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Statements

Subject Item
n2:RIV%2F60077387%3A_____%2F02%3A62023100%21RIV%2F2003%2FGA0%2FA62003%2FN
rdf:type
skos:Concept n12:Vysledek
dcterms:description
Bacterivorous protists are known to induce changes in bacterial community composition (BCC). We hypothesized that changes in BCC could be related quantitatively to a measure of grazing: the ratio of bacterial mortality to growth rate. To test this hypothesis, we analyzed changes in BCC, protistan grazing rate, and bacterial production from 3 in situ studies and 3 laboratory studies. Change in BCC, using different rRNA-targeted oligonucleotide probes, was estimated as the sum of changes in the proportions of the different phylogenetic groups of bacteria. Analysis of a set of 22 estimates of shifts in the ratio of grazing to production rate over periods of 48 -72 h and the corresponding changes in BCC showed that they were positively and tightly correlated (R squared = 0.784). While the nature of a shift in BCC is unpredictable, the magnitude of the change can be related to changes in the balance between bacterial production and protistan grazing. Bacterivorous protists are known to induce changes in bacterial community composition (BCC). We hypothesized that changes in BCC could be related quantitatively to a measure of grazing: the ratio of bacterial mortality to growth rate. To test this hypothesis, we analyzed changes in BCC, protistan grazing rate, and bacterial production from 3 in situ studies and 3 laboratory studies. Change in BCC, using different rRNA-targeted oligonucleotide probes, was estimated as the sum of changes in the proportions of the different phylogenetic groups of bacteria. Analysis of a set of 22 estimates of shifts in the ratio of grazing to production rate over periods of 48 -72 h and the corresponding changes in BCC showed that they were positively and tightly correlated (R squared = 0.784). While the nature of a shift in BCC is unpredictable, the magnitude of the change can be related to changes in the balance between bacterial production and protistan grazing.
dcterms:title
Altering the balance between bacterial production and protistan bacterivory triggers shifts in freshwater bacterial community composition. Altering the balance between bacterial production and protistan bacterivory triggers shifts in freshwater bacterial community composition.
skos:prefLabel
Altering the balance between bacterial production and protistan bacterivory triggers shifts in freshwater bacterial community composition. Altering the balance between bacterial production and protistan bacterivory triggers shifts in freshwater bacterial community composition.
skos:notation
RIV/60077387:_____/02:62023100!RIV/2003/GA0/A62003/N
n3:strany
453;463
n3:aktivita
n8:P n8:Z
n3:aktivity
P(GA206/02/0003), Z(AV0Z6017912), Z(MSM 123100004)
n3:cisloPeriodika
1-4
n3:dodaniDat
n17:2003
n3:domaciTvurceVysledku
n15:6252591 n15:7264798
n3:druhVysledku
n7:J
n3:duvernostUdaju
n13:S
n3:entitaPredkladatele
n5:predkladatel
n3:idSjednocenehoVysledku
637835
n3:idVysledku
RIV/60077387:_____/02:62023100
n3:jazykVysledku
n4:eng
n3:klicovaSlova
bacterial community composition; bacterial production and mortality rates; protistan bacterivory
n3:klicoveSlovo
n9:bacterial%20production%20and%20mortality%20rates n9:protistan%20bacterivory n9:bacterial%20community%20composition
n3:kodStatuVydavatele
NL - Nizozemsko
n3:kontrolniKodProRIV
[22C2A5E52284]
n3:nazevZdroje
Antonie van Leeuwenhoek
n3:obor
n6:EE
n3:pocetDomacichTvurcuVysledku
2
n3:pocetTvurcuVysledku
5
n3:pocetUcastnikuAkce
0
n3:pocetZahranicnichUcastnikuAkce
0
n3:projekt
n18:GA206%2F02%2F0003
n3:rokUplatneniVysledku
n17:2002
n3:svazekPeriodika
81
n3:tvurceVysledku
Nedoma, Jiří Pernthaler, J. Dolan, J. R. Posch, T. Šimek, Karel
n3:zamer
n16:AV0Z6017912 n16:MSM%20123100004
s:issn
0003-6072
s:numberOfPages
11