Protistan grazing and viral lysis losses of bacterial carbon production in a large mesotrophic lake (Lake Biwa)
نویسندگان
چکیده
منابع مشابه
Synergistic and antagonistic effects of viral lysis and protistan grazing on bacterial biomass, production and diversity.
In a mesotrophic reservoir, we examined the effects on the bacterioplankton of distinct consumers of bacteria, viruses and heterotrophic nanoflagellates, both alone and combined in an experiment using natural populations and in situ incubations in dialysis bags. Ribosomal RNA-targeted probes were employed as well as 16S RNA gene based PCR denaturing gradient gel electrophoresis (DGGE) to enumer...
متن کاملDistribution of putative denitrifying methane oxidizing bacteria in sediment of a freshwater lake, Lake Biwa.
Methane oxidation coupled to denitrification is mediated by 'Candidatus Methylomirabilis oxyfera', which belongs to the candidate phylum NC10. The distribution of putative denitrifying methane-oxidizing bacteria related to "M. oxyfera" was investigated in a freshwater lake, Lake Biwa, Japan. In the surface layer of the sediment from a profundal site, a phylotype closely related to "M. oxyfera" ...
متن کاملProtistan grazing in a meromictic freshwater lake with anoxic bottom water.
Phagotrophic protists are an important mortality factor of prokaryotes in most aquatic habitats. However, no study has assessed protistan grazing as loss factor of bacterial biomass across the stratification gradient of a temperate freshwater meromictic lake. Protistan grazing effect was quantified in the mixolimnion, the transition zone, and the sulfidic anoxic monimolimnion of Lake Alatsee (G...
متن کاملIsolated history of the coastal plant Lathyrus japonicus (Leguminosae) in Lake Biwa, an ancient freshwater lake
BACKGROUND AND AIMS Lake Biwa is one of the world's few ancient lakes. Formed ∼4 million years ago, the lake harbours many coastal species that commonly inhabit seashores. The beach pea Lathyrus japonicus is a typical coastal species of this freshwater lake, but its inland populations are faced with the threat of extinction. Here, we investigated the phylogeographical and population structures ...
متن کاملSeasonal distribution of cyprinid herpesvirus 3 in Lake Biwa, Japan.
The seasonal distribution of the cyprinid herpesvirus 3 (CyHV-3) in Lake Biwa, Japan, was investigated. CyHV-3 was distributed all over the lake 5 years after the first outbreak. The mean concentration of CyHV-3 in water showed annual oscillation, with a peak in the summer and a trough in winter. Our results suggested that CyHV-3 is present at high density in reductive environments, such as ree...
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ژورنال
عنوان ژورنال: Limnology
سال: 2014
ISSN: 1439-8621,1439-863X
DOI: 10.1007/s10201-014-0431-6