caa a22 4500 465790518 CHVBK 20180323112023.0 cr unu---uuuuu 170327e19901201xx s 000 0 eng 10.1007/BF02543879 doi (NATIONALLICENCE)springer-10.1007/BF02543879 Explanation for the decline of bacteria introduced into lake water [Elektronische Daten] [Koteswara Gurijala, Martin Alexander] The sizes of the populations of individual bacterial species diminished following their addition to water from lakes with different trophic levels at temperatures of 5, 10, 15, and 30°C. Some species persisted after their initial reduction in cell numbers, but others were undetectable after 3 to 15 days. The decline of these introduced bacteria was not a result of their inoculation at higher densities than are found in nature. The death of most of the test species was not the result of starvation, abiotic factors, bdellovibrios, or bacteriophages. Despite the presence of lytic bacteria, the lake water did not have lytic activity against the test species. Protozoan predation was a significant factor in the fall in bacterial population sizes because protozoa increased in numbers as the bacterial density fell, the suppression of protozoa led to the elimination or delay of the decline of the bacteria, and the addition of protozoa to lake water in which indigenous protozoa were suppressed produced the same pattern of bacterial elimination as in untreated lake water. Springer-Verlag New York Inc., 1990 Gurijala Koteswara Laboratory of Soil Microbiology, Department of Soil, Crop and Atmospheric Sciences, Cornell University, 14853, Ithaca, New York, USA aut Alexander Martin Laboratory of Soil Microbiology, Department of Soil, Crop and Atmospheric Sciences, Cornell University, 14853, Ithaca, New York, USA aut Microbial Ecology Springer-Verlag 20/1(1990-12-01), 231-244 0095-3628 20:1<231 1990 20 248 https://doi.org/10.1007/BF02543879 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02543879 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Gurijala Koteswara Laboratory of Soil Microbiology, Department of Soil, Crop and Atmospheric Sciences, Cornell University, 14853, Ithaca, New York, USA aut NATIONALLICENCE 700 1- Alexander Martin Laboratory of Soil Microbiology, Department of Soil, Crop and Atmospheric Sciences, Cornell University, 14853, Ithaca, New York, USA aut NATIONALLICENCE 773 0- Microbial Ecology Springer-Verlag 20/1(1990-12-01), 231-244 0095-3628 20:1<231 1990 20 248 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer