. Dick,et al.  Physical—chemical mechanisms in slow sand filters , 1997 .

[25]  Peter M. Huck,et al.  Biological treatment of public water supplies , 1989 .

[26]  J. Meyer,et al.  Bacterivory by sestonic protists in a southeastern blackwater river , 1991 .

[27]  B. Finlay,et al.  Protozoan control of bacterial abundances in freshwater. , 1991 .

[28]  Monroe L. Weber-Shirk,et al.  Biological mechanisms in slow sand filters , 1997 .

[29]  R. Bak,et al.  Benthic heterotrophic nanoflagellates in north sea field/mesocosm bottoms and their response to algal sedimentation , 1991 .